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Wurentuya, Han S, Mei S, Lai M, Sirigunqiqige, Luoricuo, Yang M, Feng Y, Zhong G, Zhu J, Li M. The effect of ethanol extracts of loulu flower on LPS-induced acute lung injury in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 334:118515. [PMID: 38972530 DOI: 10.1016/j.jep.2024.118515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/26/2024] [Accepted: 06/30/2024] [Indexed: 07/09/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Mongolian medicine, Loulu flower (LLF), the dried inflorescence of Rhaponticum uniflorum (L.) DC. from the Compositae family, has been used to clear heat and relieve toxicity for millennia, particularly in the treatment of pneumonia. AIM OF THIS STUDY To reveal the effects of LLF on mice with lipopolysaccharide (LPS)-stimulated acute lung injury (ALI) and elucidate the underlying mechanisms. MATERIALS AND METHODS ALI was established in BALB/c mice via nasal drops administration of LPS (5 mg/kg). The mice were then orally administrated with various doses of LLF extracts and the positive drug dexamethasone (DEX, 5 mg/kg), once daily for seven consecutive days. Last day, after being stimulated with LPS for 6h, the mice were closed dislocation of cervical vertebra, the serum, bronchus alveolar lavage fluid (BALF) and lung tissue were put into the EP tube and stored at -80 °C for further analysis. The changes of histopathology were tested by hematoxylin and eosin stain (H&E), the levels of, IL-1β, IL-18, TNF-α and IL-4 in BALF and serum were measured by ELISA. The pathways related to the treatment of ALI were predicted by network pharmacology. The expression levels of TLR4/NF-κB and NLRP3 signaling pathway-associated proteins, COX-2 and ERK were tested by western blotting. The levels of P65 and NLRP3 in lung tissues were determined by immunofluorescence analysis. RESULTS LLF total extract and the extract parts could alleviate the inflammatory cell infiltration, thicken the alveolar walls in lung tissues, reduce the levels of IL-18, IL-1β in BALF, the TNF-α in both BALF and serum, meantime enhance the level of IL-4 in BALF and serum in mice with LPS-induced ALI. Our network pharmacology and comprehensive gene ontology analyses revealed the active constituents of LLF and the pathways, including TLR4/NF-κB, NLRP3 and MAPK signaling pathways, which play significant roles in ALI. Furthermore, both the total extract and its extraction portions suppressed the expressions of proteins related with the COX-2, p-ERK and TLR4/NF-κB signaling pathway (TLR4, p-IκB, p-p65), as well as the NLRP3 signaling pathway (NLRP3, cleaved caspase-1, caspase-1, IL-1β). CONCLUSION LLF could improve the pathological changes and reducing inflammatory reactions in mice induced by LPS. The mechanism may be related to the modulation of the TLR4/NLRP3 signaling pathways.
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Affiliation(s)
- Wurentuya
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China.
| | - Shan Han
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Shengtao Mei
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Mulin Lai
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | | | - Luoricuo
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Miaohong Yang
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Yulin Feng
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Guoyue Zhong
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Jixiao Zhu
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China
| | - Min Li
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, China.
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2
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Liang P, Zhu M, Sun X, Wang L, Li B, Ming S, Younis M, Yang J, Wu Y, Huang X. LncRNA-mRNA co-expression analysis reveals aquaporin-9-promoted neutrophil extracellular trap formation and inflammatory activation in sepsis. Int Immunopharmacol 2024; 140:112916. [PMID: 39133961 DOI: 10.1016/j.intimp.2024.112916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/29/2024] [Accepted: 08/06/2024] [Indexed: 09/01/2024]
Abstract
Sepsis is a life-threatening condition caused by an excessive inflammatory response to an infection. However, the precise regulatory mechanism of sepsis remains unclear. Using a strand-specific RNA-sequencing, we identified 115 hub differentially expressed long noncoding RNAs (lncRNAs) and 443 mRNAs in septic patients, primarily participated in crucial pathways including neutrophil extracellular trap (NET) formation and toll-like receptor signaling. Notably, NETs related gene aquaporin-9 (AQP9) and its associated lncRNAs exhibited significant upregulation in septic neutrophils. Functional experiments revealed AQP9 interacts with its lncRNAs to augment the formation of neutrophil NETs. In murine sepsis models, AQP9 inhibition with phloretin reduced proinflammatory cytokine production and lung damage. These findings provide crucial insights into the regulatory role of AQP9 in sepsis, unraveling its interaction with associated lncRNAs in transmitting downstream signals, holding promise in informing the development of novel therapeutic strategies aimed at ameliorating the debilitating effects of sepsis.
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Affiliation(s)
- Pingping Liang
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Guangdong-Hong Kong-Macao University Joint Laboratory of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Key Laboratory of Traditional Chinese Medicine for the Prevention and Treatment of Infectious Diseases, Traditional Chinese Medicine Bureau of Guangdong Province, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Manman Zhu
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong 519000, China
| | - Xingzi Sun
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Li Wang
- Department of Obstetrics and Gynecology, Perinatal Medical Center, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Bin Li
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Siqi Ming
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Muhammad Younis
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Jianhua Yang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Yongjian Wu
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Guangdong-Hong Kong-Macao University Joint Laboratory of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Key Laboratory of Traditional Chinese Medicine for the Prevention and Treatment of Infectious Diseases, Traditional Chinese Medicine Bureau of Guangdong Province, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China.
| | - Xi Huang
- Center for Infection and Immunity and Guangdong Provincial Engineering Research Center of Molecular Imaging, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Guangdong-Hong Kong-Macao University Joint Laboratory of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China; Key Laboratory of Traditional Chinese Medicine for the Prevention and Treatment of Infectious Diseases, Traditional Chinese Medicine Bureau of Guangdong Province, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China.
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3
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Shaheen N, Miao J, Li D, Xia B, Baoyinna B, Zhao Y, Zhao J. Indole-3-Acetic Acid Protects Against Lipopolysaccharide-induced Endothelial Cell Dysfunction and Lung Injury through the Activation of USP40. Am J Respir Cell Mol Biol 2024; 71:307-317. [PMID: 38761166 DOI: 10.1165/rcmb.2024-0159oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/18/2024] [Indexed: 05/20/2024] Open
Abstract
Lung microvascular endothelial cell (EC) dysfunction is the pathological hallmark of acute respiratory distress syndrome. Heat shock protein 90 (HSP90) is a key regulator in control of endothelial barrier disruption and inflammation. Our recent study has demonstrated that ubiquitin-specific peptidase 40 (USP40) preserves endothelial integrity by targeting HSP90β for its deubiquitination and inactivation. Indole-3-acetic acid (IAA), a plant hormone of the auxin class, can also be catabolized from dietary tryptophan by the intestinal microbiota. Accumulating evidence suggests that IAA reduces oxidative stress and inflammation and promotes intestinal barrier function. However, little is known about the role of IAA in endothelial cells and acute lung injury. In this study, we investigated the role of IAA in lung endothelial cell function in the context of acute lung injury. IAA exhibited EC barrier protection against LPS-induced reduction in transendothelial electrical resistance and inflammatory responses. The underlying mechanism of IAA on EC protective effects was investigated by examining the influence of IAA on degrees of HSP90 ubiquitination and USP40 activity. We identified that IAA, acting as a potential activator of USP40, reduces HSP90 ubiquitination, thereby protecting against LPS-induced inflammation in human lung microvascular endothelial cells as well as alleviating experimental lung injury. Furthermore, the EC protective effects of IAA against LPS-induced EC dysfunction and lung injury were abolished in USP40-deficient human lung microvascular endothelial cell and lungs of USP40 EC-specific knockout (USP40cdh5-ECKO) mice. Taken together, this study reveals that IAA protects against LPS-induced EC dysfunction and lung injury through the activation of USP40.
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Affiliation(s)
- Nargis Shaheen
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
| | - Jiaxing Miao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
| | - Donna Li
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
| | - Boyu Xia
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
| | - Boina Baoyinna
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
| | - Yutong Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Jing Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, and
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
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Yu CY, Cong YJ, Wei JX, Guo BL, Liu CY, Liao YH. Pulmonary delivery of icariin-phospholipid complex prolongs lung retention and improves therapeutic efficacy in mice with acute lung injury/ARDS. Colloids Surf B Biointerfaces 2024; 241:113989. [PMID: 38838444 DOI: 10.1016/j.colsurfb.2024.113989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/18/2024] [Accepted: 05/24/2024] [Indexed: 06/07/2024]
Abstract
Icariin has been shown the promising therapeutic potential to treat inflammatory airway diseases, yet its poor lung distribution and retention restrict the clinical applications. To this end, this work aimed to prepare an icariin-phospholipid complex (IPC) formulation for sustained nebulization delivery that enabled excellent inhalability, improved lung exposure and prolonged duration of action. Icariin was found to react with soybean phospholipid to form supramolecular IPC, which was able to self-assemble into nanoparticle suspension. The suspension was stable during steam sterilization and nebulization processes, and its aerosols generated by a commercial nebulizer exhibited excellent aerodynamic properties and delivery efficiency. In vitro studies showed that the formation of complex sustained drug release, enhanced lung affinity and slowed lung clearance. The drug distribution in lung epithelial lining fluid (ELF) also demonstrated in vivo sustained release after intratracheal administration to mice. In addition, compared to free icariin, IPC improved the drug exposure to lung tissues and immune cells in the ELF by 4.61-fold and 39.5-fold, respectively. This resulted in improved and prolonged local anti-inflammatory effects up to 24 h in mice with lipopolysaccharide (LPS)-induced acute lung injury. Moreover, IPC improved survival rate of mice with acute respiratory distress syndrome (ARDS). Overall, the present phospholipid complex represented a promising formulation of icariin for the treatment of acute lung injury/ARDS by nebulization delivery.
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Affiliation(s)
- Chen-Yang Yu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China
| | - Yi-Jun Cong
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China
| | - Jia-Xing Wei
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China
| | - Bao-Lin Guo
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China
| | - Chun-Yu Liu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China
| | - Yong-Hong Liao
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151 Malianwa North Road, Haidian District, Beijing 100193, PR China.
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5
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Paik NY, Neethling J, Anwar M, Gupta P, Sanborn MA, Shen Z, Bandara T, Hyun J, Naiche LA, Kitajewski JK, Rehman J, Shin JW, Mehta D, Pajcini KV. Notch transcriptional target tmtc1 maintains vascular homeostasis. Cell Mol Life Sci 2024; 81:370. [PMID: 39190102 DOI: 10.1007/s00018-024-05407-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 07/31/2024] [Accepted: 08/11/2024] [Indexed: 08/28/2024]
Abstract
Proper lung function requires the maintenance of a tight endothelial barrier while simultaneously permitting the exchange of macromolecules and fluids to underlying tissue. Disruption of this barrier results in an increased vascular permeability in the lungs, leading to acute lung injury. In this study, we set out to determine whether transcriptional targets of Notch signaling function to preserve vascular integrity. We tested the in vivo requirement for Notch transcriptional signaling in maintaining the pulmonary endothelial barrier by using two complementary endothelial-specific Notch loss-of-function murine transgenic models. Notch signaling was blocked using endothelial-specific activation of an inhibitor of Notch transcriptional activation, Dominant Negative Mastermindlike (DNMAML; CDH5CreERT2), or endothelial-specific loss of Notch1 (Notch1f/f; CDH5CreERT2). Both Notch mutants increased vascular permeability with pan-Notch inhibition by DNMAML showing a more severe phenotype in the lungs and in purified endothelial cells. RNA sequencing of primary lung endothelial cells (ECs) identified novel Notch targets, one of which was transmembrane O-mannosyltransferase targeting cadherins 1 (tmtc1). We show that tmtc1 interacts with vascular endothelial cadherin (VE-cadherin) and regulates VE-cadherin egress from the endoplasmic reticulum through direct interaction. Our findings demonstrate that Notch signaling maintains endothelial adherens junctions and vascular homeostasis by a transcriptional mechanism that drives expression of critical factors important for processing and transport of VE-cadherin.
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Affiliation(s)
- Na Yoon Paik
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Jacob Neethling
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Mumtaz Anwar
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Prerak Gupta
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Mark A Sanborn
- Department of Biochemistry, University of Illinois at Chicago College of Medicine, Chicago, IL, USA
| | - Zekun Shen
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Thilinie Bandara
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - James Hyun
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - L A Naiche
- Department of Physiology and Biophysics, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Jan K Kitajewski
- Department of Physiology and Biophysics, University of Illinois College of Medicine, Chicago, IL, 60612, USA
| | - Jalees Rehman
- Department of Biochemistry, University of Illinois at Chicago College of Medicine, Chicago, IL, USA
| | - Jae-Won Shin
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Dolly Mehta
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA
| | - Kostandin V Pajcini
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, 60612, USA.
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6
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Zhang B, Luo L, Xiong S, Xiao Y, Zhang T, Xiang T. Anisodamine hydrobromide ameliorates acute lung injury via inhibiting pyroptosis in murine sepsis model. Immunopharmacol Immunotoxicol 2024:1-10. [PMID: 39074955 DOI: 10.1080/08923973.2024.2386331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 07/22/2024] [Indexed: 07/31/2024]
Abstract
OBJECTIVE Sepsis can have severe implications on lung function, leading to acute lung injury (ALI), a major contributor to sepsis-related mortality. Anisodamine hydrobromide (Ani HBr), a bioactive constituent derived from the root of Scopolia tangutica Maxim, a plant endemic to China, has demonstrated efficacy in treating septic shock. We aim to explore whether Ani HBr can alleviate sepsis-triggered ALI and elucidate the fundamental mechanisms involved. MATERIALS AND METHOD The protective effects of Ani HBr were assessed in two models: in vitro, lipopolysaccharide (LPS)-stimulated RAW264.7 cells, and in vivo, cecal ligation puncture (CLP)-induced sepsis. To measure the cell viability of RAW264.7 cells after Ani HBr treatment, we used the CCK-8 assay. We quantified the levels of pro-inflammatory cytokines expression using ELISA. We also measured the expression of pyrotosis indicators by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR), Western blotting, and immunofluorescence. RESULTS Our study demonstrates that Ani HBr can alleviate pulmonary edema, bleeding, and excessive inflammation induced by CLP. Additionally, it exhibits protective effects against cytotoxicity induced by LPS in RAW264.7 macrophage cells. Furthermore, Ani HBr downregulates the mRNA and protein levels of NLRP3, Caspase-1, GSDMD, IL-18, and IL-1β in both animal models and cell cultures, thereby inhibiting pyroptosis in a similar mechanism to AC-YVAD-CMK (AYC)'s blockade of Caspase-1. Moreover, Ani HBr suppresses the production and release of proinflammatory cytokines. CONCLUSION These findings suggest that Ani HBr could serve as a protective agent against sepsis-induced ALI by suppressing pyroptosis.
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Affiliation(s)
- Bihua Zhang
- College of Medicine, Southwest Jiaotong University, Chengdu, China
- Department of Emergency, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, China
| | - Li Luo
- Department of Emergency, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, China
| | - Shiqiang Xiong
- Department of Cardiology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, China
| | - Yuanyuan Xiao
- Department of Emergency, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, China
- Department of Emergency, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Zhang
- Center of Obesity and Metabolic Diseases, Department of General Surgery, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Tao Xiang
- Department of Emergency, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, China
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7
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Chung KP, Cheng CN, Chen YJ, Hsu CL, Huang YL, Hsieh MS, Kuo HC, Lin YT, Juan YH, Nakahira K, Chen YF, Liu WL, Ruan SY, Chien JY, Plataki M, Cloonan SM, Carmeliet P, Choi AMK, Kuo CH, Yu CJ. Alveolar epithelial cells mitigate neutrophilic inflammation in lung injury through regulating mitochondrial fatty acid oxidation. Nat Commun 2024; 15:7241. [PMID: 39174557 PMCID: PMC11341863 DOI: 10.1038/s41467-024-51683-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 08/13/2024] [Indexed: 08/24/2024] Open
Abstract
Type 2 alveolar epithelial (AT2) cells of the lung are fundamental in regulating alveolar inflammation in response to injury. Impaired mitochondrial long-chain fatty acid β-oxidation (mtLCFAO) in AT2 cells is assumed to aggravate alveolar inflammation in acute lung injury (ALI), yet the importance of mtLCFAO to AT2 cell function needs to be defined. Here we show that expression of carnitine palmitoyltransferase 1a (CPT1a), a mtLCFAO rate limiting enzyme, in AT2 cells is significantly decreased in acute respiratory distress syndrome (ARDS). In mice, Cpt1a deletion in AT2 cells impairs mtLCFAO without reducing ATP production and alters surfactant phospholipid abundance in the alveoli. Impairing mtLCFAO in AT2 cells via deleting either Cpt1a or Acadl (acyl-CoA dehydrogenase long chain) restricts alveolar inflammation in ALI by hindering the production of the neutrophilic chemokine CXCL2 from AT2 cells. This study thus highlights mtLCFAO as immunometabolism to injury in AT2 cells and suggests impaired mtLCFAO in AT2 cells as an anti-inflammatory response in ARDS.
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Grants
- 109-O04, 110-O07, 110-S4872, 111-S0075, 113-S0079 National Taiwan University Hospital (NTUH)
- NTUCDP-112L7745, NTUCDP-112L7746, 110T099, NTU-NFG-110L7422 National Taiwan University (NTU)
- National Science and Technology Council (Taiwan) (MOST-108-2628-B-002-017 [K.P.C.], MOST-109-2628-B-002-044 [K.P.C.], MOST-110-2628-B-002-029 [K.P.C.], MOST-110-2628-B-002-045-MY3 [K.P.C.], MOST-111-2628-B-002-030-MY3 [K.P.C.])
- National Science and Technology Council (Taiwan), MOST 107-2314-B-002-235-MY3
- National Science and Technology Council (Taiwan), MOST 110-2314-B-002-262
- National Taiwan University School of Pharmacy Endowment Fund in support of the Platform for Clinical Mass Spectrometry and NMR Structure Elucidation
- Research funding provided by Mr. Barry Lam, the chairman of Quanta Computer Inc
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Affiliation(s)
- Kuei-Pin Chung
- Department of Laboratory Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chih-Ning Cheng
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Jung Chen
- Department of Laboratory Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Lang Hsu
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Lin Huang
- Department of Pathology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Min-Shu Hsieh
- Department of Pathology, National Taiwan University Cancer Center, Taipei, Taiwan
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Pathology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Han-Chun Kuo
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Ya-Ting Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Hsiu Juan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kiichi Nakahira
- Department of Pharmacology, Nara Medical University, Kashihara, Nara, Japan
| | - Yen-Fu Chen
- Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Wei-Lun Liu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, Taiwan
- Department of Critical Care Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei, Taiwan
| | - Sheng-Yuan Ruan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jung-Yien Chien
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Maria Plataki
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- New York Presbyterian Hospital-Weill Cornell Medical Center, New York, NY, USA
| | - Suzanne M Cloonan
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, Leuven, Belgium
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Augustine M K Choi
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- New York Presbyterian Hospital-Weill Cornell Medical Center, New York, NY, USA
| | - Ching-Hua Kuo
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan.
- The Metabolomics Core Laboratory, Centers of Genomic and Precision Medicine, National Taiwan University, Taipei, Taiwan.
- Department of Pharmacy, National Taiwan University Hospital, Taipei, Taiwan.
| | - Chong-Jen Yu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
- Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan.
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Zhu Y, Hao S, Wu Y, Lin Y, Liu X, Luo T, Zhou Y, Yang X, Xu H. New insight into the molecular mechanism of TCM Bufei Huoxue formula for chronic obstructive pulmonary disease based on network pharmacology and experimental verification. J Pharm Pharmacol 2024:rgae071. [PMID: 39173028 DOI: 10.1093/jpp/rgae071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/27/2024] [Indexed: 08/24/2024]
Abstract
OBJECTIVES To unveil the mechanism of the Bufei Huoxue formula (BHF) for chronic obstructive pulmonary disease (COPD) through integrated network pharmacology (NP) and experimental verification. METHODS LC-MS was first applied to the analysis of both in vitro and in vivo samples from BHF for chemical profiling. Then a ligand library was prepared for NP to reveal the mechanism of BHF against COPD. Finally, verification was performed using an animal model related to the results from the NP. KEY FINDINGS A ligand library containing 170 compounds from BHF was obtained, while 357 targets related to COPD were filtered to construct a PPI network. GO and KEGG analysis demonstrated that bavachin, paeoniflorin, and demethylation of formononetin were the major compounds for BHF against COPD, which mainly by regulating the PI3K/Akt pathway. The experiments proved that BHF could alleviate lung injury and attenuate the release of TNF-α and IL-6 in the lung and BALF in a dose-dependent manner. Western blot further demonstrated the down-regulated effect of BHF on p-PI3K. CONCLUSION BHF provides a potent alternative for the treatment of COPD, and the mechanism is probably associated with regulating the PI3K/AKT pathway to alleviate inflammatory injury by bavachin, paeoniflorin, and demethylation of formononetin.
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Affiliation(s)
- Yuanying Zhu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Shengyuan Hao
- Yantai Center for Food and Drug Control, Yantai, 264003, China
| | - Yan Wu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Yuxian Lin
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
- Department of Pharmacy, Wenzhou People's Hospital, The Third Affiliated Hospital of Shanghai University, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou, 325099, China
| | - Xuecun Liu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Ting Luo
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Yubing Zhou
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Hui Xu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
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9
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Gao S, Li W, Huang Z, Deiuliis JA, Braunstein Z, Liu X, Li X, Kosari M, Chen J, Min X, Yang H, Gong Q, Liu Z, Wei Y, Zhang Z, Dong L, Zhong J. Deciphering the therapeutic potential of Myeloid-Specific JAK2 inhibition in acute respiratory distress syndrome. Mucosal Immunol 2024:S1933-0219(24)00089-8. [PMID: 39173745 DOI: 10.1016/j.mucimm.2024.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 08/09/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024]
Abstract
Acute respiratory distress syndrome (ARDS) is a life-threatening condition characterized by severe inflammation and pulmonary dysfunction. Despite advancements in critical care, effective pharmacological interventions for ARDS remain elusive. While Janus kinase 2 (JAK2) inhibitors have emerged as an innovative treatment for numerous autoinflammatory diseases, their therapeutic potential in ARDS remains unexplored. In this study, we investigated the contribution of JAK2 and its underlying mechanisms in ARDS utilizing myeloid-specific JAK2 knockout murine models alongside a pharmacological JAK2 inhibitor. Notably, myeloid-specific JAK2 knockout led to a notable attenuation of ARDS induced by intratracheal administration of LPS, accompanied by reduced levels of neutrophils and inflammatory cytokines in bronchoalveolar lavage fluid (BALF) and lung tissue. Intriguingly, the ameliorative effects were abolished upon the depletion of monocyte-derived alveolar macrophages (Mo-AMs) rather than tissue-resident alveolar macrophages (TR-AMs). JAK2 deficiency markedly reversed LPS-induced activation of STAT5 in macrophages. Remarkably, pharmacological JAK2 inhibition using baricitinib failed to substantially alleviate neutrophils infiltration, implying that specific inhibition of JAK2 in Mo-AMs is imperative for ARDS amelioration. Collectively, our data suggest that JAK2 may mitigate ARDS progression through the JAK2 pathway in Mo-AMs, underscoring JAK2 in alveolar macrophages, particularly Mo-AMs, as a promising therapeutic target for ARDS treatment.
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Affiliation(s)
- Shupei Gao
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Wenjuan Li
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Zhiwen Huang
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Jeffrey A Deiuliis
- Cardiovascular Research Institute, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Zachary Braunstein
- Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA
| | - Xinxin Liu
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Xinlu Li
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Mohammadreza Kosari
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Jun Chen
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Hubei Key Laboratory of Wudang Local Chinese Medicine Research (Hubei University of Medicine), Shiyan, Hubei 442008, China
| | - Xinwen Min
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Hubei Key Laboratory of Wudang Local Chinese Medicine Research (Hubei University of Medicine), Shiyan, Hubei 442008, China
| | - Handong Yang
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Hubei Key Laboratory of Wudang Local Chinese Medicine Research (Hubei University of Medicine), Shiyan, Hubei 442008, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, Hubei 434023, China
| | - Zheng Liu
- Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Yingying Wei
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Ziyang Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Qiaokou District, Wuhan 430030, China
| | - Lingli Dong
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China.
| | - Jixin Zhong
- Department of Rheumatology and Immunology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Cardiovascular Research Institute, Case Western Reserve University, Cleveland, OH 44106, USA; Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Key Laboratory of Vascular Aging (HUST), Ministry of Education, Wuhan, Hubei 430030, China.
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10
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Pokharel MD, Fu P, Garcia-Flores A, Yegambaram M, Lu Q, Sun X, Unwalla H, Aggarwal S, Fineman JR, Wang T, Black SM. Inflammatory lung injury is associated with endothelial cell mitochondrial fission and requires the nitration of RhoA and cytoskeletal remodeling. Free Radic Biol Med 2024; 221:125-135. [PMID: 38734269 PMCID: PMC11179967 DOI: 10.1016/j.freeradbiomed.2024.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/12/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
Higher levels of extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a TLR4 agonist, are associated with poor clinical outcomes in sepsis-induced acute lung injury (ALI). Little is known regarding the mechanisms by which eNAMPT is involved in ALI. Our recent work has identified a crucial role for mitochondrial dysfunction in ALI. Thus, this study aimed to determine if eNAMPT-mediated inflammatory injury is associated with the loss of mitochondrial function. Our data show that eNAMPT disrupted mitochondrial bioenergetics. This was associated with cytoskeleton remodeling and the loss of endothelial barrier integrity. These changes were associated with enhanced mitochondrial fission and blocked when Rho-kinase (ROCK) was inhibited. The increases in mitochondrial fission were also associated with the nitration-mediated activation of the small GTPase activator of ROCK, RhoA. Blocking RhoA nitration decreased eNAMPT-mediated mitochondrial fission and endothelial barrier dysfunction. The increase in fission was linked to a RhoA-ROCK mediated increase in Drp1 (dynamin-related protein 1) at serine(S)616. Another TLR4 agonist, lipopolysaccharide (LPS), also increased mitochondrial fission in a Drp1 and RhoA-ROCK-dependent manner. To validate our findings in vivo, we challenged C57BL/6 mice with eNAMPT in the presence and absence of the Drp1 inhibitor, Mdivi-1. Mdivi-1 treatment protected against eNAMPT-induced lung inflammation, edema, and lung injury. These studies demonstrate that mitochondrial fission-dependent disruption of mitochondrial function is essential in TLR4-mediated inflammatory lung injury and identify a key role for RhoA-ROCK signaling. Reducing mitochondrial fission could be a potential therapeutic strategy to improve ARDS outcomes.
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Affiliation(s)
- Marissa D Pokharel
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA; Center for Translational Science, Florida International University, Port St. Lucie, FL, USA
| | - Panfeng Fu
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA
| | | | - Manivannan Yegambaram
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA
| | - Qing Lu
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA
| | - Xutong Sun
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA
| | - Hoshang Unwalla
- Department of Immunology and Nano-Medicine, Howard Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Saurabh Aggarwal
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, 94143, USA; Department of Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA
| | - Stephen M Black
- Department of Cellular & Molecular Medicine, Herbert Wertheim College of Medicine, Miami, FL, USA; Center for Translational Science, Florida International University, Port St. Lucie, FL, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, University Park, FL, USA.
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11
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Zamora ME, Essien EO, Bhamidipati K, Murthy A, Liu J, Kim H, Patel MN, Nong J, Wang Z, Espy C, Chaudhry FN, Ferguson LT, Tiwari S, Hood ED, Marcos-Contreras OA, Omo-Lamai S, Shuvaeva T, Arguiri E, Wu J, Rauova L, Poncz M, Basil MC, Cantu E, Planer JD, Spiller K, Zepp J, Muzykantov VR, Myerson JW, Brenner JS. Marginated Neutrophils in the Lungs Effectively Compete for Nanoparticles Targeted to the Endothelium, Serving as a Part of the Reticuloendothelial System. ACS NANO 2024; 18:22275-22297. [PMID: 39105696 DOI: 10.1021/acsnano.4c06286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Nanomedicine has long pursued the goal of targeted delivery to specific organs and cell types but has yet to achieve this goal with the vast majority of targets. One rare example of success in this pursuit has been the 25+ years of studies targeting the lung endothelium using nanoparticles conjugated to antibodies against endothelial surface molecules. However, here we show that such "endothelial-targeted" nanocarriers also effectively target the lungs' numerous marginated neutrophils, which reside in the pulmonary capillaries and patrol for pathogens. We show that marginated neutrophils' uptake of many of these "endothelial-targeted" nanocarriers is on par with endothelial uptake. This generalizes across diverse nanomaterials and targeting moieties and was even found with physicochemical lung tropism (i.e., without targeting moieties). Further, we observed this in ex vivo human lungs and in vivo healthy mice, with an increase in marginated neutrophil uptake of nanoparticles caused by local or distant inflammation. These findings have implications for nanomedicine development for lung diseases. These data also suggest that marginated neutrophils, especially in the lungs, should be considered a major part of the reticuloendothelial system (RES), with a special role in clearing nanoparticles that adhere to the lumenal surfaces of blood vessels.
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Affiliation(s)
- Marco E Zamora
- Drexel University School of Biomedical Engineering, Philadelphia, Pennsylvania 19104, United States
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Eno-Obong Essien
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Kartik Bhamidipati
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Aditi Murthy
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Jing Liu
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Hyunjun Kim
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, United States
| | - Manthan N Patel
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Jia Nong
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Zhicheng Wang
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Carolann Espy
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Fatima N Chaudhry
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, United States
| | - Laura T Ferguson
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Sachchidanand Tiwari
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Elizabeth D Hood
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Oscar A Marcos-Contreras
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Serena Omo-Lamai
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Tea Shuvaeva
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Evguenia Arguiri
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Jichuan Wu
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Lubica Rauova
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, United States
| | - Mortimer Poncz
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, United States
| | - Maria C Basil
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Edward Cantu
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Joseph D Planer
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
| | - Kara Spiller
- Drexel University School of Biomedical Engineering, Philadelphia, Pennsylvania 19104, United States
| | - Jarod Zepp
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, United States
| | - Vladimir R Muzykantov
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Jacob W Myerson
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
| | - Jacob S Brenner
- Perelman School of Medicine Department of System Pharmacology and Translational Therapeutics, Philadelphia, Pennsylvania 19104, United States
- Perelman School of Medicine Department of Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania 19104, United States
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12
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Yao Q, Wen J, Chen S, Wang Y, Wen X, Wang X, Li C, Zheng C, Li J, Ma Z, Zhan X, Xiao X, Bai Z. Shuangdan Jiedu Decoction improved LPS-induced acute lung injury by regulating both cGAS-STING pathway and inflammasome. JOURNAL OF ETHNOPHARMACOLOGY 2024:118661. [PMID: 39159837 DOI: 10.1016/j.jep.2024.118661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 07/24/2024] [Accepted: 08/01/2024] [Indexed: 08/21/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Shuangdan Jiedu Decoction (SJD) is a formula composed of six Chinese herbs with heat-removing and detoxifying, antibacterial and anti-inflammatory effects, which is clinically used in the therapy of various inflammatory diseases of the lungs including COVID-19, but the therapeutic material basis of its action as well as its molecular mechanism are still unclear. AIM OF THE STUDY The study attempted to determine the therapeutic effect of SJD on LPS-induced acute lung injury (ALI), as well as to investigate its mechanism of action and assess its therapeutic potential for the cure of inflammation-related diseases in the clinical setting. MATERIALS AND METHODS We established an ALI model by tracheal drip LPS, and after the administration of SJD, we collected the bronchoalveolar lavage fluid and lung tissues of mice and examined the expression of inflammatory factors in them. In addition, we evaluated the effects of SJD on the cyclic guanosine monophosphate-adenosine monophosphate synthase -stimulator of interferon genes (cGAS-STING) and inflammasome by immunoblotting, and real-time quantitative polymerase chain reaction (RT-qPCR). RESULTS We demonstrated that SJD was effective in alleviating LPS-induced ALI by suppressing the levels of pro-inflammatory cytokines in the bronchoalveolar lavage fluid (BALF), improving the level of lung histopathology and the number of neutrophils, as well as decreasing the inflammatory factor-associated gene expression. Importantly, we found that SJD could inhibit multiple stimulus-driven activation of cGAS-STING and inflammasome. Further studies showed that the Chinese herbal medicine in SJD had no influence on the cGAS-STING pathway and inflammasome alone at the formulated dose. By increasing the concentration of these herbs, we observed inhibitory effects on the cGAS-STING pathway and inflammasome, and the effect exerted was maximal when the six herbs were combined, dicating that the synergistic effects among these herbs plays a crucial role in the anti-inflammatory effects of SJD. CONCLUSIONS Our research demonstrated that SJD has a favorable protective effect against ALI, and its mechanism of effect may be associated with the synergistic effect exerted between six Chinese medicines to inhibit the cGAS-STING and inflammasome abnormal activation. These results are favorable for the wide application of SJD in the clinic as well as for the development of drugs for ALI from herbal formulas.
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Affiliation(s)
- Qing Yao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China; Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Jincai Wen
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Simin Chen
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Yan Wang
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Xinru Wen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China; Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Xianling Wang
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Chengwei Li
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Congyang Zheng
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Junjie Li
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China
| | - Zhijie Ma
- Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, 100050, Beijing, China
| | - Xiaoyan Zhan
- Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China; National Key Laboratory of Kidney Diseases, Beijing 100005, China.
| | - Xiaohe Xiao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China; Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China; National Key Laboratory of Kidney Diseases, Beijing 100005, China.
| | - Zhaofang Bai
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, China; Department of Hepatology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100039, China; State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Beijing, 100700, P.R. China; National Key Laboratory of Kidney Diseases, Beijing 100005, China.
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13
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Solopov PA, Biancatelli RMLC, Day T, Dimitropoulou C, Catravas JD. A Novel Non-Rodent Animal Model of Hydrochloric Acid-Induced acute and chronic lung injury. RESEARCH SQUARE 2024:rs.3.rs-4758497. [PMID: 39184076 PMCID: PMC11343285 DOI: 10.21203/rs.3.rs-4758497/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Hydrochloric acid is one of the most prevalent and dangerous chemicals. Accidental spills occur in industrial plants or during transportation. Exposure to HCl can induce severe health impairment, including acute and chronic pulmonary diseases. We have previously described the molecular, structural, and functional aspects of the development of chronic lung injury and pulmonary fibrosis caused by intratracheal instillation of HCl in mice. Although mouse models of human disease have many advantages, rodents are evolutionary far from human and exhibit significant anatomical and physiological differences. Genetic and anatomic similarities between rabbits and humans are significantly higher. Rabbit models of HCl-induced lung injury have been used sparsely to evaluate acute lung injury. In this study, for the first time, we utilized rabbits as a model of HCl-induced pulmonary fibrosis and chronic lung injury. We present molecular, histological, and functional evidence that demonstrate the utility of using this model for studying new pharmaceutics against pulmonary fibrosis.
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14
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Saheb Sharif-Askari F, Zakri AM, Alenazy MF, El-Wetidy MS, Khalid Salah Al-Sheakly B, Saheb Sharif-Askari N, ALKufeidy RM, Omair MA, Al-Muhsen S, Halwani R. IL-35 promotes IL-35 +IL-10 + Bregs and Conventional LAG3 + Tregs in the lung tissue of OVA-Induced Asthmatic Mice. Inflamm Res 2024:10.1007/s00011-024-01925-1. [PMID: 39127869 DOI: 10.1007/s00011-024-01925-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 07/15/2024] [Accepted: 07/22/2024] [Indexed: 08/12/2024] Open
Abstract
AIMS This study aimed to investigate the effect of interleukin-35 (IL-35) on inflamed lung tissue in a murine model of asthma. IL-35 was examined for its potential to induce regulatory lymphocytes during ovalbumin (OVA)-induced acute lung injury. METHODS Female BALB/c mice sensitized with OVA and were treated with recombinant IL-35 (rIL-35) via intranasal or intraperitoneal routes and were administered 4 h before OVA challenge. The effects of rIL-35 treatment on the lung and blood levels of regulatory B cells (Bregs) and regulatory T cells (Tregs), as well as their production of immunosuppressive cytokines, were determined using flow cytometry and enzyme-linked immunosorbent assay (ELISA), respectively. RESULTS Treatment of OVA-sensitized asthmatic mice with rIL-35, whether administered intranasally or intraperitoneally, resulted in reduced lung inflammation and injury. This reduction was accompanied by an increase in the frequency of IL-35 producing Bregs, IL-35 and IL-10 producing Bregs, and conventional LAG3+ Tregs in the lung tissues and blood. This increase was more pronounced with intranasal rIL-35. Furthermore, there was a positive correlation between the levels of these regulatory cells and lung gene expression of IL-35 and IL-10, and an inverse correlation with both lung gene expression and plasma level of IL-17. CONCLUSIONS The results of this study suggest that IL-35, through its ability to increase Bregs and Tregs, is effective in reversing lung inflammation in the context of asthma. Since the increase was more pronounced with intranasal administration, this highlights the therapeutic potential of its local intrapulmonary application in managing asthma-related inflammation.
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Affiliation(s)
- Fatemeh Saheb Sharif-Askari
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah, UAE
| | - Adel M Zakri
- Department of Plant Production, Faculty of Agriculture and Food Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Maha Fahad Alenazy
- Immunology Research Lab, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | | | - Narjes Saheb Sharif-Askari
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Roua M ALKufeidy
- Prince Naif Center for Immunology Research and Asthma Research Chair, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed A Omair
- Rheumatology Unit, Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Saleh Al-Muhsen
- Immunology Research Laboratory, Department of Pediatrics, College of Medicine and King Saud University Medical City , King Saud University, Riyadh, Saudi Arabia
| | - Rabih Halwani
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
- Department of Pediatrics, Faculty of Medicine, Prince Abdullah Ben Khaled Celiac Disease Chair, King Saud University, Riyadh, Saudi Arabia.
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15
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Zhang Y, Wu D, Sun Q, Luo Z, Zhang Y, Wang B, Chen W. Atorvastatin combined with imipenem alleviates lung injury in sepsis by inhibiting neutrophil extracellular trap formation via the ERK/NOX2 signaling pathway. Free Radic Biol Med 2024; 220:179-191. [PMID: 38704053 DOI: 10.1016/j.freeradbiomed.2024.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/25/2024] [Accepted: 05/02/2024] [Indexed: 05/06/2024]
Abstract
Sepsis is a systemic inflammatory response syndrome caused by the invasion of pathogenic microorganisms. Despite major advances in diagnosis and technology, morbidity and mortality remain high. The level of neutrophil extracellular traps (NETs) is closely associated with the progression and prognosis of sepsis, suggesting the regulation of NET formation as a new strategy in sepsis treatment. Owing to its pleiotropic effects, atorvastatin, a clinical lipid-lowering drug, affects various aspects of sepsis-related inflammation and immune responses. To align closely with clinical practice, we combined it with imipenem for the treatment of sepsis. In this study, we used a cecum ligation and puncture-induced lung injury mouse model and employed techniques including western blot, immunofluorescence, and enzyme-linked immunosorbent assay to measure the levels of NETs and other sepsis-related lung injury indicators. Our findings indicate that atorvastatin effectively inhibited the formation of NETs. When combined with imipenem, it significantly alleviated lung injury, reduced systemic inflammation, and improved the 7-day survival rate of septic mice. Additionally, we explored the inhibitory mechanism of atorvastatin on NET formation in vitro, revealing its potential action through the ERK/NOX2 pathway. Therefore, atorvastatin is a potential immunomodulatory agent that may offer new treatment strategies for patients with sepsis in clinical settings.
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Affiliation(s)
- Yue Zhang
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
| | - Di Wu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
| | - Qishun Sun
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
| | - Zhen Luo
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
| | - Yuhao Zhang
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
| | - Bowei Wang
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China.
| | - Wenting Chen
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, The Key Laboratory of Precision Anesthesia & Perioperative Organ Protection, Guangzhou, Guangdong, 510515, China.
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16
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Radbel J, Meshanni JA, Vayas KN, Le-Hoang O, Abramova E, Zhou P, Joseph LB, Laskin JD, Gow AJ, Laskin DL. Effects of ozone exposure on lung injury, inflammation, and oxidative stress in a murine model of nonpneumonic endotoxemia. Toxicol Sci 2024; 200:299-311. [PMID: 38749002 DOI: 10.1093/toxsci/kfae062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024] Open
Abstract
Recent studies have identified exposure to environmental levels of ozone as a risk factor for the development of acute respiratory distress syndrome (ARDS), a severe form of acute lung injury (ALI) that can develop in humans with sepsis. The aim of this study was to develop a murine model of ALI to mechanistically explore the impact of ozone exposure on ARDS development. Mice were exposed to ozone (0.8 ppm, 3 h) or air control followed 24 h later by intravenous administration of 3 mg/kg lipopolysaccharide (LPS) or PBS. Exposure of mice to ozone + LPS caused alveolar hyperplasia; increased BAL levels of albumin, IgM, phospholipids, and proinflammatory mediators including surfactant protein D and soluble receptor for advanced glycation end products were also detected in BAL, along with markers of oxidative and nitrosative stress. Administration of ozone + LPS resulted in an increase in neutrophils and anti-inflammatory macrophages in the lung, with no effects on proinflammatory macrophages. Conversely, the numbers of resident alveolar macrophages decreased after ozone + LPS; however, expression of Nos2, Arg1, Cxcl1, Cxcl2, Ccl2 by these cells increased, indicating that they are activated. These findings demonstrate that ozone sensitizes the lung to respond to endotoxin, resulting in ALI, oxidative stress, and exacerbated pulmonary inflammation, and provide support for the epidemiologic association between ozone exposure and ARDS incidence.
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Affiliation(s)
- Jared Radbel
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey 08901, USA
| | - Jaclynn A Meshanni
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Kinal N Vayas
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Oahn Le-Hoang
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey 08901, USA
| | - Elena Abramova
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Peihong Zhou
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Laurie B Joseph
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Jeffrey D Laskin
- Department of Environmental and Occupational Health and Justice, School of Public Health, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Andrew J Gow
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Debra L Laskin
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey 08854, USA
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17
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Chen PJ, Chen SH, Chen YL, Wang YH, Lin CY, Chen CH, Tsai YF, Hwang TL. Ribociclib leverages phosphodiesterase 4 inhibition in the treatment of neutrophilic inflammation and acute respiratory distress syndrome. J Adv Res 2024; 62:229-243. [PMID: 38548264 PMCID: PMC11331181 DOI: 10.1016/j.jare.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 04/01/2024] Open
Abstract
INTRODUCTION Overwhelming neutrophil activation and oxidative stress significantly contribute to acute respiratory distress syndrome (ARDS) pathogenesis. However, the potential of repurposing ribociclib, a cyclin-dependent kinase 4 and 6 (CDK4/6) inhibitor used clinically in cancer treatment, for treating neutrophilic ARDS remains uncertain. This study illustrated the ability and underlying mechanism of ribociclib for treating ARDS and neutrophilic inflammation. METHODS Primary human neutrophils were used to determine the therapeutic effects of ribociclib on respiratory bursts, chemotactic responses, and inflammatory signaling. In vitro and silico analyses were performed to determine the underlying molecular mechanisms. The potential of ribociclib repurposing was evaluated using an in vivo ARDS model in lipopolysaccharide (LPS)-primed mice. RESULTS We found that treatment using ribociclib markedly limited overabundant oxidative stress (reactive oxygen species [ROS]) production and chemotactic responses (integrin levels and adhesion) in activated human neutrophils. Ribociclib was also shown to act as a selective inhibitor of phosphodiesterase 4 (PDE4), thereby promoting the cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) pathway, leading to the inhibition of extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) phosphorylation, and calcium influx. Notably, prophylactic administration and post-treatment with ribociclib ameliorated neutrophil infiltration, lung inflammation, accumulation of oxidative stress, pulmonary destruction, and mortality in mice with LPS-induced ARDS. CONCLUSION We demonstrated for the first time that ribociclib serves as a novel PDE4 inhibitor for treating neutrophilic inflammation and ARDS. The repurposing ribociclib and targeting neutrophilic PDE4 offer a potential off-label alternative for treating lung lesions and other inflammatory conditions.
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Affiliation(s)
- Po-Jen Chen
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung 824410, Taiwan; Graduate Institute of Medicine, I-Shou University, Kaohsiung 824410, Taiwan
| | - Shun-Hua Chen
- Departmentof Nursing, Fooyin University, Kaohsiung 831301, Taiwan
| | - Yu-Li Chen
- Research Center for Chinese Herbal Medicine and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333324, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333324, Taiwan
| | - Cheng-Yu Lin
- Department of Pathology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Chun-Hong Chen
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung 824410, Taiwan
| | - Yung-Fong Tsai
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333324, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Tsong-Long Hwang
- Research Center for Chinese Herbal Medicine and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333324, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333324, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333324, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan.
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18
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Qian C, Zhu W, Wang J, Wang Z, Tang W, Liu X, Jin B, Xu Y, Zhang Y, Liang G, Wang Y. Cyclic-di-GMP induces inflammation and acute lung injury through direct binding to MD2. Clin Transl Med 2024; 14:e1744. [PMID: 39166890 PMCID: PMC11337466 DOI: 10.1002/ctm2.1744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 06/04/2024] [Accepted: 06/08/2024] [Indexed: 08/23/2024] Open
Abstract
BACKGROUND Severe bacterial infections can trigger acute lung injury (ALI) and acute respiratory distress syndrome, with bacterial pathogen-associated molecular patterns (PAMPs) exacerbating the inflammatory response, particularly in COVID-19 patients. Cyclic-di-GMP (CDG), one of the PAMPs, is synthesized by various Gram-positve and Gram-negative bacteria. Previous studies mainly focused on the inflammatory responses triggered by intracellular bacteria-released CDG. However, how extracellular CDG, which is released by bacterial autolysis or rupture, activates the inflammatory response remains unclear. METHODS The interaction between extracellular CDG and myeloid differentiation protein 2 (MD2) was investigated using in vivo and in vitro models. MD2 blockade was achieved using specific inhibitor and genetic knockout mice. Site-directed mutagenesis, co-immunoprecipitation, SPR and Bis-ANS displacement assays were used to identify the potential binding sites of MD2 on CDG. RESULTS Our data show that extracellular CDG directly interacts with MD2, leading to activation of the TLR4 signalling pathway and lung injury. Specific inhibitors or genetic knockout of MD2 in mice significantly alleviated CDG-induced lung injury. Moreover, isoleucine residues at positions 80 and 94, along with phenylalanine at position 121, are essential for the binding of MD2 to CDG. CONCLUSION These results reveal that extracellular CDG induces lung injury through direct interaction with MD2 and activation of the TLR4 signalling pathway, providing valuable insights into bacteria-induced ALI mechanisms and new therapeutic approaches for the treatment of bacterial co-infection in COVID-19 patients.
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Affiliation(s)
- Chenchen Qian
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
| | - Weiwei Zhu
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
| | - Jiong Wang
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
| | - Zhe Wang
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
| | - Weiyang Tang
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
| | - Xin Liu
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
| | - Bo Jin
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
| | - Yong Xu
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
| | - Yuyang Zhang
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
| | - Guang Liang
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouZhejiangChina
- School of Pharmaceutical SciencesHangzhou Medical CollegeHangzhouZhejiangChina
| | - Yi Wang
- School of PharmacyHangzhou Normal UniversityHangzhouZhejiangChina
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19
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Mierzejewski B, Różycka J, Stremińska W, Brągiel-Pieczonka A, Sidor K, Hoser G, Bartoszewicz Z, Gewartowska M, Frontczak-Baniewicz M, Ciemerych MA, Brzóska E, Skirecki T. The Role of Pericytes in Lipopolysaccharide-Induced Murine Acute Respiratory Distress Syndrome. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:1443-1457. [PMID: 38705380 DOI: 10.1016/j.ajpath.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 02/29/2024] [Accepted: 04/02/2024] [Indexed: 05/07/2024]
Abstract
Acute respiratory distress syndrome (ARDS) is a heterogeneous clinical syndrome that is most commonly triggered by infection-related inflammation. Lung pericytes can respond to infection and act as immune and proangiogenic cells; moreover, these cells can differentiate into myofibroblasts in nonresolving ARDS and contribute to the development of pulmonary fibrosis. Here, we aimed to characterize the role of lung cells, which present characteristics of pericytes, such as peri-endothelial location and expression of a panel of specific markers. A murine model of lipopolysaccharide (LPS)-induced resolving ARDS was used to study their role in ARDS. The development of ARDS was confirmed after LPS instillation, which was resolved 14 days after onset. Immunofluorescence and flow cytometry showed early expansion of neural-glial antigen 2+ β-type platelet-derived growth factor receptor+ pericytes in murine lungs with loss of CD31+ β-type platelet-derived growth factor receptor+ endothelial cells. These changes were accompanied by specific changes in lung structure and loss of vascular integrity. On day 14 after ARDS onset, the composition of pericytes and endothelial cells returned to baseline values. LPS-induced ARDS activated NOTCH signaling in lung pericytes, the inhibition of which during LPS stimulation reduced the expression of its downstream target genes, pericyte markers, and angiogenic factors. Together, these data indicate that lung pericytes in response to inflammatory injury activate NOTCH signaling that supports their maintenance and in turn can contribute to recovery of the microvascular endothelium.
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Affiliation(s)
- Bartosz Mierzejewski
- Department of Cytology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Justyna Różycka
- Department of Cytology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Aneta Brągiel-Pieczonka
- Department of Translational Immunology and Experimental Intensive Care, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Karolina Sidor
- Department of Translational Immunology and Experimental Intensive Care, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Grażyna Hoser
- Department of Translational Immunology and Experimental Intensive Care, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Zbigniew Bartoszewicz
- Department of Internal Diseases and Endocrinology, Medical University of Warsaw, Warsaw, Poland
| | - Magdalena Gewartowska
- Electron Microscopy Research Unit, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | | | - Maria A Ciemerych
- Department of Cytology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Edyta Brzóska
- Department of Cytology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Tomasz Skirecki
- Department of Translational Immunology and Experimental Intensive Care, Centre of Postgraduate Medical Education, Warsaw, Poland.
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20
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Taheri P, Dave DD, Dash RK, Sharma GP, Clough AV, Jacobs ER, Audi SH. Mitochondrial function in lungs of rats with different susceptibilities to hyperoxia-induced acute lung injury. J Appl Physiol (1985) 2024; 137:233-253. [PMID: 38867668 DOI: 10.1152/japplphysiol.00243.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/14/2024] Open
Abstract
Adult rats exposed to hyperoxia (>95% O2) die from respiratory failure in 60-72 h. However, rats preconditioned with >95% O2 for 48 h followed by 24 h in room air acquire tolerance of hyperoxia (H-T), whereas rats preconditioned with 60% O2 for 7 days become more susceptible (H-S). Our objective was to evaluate lung tissue mitochondrial bioenergetics in H-T and H-S rats. Bioenergetics was assessed in mitochondria isolated from lung tissue of H-T, H-S, and control rats. Expressions of complexes involved in oxidative phosphorylation (OxPhos) were measured in lung tissue homogenate. Pulmonary endothelial filtration coefficient (Kf) and tissue mitochondrial membrane potential (Δψm) were evaluated in isolated perfused lungs (IPLs). Results show that ADP-induced state 3 OxPhos capacity (Vmax) decreased in H-S mitochondria but increased in H-T. Δψm repolarization time following ADP-stimulated depolarization increased in H-S mitochondria. Complex I expression decreased in H-T (38%) and H-S (43%) lung homogenate, whereas complex V expression increased (70%) in H-T lung homogenate. Δψm is unchanged in H-S and H-T lungs, but complex II has a larger contribution to Δψm in H-S than H-T lungs. Kf increased in H-S, but not in H-T lungs. For H-T, increased complex V expression and Vmax counter the effect of the decrease in complex I expression on Δψm. A larger complex II contribution to Δψm along with decreased Vmax and increased Kf could make H-S rats more hyperoxia susceptible. Results are clinically relevant since ventilation with ≥60% O2 is often required for extended periods in patients with acute respiratory distress syndrome (ARDS).NEW & NOTEWORTHY We assessed lung tissue mitochondrial bioenergetics in rats with tolerance (H-T) or susceptibility (H-S) to hyperoxia-induced ARDS. Results from studies in isolated mitochondria, tissue homogenate, and isolated perfused lungs show that mitochondrial bioenergetics are differentially altered in H-T and H-S lungs suggesting a potential role for mitochondrial bioenergetics in hyperoxia-induced ARDS. Results are clinically relevant since hyperoxia exposure is a primary therapy for patients with ARDS, and differential sensitivity to hyperoxia surely occurs in humans.
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Affiliation(s)
- Pardis Taheri
- Department of Biomedical Engineering, Medical College of Wisconsin, Marquette University, Milwaukee, Wisconsin, United States
| | - Devanshi D Dave
- Department of Biomedical Engineering, Medical College of Wisconsin, Marquette University, Milwaukee, Wisconsin, United States
| | - Ranjan K Dash
- Department of Biomedical Engineering, Medical College of Wisconsin, Marquette University, Milwaukee, Wisconsin, United States
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Guru P Sharma
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Anne V Clough
- Department of Biomedical Engineering, Medical College of Wisconsin, Marquette University, Milwaukee, Wisconsin, United States
- Research Service, Clement J. Zablocki V.A. Medical Center, Milwaukee, Wisconsin, United States
- Department of Mathematical and Statistical Sciences, Marquette University, Milwaukee, Wisconsin, United States
| | - Elizabeth R Jacobs
- Research Service, Clement J. Zablocki V.A. Medical Center, Milwaukee, Wisconsin, United States
- Division of Pulmonary and Critical Care Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Said H Audi
- Department of Biomedical Engineering, Medical College of Wisconsin, Marquette University, Milwaukee, Wisconsin, United States
- Research Service, Clement J. Zablocki V.A. Medical Center, Milwaukee, Wisconsin, United States
- Division of Pulmonary and Critical Care Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
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21
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Wang M, Wu D, Liao X, Hu H, Gao J, Meng L, Wang F, Xu W, Gao S, Hua J, Wang Y, Li Q, Wang K, Gao W. CPT1A-IL-10-mediated macrophage metabolic and phenotypic alterations ameliorate acute lung injury. Clin Transl Med 2024; 14:e1785. [PMID: 39090662 PMCID: PMC11294017 DOI: 10.1002/ctm2.1785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/26/2024] [Accepted: 07/18/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) is a common acute respiratory failure due to diffuse pulmonary inflammation and oedema. Elaborate regulation of macrophage activation is essential for managing this inflammatory process and maintaining tissue homeostasis. In the past decades, metabolic reprogramming of macrophages has emerged as a predominant role in modulating their biology and function. Here, we observed reduced expression of carnitine palmitoyltransferase 1A (CPT1A), a key rate-limiting enzyme of fatty acid oxidation (FAO), in macrophages of lipopolysaccharide (LPS)-induced ALI mouse model. We assume that CPT1A and its regulated FAO is involved in the regulation of macrophage polarization, which could be positive regulated by interleukin-10 (IL-10). METHODS After nasal inhalation rIL-10 and/or LPS, wild type (WT), IL-10-/-, Cre-CPT1Afl/fl and Cre+CPT1Afl/fl mice were sacrificed to harvest bronchoalveolar lavage fluid, blood serum and lungs to examine cell infiltration, cytokine production, lung injury severity and IHC. Bone marrow-derived macrophages (BMDMs) were extracted from mice and stimulated by exogenous rIL-10 and/or LPS. The qRT-PCR, Seahorse XFe96 and FAO metabolite related kits were used to test the glycolysis and FAO level in BMDMs. Immunoblotting assay, confocal microscopy and fluorescence microplate were used to test macrophage polarization as well as mitochondrial structure and function damage. RESULTS In in vivo experiments, we found that mice lacking CPT1A or IL-10 produced an aggravate inflammatory response to LPS stimulation. However, the addition of rIL-10 could alleviate the pulmonary inflammation in mice effectively. IHC results showed that IL-10 expression in lung macrophage decreased dramatically in Cre+CPT1Afl/fl mice. The in vitro experiments showed Cre+CPT1Afl/fl and IL-10-/- BMDMs became more "glycolytic", but less "FAO" when subjected to external attacks. However, the supplementation of rIL-10 into macrophages showed reverse effect. CPT1A and IL-10 can drive the polarization of BMDM from M1 phenotype to M2 phenotype, and CPT1A-IL-10 axis is also involved in the process of maintaining mitochondrial homeostasis. CONCLUSIONS CPT1A modulated metabolic reprogramming and polarisation of macrophage under LPS stimulation. The protective effects of CPT1A may be partly attributed to the induction of IL-10/IL-10 receptor expression.
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Affiliation(s)
- Muyun Wang
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Di Wu
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Ximing Liao
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Haiyang Hu
- Department of Vascular SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jing Gao
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Linlin Meng
- Second Department of Respiratory and Critical Care MedicineThe Fourth People's Hospital of JinanShandongChina
| | - Feilong Wang
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Wujian Xu
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Shaoyong Gao
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Jing Hua
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Yuanyuan Wang
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Qiang Li
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Kun Wang
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Wei Gao
- Department of Pulmonary and Critical Care MedicineShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
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22
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Liu X, Li Y, Zhang W, Gao N, Chen J, Xiao C, Zhang G. Inhibition of cIAP1/2 reduces RIPK1 phosphorylation in pulmonary endothelial cells and alleviate sepsis-induced lung injury and inflammatory response. Immunol Res 2024; 72:841-850. [PMID: 38748318 DOI: 10.1007/s12026-024-09491-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 05/08/2024] [Indexed: 06/01/2024]
Abstract
Acute respiratory distress syndrome (ARDS)/acute lung injury (ALI) is a severe complication of sepsis characterized by acute respiratory distress, hypoxemia, and diffuse bilateral pulmonary infiltrates. The regulation of RIPK1 is an important part of the inflammatory response, and cIAP1/2 serves as the E3 ubiquitin ligase for RIPK1. In this study, we investigated the effect and mechanism of cIAP1/2 inhibition on sepsis-induced lung injury. Our results showed that cIAP1/2 inhibition can alleviate sepsis-induced lung injury and reduce the inflammatory response, which is accompanied by downregulation of RIPK1 phosphorylation and ubiquitination. Additionally, cIAP1/2 inhibition led to the up-regulation of programmed cell death, including apoptosis, necroptosis, and pyroptosis, and inhibiting these three cell death pathways can further reduce the inflammatory response, which is similar to the recently discovered programmed cell death pathway PANoptosis. Our findings suggest that cIAP1/2 and PANoptosis inhibition may be a new strategy for treating sepsis-induced lung injury and provide important references for further exploring the mechanism of sepsis-induced lung injury and identifying new therapeutic targets.
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Affiliation(s)
- Xiaoyu Liu
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Yan Li
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Weijian Zhang
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
- Peking University, China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Nan Gao
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Jie Chen
- China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Cheng Xiao
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China.
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing, China.
| | - Guoqiang Zhang
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China.
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Joo HK, Kim S, Choi E, Jin H, Lee YR, Lee EO, Kim CS, Jeon BH. Heterozygous Apex1 deficiency exacerbates lipopolysaccharide-induced systemic inflammation in a murine model. Free Radic Biol Med 2024; 223:96-108. [PMID: 39067624 DOI: 10.1016/j.freeradbiomed.2024.07.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/26/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
The biological role of apurinic/apyrimidinic endonuclease 1/redox factor-1 (Apex1) in modulating systemic inflammation remains unclear. This study aimed to assess the impact of Apex1 deficiency on systemic inflammation triggered by lipopolysaccharide (LPS) in a murine model. The methods involved transcriptomic analysis and assessments of inflammatory responses in age-matched 8-week-old Apex1+/- and wild-type Apex1+/+ mice, generated using the CRISPR/Cas9 system. Apex1+/- mice displayed no overt changes in body weight, however, Apex1 protein expressions in tissues were significantly reduced compared to wild-type mice. Furthermore, in Apex1+/- mice transcriptomic analysis showed that genes associated with antioxidant pathways were downregulated, and levels of superoxide production, 8-hydroxy-2'-deoxyguanosine (8-OHdG), and malondialdehyde (MDA) were increased. Moreover, hematological analysis showed increased neutrophil levels and a twofold increase in the count of splenic lymphocyte antigen 6 family member G+ (Ly6G+) neutrophils in the Apex1+/- mice compared to those in Apex1+/+ mice. Furthermore, following LPS treatment, the levels of cytokines and chemokines, including interleukin-1β, interleukin-10, tumor necrosis factor-α, and monocyte chemoattractant protein 1, increased in the Apex1+/- mice. The Kaplan-Meier curve showed a significant reduction in the survival rates of Apex1+/- mice treated with LPS compared to those of Apex1+/+ mice. The hepatic and lung injury scores and Ly6G+ neutrophil infiltration levels also increased in Apex1+/- mice after LPS treatment. These results showed that Apex1 deficiency exacerbated the LPS-induced tissue damage in the lung and liver. These findings illustrate that in vivo Apex1 deficiency exacerbates LPS-induced systemic inflammation, tissue damage, and mortality in a murine model, highlighting the crucial role of Apex1 in mitigating inflammatory responses and maintaining a holistic physiological equilibrium.
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Affiliation(s)
- Hee Kyoung Joo
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Sungmin Kim
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Eunju Choi
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Hao Jin
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Yu-Ran Lee
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Eun-Ok Lee
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Cuk-Seong Kim
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea
| | - Byeong Hwa Jeon
- Research Institute of Medical Sciences, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea; Department of Physiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.
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Leal APF, Nieto Marín V, Cabistany VV, Morales J, Buccini DF, Franco OL. Applicability of mouse models for induction of severe acute lung injury. Pulm Pharmacol Ther 2024; 86:102316. [PMID: 39069252 DOI: 10.1016/j.pupt.2024.102316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/13/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
Acute lung injury (ALI) is a significant clinical challenge associated with high morbidity and mortality. Worldwide, it affects approximately 200.000 individuals annually, with a staggering 40 % mortality rate in hospitalized cases and persistent complications in out-of-hospital cases. This review focuses on the key immunological pathways underlying bacterial ALI and the exploration of mouse models as tools for its induction. These models serve as indispensable platforms for unraveling the inflammatory cascades and biological responses inherent to ALI, while also facilitating the evaluation of novel therapeutic agents. However, their utility is not without challenges, mainly due to the stringent biosafety protocols required by the diverse bacterial virulence profiles. Simple and reproducible models of pulmonary bacterial infection are currently available, including intratracheal, intranasal, pleural and, intraperitoneal approaches. These models use endotoxins such as commercially available lipopolysaccharide (LPS) or live pathogens such as Pseudomonas aeruginosa, Mycobacterium tuberculosis, and Streptococcus pneumoniae, all of which are implicated in the pathogenesis of ALI. Combining murine models of bacterial lung infection with in-depth studies of the underlying immunological mechanisms is a cornerstone in advancing the therapeutic landscape for acute bacterial lung injury.
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Affiliation(s)
- Ana Paula Ferreira Leal
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil
| | - Valentina Nieto Marín
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil
| | - Vinícius Varzim Cabistany
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil
| | - Júlia Morales
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil
| | - Danieli Fernanda Buccini
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil
| | - Octávio Luiz Franco
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Pontifícia Universidade Católica Dom Bosco, Campo Grande, MS, 79117900, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Pontifícia Universidade Católica de Brasília, Brasília, DF, 70790160, Brazil.
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Li L, Ma L, Qian H, Wang Z, Chen M, Wang C, Gu W, Lv T, Jin J. GGPPS Negatively Regulates the Formation of Neutrophil Extracellular Traps in Lipopolysaccharide-Induced Acute Lung Injury. Inflammation 2024:10.1007/s10753-024-02104-4. [PMID: 39052180 DOI: 10.1007/s10753-024-02104-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 07/06/2024] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
Acute respiratory distress syndrome (ARDS) and acute lung injury (ALI) are life-threatening diseases. Neutrophil extracellular traps (NETs) play a key role in lung damage. Geranylgeranyl diphosphate synthase (GGPPS) is associated with the development of inflammatory diseases. We aimed to explore the role of GGPPS in NETs formation in ARDS/ALI. First, lung pathological changes in lipopolysaccharide (LPS)-induced ALI mice after myeloid-specific GGPPS deletion were evaluated. The level of NETs formation was analyzed by immunofluorescence, PicoGreen assay and Western blotting. Next, we determined the role of GGPPS in NETs formation and underlying mechanisms using immunofluorescence, flow cytometry, DCFH-DA, and SYTOX GREEN staining in vitro. Finally, the correlation between GGPPS expression incirculating neutrophils and dsDNA levels in plasma was evaluated. Myeloid-specific GGPPS deletion mice showed increased NETs deposition in lung tissue and aggravated histopathological damage of lung tissue. In vitro, GGPPS deficiency in neutrophils resulted in increased NETs formation by Phorbol-12-myristate-13-acetate (PMA), which was reversed by Geranylgeranyl diphosphate (GGPP). In addition, inhibitors blocking protein kinase C (PKC) and NADPH-oxidase (NOX) decreased NETs formation induced by GGPPS deletion. Importantly, GGPPS expression in circulating neutrophils was decreased in ARDS patients compared with the healthy control, and the level of dsDNA in plasma of ARDS patients was negatively correlated with the GGPPS expression. Taken together, GGPPS deficiency in neutrophils aggravates LPS-induced lung injury by promoting NETs formation via PKC/NOX signaling. Thus, neutrophil GGPPS could be a key therapeutic target for ARDS.
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Affiliation(s)
- Lulu Li
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
- Department of Respiratory and Critical Care Medicine, Jinling Hospital, No. 305, East Zhongshan Road, Nanjing, 210002, China
| | - Lihong Ma
- Department of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, No. 305, East Zhongshan Road, Nanjing, 210002, China
- Department of Respiratory and Critical Care Medicine, Wuxi No. 2 People's Hospital, No. 68, Zhongshan Road, Wuxi, 214086, China
| | - Hong Qian
- Department of Orthopaedic Surgery, Jinling Hospital, No. 305, East Zhongshan Road, Nanjing, 210002, China
| | - Zheng Wang
- Department of Science and Technology, Kangda College, Nanjing Medical University, No. 88, Chunhui Road, Lianyungang, 222000, China
| | - Meizi Chen
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Chenzhou, The First School of Clinical Medicine, Southern Medical University, No. 102, Luojiajing Road, Chenzhou, 423000, China
- Department of Respiratory and Critical Care Medicine, Affiliated the First People's Hospital of Chenzhou, University of South China, No. 102, Luojiajing Road, Chenzhou, 423000, China
| | - Chunlei Wang
- Department of Endocrinology, The Fourth Affiliated Hospital of Nantong University, No. 37, Chenggang Road, Nantong, 226001, China
- Department of Endocrinology, The First People's Hospital of Yancheng, No. 66, South Renmin Road, Yancheng, 224006, China
| | - Wei Gu
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China.
| | - Tangfeng Lv
- Department of Respiratory and Critical Care Medicine, Jinling Hospital, No. 305, East Zhongshan Road, Nanjing, 210002, China.
| | - Jiajia Jin
- Department of Respiratory and Critical Care Medicine, Jinling Hospital, No. 305, East Zhongshan Road, Nanjing, 210002, China.
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Zhang S, Huang R, Jing J, Wei X, Zhang Y, Wu Y, Ou G, Hu J, Wu Y, Li Y, Ying S, You Z. A phytomedicine extract exerts an anti-inflammatory response in the lungs by reducing STING-mediated type I interferon release. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155373. [PMID: 38850630 DOI: 10.1016/j.phymed.2024.155373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/04/2024] [Accepted: 01/16/2024] [Indexed: 06/10/2024]
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) is an acute respiratory disease characterized by bilateral chest radiolucency and severe hypoxemia. Quzhou Fructus Aurantii ethyl acetate extract (QFAEE), which is prepared from the traditional Chinese respiratory anti-inflammatory natural herb Quzhou Fructus Arantii, has the potential to alleviate ARDS. In this work, we aimed to investigate the potential and mechanism underlying the action of QFAEE on ARDS and how QFAEE modulates the STING pathway to reduce type I interferon release to alleviate the inflammatory response. METHODS Lipopolysaccharide (LPS), a potential proinflammatory stimulant capable of causing pulmonary inflammation with edema after nasal drops, was employed to model ARDS in vitro and in vivo. Under QFAEE intervention, the mechanism of action of QFAEE to alleviate ARDS was explored in this study. TREX1-/- mice were sued as a research model for the activation of the congenital STING signaling pathway. The effect of QFAEE on TREX1-/- mice could explain the STING-targeted effect of QFAEE on alleviating the inflammatory response. Our explorations covered several techniques, Western blot, histological assays, immunofluorescence staining, transcriptomic assays and qRT-PCR to determine the potential mechanism of action of QFAEE in antagonizing the inflammatory response in the lungs, as well as the mechanism of action of QFAEE in targeting the STING signaling pathway to regulate the release of type I interferon. RESULTS QFAEE effectively alleviates ARDS symptoms in LPS-induced ARDS. We revealed that the mechanism underlying LPS-induced ARDS is the STING-TBK1 signaling pathway and further elucidated the molecular mechanism of QFAEE in the prevention and treatment of ARDS. QFAEE reduced the release of type I interferons by inhibiting the STING-TBK1-IRF3 axis, thus alleviating LPS-induced pneumonia and lung cell death in mice. Another key finding is that activation of the STING pathway by activators or targeted knockdown of the TREX1 gene can also induce ARDS. As expected, QFAEE was found to be an effective protective agent in alleviating ARDS and the antagonistic effect of QFAEE on ARDS was achieved by inhibiting the STING signaling pathway. CONCLUSIONS The main anti-inflammatory effect of QFAEE was achieved by inhibiting the STING signaling pathway and reducing the release of type I interferons. According to this mechanism of effect, QFAEE can effectively alleviate ARDS and can be considered a potential therapeutic agent. In addition, the STING pathway plays an essential role in the development and progression of ARDS, and it is a potential target for ARDS therapy.
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Affiliation(s)
- Sheng Zhang
- Center for Safety Evaluation and Research, Hangzhou Medical College, Hangzhou 310013, China
| | - Rongrong Huang
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China
| | - Junsong Jing
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China
| | - Xueping Wei
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China
| | - Yu Zhang
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China
| | - Youping Wu
- National Clinical Research Center for Child Health, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - Guoteng Ou
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China
| | - Jingjin Hu
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China
| | - Yueguo Wu
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 310013, China
| | - Yuanyuan Li
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 310013, China
| | - Shibo Ying
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; National Clinical Research Center for Child Health, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310000, China.
| | - Zhenqiang You
- School of Public Health, Hangzhou Medical College, 182 Tianmushan Road, Hangzhou 310013, China; School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China; Key discipline of Zhejiang Province in Public Health and Preventive Medicine (First Class, Category A), Hangzhou Medical College, China.
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27
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Li Z, Yu Y, Bu Y, Liu C, Liu E, Jin J, Chen G, Li C, Wang H, Li H, Han L, Zhang Y, Gong W, Luo J, Xiao H, Yue Z. Targeting macrophagic RasGRP1 with catechin hydrate ameliorates sepsis-induced multiorgan dysfunction. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155733. [PMID: 38759314 DOI: 10.1016/j.phymed.2024.155733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 05/01/2024] [Accepted: 05/11/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND The proinflammatory response induced by macrophages plays a crucial role in the development of sepsis and the resulting multiorgan dysfunction. Identifying new regulatory targets for macrophage homeostasis and devising effective treatment strategies remains a significant challenge in contemporary research. PURPOSE This study aims to identify new regulatory targets for macrophage homeostasis and develop effective strategies for treating sepsis. STUDY DESIGN AND METHODS Macrophage infiltration in septic patients and in lungs, kidneys, and brains of caecum ligation and puncture (CLP)-induced septic mice was observed using CIBERSORT and immunofluorescence (IF). Upon integrating the MSigDB database and GSE65682 dataset, differently expressed macrophage-associated genes (DEMAGs) were identified. Critical DEMAGs were confirmed through machine learning. The protein level of the critical DEMAG was detected in PBMCs of septic patients, RAW264.7 cells, and mice lungs, kidneys, and brains using ELISA, western blot, immunohistochemistry, and IF. siRNA was applied to investigate the effect of the critical DEMAG in RAW264.7 cells. A natural product library was screened to find a compound targeting the critical DEMAG protein. The binding of compounds and proteins was analyzed through molecular docking, molecular dynamics simulations, CETSA, and MST analysis. The therapeutic efficacy of the compounds against sepsis was then evaluated through in vitro and in vivo experiments. RESULTS Macrophage infiltration was inversely correlated with survival in septic patients. The critical differentially expressed molecule RasGRP1 was frequently observed in the PBMCs of septic patients, LPS-induced RAW264.7 cells, and the lungs, kidneys, and brains of septic mice. Silencing RasGRP1 alleviated proinflammatory response and oxidative stress in LPS-treated RAW264.7 cells. Catechin Hydrate (CH) was identified as an inhibitor of RasGRP1, capable of maintaining macrophage homeostasis and mitigating lung, kidney, and brain damage during sepsis. CONCLUSION This study demonstrates that RasGRP1, a novel activator of macrophage proinflammatory responses, plays a crucial role in the excessive inflammation and oxidative stress associated with sepsis. CH shows potential for treating sepsis by inhibiting RasGRP1.
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Affiliation(s)
- Zhixi Li
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China; The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, 246 Xuefu Road, Harbin 150001, PR China
| | - Yongjing Yu
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China; The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, 246 Xuefu Road, Harbin 150001, PR China
| | - Yue Bu
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China; Department of Pain Medicine, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China
| | - Chang Liu
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China; The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, 246 Xuefu Road, Harbin 150001, PR China
| | - Enran Liu
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Jiaqi Jin
- The Key Laboratory of Myocardial Ischemia Organization, Chinese Ministry of Education, 246 Xuefu Road, Harbin 150001, PR China; Department of Neurology, Xuanwu Hospital, Capital Medical University, 45 Changchun Road, Beijing 100053, PR China
| | - Guangmin Chen
- Department of Anesthesiology, First Affiliated Hospital of Harbin Medical University, 199 Dazhi Road, Harbin 150001, PR China
| | - Chenglong Li
- Department of Anesthesiology, Fourth Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin 150001, PR China
| | - Hongyu Wang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, 199 Dazhi Road, Harbin 150001, PR China
| | - Hui Li
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Lei Han
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Yan Zhang
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Weidong Gong
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Juan Luo
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Haichuan Xiao
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China
| | - Ziyong Yue
- Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin 150001, PR China; Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, 246 Xuefu Road, Harbin 150001, PR China.
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Johnson BS, Farkas D, El-Mergawy R, Adair JA, Elhance A, Eltobgy M, Coan FM, Chafin L, Joseph JA, Cornwell A, Johns FJ, Rosas L, Rojas M, Farkas L, Bednash JS, Londino JD, Ray P, Ray A, Kagan V, Lee JS, Chen BB, Mallampalli RK. Targeted degradation of extracellular mitochondrial aspartyl-tRNA synthetase modulates immune responses. Nat Commun 2024; 15:6172. [PMID: 39039092 PMCID: PMC11263397 DOI: 10.1038/s41467-024-50031-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 06/26/2024] [Indexed: 07/24/2024] Open
Abstract
The severity of bacterial pneumonia can be worsened by impaired innate immunity resulting in ineffective pathogen clearance. We describe a mitochondrial protein, aspartyl-tRNA synthetase (DARS2), which is released in circulation during bacterial pneumonia in humans and displays intrinsic innate immune properties and cellular repair properties. DARS2 interacts with a bacterial-induced ubiquitin E3 ligase subunit, FBXO24, which targets the synthetase for ubiquitylation and degradation, a process that is inhibited by DARS2 acetylation. During experimental pneumonia, Fbxo24 knockout mice exhibit elevated DARS2 levels with an increase in pulmonary cellular and cytokine levels. In silico modeling identified an FBXO24 inhibitory compound with immunostimulatory properties which extended DARS2 lifespan in cells. Here, we show a unique biological role for an extracellular, mitochondrially derived enzyme and its molecular control by the ubiquitin apparatus, which may serve as a mechanistic platform to enhance protective host immunity through small molecule discovery.
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Affiliation(s)
- Benjamin S Johnson
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Daniela Farkas
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Rabab El-Mergawy
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Jessica A Adair
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Ajit Elhance
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Moemen Eltobgy
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Francesca M Coan
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Lexie Chafin
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Jessica A Joseph
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Alex Cornwell
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Finny J Johns
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Lorena Rosas
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Mauricio Rojas
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Laszlo Farkas
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Joseph S Bednash
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - James D Londino
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA
| | - Prabir Ray
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, the University of Pittsburgh, Pittsburgh, PA, and Sleep Medicine, Pittsburgh, PA, USA
| | - Anuradha Ray
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, the University of Pittsburgh, Pittsburgh, PA, and Sleep Medicine, Pittsburgh, PA, USA
| | - Valerian Kagan
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Janet S Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University, St. Louis, MO, USA
| | - Bill B Chen
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, the University of Pittsburgh, Pittsburgh, PA, and Sleep Medicine, Pittsburgh, PA, USA
| | - Rama K Mallampalli
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, OH, USA.
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Han J, Zhang X, Cai M, Tian F, Xu Y, Chen H, He W, Zhang J, Tian H. TSPO deficiency exacerbates acute lung injury via NLRP3 inflammasome-mediated pyroptosis. Chin Med J (Engl) 2024; 137:1592-1602. [PMID: 38644799 PMCID: PMC11230828 DOI: 10.1097/cm9.0000000000003105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) is a common cause of respiratory failure in many critically ill patients. Although inflammasome activation plays an important role in the induction of acute lung injury (ALI) and ARDS, the regulatory mechanism of this process is still unclear. When cells are stimulated by inflammation, the integrity and physiological function of mitochondria play a crucial part in pyroptosis. However, the underlying mechanisms and function of mitochondrial proteins in the process of pyroptosis are largely not yet known. Here, we identified the 18-kDa translocator protein (TSPO), a mitochondrial outer membrane protein, as an important mediator regulating nucleotide-binding domain, leucine-rich repeat, and pyrin domain-containing protein 3 (NLRP3) inflammasome activation in macrophages during ALI. METHODS TSPO gene knockout (KO) and lipopolysaccharide (LPS)-induced ALI/ARDS mouse models were employed to investigate the biological role of TSPO in the pathogenesis of ARDS. Murine macrophages were used to further characterize the effect of TSPO on the NLRP3 inflammasome pathway. Activation of NLRP3 inflammasome was preformed through LPS + adenosine triphosphate (ATP) co-stimulation, followed by detection of mitochondrial membrane potential, reactive oxygen species (ROS) production, and cell death to evaluate the potential biological function of TSPO. Comparisons between two groups were performed with a two-sided unpaired t -test. RESULTS TSPO- KO mice exhibited more severe pulmonary inflammation in response to LPS-induced ALI. TSPO deficiency resulted in enhanced activation of the NLRP3 inflammasome pathway, promoting more proinflammatory cytokine production of macrophages in LPS-injured lung tissue, including interleukin (IL)-1β, IL-18, and macrophage inflammatory protein (MIP)-2. Mitochondria in TSPO -KO macrophages tended to depolarize in response to cellular stress. The increased production of mitochondrial damage-associated molecular pattern led to enhanced mitochondrial membrane depolarization and pyroptosis in TSPO -KO cells. CONCLUSION TSPO may be the key regulator of cellular pyroptosis, and it plays a vital protective role in ARDS occurrence and development.
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Affiliation(s)
- Jingyi Han
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Xue Zhang
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Menghua Cai
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Feng Tian
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Yi Xu
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Hui Chen
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Wei He
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Jianmin Zhang
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
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Nofi CP, Prince JM, Aziz M, Wang P. The Novel MFG-E8-derived Oligopeptide, MOP3, Improves Outcomes in a Preclinical Murine Model of Neonatal Sepsis. J Pediatr Surg 2024; 59:1282-1290. [PMID: 38582704 DOI: 10.1016/j.jpedsurg.2024.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 03/04/2024] [Indexed: 04/08/2024]
Abstract
INTRODUCTION Neonatal sepsis is a devastating inflammatory condition that remains a leading cause of morbidity and mortality. Milk fat globule-EGF-factor VIII (MFG-E8) is a glycoprotein that reduces inflammation, whereas extracellular cold-inducible RNA binding protein (eCIRP) worsens inflammation. This study aimed to determine the therapeutic potential of a novel MFG-E8-derived oligopeptide 3 (MOP3) designed to clear eCIRP and protect against inflammation, organ injury, and mortality in neonatal sepsis. METHODS C57BL6 mouse pups were injected intraperitoneally with cecal slurry (CS) and treated with MOP3 (20 μg/g) or vehicle. 10 h after injection, blood, lungs, and intestines were collected for analyses, and in a 7-day experiment, pups were monitored for differences in mortality. RESULTS MOP3 treatment protected septic pups from inflammation by reducing eCIRP, IL-6, TNFα, and LDH. MOP3 reduced lung and intestinal inflammation and injury as assessed by reductions in tissue mRNA levels of inflammatory markers, histopathologic injury, and apoptosis in lung and intestines. MOP3 also significantly improved 7-day overall survival for CS-septic mouse pups compared to vehicle (75% vs. 46%, respectively). CONCLUSION Deriving from MFG-E8 and designed to clear eCIRP, MOP3 protects against sepsis-induced inflammation, organ injury, and mortality in a preclinical model of neonatal sepsis, implicating it as an exciting potential new therapeutic. LEVEL OF EVIDENCE Level 1.
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Affiliation(s)
- Colleen P Nofi
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, USA; Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA.
| | - Jose M Prince
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, USA; Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA; Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Elmezzi Graduate School of Molecular Medicine, Manhasset, NY, USA; Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA; Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA
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Chen S, Li Z, Xiao Y, Zhou Z, Zhan Q, Yu L. Rutin targets AKT to inhibit ferroptosis in ventilator-induced lung injury. Phytother Res 2024; 38:3401-3416. [PMID: 38666397 DOI: 10.1002/ptr.8212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/14/2024] [Accepted: 04/02/2024] [Indexed: 07/12/2024]
Abstract
Our previous research confirmed that rutin reduced ventilator-induced lung injury (VILI) in mice. Ferroptosis has been reported to participate in the pathogenic process of VILI. We will explore whether rutin inhibits ferroptosis to alleviate VILI. A mouse model of VILI was constructed with or without rutin pretreatment to perform a multiomics analysis. Hematoxylin-eosin (HE) staining and transmission electron microscopy were used to evaluate lung injury in VILI mice. Dihydroethidium (DHE) staining and the malondialdehyde (MDA) and superoxide dismutase (SOD) levels were detected. Molecular docking was performed to determine the binding affinity between rutin and ferroptosis-related proteins. Western blot analysis, real-time PCR (RT-PCR) and immunohistochemical (IHC) staining were conducted to detect the expression levels of GPX4, XCT, ACSL4, FTH1, AKT and p-AKT in lung tissues. Microscale thermophoresis (MST) was used to evaluate the binding between rutin and AKT1. Transcriptomic and proteomic analyses showed that ferroptosis may play a key role in VILI mice. Metabolomic analysis demonstrated that rutin may affect ferroptosis via the AKT pathway. Molecular docking analysis indicated that rutin may regulate the expression of ferroptosis-related proteins. Moreover, rutin upregulated GPX4 expression and downregulated the expression of XCT, ACSL4 and FTH1 in the lung tissues. Rutin also increased the ratio of p-AKT/AKT and p-AKT expression. MST analysis showed that rutin binds to AKT1. Rutin binds to AKT to activate the AKT signaling pathway, contributing to inhibit ferroptosis, thus preventing VILI in mice. Our study elucidated a possible novel strategy of involving the use of rutin for preventing VILI.
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Affiliation(s)
- Shengsong Chen
- Department of Pulmonary and Critical Care Medicine, National Regional Center for Respiratory Medicine, Jiangxi Hospital of China-Japan Friendship Hospital, The 1st Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Zhonghao Li
- Department of Emergency, China-Japan Friendship Hospital, Beijing, China
| | - Yuhong Xiao
- Department of Rehabilitation Medicine, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Zhaobin Zhou
- Department of Pulmonary and Critical Care Medicine, National Regional Center for Respiratory Medicine, Jiangxi Hospital of China-Japan Friendship Hospital, The 1st Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Qingyuan Zhan
- Department of Pulmonary and Critical Care Medicine, National Regional Center for Respiratory Medicine, Jiangxi Hospital of China-Japan Friendship Hospital, The 1st Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Lingling Yu
- Department of Rehabilitation Medicine, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
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Wang WT, Zhang YY, Li ZR, Li JM, Deng HS, Li YY, Yang HY, Lau CC, Yao YJ, Pan HD, Liu L, Xie Y, Zhou H. Syringic acid attenuates acute lung injury by modulating macrophage polarization in LPS-induced mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155591. [PMID: 38692075 DOI: 10.1016/j.phymed.2024.155591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 03/15/2024] [Accepted: 04/05/2024] [Indexed: 05/03/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is a continuum of lung changes caused by multiple lung injuries, characterized by a syndrome of uncontrolled systemic inflammation that often leads to significant morbidity and death. Anti-inflammatory is one of its treatment methods, but there is no safe and available drug therapy. Syringic acid (SA) is a natural organic compound commonly found in a variety of plants, especially in certain woody plants and fruits. In modern pharmacological studies, SA has anti-inflammatory effects and therefore may be a potentially safe and available compound for the treatment of acute lung injury. PURPOSE This study attempts to reveal the protective mechanism of SA against ALI by affecting the polarization of macrophages and the activation of NF-κB signaling pathway. Trying to find a safer and more effective drug therapy for clinical use. METHODS We constructed the ALI model using C57BL/6 mice by intratracheal instillation of LPS (10 mg/kg). Histological analysis was performed with hematoxylin and eosin (H&E). The wet-dry ratio of the whole lung was measured to evaluate pulmonary edema. The effect of SA on macrophage M1-type was detected by flow cytometry. BCA protein quantification method was used to determine the total protein concentration in bronchoalveolar lavage fluid (BALF). The levels of Interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α in BALF were determined by the ELISA kits, and RT-qPCR was used to detect the expression levels of IL-6, IL-1β and TNF-α mRNA of lung tissue. Western blot was used to detect the expression levels of iNOS and COX-2 and the phosphorylation of p65 and IκBα in the NF-κB pathway in lung tissue. In vitro experiments were conducted with RAW267.4 cell inflammation model induced by 100 ng/ml LPS and A549 cell inflammation model induced by 10 μg/ml LPS. The effects of SA on M1-type and M2-type macrophages of RAW267.4 macrophages induced by LPS were detected by flow cytometry. The toxicity of compound SA to A549 cells was detected by MTT method which to determine the safe dose of SA. The expressions of COX-2 and the phosphorylation of p65 and IκBα protein in NF-κB pathway were detected by Western blot. RESULTS We found that the pre-treatment of SA significantly reduced the degree of lung injury, and the infiltration of neutrophils in the lung interstitium and alveolar space of the lung. The formation of transparent membrane in lung tissue and thickening of alveolar septum were significantly reduced compared with the model group, and the wet-dry ratio of the lung was also reduced. ELISA and RT-qPCR results showed that SA could significantly inhibit the production of IL-6, IL-1β, TNF-α. At the same time, SA could significantly inhibit the expression of iNOS and COX-2 proteins, and could inhibit the phosphorylation of p65 and IκBα proteins. in a dose-dependent manner. In vitro experiments, we found that flow cytometry showed that SA could significantly inhibit the polarization of macrophages from M0 type macrophages to M1-type macrophages, while SA could promote the polarization of M1-type macrophages to M2-type macrophages. The results of MTT assay showed that SA had no obvious cytotoxicity to A549 cells when the concentration was not higher than 80 μM, while LPS could promote the proliferation of A549 cells. In the study of anti-inflammatory effect, SA can significantly inhibit the expression of COX-2 and the phosphorylation of p65 and IκBα proteins in LPS-induced A549 cells. CONCLUSION SA has possessed a crucial anti-ALI role in LPS-induced mice. The mechanism was elucidated, suggesting that the inhibition of macrophage polarization to M1-type and the promotion of macrophage polarization to M2-type, as well as the inhibition of NF-κB pathway by SA may be the reasons for its anti-ALI. This finding provides important molecular evidence for the further application of SA in the clinical treatment of ALI.
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Affiliation(s)
- Wei-Ting Wang
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Yan-Yu Zhang
- Henan University of Chinese Medicine, No. 156 Jinshui East Road, Zhengzhou, Henan 450046, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Zi-Rui Li
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Juan-Min Li
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Hai-Shan Deng
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China
| | - Yuan-Yuan Li
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wailong, Taipa, Macao, China
| | - Hua-Yi Yang
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wailong, Taipa, Macao, China
| | - Chi Chou Lau
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wailong, Taipa, Macao, China
| | - Yi-Jing Yao
- Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wailong, Taipa, Macao, China
| | - Hu-Dan Pan
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Liang Liu
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China
| | - Ying Xie
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China.
| | - Hua Zhou
- International Institute for Translational Chinese Medicine, State Key Laboratory of Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, University Town Hospital, No. 55, Neihuan West Road, University Town, Panyu District, Guangzhou, Guangdong 510006, China; Chinese Medicine Guangdong Laboratory (Hengqin Laboratory), Guangdong-Macao In-Depth Cooperation Zone in Hengqin, 519000, China.
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Pei Y, Chen Z, Zhao R, An Y, Yisihaer H, Wang C, Bai Y, Liang L, Jin L, Hu Y. A Cyclic Peptide Based on Pheasant Cathelicidin Inhibits Influenza A H1N1 Virus Infection. Antibiotics (Basel) 2024; 13:606. [PMID: 39061288 PMCID: PMC11273436 DOI: 10.3390/antibiotics13070606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
Influenza viruses are the leading cause of upper respiratory tract infections, leading to several global pandemics and threats to public health. Due to the continuous mutation of influenza A viruses, there is a constant need for the development of novel antiviral therapeutics. Recently, natural antimicrobial peptides have provided an opportunity for the discovery of anti-influenza molecules. Here, we designed several peptides based on pheasant cathelicidin and tested their antiviral activities and mechanisms against the H1N1 virus. Of note, the designed peptides Pc-4 and Pc-5 were found to inhibit replication of the H1N1 virus with an IC50 = 8.14 ± 3.94 µM and 2.47 ± 1.95 µM, respectively. In addition, the cyclic peptide Pc-5 was found to induce type I interferons and the expression of interferon-induced genes. An animal study showed that the cyclic peptide Pc-5 effectively inhibited H1N1 virus infection in a mouse model. Taken together, our work reveals a strategy for designing cyclic peptides and provides novel molecules with therapeutic potential against influenza A virus infection.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Lin Jin
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China; (Y.P.); (Z.C.); (R.Z.); (Y.A.); (H.Y.); (C.W.); (Y.B.); (L.L.)
| | - Yongting Hu
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China; (Y.P.); (Z.C.); (R.Z.); (Y.A.); (H.Y.); (C.W.); (Y.B.); (L.L.)
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Li F, Qin N, Yu Y, Dong R, Li X, Gong S, Zeng Z, Huang L, Yang H. TREM-1 inhibition or ondansetron administration ameliorates NLRP3 inflammasome and pyroptosis in traumatic brain injury-induced acute lung injury. Arch Med Sci 2024; 20:984-996. [PMID: 39050170 PMCID: PMC11264077 DOI: 10.5114/aoms/174264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/17/2023] [Indexed: 07/27/2024] Open
Abstract
Introduction Recently, NLR family pyrin domain containing 3 (NLRP3) and pyroptosis have been reported to be involved in traumatic brain injury-induced acute lung injury (TBI-ALI). Studies have shown that triggering receptor expressed on myeloid cells-1 (TREM-1) may be one of the upstream molecules regulating NLRP3/pyroptosis, and 5-hydroxytryptamine type 3-receptor (5-HT3R) antagonists can inhibit NLRP3/pyroptosis. However, the role of TRME-1 in TBI-ALI, the therapeutic effect of 5-HT3R inhibition on TBI-ALI and its mechanism are still unclear. Therefore, this study aimed to evaluate the protective effect of ondansetron, a 5-HT3 inhibitor, on TBI-ALI, and to explore whether the underlying mechanism is related to the regulation of TREM-1. Material and methods A TBI-ALI rat model was constructed via lateral fluid percussion (LFP) brain injury, and either TREM-1 inhibitor (LP17) or ondansetron was administered as needed. Results TBI induced NLRP3 inflammasome, pyroptosis, and TREM-1 activation in rat lung tissues in a time-dependent manner. Inhibition of TREM-1 activity attenuated TBI-ALI; this is evident from reduced pathological scores, wet/dry ratios, and bronchoalveolar lavage fluid protein levels and alleviated NLRP3 inflammasome/pyroptosis. In addition, ondansetron reduced NLRP3 inflammasome/pyroptosis and alleviated TBI-ALI. Moreover, ondansetron reduced TREM-1 activation in macrophages and lung tissue. Conclusions Ondansetron alleviated TBI-ALI. In terms of mechanism, TREM-1 promotes TBI-ALI via the NLRP3-related pyroptosis pathway, and the protective effect of ondansetron on TBI-ALI may be related to the inhibition of TREM-1.
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Affiliation(s)
- Fen Li
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
| | - Na Qin
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
| | - Yiqin Yu
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
| | - Rui Dong
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
| | - Xiaojie Li
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
| | - Shenhai Gong
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhenhua Zeng
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China
| | - Lin Huang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China
| | - Hong Yang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- The Third Clinical College of Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, China
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Zhou Y, Wang H, Liu A, Pu Z, Ji Q, Xu J, Xu Y, Wang Y. Sivelestat improves acute lung injury by inhibiting PI3K/AKT/mTOR signaling pathway. PLoS One 2024; 19:e0302721. [PMID: 38935660 PMCID: PMC11210789 DOI: 10.1371/journal.pone.0302721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 04/10/2024] [Indexed: 06/29/2024] Open
Abstract
OBJECTIVE To investigate the therapeutic effect and mechanism of sivelestat sodium on acute lung injury (AIL). METHODS A rat model for ALI/acute respiratory distress syndrome (ALI/ARDS) was established. Pathological examination of lung tissue was conducted to assess lung injury. Blood gas in the arteries was measured using a blood analyzer. Changes in PaO2, PaO2/FiO2, and lung wet/dry (W/D) weight ratio were carefully compared. ELISA assay was conducted to estimate cell adhesion and inflammation response. Finally, real-time reverse transcription polymerase chain reaction and western blotting assay was used to determine the activation of PI3K/AKT/mTOR pathway. RESULTS ARDS in vivo model was successfully constructed by LPS injection. Compared with the sham group, PaO2 and PaO2/FiO2 were significantly lower in the vehicle group, while the lung W/D ratio, the lung injury score, NE, VCAM-1, IL-8 andTNF-αwere significantly increased. After treatment with different doses of sivelestat sodium, we found PaO2, PaO2/FiO2 were prominently increased, while the lung W/D ratio, the lung injury score, NE, VCAM-1, IL-8, TNF-α levels were decreased in the dose-dependent manner. Meanwhile, compared with the vehicle group, the expression levels of Bax, PI3K, Akt and mTOR were significantly lower, and the expression of Bcl-2 was significantly higher after injection with sivelestat sodium. CONCLUSION Sivelestat sodium has an interventional effect on ALI in sepsis by inhibiting the PI3K/AKT/mTOR signalling pathway.
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Affiliation(s)
- Yaqing Zhou
- Department of Critical Care Medicine, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Haiyan Wang
- Department of Critical Care Medicine, Hai’an Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nantong, Jiangsu Province, China
| | - Aiming Liu
- Department of Critical Care Medicine, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Zunguo Pu
- Department of Critical Care Medicine, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Qiuxia Ji
- Department of Clinical Pharmacy, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Jianhua Xu
- Department of Clinical Pharmacy, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Yuehua Xu
- Department of Clinical Pharmacy, Hai’an People’s Hospital, Hai’an County, Nantong City, Jiangsu Province, China
| | - Ying Wang
- Department of Critical Care Medicine, Nantong First People’s Hospital, Nantong City, Jiangsu Province, China
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Liu YS, Chen WL, Zeng YW, Li ZH, Zheng HL, Pan N, Zhao LY, Wang S, Chen SH, Jiang MH, Jin CC, Mi YC, Cai ZH, Fang XZ, Liu YJ, Liu L, Wang GL. Isaridin E Protects against Sepsis by Inhibiting Von Willebrand Factor-Induced Endothelial Hyperpermeability and Platelet-Endothelium Interaction. Mar Drugs 2024; 22:283. [PMID: 38921594 PMCID: PMC11204489 DOI: 10.3390/md22060283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 06/27/2024] Open
Abstract
Endothelial hyperpermeability is pivotal in sepsis-associated multi-organ dysfunction. Increased von Willebrand factor (vWF) plasma levels, stemming from activated platelets and endothelium injury during sepsis, can bind to integrin αvβ3, exacerbating endothelial permeability. Hence, targeting this pathway presents a potential therapeutic avenue for sepsis. Recently, we identified isaridin E (ISE), a marine-derived fungal cyclohexadepsipeptide, as a promising antiplatelet and antithrombotic agent with a low bleeding risk. ISE's influence on septic mortality and sepsis-induced lung injury in a mouse model of sepsis, induced by caecal ligation and puncture, is investigated in this study. ISE dose-dependently improved survival rates, mitigating lung injury, thrombocytopenia, pulmonary endothelial permeability, and vascular inflammation in the mouse model. ISE markedly curtailed vWF release from activated platelets in septic mice by suppressing vesicle-associated membrane protein 8 and soluble N-ethylmaleide-sensitive factor attachment protein 23 overexpression. Moreover, ISE inhibited healthy human platelet adhesion to cultured lipopolysaccharide (LPS)-stimulated human umbilical vein endothelial cells (HUVECs), thereby significantly decreasing vWF secretion and endothelial hyperpermeability. Using cilengitide, a selective integrin αvβ3 inhibitor, it was found that ISE can improve endothelial hyperpermeability by inhibiting vWF binding to αvβ3. Activation of the integrin αvβ3-FAK/Src pathway likely underlies vWF-induced endothelial dysfunction in sepsis. In conclusion, ISE protects against sepsis by inhibiting endothelial hyperpermeability and platelet-endothelium interactions.
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Affiliation(s)
- Yao-Sheng Liu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Wen-Liang Chen
- Scientific Research Center, the Medical Interdisciplinary Science Research Center of Western Guangdong, College of Women and Children, the Second Affiliated Hospital of Guangdong Medical University, Zhanjiang 524023, China;
| | - Yu-Wei Zeng
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Zhi-Hong Li
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Hao-Lin Zheng
- Division of Biosciences, University College London, London WC1E 6BT, UK;
| | - Ni Pan
- Department of Pharmacy, The Second Clinical College, Guangzhou Medical University, Guangzhou 510261, China;
| | - Li-Yan Zhao
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Shu Wang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Sen-Hua Chen
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (S.-H.C.); (M.-H.J.)
- Southern Marine Sciences and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Ming-Hua Jiang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (S.-H.C.); (M.-H.J.)
- Southern Marine Sciences and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Chen-Chen Jin
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Yu-Chen Mi
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Zhao-Hui Cai
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Xin-Zhe Fang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
| | - Yong-Jun Liu
- Guangdong Provincial Clinical Research Center of Critical Care Medicine, Guangzhou 510080, China
- Department of Critical Care Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (S.-H.C.); (M.-H.J.)
- Southern Marine Sciences and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Guan-Lei Wang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; (Y.-S.L.); (Y.-W.Z.); (Z.-H.L.); (L.-Y.Z.); (S.W.); (C.-C.J.); (Y.-C.M.); (Z.-H.C.); (X.-Z.F.)
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Fan SY, Zhao ZC, Liu XL, Peng YG, Zhu HM, Yan SF, Liu YJ, Xie Q, Jiang Y, Zeng SZ. Metformin Mitigates Sepsis-Induced Acute Lung Injury and Inflammation in Young Mice by Suppressing the S100A8/A9-NLRP3-IL-1β Signaling Pathway. J Inflamm Res 2024; 17:3785-3799. [PMID: 38895139 PMCID: PMC11182881 DOI: 10.2147/jir.s460413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Background Globally, the subsequent complications that accompany sepsis result in remarkable morbidity and mortality rates. The lung is among the vulnerable organs that incur the sepsis-linked inflammatory storm and frequently culminates into ARDS/ALI. The metformin-prescribed anti-diabetic drug has been revealed with anti-inflammatory effects in sepsis, but the underlying mechanisms remain unclear. This study aimed to ascertain metformin's effects and functions in a young mouse model of sepsis-induced ALI. Methods Mice were randomly divided into 4 groups: sham, sham+ Met, CLP, and CLP+ Met. CLP was established as the sepsis-induced ALI model accompanied by intraperitoneal metformin treatment. At day 7, the survival state of mice was noted, including survival rate, weight, and M-CASS. Lung histological pathology and injury scores were determined by hematoxylin-eosin staining. The pulmonary coefficient was used to evaluate pulmonary edema. Furthermore, IL-1β, CCL3, CXCL11, S100A8, S100A9 and NLRP3 expression in tissues collected from lungs were determined by qPCR, IL-1β, IL-18, TNF-α by ELISA, caspase-1, ASC, NLRP3, P65, p-P65, GSDMD-F, GSDMD-N, IL-1β and S100A8/A9 by Western blot. Results The data affirmed that metformin enhanced the survival rate, lessened lung tissue injury, and diminished the expression of inflammatory factors in young mice with sepsis induced by CLP. In contrast to sham mice, the CLP mice were affirmed to manifest ALI-linked pathologies following CLP-induced sepsis. The expressions of pro-inflammatory factors, for instance, IL-1β, IL-18, TNF-α, CXCL11, S100A8, and S100A9 are markedly enhanced by CLP, while metformin abolished this adverse effect. Western blot analyses indicated that metformin inhibited the sepsis-induced activation of GSDMD and the upregulation of S100A8/A9, NLRP3, and ASC. Conclusion Metformin could improve the survival rate, lessen lung tissue injury, and minimize the expression of inflammatory factors in young mice with sepsis induced by CLP. Metformin reduced sepsis-induced ALI via inhibiting the NF-κB signaling pathway and inhibiting pyroptosis by the S100A8/A9-NLRP3-IL-1β pathway.
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Affiliation(s)
- Shi-Yuan Fan
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
| | - Zi-Chi Zhao
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
| | - Xing-Lv Liu
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
| | - Ying-Gang Peng
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
| | - Hui-Min Zhu
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
| | - Shi-Fan Yan
- Department of Emergency, Institute of Emergency Medicine, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, 410005, People’s Republic of China
| | - Yan-Juan Liu
- Department of Emergency, Institute of Emergency Medicine, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, 410005, People’s Republic of China
| | - Qin Xie
- Department of Emergency, Institute of Emergency Medicine, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, 410005, People’s Republic of China
| | - Yu Jiang
- Department of Emergency, Institute of Emergency Medicine, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, 410005, People’s Republic of China
| | - Sai-Zhen Zeng
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People’s Hospital), Changsha, Hunan, 410005, People’s Republic of China
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Ge Q, Zhou S, Porras J, Fu P, Wang T, Du J, Li K. SARS-CoV-2 neurotropism-induced anxiety/depression-like behaviors require Microglia activation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.02.560570. [PMID: 37873397 PMCID: PMC10592887 DOI: 10.1101/2023.10.02.560570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been associated with a wide range of "long COVID" neurological symptoms. However, the mechanisms governing SARS-CoV-2 neurotropism and its effects on long-term behavioral changes remain poorly understood. Using a highly virulent mouse-adapted SARS-CoV-2 strain, denoted as SARS2-N501Y MA30 , we demonstrated that intranasal inoculation of SARS2-N501Y MA30 results in viral dissemination to multiple brain regions, including the amygdala and hippocampus. Behavioral assays indicated a marked elevation in anxiety- and depression-like behaviors post infection. A comparative analysis of RNA expression profiles disclosed alterations in the post-infected brains. Additionally, we observed dendritic spine remodeling on neurons within the amygdala after infection. Infection with SARS2-N501Y MA30 was associated with microglial activation and a subsequent increase in microglia-dependent neuronal activity in the amygdala. Pharmacological inhibition of microglial activity subsequent to viral spike inoculation mitigates microglia-dependent neuronal hyperactivity. Transcriptomic analysis of infected brains revealed the upregulation of inflammatory and cytokine-related pathways, implicating microglia-driven neuroinflammation in the pathogenesis of neuronal hyperactivity and behavioral abnormality. Overall, these data provide critical insights into the neurological consequences of SARS-CoV-2 infection and underscore microglia as a potential therapeutic target for ameliorating virus-induced neurobehavioral abnormalities.
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Kulkarni HS. Hexamerization: explaining the original sin of IgG-mediated complement activation in acute lung injury. J Clin Invest 2024; 134:e181137. [PMID: 38828725 PMCID: PMC11142731 DOI: 10.1172/jci181137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024] Open
Abstract
Although antibody-mediated lung damage is a major factor in transfusion-related acute lung injury (ALI), autoimmune lung disease (for example, coatomer subunit α [COPA] syndrome), and primary graft dysfunction following lung transplantation, the mechanism by which antigen-antibody complexes activate complement to induce lung damage remains unclear. In this issue of the JCI, Cleary and colleagues utilized several approaches to demonstrate that IgG forms hexamers with MHC class I alloantibodies. This hexamerization served as a key pathophysiological mechanism in alloimmune lung injury models and was mediated through the classical pathway of complement activation. Additionally, the authors provided avenues for exploring therapeutics for this currently hard-to-treat clinical entity that has several etiologies but a potentially focused mechanism.
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Kuhar E, Chander N, Stewart DJ, Jahandideh F, Zhang H, Kristof AS, Bastarache JA, Schmidt EP, Taljaard M, Thebaud B, Engelberts D, Fergusson DA, Lalu MM. A preclinical systematic review and meta-analysis assessing the effect of biological sex in lipopolysaccharide-induced acute lung injury. Am J Physiol Lung Cell Mol Physiol 2024; 326:L661-L671. [PMID: 38349120 DOI: 10.1152/ajplung.00336.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 04/05/2024] Open
Abstract
It is unclear what effect biological sex has on outcomes of acute lung injury (ALI). Clinical studies are confounded by their observational design. We addressed this knowledge gap with a preclinical systematic review of ALI animal studies. We searched MEDLINE and Embase for studies of intratracheal/intranasal/aerosolized lipopolysaccharide administration (the most common ALI model) that reported sex-stratified data. Screening and data extraction were conducted in duplicate. Our primary outcome was histological tissue injury and secondary outcomes included alveolar-capillary barrier alterations and inflammatory markers. We used a random-effects inverse variance meta-analysis, expressing data as standardized mean difference (SMD) with 95% confidence intervals (CIs). Risk of bias was assessed using the Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE) tool. We identified six studies involving 132 animals across 11 independent experiments. A total of 41 outcomes were extracted, with the direction of effect suggesting greater severity in males than females in 26/41 outcomes (63%). One study reported on lung histology and found that male mice exhibited greater injury than females (SMD: 1.61, 95% CI: 0.53-2.69). Meta-analysis demonstrated significantly elevated albumin levels (SMD: 2.17, 95% CI: 0.63-3.70) and total cell counts (SMD: 0.80, 95% CI: 0.27-1.33) in bronchoalveolar lavage fluid from male mice compared with female mice. Most studies had an "unclear risk of bias." Our findings suggest sex-related differences in ALI severity. However, these conclusions are drawn from a small number of animals and studies. Further research is required to address the fundamental issue of biological sex differences in LPS-induced ALI.
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Affiliation(s)
- Eva Kuhar
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Nikesh Chander
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Duncan J Stewart
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, The Ottawa Hospital and the Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Forough Jahandideh
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Haibo Zhang
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Unity Health Toronto, Toronto, Ontario, Canada
- Department of Anesthesiology and Pain Medicine, Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Arnold S Kristof
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Faculty of Medicine, Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Julie A Bastarache
- Department of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Eric P Schmidt
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Monica Taljaard
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Bernard Thebaud
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, The Ottawa Hospital and the Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Doreen Engelberts
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Dean A Fergusson
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Manoj M Lalu
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
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Mikolka P, Kosutova P, Kolomaznik M, Nemcova N, Hanusrichterova J, Curstedt T, Johansson J, Calkovska A. The Synthetic Surfactant CHF5633 Restores Lung Function and Lung Architecture in Severe Acute Respiratory Distress Syndrome in Adult Rabbits. Lung 2024; 202:299-315. [PMID: 38684519 PMCID: PMC11143048 DOI: 10.1007/s00408-024-00689-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 03/23/2024] [Indexed: 05/02/2024]
Abstract
PURPOSE Acute respiratory distress syndrome (ARDS) is a major cause of hypoxemic respiratory failure in adults. In ARDS extensive inflammation and leakage of fluid into the alveoli lead to dysregulation of pulmonary surfactant metabolism and function. Altered surfactant synthesis, secretion, and breakdown contribute to the clinical features of decreased lung compliance and alveolar collapse. Lung function in ARDS could potentially be restored with surfactant replacement therapy, and synthetic surfactants with modified peptide analogues may better withstand inactivation in ARDS alveoli than natural surfactants. METHODS This study aimed to investigate the activity in vitro and the bolus effect (200 mg phospholipids/kg) of synthetic surfactant CHF5633 with analogues of SP-B and SP-C, or natural surfactant Poractant alfa (Curosurf®, both preparations Chiesi Farmaceutici S.p.A.) in a severe ARDS model (the ratio of partial pressure arterial oxygen and fraction of inspired oxygen, P/F ratio ≤ 13.3 kPa) induced by hydrochloric acid instillation followed by injurious ventilation in adult New Zealand rabbits. The animals were ventilated for 4 h after surfactant treatment and the respiratory parameters, histological appearance of lung parenchyma and levels of inflammation, oxidative stress, surfactant dysfunction, and endothelial damage were evaluated. RESULTS Both surfactant preparations yielded comparable improvements in lung function parameters, reductions in lung injury score, pro-inflammatory cytokines levels, and lung edema formation compared to untreated controls. CONCLUSIONS This study indicates that surfactant replacement therapy with CHF5633 improves lung function and lung architecture, and attenuates inflammation in severe ARDS in adult rabbits similarly to Poractant alfa. Clinical trials have so far not yielded conclusive results, but exogenous surfactant may be a valid supportive treatment for patients with ARDS given its anti-inflammatory and lung-protective effects.
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Affiliation(s)
- Pavol Mikolka
- Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia.
| | - Petra Kosutova
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Maros Kolomaznik
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Nikolett Nemcova
- Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Juliana Hanusrichterova
- Biomedical Centre Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Tore Curstedt
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Jan Johansson
- Department of Biosciences and Nutrition, Karolinska Institutet, Neo, Huddinge, Sweden
| | - Andrea Calkovska
- Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
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Meunier É, Aubin vega M, Adam D, Privé A, Mohammad Nezhady MA, Lahaie I, Quiniou C, Chemtob S, Brochiero E. Evaluation of interleukin-1 and interleukin-6 receptor antagonists in a murine model of acute lung injury. Exp Physiol 2024; 109:966-979. [PMID: 38594909 PMCID: PMC11140168 DOI: 10.1113/ep091682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/12/2024] [Indexed: 04/11/2024]
Abstract
The acute exudative phase of acute respiratory distress syndrome (ARDS), a severe form of respiratory failure, is characterized by alveolar damage, pulmonary oedema, and an exacerbated inflammatory response. There is no effective treatment for this condition, but based on the major contribution of inflammation, anti-inflammatory strategies have been evaluated in animal models and clinical trials, with conflicting results. In COVID-19 ARDS patients, interleukin (IL)-1 and IL-6 receptor antagonists (IL-1Ra and IL-6Ra, kineret and tocilizumab, respectively) have shown some efficacy. Moreover, we have previously developed novel peptides modulating IL-1R and IL-6R activity (rytvela and HSJ633, respectively) while preserving immune vigilance and cytoprotective pathways. We aimed to assess the efficacy of these novel IL-1Ra and IL-6Ra, compared to commercially available drugs (kineret, tocilizumab) during the exudative phase (day 7) of bleomycin-induced acute lung injury (ALI) in mice. Our results first showed that none of the IL-1Ra and IL-6Ra compounds attenuated bleomycin-induced weight loss and venousP C O 2 ${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$ increase. Histological analyses and lung water content measurements also showed that these drugs did not improve lung injury scores or pulmonary oedema, after the bleomycin challenge. Finally, IL-1Ra and IL-6Ra failed to alleviate the inflammatory status of the mice, as indicated by cytokine levels and alveolar neutrophil infiltration. Altogether, these results indicate a lack of beneficial effects of IL-1R and IL-6R antagonists on key parameters of ALI in the bleomycin mouse model.
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Affiliation(s)
- Émilie Meunier
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM)MontréalQuébecCanada
- Département de MédecineUniversité de MontréalMontréalQuébecCanada
| | - Mélissa Aubin vega
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM)MontréalQuébecCanada
- Département de MédecineUniversité de MontréalMontréalQuébecCanada
| | - Damien Adam
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM)MontréalQuébecCanada
- Département de MédecineUniversité de MontréalMontréalQuébecCanada
| | - Anik Privé
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM)MontréalQuébecCanada
| | | | - Isabelle Lahaie
- Centre de recherche du Centre hospitalier Universitaire Sainte‐JustineMontréalQuébecCanada
| | - Christiane Quiniou
- Centre de recherche du Centre hospitalier Universitaire Sainte‐JustineMontréalQuébecCanada
| | - Sylvain Chemtob
- Centre de recherche du Centre hospitalier Universitaire Sainte‐JustineMontréalQuébecCanada
- Département de pédiatrieUniversité de MontréalMontréalQuébecCanada
| | - Emmanuelle Brochiero
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM)MontréalQuébecCanada
- Département de MédecineUniversité de MontréalMontréalQuébecCanada
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Gupta A, Mahajan P, Bhagyawant SS, Saxena N, Johri AK, Kumar S, Verma SK. Recombinant YopE and LcrV vaccine candidates protect mice against plague and yersiniosis. Heliyon 2024; 10:e31446. [PMID: 38826713 PMCID: PMC11141369 DOI: 10.1016/j.heliyon.2024.e31446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 05/10/2024] [Accepted: 05/15/2024] [Indexed: 06/04/2024] Open
Abstract
No licensed vaccine exists for the lethal plague and yersiniosis. Therefore, a combination of recombinant YopE and LcrV antigens of Yersinia pestis was evaluated for its vaccine potential in a mouse model. YopE and LcrV in formulation with alum imparted a robust humoral immune response, with isotyping profiles leaning towards the IgG1 and IgG2b subclasses. It was also observed that a significantly enhanced expression of IFN-γ, TNF-α, IL-6, IL-2, and IL-1β from the splenic cells of vaccinated mice, as well as YopE and LcrV-explicit IFN-γ eliciting T-cells. The cocktail of YopE + LcrV formulation conferred complete protection against 100 LD50Y. pestis infection, while individually, LcrV and YopE provided 80 % and 60 % protection, respectively. Similarly, the YopE + LcrV vaccinated animal group had significantly lower colony forming unit (CFU) counts in the spleen and blood compared to the groups administered with YopE or LcrV alone when challenged with Yersinia pseudotuberculosis and Yersinia enterocolitica. Histopathologic evidence reinforces these results, indicating the YopE + LcrV formulation provided superior protection against acute lung injury as early as day 3 post-challenge. In conclusion, the alum-adjuvanted YopE + LcrV is a promising vaccine formulation, eliciting a robust antibody response including a milieu of pro-inflammatory cytokines and T-cell effector functions that contribute to the protective immunity against Yersinia infections. YopE and LcrV, conserved across all three human-pathogenic Yersinia species, provide cross-protection. Therefore, our current vaccine (YopE + LcrV) targets all three pathogens: Y. pestis, Y. pseudotuberculosis, and Y. enterocolitica. However, the efficacy should be tested in other higher mammalian models.
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Affiliation(s)
- Ankit Gupta
- Microbiology Division, Defence Research & Developmental Establishment, Jhansi Road, Gwalior, 474002, MP, India
| | - Pooja Mahajan
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sameer S. Bhagyawant
- School of Studies in Biotechnology, Jiwaji University, Gwalior, 474011, MP, India
| | - Nandita Saxena
- Microbiology Division, Defence Research & Developmental Establishment, Jhansi Road, Gwalior, 474002, MP, India
| | - Atul Kumar Johri
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Subodh Kumar
- Microbiology Division, Defence Research & Developmental Establishment, Jhansi Road, Gwalior, 474002, MP, India
| | - Shailendra Kumar Verma
- Microbiology Division, Defence Research & Developmental Establishment, Jhansi Road, Gwalior, 474002, MP, India
- Center of Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, CA, 92037, USA
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Taenaka H, Wick KD, Sarma A, Matsumoto S, Ghale R, Fang X, Maishan M, Gotts JE, Langelier CR, Calfee CS, Matthay MA. Biological effects of corticosteroids on pneumococcal pneumonia in Mice-translational significance. Crit Care 2024; 28:185. [PMID: 38807178 PMCID: PMC11134653 DOI: 10.1186/s13054-024-04956-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 05/17/2024] [Indexed: 05/30/2024] Open
Abstract
BACKGROUND Streptococcus pneumoniae is the most common bacterial cause of community acquired pneumonia and the acute respiratory distress syndrome (ARDS). Some clinical trials have demonstrated a beneficial effect of corticosteroid therapy in community acquired pneumonia, COVID-19, and ARDS, but the mechanisms of this benefit remain unclear. The primary objective of this study was to investigate the effects of corticosteroids on the pulmonary biology of pneumococcal pneumonia in a mouse model. A secondary objective was to identify shared transcriptomic features of pneumococcal pneumonia and steroid treatment in the mouse model and clinical samples. METHODS We carried out comprehensive physiologic, biochemical, and histological analyses in mice to identify the mechanisms of lung injury in Streptococcus pneumoniae with and without adjunctive steroid therapy. We also studied lower respiratory tract gene expression from a cohort of 15 mechanically ventilated patients (10 with Streptococcus pneumoniae and 5 controls) to compare with the transcriptional studies in the mice. RESULTS In mice with pneumonia, dexamethasone in combination with ceftriaxone reduced (1) pulmonary edema formation, (2) alveolar protein permeability, (3) proinflammatory cytokine release, (4) histopathologic lung injury score, and (5) hypoxemia but did not increase bacterial burden. Transcriptomic analyses identified effects of steroid therapy in mice that were also observed in the clinical samples. CONCLUSIONS In combination with appropriate antibiotic therapy in mice, treatment of pneumococcal pneumonia with steroid therapy reduced hypoxemia, pulmonary edema, lung permeability, and histologic criteria of lung injury, and also altered inflammatory responses at the protein and gene expression level. The transcriptional studies in patients suggest that the mouse model replicates some of the features of pneumonia in patients with Streptococcus pneumoniae and steroid treatment. Overall, these studies provide evidence for the mechanisms that may explain the beneficial effects of glucocorticoid therapy in patients with community acquired pneumonia from Streptococcus Pneumoniae.
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Affiliation(s)
- Hiroki Taenaka
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA.
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA.
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
| | - Katherine D Wick
- Division of Hospital Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Aartik Sarma
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
| | - Shotaro Matsumoto
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
- Department of Intensive Care Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Rajani Ghale
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
| | - Xiaohui Fang
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Mazharul Maishan
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Jeffrey E Gotts
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Charles R Langelier
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Chan Zuckerberg Biohub, San Francisco, USA
| | - Carolyn S Calfee
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Michael A Matthay
- Department of Medicine, University of California, 513 Parnassus Avenue, HSE RM-760, San Francisco, CA, 94143, USA
- Department of Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA, USA
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Li Z, Liu Z, Guo Y, Gao S, Tang Y, Li T, Xuan H. Propolis Alleviates Acute Lung Injury Induced by Heat-Inactivated Methicillin-Resistant Staphylococcus aureus via Regulating Inflammatory Mediators, Gut Microbiota and Serum Metabolites. Nutrients 2024; 16:1598. [PMID: 38892531 PMCID: PMC11175110 DOI: 10.3390/nu16111598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
Propolis has potential anti-inflammatory properties, but little is known about its efficacy against inflammatory reactions caused by drug-resistant bacteria, and the difference in efficacy between propolis and tree gum is also unclear. Here, an in vivo study was performed to study the effects of ethanol extract from poplar propolis (EEP) and poplar tree gum (EEG) against heat-inactivated methicillin-resistant Staphylococcus aureus (MRSA)-induced acute lung injury (ALI) in mice. Pre-treatment with EEP and EEG (100 mg/kg, p.o.) resulted in significant protective effects on ALI in mice, and EEP exerted stronger activity to alleviate lung tissue lesions and ALI scores compared with that of EEG. Furthermore, EEP significantly suppressed the levels of pro-inflammatory mediators in the lung, including TNF-α, IL-1β, IL-6, and IFN-γ. Gut microbiota analysis revealed that both EEP and EEG could modulate the composition of the gut microbiota, enhance the abundance of beneficial microbiota and reduce the harmful ones, and partly restore the levels of short-chain fatty acids. EEP could modulate more serum metabolites and showed a more robust correlation between serum metabolites and gut microbiota. Overall, these results support the anti-inflammatory effects of propolis in the treatment of ALI, and the necessity of the quality control of propolis.
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Affiliation(s)
| | | | | | | | | | | | - Hongzhuan Xuan
- School of Life Science, Liaocheng University, Liaocheng 252059, China; (Z.L.); (Z.L.); (Y.G.); (S.G.); (Y.T.); (T.L.)
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Zhou L, Lin Y, Zhou T, Xue Y, Bellusci S, Shen M, Chen C, Chen C. Evidence that a Novel Chalcone Derivative, Compound 27, Acts on the Epithelium Via the PI3K/AKT/Nrf2-Keap1 Signaling Pathway, to Mitigate LPS-Induced Acute Lung Injury in Mice. Inflammation 2024:10.1007/s10753-024-02051-0. [PMID: 38789816 DOI: 10.1007/s10753-024-02051-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/17/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024]
Abstract
Acute lung injury (ALI) is a highly heterogeneous clinical syndrome and an important cause of mortality in critically ill patients, with limited treatment options currently available. Chalcone, an essential secondary metabolite found in edible or medicinal plants, exhibits good antioxidant activity and simple structure for easy synthesis. In our study, we synthesized a novel chalcone derivative, compound 27 (C27). We hypothesized that C27 could be a potential treatment for acute respiratory distress syndrome (ARDS). Therefore, the protective effects of C27 on lung epithelial cells during ALI and the underlying molecular mechanisms were investigated. In vivo, Intratracheal instillation of LPS (10 mg/kg) was used to induce acute lung injury in mice. In vitro, the bronchial epithelial cell line (Beas-2b) was treated with 30 μM tert-butyl hydroperoxide (t-BHP) to simulate oxidative stress. Our findings demonstrate that pretreatment with C27 reduces LPS-induced oxidative destruction and cellular apoptosis in lung tissues of mice. Furthermore, it significantly attenuates t-BHP-induced cellular reactive oxygen species (ROS) generation, mitochondrial damage, and apoptosis in vitro. Mechanistically, the signaling pathway involving Nrf2-Keap1 and the downstream antioxidative proteins were activated by C27 in vivo. Additionally, PI3K inhibitor LY294002 and Nrf2 inhibitor ML385 abolished the effect of C27 in vitro, indicating that the protective effect of C27 is mediated via the PI3K/AKT/Nrf2-Keap1 pathway. Our study provides evidence that C27 protects against LPS-induced ALI by mitigating oxidative stress via activation of the PI3K/AKT/Nrf2-Keap1 signaling pathway. Therefore, we hypothesize that C27 represents a viable alternative for ALI therapy.
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Affiliation(s)
- Liqin Zhou
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Yuting Lin
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Tengfei Zhou
- Department of Physiology, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, China
| | - Yincong Xue
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Saverio Bellusci
- Department of Internal Medicine, German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center (UGMLC), Cardio-Pulmonary Institute (CPI), Member of the, Justus-Liebig University Giessen , 35392, Giessen, Germany
| | - Mengya Shen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chengshui Chen
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
- Department of Pulmonary and Critical Care Medicine, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
| | - Chaolei Chen
- Zhejiang Provincial Key Laboratory of Interventional Pulmonology, Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
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Win KHN, Kushida Y, Yamana K, Iwatani S, Yoshida M, Nino N, Mon CY, Ohsaki H, Kamoshida S, Fujioka K, Dezawa M, Nishimura N. Human Muse cells isolated from preterm- and term-umbilical cord delivered therapeutic effects in rat bleomycin-induced lung injury model without immunosuppressant. Stem Cell Res Ther 2024; 15:147. [PMID: 38773627 PMCID: PMC11110192 DOI: 10.1186/s13287-024-03763-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/15/2024] [Indexed: 05/24/2024] Open
Abstract
BACKGROUND Bleomycin (BLM)-induced lung injury is characterized by mixed histopathologic changes with inflammation and fibrosis, such as observed in human patients with bronchopulmonary dysplasia, idiopathic pulmonary fibrosis, and chronic obstructive pulmonary disease. Although no curative therapies for these lung diseases exist, stem cell therapy has emerged as a potential therapeutic option. Multilineage-differentiating stress-enduring (Muse) cells are endogenous pluripotent- and macrophage-like stem cells distributed in various adult and fetal tissues as stage-specific embryonic antigen-3-positive cells. They selectively home to damaged tissue by sensing sphingosine-1-phosphate and replace the damaged/apoptotic cells by in vivo differentiation. Clinical trials for some human diseases suggest the safety and therapeutic efficacy of intravenously injected human leukocyte antigen-mismatched allogenic Muse cells from adult bone marrow (BM) without immunosuppressant. Here, we evaluated the therapeutic effects of human Muse cells from preterm and term umbilical cord (UC), and adult BM in a rat BLM-induced lung injury model. METHODS Rats were endotracheally administered BLM to induce lung injury on day 0. On day 3, human preterm UC-Muse, term UC-Muse, or adult BM-Muse cells were administered intravenously without immunosuppressants, and rats were subjected to histopathologic analysis on day 21. Body weight, serum surfactant protein D (SP-D) levels, and oxygen saturation (SpO2) were monitored. Histopathologic lung injury scoring by the Ashcroft and modified American Thoracic Society document scales, quantitative characterization of engrafted Muse cells, RNA sequencing analysis, and in vitro migration assay of infused Muse cells were performed. RESULTS Rats administered preterm- and term-UC-Muse cells exhibited a significantly better recovery based on weight loss, serum SP-D levels, SpO2, and histopathologic lung injury scores, and a significantly higher rate of both Muse cell homing to the lung and alveolar marker expression (podoplanin and prosurfactant protein-C) than rats administered BM-Muse cells. Rats receiving preterm-UC-Muse cells showed statistically superior results to those receiving term-UC-Muse cells in many of the measures. These findings are thought to be due to higher expression of genes related to cell migration, lung differentiation, and cell adhesion. CONCLUSION Preterm UC-Muse cells deliver more efficient therapeutic effects than term UC- and BM-Muse cells for treating BLM-induced lung injury in a rat model.
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Affiliation(s)
- Kaung Htet Nay Win
- Department of Public Health, Kobe University Graduate School of Health Science, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Yoshihiro Kushida
- Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Keiji Yamana
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Sota Iwatani
- Department of Neonatology, Kobe Children's Hospital, Kobe, Hyogo, Japan
| | - Makiko Yoshida
- Department of Pathology, Kobe Children's Hospital, Kobe, Hyogo, Japan
| | - Nanako Nino
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Cho Yee Mon
- Department of Public Health, Kobe University Graduate School of Health Science, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Hiroyuki Ohsaki
- Department of Medical Biophysics, Kobe University Graduate School of Health Science, Kobe, Hyogo, Japan
| | - Shingo Kamoshida
- Department of Medical Biophysics, Kobe University Graduate School of Health Science, Kobe, Hyogo, Japan
| | - Kazumichi Fujioka
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Mari Dezawa
- Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan.
| | - Noriyuki Nishimura
- Department of Public Health, Kobe University Graduate School of Health Science, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.
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Seybold B, Deutsch AM, Deutsch BL, Simeliunas E, Weigand MA, Fiedler-Kalenka MO, Kalenka A. Differential Effects of Intra-Abdominal Hypertension and ARDS on Respiratory Mechanics in a Porcine Model. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:843. [PMID: 38929460 PMCID: PMC11205316 DOI: 10.3390/medicina60060843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 06/28/2024]
Abstract
Background and Objectives: Intra-abdominal hypertension (IAH) and acute respiratory distress syndrome (ARDS) are common concerns in intensive care unit patients with acute respiratory failure (ARF). Although both conditions lead to impairment of global respiratory parameters, their underlying mechanisms differ substantially. Therefore, a separate assessment of the different respiratory compartments should reveal differences in respiratory mechanics. Materials and Methods: We prospectively investigated alterations in lung and chest wall mechanics in 18 mechanically ventilated pigs exposed to varying levels of intra-abdominal pressures (IAP) and ARDS. The animals were divided into three groups: group A (IAP 10 mmHg, no ARDS), B (IAP 20 mmHg, no ARDS), and C (IAP 10 mmHg, with ARDS). Following induction of IAP (by inflating an intra-abdominal balloon) and ARDS (by saline lung lavage and injurious ventilation), respiratory mechanics were monitored for six hours. Statistical analysis was performed using one-way ANOVA to compare the alterations within each group. Results: After six hours of ventilation, end-expiratory lung volume (EELV) decreased across all groups, while airway and thoracic pressures increased. Significant differences were noted between group (B) and (C) regarding alterations in transpulmonary pressure (TPP) (2.7 ± 0.6 vs. 11.3 ± 2.1 cmH2O, p < 0.001), elastance of the lung (EL) (8.9 ± 1.9 vs. 29.9 ± 5.9 cmH2O/mL, p = 0.003), and elastance of the chest wall (ECW) (32.8 ± 3.2 vs. 4.4 ± 1.8 cmH2O/mL, p < 0.001). However, global respiratory parameters such as EELV/kg bodyweight (-6.1 ± 1.3 vs. -11.0 ± 2.5 mL/kg), driving pressure (12.5 ± 0.9 vs. 13.2 ± 2.3 cmH2O), and compliance of the respiratory system (-21.7 ± 2.8 vs. -19.5 ± 3.4 mL/cmH2O) did not show significant differences among the groups. Conclusions: Separate measurements of lung and chest wall mechanics in pigs with IAH or ARDS reveals significant differences in TPP, EL, and ECW, whereas global respiratory parameters do not differ significantly. Therefore, assessing the compartments of the respiratory system separately could aid in identifying the underlying cause of ARF.
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Affiliation(s)
- Benjamin Seybold
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
| | - Anna M. Deutsch
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, Vivantes Klinikum im Friedrichshain, 10249 Berlin, Germany
| | - Barbara Luise Deutsch
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- Department of Anesthesiology, Intensive Care and Emergency Medicine, Asklepios Klinik Wandsbek, 22043 Hamburg, Germany
| | - Emilis Simeliunas
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- Department of Anesthesiology and Intensive Care Medicine, Bürgerspital Solothurn, 4500 Solothurn, Switzerland
| | - Markus A. Weigand
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC), 69120 Heidelberg, Germany
| | - Mascha O. Fiedler-Kalenka
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC), 69120 Heidelberg, Germany
| | - Armin Kalenka
- Department of Anesthesiology, Medical Faculty, Heidelberg University Hospital, University Heidelberg, 69120 Heidelberg, Germany; (A.M.D.); (B.L.D.); (E.S.); (M.A.W.); (M.O.F.-K.); (A.K.)
- Hospital Bergstrasse, 64646 Heppenheim, Germany
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Memisoglu A, Hinton M, Elsayed Y, Graham R, Dakshinamurti S. Assessment of Autoregulation of the Cerebral Circulation during Acute Lung Injury in a Neonatal Porcine Model. CHILDREN (BASEL, SWITZERLAND) 2024; 11:611. [PMID: 38790606 PMCID: PMC11119854 DOI: 10.3390/children11050611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/30/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
In neonates with acute lung injury (ALI), targeting lower oxygenation saturations is suggested to limit oxygen toxicity while maintaining vital organ function. Although thresholds for cerebral autoregulation are studied for the management of premature infants, the impact of hypoxia on hemodynamics, tissue oxygen consumption and extraction is not well understood in term infants with ALI. We examined hemodynamics, cerebral autoregulation and fractional oxygen extraction, as measured by near-infrared spectroscopy (NIRS) and blood gases, in a neonatal porcine oleic acid injury model of moderate ALI. We hypothesized that in ALI animals, cerebral oxygen extraction would be increased to a greater degree than kidney or gut oxygen extraction as indicative of the brain's adaptive efforts to increase cerebral oxygen extraction at the expense of splanchnic end organs. Fifteen anesthetized, ventilated 5-day-old neonatal piglets were divided into moderate lung injury by treatment with oleic acid or control (sham injection). The degree of lung injury was quantified at baseline and after establishment of ALI by blood gases, ventilation parameters and calculated oxygenation deficit, hemodynamic indices by echocardiography and lung injury score by ultrasound. PaCO2 was maintained constant during ventilation. Cerebral, renal and gut oxygenation was determined by NIRS during stepwise decreases in inspired oxygen from 50% to 21%, correlated with PaO2 and PvO2; changes in fractional oxygen extraction (ΔFOE) were calculated from NIRS and from regional blood gas samples. The proportion of cerebral autoregulation impairment attributable to blood pressure, and to hypoxemia, was calculated from autoregulation nomograms. ALI manifested as hypoxemia with increasing intrapulmonary shunt fraction, decreased lung compliance and increased resistance, and marked increase in lung ultrasound score. Brain, gut and renal NIRS, obtained from probes placed over the anterior skull, central abdomen and flank, respectively, correlated with concurrent SVC (brain) or IVC (gut, renal) PvO2 and SvO2. Cerebral autoregulation was impaired after ALI as a function of blood pressure at all FiO2 steps, but predominantly by hypoxemia at FiO2 < 40%. Cerebral ΔFOE was higher in ALI animals at all FiO2 steps. We conclude that in an animal model of neonatal ALI, cerebrovascular blood flow regulation is primarily dependent on oxygenation. There is not a defined oxygenation threshold below which cerebral autoregulation is impaired in ALI. Cerebral oxygen extraction is enhanced in ALI, reflecting compensation for exhausted cerebral autoregulation due to the degree of hypoxemia and/or hypotension, thereby protecting against tissue hypoxia.
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Affiliation(s)
- Asli Memisoglu
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; (A.M.); (M.H.)
| | - Martha Hinton
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; (A.M.); (M.H.)
- Department of Physiology, University of Manitoba, 745 Bannatyne Ave., Winnipeg, MB R3E 0J9, Canada
| | - Yasser Elsayed
- Section of Neonatology, Department of Pediatrics, Women’s Hospital, Health Sciences Centre, 665 William Ave., Winnipeg, MB R3E 0L8, Canada;
| | - Ruth Graham
- Departments of Anesthesiology, Perioperative and Pain Medicine, Health Sciences Centre, 671 William Ave., Winnipeg, MB R3E 0Z3, Canada;
| | - Shyamala Dakshinamurti
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; (A.M.); (M.H.)
- Department of Physiology, University of Manitoba, 745 Bannatyne Ave., Winnipeg, MB R3E 0J9, Canada
- Section of Neonatology, Department of Pediatrics, Women’s Hospital, Health Sciences Centre, 665 William Ave., Winnipeg, MB R3E 0L8, Canada;
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Zheng X, Xu Z, Xu L, Wang L, Qin S, Ying L, Dong S, Tang L. Angiotensin II Type 2 Receptor Inhibits M1 Polarization and Apoptosis of Alveolar Macrophage and Protects Against Mechanical Ventilation-Induced Lung Injury. Inflammation 2024:10.1007/s10753-024-02037-y. [PMID: 38767784 DOI: 10.1007/s10753-024-02037-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/03/2024] [Accepted: 04/24/2024] [Indexed: 05/22/2024]
Abstract
Angiotensin II (Ang II) is associated with macrophage polarization and apoptosis, but the role of the angiotensin type 2 receptor (AT2R) in these processes remains controversial. However, the effect of AT2Rs on alveolar macrophages and mechanical ventilation-induced lung injury has not been determined. Mechanical ventilation-induced lung injury in Sprague‒Dawley (SD) rats and LPS-stimulated rat alveolar macrophages (NR8383) were used to determine the effects of AT2Rs, selective AT2R agonists and selective AT1Rs or AT2R antagonists. Macrophage polarization, apoptosis, and related signaling pathways were assessed via western blotting, QPCR and flow cytometry. AT2R expression was decreased in LPS-stimulated rat alveolar macrophages (NR8383). Administration of the AT2R agonist CGP-42112 was associated with an increase in AT2R expression and M2 polarization, but no effect was observed upon administration of the AT2R antagonist PD123319 or the AT1R antagonist valsartan. In mechanical ventilation-induced lung injury in Sprague‒Dawley (SD) rats, the administration of the AT2R agonist C21 was associated with attenuation of the pathological damage score, lung wet/dry weight, cell count and protein content in BALF. C21 can significantly reduce proinflammatory factor TNF-α, IL-1β levels, increase anti-inflammatory factor IL-4, IL-10 levels in BALF, compared with the model group (p < 0.01). Similarly, compared with those at the same time points, the M1/M2 ratios in alveolar macrophages and apoptosis in peritoneal macrophages at 4 h, 6 h and 8 h in the mechanical ventilation models were lower after C21 administration. These findings indicated that the expression of AT2Rs in alveolar macrophages mediates M1 macrophage polarization and apoptosis and that AT2Rs play a protective role in mediating mechanical ventilation-induced lung injury.
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Affiliation(s)
- Xuyang Zheng
- Department of Pediatrics, School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, People's Republic of China.
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, 310000, Zhejiang, People's Republic of China.
| | - Zhiguang Xu
- Department of Pediatrics, School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Lihui Xu
- Department of Clinical Laboratory, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Lingqiao Wang
- Department of Pediatrics, School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Siyun Qin
- Department of Pediatrics, School of Medicine, Zhejiang University, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Liu Ying
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - Shuangyong Dong
- Department of Emergency, Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, 310000, Zhejiang, People's Republic of China.
| | - Lanfang Tang
- Department of pulmonology, Affiliated Children's Hospital, School of medicine, Zhejiang University, Hangzhou, 310003, Zhejiang, People's Republic of China.
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