1
|
Jung SB, Choi G, Kim HJ, Moon KS, Lee G, Na KH, Kwon YM, Moon J, Shin MY, Yu JY, Baek YB, Park JG, Park SI. A Noble Extract of Pseudomonas sp. M20A4R8 Efficiently Controlling the Influenza Virus-Induced Cell Death. Microorganisms 2024; 12:677. [PMID: 38674621 PMCID: PMC11051866 DOI: 10.3390/microorganisms12040677] [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: 03/06/2024] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Epidemic diseases that arise from infectious RNA viruses, particularly influenza viruses, pose a constant threat to the global economy and public health. Viral evolution has undermined the efficacy of acquired immunity from vaccines and the antiviral effects of FDA-approved drugs. As such, there is an urgent need to develop new antiviral lead agents. Natural compounds, owing to their historical validation of application and safety, have become a promising solution. In this light, a novel marine bacterium, Pseudomonas sp. M20A4R8, has been found to exhibit significant antiviral activity [half maximal inhibitory concentration (IC50) = 1.3 µg/mL, selectivity index (SI) = 919.4] against influenza virus A/Puerto Rico/8/34, surpassing the activity of chloroquine. The antiviral response via M20A4R8 extract was induced during post-entry stages of the influenza virus, indicating suitability for post-application after the establishment of viral infection. Furthermore, post-treatment with M20A4R8 extract protected the host from virus-induced apoptosis, suggesting its potential use in acute respiratory disease complexes resulting from immune effectors' overstimulation and autophagy-mediated self-apoptosis. The extract demonstrated an outstanding therapeutic index against influenza virus A/Wisconsin/15/2009 (IC50 = 8.1 µg/mL, SI = 146.2) and B/Florida/78/2015 Victoria lineage (IC50 = 3.5 µg/mL, SI = 343.8), indicating a broad anti-influenza virus activity with guaranteed safety and effectiveness. This study provides a new perspective on mechanisms for preventing a broad spectrum of viral infections through antiviral agents from novel and natural origins. Future studies on a single or combined compound from the extract hold promise, encouraging its use in preclinical challenge tests with various influenza virus strains.
Collapse
Affiliation(s)
- Su-Bin Jung
- Department of Veterinary Pathology, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea; (S.-B.J.); (K.-S.M.); (G.L.); (K.-H.N.)
| | - Grace Choi
- Department of Biological Application and Technology, National Marine Biodiversity Institute of Korea, Seocheon 33662, Republic of Korea; (G.C.); (Y.M.K.)
| | - Hyo-Jin Kim
- Department of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Republic of Korea; (H.-J.K.); (Y.-B.B.)
| | - Kyeong-Seo Moon
- Department of Veterinary Pathology, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea; (S.-B.J.); (K.-S.M.); (G.L.); (K.-H.N.)
| | - Gun Lee
- Department of Veterinary Pathology, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea; (S.-B.J.); (K.-S.M.); (G.L.); (K.-H.N.)
| | - Kyeong-Hak Na
- Department of Veterinary Pathology, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea; (S.-B.J.); (K.-S.M.); (G.L.); (K.-H.N.)
| | - Yong Min Kwon
- Department of Biological Application and Technology, National Marine Biodiversity Institute of Korea, Seocheon 33662, Republic of Korea; (G.C.); (Y.M.K.)
| | - Jimin Moon
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea;
| | - Mi Yeong Shin
- Department of Health Research, Jeollanam-do Institute of Health and Environment, Muan 58568, Republic of Korea; (M.Y.S.); (J.-Y.Y.)
| | - Jae-Yeong Yu
- Department of Health Research, Jeollanam-do Institute of Health and Environment, Muan 58568, Republic of Korea; (M.Y.S.); (J.-Y.Y.)
| | - Yeong-Bin Baek
- Department of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Republic of Korea; (H.-J.K.); (Y.-B.B.)
| | - Jun-Gyu Park
- Department of Veterinary Zoonotic Diseases, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sang-Ik Park
- Department of Veterinary Pathology, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea; (S.-B.J.); (K.-S.M.); (G.L.); (K.-H.N.)
| |
Collapse
|
2
|
Tang N, Yang Y, Xie Y, Yang G, Wang Q, Li C, Liu Z, Huang JA. CD274 (PD-L1) negatively regulates M1 macrophage polarization in ALI/ARDS. Front Immunol 2024; 15:1344805. [PMID: 38440722 PMCID: PMC10909908 DOI: 10.3389/fimmu.2024.1344805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 02/05/2024] [Indexed: 03/06/2024] Open
Abstract
Background Acute lung injury (ALI)/severe acute respiratory distress syndrome (ARDS) is a serious clinical syndrome characterized by a high mortality rate. The pathophysiological mechanisms underlying ALI/ARDS remain incompletely understood. Considering the crucial role of immune infiltration and macrophage polarization in the pathogenesis of ALI/ARDS, this study aims to identify key genes associated with both ALI/ARDS and M1 macrophage polarization, employing a combination of bioinformatics and experimental approaches. The findings could potentially reveal novel biomarkers for the diagnosis and management of ALI/ARDS. Methods Gene expression profiles relevant to ALI were retrieved from the GEO database to identify co-upregulated differentially expressed genes (DEGs). GO and KEGG analyses facilitated functional annotation and pathway elucidation. PPI networks were constructed to identify hub genes, and differences in immune cell infiltration were subsequently examined. The expression of hub genes in M1 versus M2 macrophages was evaluated using macrophage polarization datasets. The diagnostic utility of CD274 (PD-L1) for ARDS was assessed by receiver operating characteristic (ROC) analysis in a validation dataset. Experimental confirmation was conducted using two LPS-induced M1 macrophage models and an ALI mouse model. The role of CD274 (PD-L1) in M1 macrophage polarization and associated proinflammatory cytokine production was further investigated by siRNA-mediated silencing. Results A total of 99 co-upregulated DEGs were identified in two ALI-linked datasets. Enrichment analysis revealed that these DEGs were mainly involved in immune-inflammatory pathways. The following top 10 hub genes were identified from the PPI network: IL-6, IL-1β, CXCL10, CD274, CCL2, TLR2, CXCL1, CCL3, IFIT1, and IFIT3. Immune infiltration analysis revealed a significantly increased abundance of M1 and M2 macrophages in lung tissue from the ALI group compared to the control group. Subsequent analysis confirmed that CD274 (PD-L1), a key immunological checkpoint molecule, was highly expressed within M1 macrophages. ROC analysis validated CD274 (PD-L1) as a promising biomarker for the diagnosis of ARDS. Both in vitro and in vivo experiments supported the bioinformatics analysis and confirmed that the JAK-STAT3 pathway promotes CD274 (PD-L1) expression on M1 macrophages. Importantly, knockdown of CD274 (PD-L1) expression potentiated M1 macrophage polarization and enhanced proinflammatory cytokines production. Conclusion This study demonstrates a significant correlation between CD274 (PD-L1) and M1 macrophages in ALI/ARDS. CD274 (PD-L1) functions as a negative regulator of M1 polarization and the secretion of proinflammatory cytokines in macrophages. These findings suggest potential new targets for the diagnosis and treatment of ALI/ARDS.
Collapse
Affiliation(s)
- Nana Tang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Medical Intensive Care Unit, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yang Yang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| | - Yifei Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| | - Guohui Yang
- Medical Intensive Care Unit, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Qin Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| | - Chang Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| | - Zeyi Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| | - Jian-an Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, Suzhou, China
| |
Collapse
|
3
|
Wen X, Cheng M, Song Z, Hu J, Liang X, Lang W, Yang M, Zhou R, Hao Y. Molecular mechanism of honeysuckle + forsythia in treatment of acute lung injury based on network pharmacology. Biomed Rep 2024; 20:32. [PMID: 38273899 PMCID: PMC10809323 DOI: 10.3892/br.2024.1720] [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: 12/30/2022] [Accepted: 08/08/2023] [Indexed: 01/27/2024] Open
Abstract
The pathogenesis of acute lung injury (ALI) is complex and it is a common critical illness in clinical practice, seriously threatening the lives of critically ill patients, for which no specific molecular marker exists and there is a lack of effective methods for the treatment of ALI. The present study aimed to investigate the mechanism of action of honeysuckle and forsythia in treatment of acute lung injury (ALI) based on network pharmacology and in vitro modeling. The active ingredients and targets of honeysuckle and forsythia were predicted using traditional Chinese medicine systems pharmacology, PubChem and Swiss Target Prediction databases, and the Cytoscape 3.7.2 software was used to construct a drug-component-potential target network. The potential targets were imported into the Search tool for recurring instances of neighboring genes) database to obtain protein-protein interactions and subjected to Gene Ontology and Kyoto Encyclopedia of Genes and Targets analysis using Database for Annotation, Visualization, and Integrated Discovery. AutoDock Vina 1.1.2 software was used for docking between key active ingredients and the target proteins to analyze the binding ability of the active ingredients to the primary targets in honeysuckle and forsythia. A total of 64 male BALB/c mice were randomly divided into control, model, positive drug (Lianhua-Qingwen capsule), honeysuckle, forsythia, honeysuckle + forsythia high-, medium- and low-dose groups. Lipopolysaccharide (LPS) was used to induced an ALI model. The lung tissues of the mice were stained with hematoxylin-eosin and the serum levels of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were measured 4 h after the LPS administration. Reverse transcription-quantitative PCR and western blotting were used to detect NF-κB mRNA and protein expression, respectively. Active ingredients of honeysuckle and forsythia acted on 265 common targets in ALI, which regulated NF-κB, tumor necrosis factor-α (TNF-α) and PI3K-AKT signaling pathway, HIF-1 signalling pathway to slow the inflammatory response in treatment of ALI. In the positive drug group, honeysuckle, forsythia group, honeysuckle + forsythia high-, medium- and low-dose groups, lung tissue damage were significantly decrease compared with the model group, and inflammatory cell infiltration was reduced. Compared with the model group, honeysuckle + forsythia groups experienced decreased damage caused by the LPS and inflammation in the lung tissues and significantly decreased TNF-α and NF-κB and MDA concentration and significantly increased the SOD and GSH-Px activities. The mechanism of the effect of honeysuckle and forsythia on ALI may be mediated by inhibition of TNF-α and NF-κB expression and the activation of antioxidant mechanisms to decrease production of pro-inflammatory cytokines in lung tissue, thus treating ALI.
Collapse
Affiliation(s)
- Xin Wen
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
| | - Min Cheng
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
- Shangluo University, College of Biomedical and Food Engineering, Shangluo, Shaanxi 726000, P.R. China
| | - Zhongxing Song
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
| | - Jinhang Hu
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
| | - Xuhu Liang
- Shangluo University, College of Biomedical and Food Engineering, Shangluo, Shaanxi 726000, P.R. China
| | - Wuying Lang
- Shangluo University, College of Biomedical and Food Engineering, Shangluo, Shaanxi 726000, P.R. China
| | - Mengqi Yang
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
| | - Ruina Zhou
- Shaanxi University of Chinese Medicine, Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi and Education Ministry, State Key Laboratory of Research and Development of Characteristic Qin Medicine Resources (Cultivation), Xianyang, Shaanxi 712046, P.R. China
| | - Yunjing Hao
- Northwest University, College of Life Sciences, Xian, Shaanxi 710075, P.R. China
| |
Collapse
|
4
|
Liu T, Jin Q, Yang L, Mao H, Ma F, Wang Y, Li P, Zhan Y. Regulation of autophagy by natural polyphenols in the treatment of diabetic kidney disease: therapeutic potential and mechanism. Front Endocrinol (Lausanne) 2023; 14:1142276. [PMID: 37635982 PMCID: PMC10448531 DOI: 10.3389/fendo.2023.1142276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Diabetic kidney disease (DKD) is a major microvascular complication of diabetes and a leading cause of end-stage renal disease worldwide. Autophagy plays an important role in maintaining cellular homeostasis in renal physiology. In DKD, the accumulation of advanced glycation end products induces decreased renal autophagy-related protein expression and transcription factor EB (TFEB) nuclear transfer, leading to impaired autophagy and lysosomal function and blockage of autophagic flux. This accelerates renal resident cell injury and apoptosis, mediates macrophage infiltration and phenotypic changes, ultimately leading to aggravated proteinuria and fibrosis in DKD. Natural polyphenols show promise in treating DKD by regulating autophagy and promoting nuclear transfer of TFEB and lysosomal repair. This review summarizes the characteristics of autophagy in DKD, and the potential application and mechanisms of some known natural polyphenols as autophagy regulators in DKD, with the goal of contributing to a deeper understanding of natural polyphenol mechanisms in the treatment of DKD and promoting the development of their applications. Finally, we point out the limitations of polyphenols in current DKD research and provide an outlook for their future research.
Collapse
Affiliation(s)
- Tongtong Liu
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qi Jin
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liping Yang
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Huimin Mao
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fang Ma
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuyang Wang
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ping Li
- China-Japan Friendship Hospital, Institute of Medical Science, Beijing, China
| | - Yongli Zhan
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
5
|
Chen LS, Zheng DS. Safflor Yellow A Protects Beas-2B Cells Against LPS-Induced Injury via Activating Nrf2. REVISTA BRASILEIRA DE FARMACOGNOSIA : ORGAO OFICIAL DA SOCIEDADE BRASILEIRA DE FARMACOGNOSIA 2023; 33:1-10. [PMID: 37363713 PMCID: PMC10234683 DOI: 10.1007/s43450-023-00409-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/12/2023] [Indexed: 06/28/2023]
Abstract
Acute lung injury and its severe form acute respiratory distress syndrome are lethal lung diseases. So far, effective therapy for the diseases is deficient and the prognosis is poor. Recently, it was found activating nuclear factor erythroid 2-related factor 2 could attenuate the injury including inflammation, oxidative stress, and apoptosis in those diseases. To discover novel therapy, we have evaluated safflor yellow A and explored the underlying mechanisms using Beas-2B cells injured by lipopolysaccharide. As a result, safflor yellow A could improve the viability of Beas-2B cells treated with lipopolysaccharide. Further investigations have revealed safflor yellow A suppressed oxidative stress induced by lipopolysaccharide via reducing reactive oxygen species and malondialdehyde, and elevating superoxide dismutase, catalase, and glutathione peroxidase. Meanwhile, the inflammation resulting from lipopolysaccharide was ameliorated through decreasing the pro-inflammatory cytokines including tumor necrosis factor-α, interleukin-1β, and interleukin-6. It was also found nuclear factor κB was inactivated by safflor yellow A. In addition, safflor yellow A downregulated cysteinyl aspartate specific proteinase-3 and Bcl-2-associated X protein and upregulated B-cell lymphoma-2 to inhibited apoptosis of Beas-2B cells induced by lipopolysaccharide. The activation of nuclear factor erythroid 2-related factor 2 was observed in Beas-2B cells, which was associated with the protective effects of safflor yellow A. And molecular docking elucidated safflor yellow A interacted with Kelch-like ECH-associated protein 1 to activate nuclear factor erythroid 2-related factor 2. These results can provide evidences for the discovery of novel therapy for further evaluation of safflor yellow A in the treatment of acute lung injury and acute respiratory distress syndrome. Graphical Abstract
Collapse
Affiliation(s)
- Liang-Shu Chen
- Ward of Healthcare Branch II, The First Affiliated Hospital of Xiamen University, Xiamen, 361003 Fujian China
| | - Dong-Shu Zheng
- The Third Clinical Medical College, Fujian Medical University, Xiamen, 361003 Fujian China
- Department of Otolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Xiamen University, No. 55 Zhenhai Road, Xiamen, 361003 Fujian China
- Xiamen Key Laboratory of Otolaryngology, Head and Neck Surgery, Xiamen, 361003 Fujian China
| |
Collapse
|
6
|
Exosomal Non-Coding RNAs: Novel Regulators of Macrophage-Linked Intercellular Communication in Lung Cancer and Inflammatory Lung Diseases. Biomolecules 2023; 13:biom13030536. [PMID: 36979471 PMCID: PMC10046066 DOI: 10.3390/biom13030536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023] Open
Abstract
Macrophages are innate immune cells and often classified as M1 macrophages (pro-inflammatory states) and M2 macrophages (anti-inflammatory states). Exosomes are cell-derived nanovesicles that range in diameter from 30 to 150 nm. Non-coding RNAs (ncRNAs), including microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs), are abundant in exosomes and exosomal ncRNAs influence immune responses. Exosomal ncRNAs control macrophage-linked intercellular communication via their targets or signaling pathways, which can play positive or negative roles in lung cancer and inflammatory lung disorders, including acute lung injury (ALI), asthma, and pulmonary fibrosis. In lung cancer, exosomal ncRNAs mediated intercellular communication between lung tumor cells and tumor-associated macrophages (TAMs), coordinating cancer proliferation, migration, invasion, metastasis, immune evasion, and therapy resistance. In inflammatory lung illnesses, exosomal ncRNAs mediate macrophage activation and inflammation to promote or inhibit lung damage. Furthermore, we also discussed the possible applications of exosomal ncRNA-based therapies for lung disorders.
Collapse
|
7
|
Zhao S, Sun Y, Wu X, Yang Y, Fan K, Hu K, Qin Y, Li K, Lin L, Chen K, Ma Y, Zhu M, Liu G, Zhang L. Sirtuin 1 activator alleviated lethal inflammatory injury via promotion of autophagic degradation of pyruvate kinase M2. Front Pharmacol 2023; 14:1092943. [PMID: 37101542 PMCID: PMC10123272 DOI: 10.3389/fphar.2023.1092943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/28/2023] [Indexed: 04/28/2023] Open
Abstract
Upregulation of pyruvate kinase M2 (PKM2) is critical for the orchestration of metabolism and inflammation in critical illness, while autophagic degradation is a recently revealed mechanism that counter-regulates PKM2. Accumulating evidence suggests that sirtuin 1 (SIRT1) function as a crucial regulator in autophagy. The present study investigated whether SIRT1 activator would downregulate PKM2 in lethal endotoxemia via promotion of its autophagic degradation. The results indicated that lethal dose of lipopolysaccharide (LPS) exposure decreased the level of SIRT1. Treatment with SRT2104, a SIRT1 activator, reversed LPS-induced downregulation of LC3B-II and upregulation of p62, which was associated with reduced level of PKM2. Activation of autophagy by rapamycin also resulted in reduction of PKM2. The decline of PKM2 in SRT2104-treated mice was accompanied with compromised inflammatory response, alleviated lung injury, suppressed elevation of blood urea nitrogen (BUN) and brain natriuretic peptide (BNP), and improved survival of the experimental animals. In addition, co-administration of 3-methyladenine, an autophagy inhibitor, or Bafilomycin A1, a lysosome inhibitor, abolished the suppressive effects of SRT2104 on PKM2 abundance, inflammatory response and multiple organ injury. Therefore, promotion of autophagic degradation of PKM2 might be a novel mechanism underlying the anti-inflammatory benefits of SIRT1 activator.
Collapse
Affiliation(s)
- Shuang Zhao
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
- Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yili Sun
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Xicheng Wu
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Yongqiang Yang
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Kerui Fan
- Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Kai Hu
- Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Yasha Qin
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Kexin Li
- Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Ling Lin
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Kun Chen
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
| | - Yuhua Ma
- Xinjiang Key Laboratory of Clinical Genetic Testing and Biomedical Information, Karamay, China
| | - Min Zhu
- Xinjiang Key Laboratory of Clinical Genetic Testing and Biomedical Information, Karamay, China
| | - Gang Liu
- Medical Sciences Research Center, University-Town Hospital of Chongqing Medical University, Chongqing, China
- Department of Emergency and Critical Care Medicine, University-Town Hospital of Chongqing Medical University, Chongqing, China
- *Correspondence: Gang Liu, ; Li Zhang,
| | - Li Zhang
- Department of Pathophysiology, Basic Medical College, Chongqing Medical University, Chongqing, China
- *Correspondence: Gang Liu, ; Li Zhang,
| |
Collapse
|
8
|
Wang L, Yuan X, Li Z, Zhi F. The Role of Macrophage Autophagy in Asthma: A Novel Therapeutic Strategy. Mediators Inflamm 2023; 2023:7529685. [PMID: 37181813 PMCID: PMC10175021 DOI: 10.1155/2023/7529685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 04/05/2023] [Accepted: 04/25/2023] [Indexed: 05/16/2023] Open
Abstract
Asthma is a chronic respiratory disease frequently associated with airway inflammation and remodeling. The development of asthma involves various inflammatory phenotypes that impact therapeutic effects, and macrophages are master innate immune cells in the airway that exert diverse functions including phagocytosis, antigen presentation, and pathogen clearance, playing an important role in the pathogeneses of asthma. Recent studies have indicated that autophagy of macrophages affects polarization of phenotype and regulation of inflammation, which implies that regulating autophagy of macrophages may be a potential strategy for the treatment of asthma. Thus, this review summarizes the signaling pathways and effects of macrophage autophagy in asthma, which will provide a tactic for the development of novel targets for the treatment of this disease.
Collapse
Affiliation(s)
- Lijie Wang
- Department of Respiratory Medicine, The First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Xingxing Yuan
- Heilongjiang University of Chinese Medicine, Harbin 150040, China
- Department of Gastroenterology, Heilongjiang Academy of Traditional Chinese Medicine, Harbin 150006, China
| | - Zhuying Li
- Department of Respiratory Medicine, The First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Fumin Zhi
- Department of Medical, The First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| |
Collapse
|
9
|
The Role of Pulmonary Surfactant Phospholipids in Fibrotic Lung Diseases. Int J Mol Sci 2022; 24:ijms24010326. [PMID: 36613771 PMCID: PMC9820286 DOI: 10.3390/ijms24010326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/13/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Diffuse parenchymal lung diseases (DPLD) or Interstitial lung diseases (ILD) are a heterogeneous group of lung conditions with common characteristics that can progress to fibrosis. Within this group of pneumonias, idiopathic pulmonary fibrosis (IPF) is considered the most common. This disease has no known cause, is devastating and has no cure. Chronic lesion of alveolar type II (ATII) cells represents a key mechanism for the development of IPF. ATII cells are specialized in the biosynthesis and secretion of pulmonary surfactant (PS), a lipid-protein complex that reduces surface tension and minimizes breathing effort. Some differences in PS composition have been reported between patients with idiopathic pulmonary disease and healthy individuals, especially regarding some specific proteins in the PS; however, few reports have been conducted on the lipid components. This review focuses on the mechanisms by which phospholipids (PLs) could be involved in the development of the fibroproliferative response.
Collapse
|
10
|
Lionetti V. The Role of Exosomes in Health and Disease. Int J Mol Sci 2022; 23:ijms231911011. [PMID: 36232305 PMCID: PMC9569976 DOI: 10.3390/ijms231911011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/17/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Who would have thought that the discovery made by researchers at Washington University [...]
Collapse
Affiliation(s)
- Vincenzo Lionetti
- Unit of Translational Critical Care Medicine, Scuola Superiore Sant’Anna, 56127 Pisa, Italy;
- UOSVD Anesthesiology and Intensive Care Medicine, Fondazione Toscana “Gabriele Monasterio”, 56124 Pisa, Italy
| |
Collapse
|