101
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Huang XW, Lu S, Pan W, Zhong MZ, Chai JW, Liu YH, Zeng K, Xi LY. Autophagy benefits the in vitro and in vivo clearance of Talaromyces marneffei. Microb Pathog 2023; 180:106146. [PMID: 37150309 DOI: 10.1016/j.micpath.2023.106146] [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: 04/06/2023] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
Talaromycosis, namely Talaromyces marneffei infection, is increasing gradually and has a high mortality rate even under antifungal therapy. Although autophagy acts differently on different pathogens, it is a promising therapeutic strategy. However, information on autophagy in macrophages and animals upon infection by T. marneffei is still limited. Therefore, several models were employed here to investigate the role of autophagy in host defense against T. marneffei, including RAW264.7 macrophages as in vitro models, different types of Caenorhabditis elegans and BALB/c mice as in vivo models. We applied the clinical T. marneffei isolate SUMS0152 in this study. T. marneffei-infected macrophages exhibit increased formation of autophagosomes. Further, macrophage autophagy promoted by rapamycin or Earle's balanced salt solution (EBSS) inhibited the viability of intracellular T. marneffei. In vivo, compared with uninfected Caenorhabditis elegans, the wild-type nematodes upregulated the expression of the autophagy-related gene lgg-1 and atg-18, and nematodes carrying GFP reporter were induced to form autophagosomes (GFP::LGG-1) after T. marneffei infection. Furthermore, the knockdown of lgg-1 significantly reduced the survival rate of T. marneffei-infected nematodes. Likewise, the autophagy activator rapamycin reduced the fungal burden and suppressed lung inflammation in a mouse model of infection. In conclusion, autophagy is essential for host defense against T. marneffei in vitro and in vivo. Therefore, autophagy may be an attractive target for developing new therapeutics to treat talaromycosis.
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Affiliation(s)
- Xiao-Wen Huang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Sha Lu
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West Yanjiang Rd., Guangzhou, 510120, China
| | - Wen Pan
- Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, 02903, USA
| | - Mei-Zhen Zhong
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jin-Wei Chai
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Ying-Hui Liu
- Dermatology Department, Dermatology Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Li-Yan Xi
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 West Yanjiang Rd., Guangzhou, 510120, China; Dermatology Department, Dermatology Hospital, Southern Medical University, Guangzhou, 510515, China.
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102
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Rodriguez-Rodriguez L, Gillet L, Machiels B. Shaping of the alveolar landscape by respiratory infections and long-term consequences for lung immunity. Front Immunol 2023; 14:1149015. [PMID: 37081878 PMCID: PMC10112541 DOI: 10.3389/fimmu.2023.1149015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/15/2023] [Indexed: 04/07/2023] Open
Abstract
Respiratory infections and especially viral infections, along with other extrinsic environmental factors, have been shown to profoundly affect macrophage populations in the lung. In particular, alveolar macrophages (AMs) are important sentinels during respiratory infections and their disappearance opens a niche for recruited monocytes (MOs) to differentiate into resident macrophages. Although this topic is still the focus of intense debate, the phenotype and function of AMs that recolonize the niche after an inflammatory insult, such as an infection, appear to be dictated in part by their origin, but also by local and/or systemic changes that may be imprinted at the epigenetic level. Phenotypic alterations following respiratory infections have the potential to shape lung immunity for the long-term, leading to beneficial responses such as protection against allergic airway inflammation or against other infections, but also to detrimental responses when associated with the development of immunopathologies. This review reports the persistence of virus-induced functional alterations in lung macrophages, and discusses the importance of this imprinting in explaining inter-individual and lifetime immune variation.
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103
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Yang C, Li J, Deng Z, Luo S, Liu J, Fang W, Liu F, Liu T, Zhang X, Zhang Y, Meng Z, Zhang S, Luo J, Liu C, Yang D, Liu L, Sukhova GK, Sadybekov A, Katritch V, Libby P, Wang J, Guo J, Shi GP. Eosinophils protect pressure overload- and β-adrenoreceptor agonist-induced cardiac hypertrophy. Cardiovasc Res 2023; 119:195-212. [PMID: 35394031 PMCID: PMC10022866 DOI: 10.1093/cvr/cvac060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 02/01/2022] [Accepted: 03/23/2022] [Indexed: 11/12/2022] Open
Abstract
AIMS Blood eosinophil (EOS) counts and EOS cationic protein (ECP) levels associate positively with major cardiovascular disease (CVD) risk factors and prevalence. This study investigates the role of EOS in cardiac hypertrophy. METHODS AND RESULTS A retrospective cross-section study of 644 consecutive inpatients with hypertension examined the association between blood EOS counts and cardiac hypertrophy. Pressure overload- and β-adrenoreceptor agonist isoproterenol-induced cardiac hypertrophy was produced in EOS-deficient ΔdblGATA mice. This study revealed positive correlations between blood EOS counts and left ventricular (LV) mass and mass index in humans. ΔdblGATA mice showed exacerbated cardiac hypertrophy and dysfunction, with increased LV wall thickness, reduced LV internal diameter, and increased myocardial cell size, death, and fibrosis. Repopulation of EOS from wild-type (WT) mice, but not those from IL4-deficient mice ameliorated cardiac hypertrophy and cardiac dysfunctions. In ΔdblGATA and WT mice, administration of ECP mEar1 improved cardiac hypertrophy and function. Mechanistic studies demonstrated that EOS expression of IL4, IL13, and mEar1 was essential to control mouse cardiomyocyte hypertrophy and death and cardiac fibroblast TGF-β signalling and fibrotic protein synthesis. The use of human cardiac cells yielded the same results. Human ECP, EOS-derived neurotoxin, human EOS, or murine recombinant mEar1 reduced human cardiomyocyte death and hypertrophy and human cardiac fibroblast TGF-β signalling. CONCLUSION Although blood EOS counts correlated positively with LV mass or LV mass index in humans, this study established a cardioprotective role for EOS IL4 and cationic proteins in cardiac hypertrophy and tested a therapeutic possibility of ECPs in this human CVD.
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Affiliation(s)
| | | | | | | | | | - Wenqian Fang
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Feng Liu
- Department of Geriatrics, National Key Clinical Specialty, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510000, China
| | - Tianxiao Liu
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Xian Zhang
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Yuanyuan Zhang
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
- Hainan Provincial Key Laboratory for Tropical Cardiovascular Diseases Research & Key Laboratory of Emergency and Trauma of Ministry of Education, Institute of Cardiovascular Research of the First Affiliated Hospital, Hainan Medical University, Haikou 571199, China
| | - Zhaojie Meng
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Shuya Zhang
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
- Hainan Provincial Key Laboratory for Tropical Cardiovascular Diseases Research & Key Laboratory of Emergency and Trauma of Ministry of Education, Institute of Cardiovascular Research of the First Affiliated Hospital, Hainan Medical University, Haikou 571199, China
| | - Jianfang Luo
- Department of Cardiology, Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangzhou 510000, China
| | - Conglin Liu
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Dafeng Yang
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Lijun Liu
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
| | - Galina K Sukhova
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Anastasiia Sadybekov
- Department of Chemistry, Bridge Institute, USC Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA 90089, USA
- Department of Biological Sciences, Bridge Institute, USC Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Vsevolod Katritch
- Department of Chemistry, Bridge Institute, USC Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA 90089, USA
- Department of Biological Sciences, Bridge Institute, USC Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Peter Libby
- Department of Medicine, Cardiovascular Medicine, Brigham and Women’s Hospital and Harvard Medical School, 77 Avenue Louis Pasteur, NRB-7, Boston, MA 02115, USA
| | - Jing Wang
- Corresponding authors. Tel: +1 617 525 4358, E-mail: (G.-P.S.); Tel: +86 10 6915 6477, E-mail: (J.W.); Tel: +86 1868983 5101, E-mail: (J.G.)
| | - Junli Guo
- Corresponding authors. Tel: +1 617 525 4358, E-mail: (G.-P.S.); Tel: +86 10 6915 6477, E-mail: (J.W.); Tel: +86 1868983 5101, E-mail: (J.G.)
| | - Guo-Ping Shi
- Corresponding authors. Tel: +1 617 525 4358, E-mail: (G.-P.S.); Tel: +86 10 6915 6477, E-mail: (J.W.); Tel: +86 1868983 5101, E-mail: (J.G.)
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104
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Li X, Yin L, Liao J, Yang J, Cai B, Yu Y, Su S, Du Z, Li X, Zhou Y, Chen P, Cho WJ, Chattipakorn N, Samorodov AV, Pavlov VN, Zhang F, Liang G, Tang Q. Novel O-benzylcinnamic acid derivative L26 treats acute lung injury in mice by MD-2. Eur J Med Chem 2023; 252:115289. [PMID: 36963290 DOI: 10.1016/j.ejmech.2023.115289] [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: 01/27/2023] [Revised: 03/07/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023]
Abstract
Acute lung injury (ALI) is an inflammation-mediated respiratory disease that is associated with a high mortality rate. In this study, a series of novel O-benzylcinnamic acid derivatives were designed and synthesized using cinnamic acid as the lead compound. We tested the preliminary anti-inflammatory activity of the compounds by evaluating their effect on inhibiting the activity of alkaline phosphatase (ALP) in Hek-Blue-TLR4 cells, in which compound L26 showed the best activity and 7-fold more active than CIN. ELISA, immunoprecipitation, and molecular docking indicated that L26 targeted MD-2 protein and competed with LPS to bind to MD-2, which resulted in the inhibition of inflammation. In the LPS-induced mouse model of ALI, L26 was found to decrease ALP activity and inflammatory cytokine TNF-α release to reduce lung injury by inhibiting the NF-κB signaling pathway. Acute toxicity experiments showed that high doses of L26 did not cause adverse reactions in mice, and it was safe in vivo. Also, the preliminary pharmacokinetic parameters of L26 were investigated in SD rats (T1/2 = 4.246 h). In summary, L26 exhibited optimal pharmacodynamic and pharmacokinetic characteristics, which suggested that L26 could serve as a potential agent for the development of ALI treatment.
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Affiliation(s)
- Xiang Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325024, Zhejiang, China
| | - Lina Yin
- School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, Zhejiang, China
| | - Jing Liao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Jun Yang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Binhao Cai
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yiming Yu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Sijia Su
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Zhiteng Du
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xiaobo Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Ying Zhou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Pan Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China; College of Pharmacy, Chonnam National University, Gwangju, 61186, South Korea
| | - Won-Jea Cho
- College of Pharmacy, Chonnam National University, Gwangju, 61186, South Korea
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Aleksandr V Samorodov
- Department of Pharmacology, Bashkir State Medical University, Ufa City, 450005, Russia
| | - Valentin N Pavlov
- Department of Pharmacology, Bashkir State Medical University, Ufa City, 450005, Russia
| | - Fengzhi Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325024, Zhejiang, China; School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, Zhejiang, China.
| | - Qidong Tang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325024, Zhejiang, China.
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105
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Therapeutic strategies targeting pro-fibrotic macrophages in interstitial lung disease. Biochem Pharmacol 2023; 211:115501. [PMID: 36921632 DOI: 10.1016/j.bcp.2023.115501] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is the representative phenotype of interstitial lung disease where severe scarring develops in the lung interstitium. Although antifibrotic treatments are available and have been shown to slow the progression of IPF, improved therapeutic options are still needed. Recent data indicate that macrophages play essential pro-fibrotic roles in the pathogenesis of pulmonary fibrosis. Historically, macrophages have been classified into two functional subtypes, "M1" and "M2," and it is well described that "M2" or "alternatively activated" macrophages contribute to fibrosis via the production of fibrotic mediators, such as TGF-β, CTGF, and CCL18. However, highly plastic macrophages may possess distinct functions and phenotypes in the fibrotic lung environment. Thus, M2-like macrophages in vitro and pro-fibrotic macrophages in vivo are not completely identical cell populations. Recent developments in transcriptome analysis, including single-cell RNA sequencing, have attempted to depict more detailed phenotypic characteristics of pro-fibrotic macrophages. This review will outline the role and characterization of pro-fibrotic macrophages in fibrotic lung diseases and discuss the possibility of treating lung fibrosis by preventing or reprogramming the polarity of macrophages. We also utilized a systematic approach to review the literature and identify novel and promising therapeutic agents that follow this treatment strategy.
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106
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Ahmed AM, Hussein MR. Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:T229-T239. [PMID: 36690154 DOI: 10.1016/j.ad.2022.08.029] [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: 05/24/2022] [Accepted: 08/30/2022] [Indexed: 01/22/2023] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
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Affiliation(s)
- A M Ahmed
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto
| | - M R Hussein
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto.
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107
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Casalino-Matsuda SM, Chen F, Gonzalez-Gonzalez FJ, Matsuda H, Nair A, Abdala-Valencia H, Budinger GRS, Dong JT, Beitel GJ, Sporn PHS. Myeloid Zfhx3 Deficiency Protects Against Hypercapnia-induced Suppression of Host Defense Against Influenza A Virus. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.28.530480. [PMID: 36909510 PMCID: PMC10002734 DOI: 10.1101/2023.02.28.530480] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Hypercapnia, elevation of the partial pressure of CO 2 in blood and tissues, is a risk factor for mortality in patients with severe acute and chronic lung diseases. We previously showed that hypercapnia inhibits multiple macrophage and neutrophil antimicrobial functions, and that elevated CO 2 increases the mortality of bacterial and viral pneumonia in mice. Here, we show that normoxic hypercapnia downregulates innate immune and antiviral gene programs in alveolar macrophages (AMØs). We also show that zinc finger homeobox 3 (Zfhx3), mammalian ortholog of zfh2, which mediates hypercapnic immune suppression in Drosophila , is expressed in mouse and human MØs. Deletion of Zfhx3 in the myeloid lineage blocked the suppressive effect of hypercapnia on immune gene expression in AMØs and decreased viral replication, inflammatory lung injury and mortality in hypercapnic mice infected with influenza A virus. Our results establish Zfhx3 as the first known mammalian mediator of CO 2 effects on immune gene expression and lay the basis for future studies to identify therapeutic targets to interrupt hypercapnic immunosuppression in patients with advanced lung diseases. Graphical abstract
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108
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Guo H, Guan J, Wu X, Wei Y, Zhao J, Zhou Y, Li F, Pang HB. Peptide-guided delivery improves the therapeutic efficacy and safety of glucocorticoid drugs for treating acute lung injury. Mol Ther 2023; 31:875-889. [PMID: 36609145 PMCID: PMC10014283 DOI: 10.1016/j.ymthe.2023.01.003] [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: 06/08/2022] [Revised: 11/08/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023] Open
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are life-threatening conditions with excessive inflammation in the lung. Glucocorticoids had been widely used for ALI/ARDS, but their clinical benefit remains unclear. Here, we tackled the problem by conjugating prednisolone (PSL) with a targeting peptide termed CRV. Systemically administered CRV selectively homes to the inflamed lung of a murine ALI model, but not healthy organs or the lung of healthy mice. The expression of the CRV receptor, retinoid X receptor β, was elevated in the lung of ALI mice and patients with interstitial lung diseases, which may be the basis of CRV targeting. We then covalently conjugated PSL and CRV with a reactive oxygen species (ROS)-responsive linker in the middle. While being intact in blood, the ROS linker was cleaved intracellularly to release PSL for action. In vitro, CRV-PSL showed an anti-inflammatory effect similar to that of PSL. In vivo, CRV conjugation increased the amount of PSL in the inflamed lung but reduced its accumulation in healthy organs. Accordingly, CRV-PSL significantly reduced lung injury and immune-related side effects elsewhere. Taken together, our peptide-based strategy for targeted delivery of glucocorticoids for ALI may have great potential for clinical translation.
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Affiliation(s)
- Hong Guo
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jibin Guan
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Xian Wu
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yushuang Wei
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jiaqi Zhao
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yan Zhou
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Faqian Li
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Hong-Bo Pang
- Department of Pharmaceutics, School of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA.
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109
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Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:229-239. [PMID: 36332689 DOI: 10.1016/j.ad.2022.08.023] [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: 05/24/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 12/13/2022] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
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110
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Valentine MS, Weigel C, Kamga Gninzeko F, Tho C, Gräler MH, Reynolds AM, Spiegel S, Heise RL. S1P lyase inhibition prevents lung injury following high pressure-controlled mechanical ventilation in aging mice. Exp Gerontol 2023; 173:112074. [PMID: 36566871 PMCID: PMC9975034 DOI: 10.1016/j.exger.2022.112074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Ventilator-induced Lung Injury (VILI) is characterized by hypoxia, inflammatory cytokine influx, loss of alveolar barrier integrity, and decreased lung compliance. Aging influences lung structure and function and is a predictive factor in the severity of VILI; however, the mechanisms of aging that influence the progression or increased susceptibility remain unknown. Aging impacts immune system function and may increase inflammation in healthy individuals. Recent studies suggest that the bioactive sphingolipid mediator sphingosine-1-phosphate (S1P) and the enzyme that degrades it S1P lyase (SPL) may be involved in lung pathologies including acute lung injury. It is unknown whether aging influences S1P and SPL expression that have been implicated in lung inflammation, injury, and cell apoptosis. We hypothesized that aging and injurious mechanical ventilation synergistically impair S1P levels and enhance S1P lyase (SPL) expression that amplifies alveolar barrier damage and diminishes pulmonary function. Young (2-3 mo) and old (20-25 mo) C57BL/6 mice were mechanically ventilated for 2 h using pressure-controlled mechanical ventilation (PCMV) at 45 cmH2O and 35 cmH2O, respectively. We assessed the impact of aging and PCMV on several indications of acute lung injury, immune cell recruitment, S1P levels and SPL activity. Furthermore, we evaluated the protective effects of inhibiting SPL by tetrahydroxybutylimidazol (THI) administration on the negative outcomes associated with aging and mechanical injury. PCMV exacerbated lung injury in old mice and increased neutrophil influx that was further exacerbated due to aging. SPL expression increased in the young and old ventilated mice and the old nonventilated group. THI treatment reduced several of the indicators of lung injury and resulted in elevated S1P levels in lung tissue and plasma from mice that were injured from mechanical ventilation. CD80 and CD206 activation markers of alveolar and interstitial macrophages were also influenced by THI. SPL inhibition may be a viable therapeutic approach for patients requiring mechanical ventilation by preventing or regulating the exaggerated inflammatory response and reducing lung injury.
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Affiliation(s)
- M S Valentine
- Department of Biomedical Engineering, Virginia Commonwealth University, United States of America
| | - C Weigel
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, United States of America
| | - F Kamga Gninzeko
- Department of Biomedical Engineering, Virginia Commonwealth University, United States of America
| | - C Tho
- Department of Biomedical Engineering, Virginia Commonwealth University, United States of America
| | - M H Gräler
- Department of Anesthesiology and Intensive Care Medicine, Center for Molecular Biomedicine (CMB) and Center for Sepsis Control and Care (CSCC), Jena University Hospital, Jena, Germany
| | - A M Reynolds
- Department of Mathematics and Applied Mathematics, Virginia Commonwealth University, United States of America
| | - S Spiegel
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, United States of America
| | - R L Heise
- Department of Biomedical Engineering, Virginia Commonwealth University, United States of America.
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Gainullina A, Mogilenko DA, Huang LH, Todorov H, Narang V, Kim KW, Yng LS, Kent A, Jia B, Seddu K, Krchma K, Wu J, Crozat K, Tomasello E, Dress R, See P, Scott C, Gibbings S, Bajpai G, Desai JV, Maier B, This S, Wang P, Aguilar SV, Poupel L, Dussaud S, Zhou TA, Angeli V, Blander JM, Choi K, Dalod M, Dzhagalov I, Gautier EL, Jakubzick C, Lavine K, Lionakis MS, Paidassi H, Sieweke MH, Ginhoux F, Guilliams M, Benoist C, Merad M, Randolph GJ, Sergushichev A, Artyomov MN. Network analysis of large-scale ImmGen and Tabula Muris datasets highlights metabolic diversity of tissue mononuclear phagocytes. Cell Rep 2023; 42:112046. [PMID: 36708514 PMCID: PMC10372199 DOI: 10.1016/j.celrep.2023.112046] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/06/2022] [Accepted: 01/17/2023] [Indexed: 01/28/2023] Open
Abstract
The diversity of mononuclear phagocyte (MNP) subpopulations across tissues is one of the key physiological characteristics of the immune system. Here, we focus on understanding the metabolic variability of MNPs through metabolic network analysis applied to three large-scale transcriptional datasets: we introduce (1) an ImmGen MNP open-source dataset of 337 samples across 26 tissues; (2) a myeloid subset of ImmGen Phase I dataset (202 MNP samples); and (3) a myeloid mouse single-cell RNA sequencing (scRNA-seq) dataset (51,364 cells) assembled based on Tabula Muris Senis. To analyze such large-scale datasets, we develop a network-based computational approach, genes and metabolites (GAM) clustering, for unbiased identification of the key metabolic subnetworks based on transcriptional profiles. We define 9 metabolic subnetworks that encapsulate the metabolic differences within MNP from 38 different tissues. Obtained modules reveal that cholesterol synthesis appears particularly active within the migratory dendritic cells, while glutathione synthesis is essential for cysteinyl leukotriene production by peritoneal and lung macrophages.
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Affiliation(s)
- Anastasiia Gainullina
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Computer Technologies Department, ITMO University, St. Petersburg 197101, Russia; Laboratory of Bioinformatics and Molecular Genetics, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow 119334, Russia
| | - Denis A Mogilenko
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Medicine, Department of Pathology, Microbiology, and Immunology, Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Li-Hao Huang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Helena Todorov
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | - Vipin Narang
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Ki-Wook Kim
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lim Sheau Yng
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, Department of Microbiology and Immunology, National University of Singapore, Singapore 117545, Singapore; Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore 117545, Singapore
| | - Andrew Kent
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Baosen Jia
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Kumba Seddu
- Department of Immunology, Harvard Medical School, Boston, MA 02115, USA
| | - Karen Krchma
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jun Wu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Karine Crozat
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Elena Tomasello
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Regine Dress
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Peter See
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Charlotte Scott
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | - Sophie Gibbings
- Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Geetika Bajpai
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Jigar V Desai
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Barbara Maier
- Immunology Institute and Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sébastien This
- Centre International de Recherche en Infectiologie (CIRI), University Lyon, Inserm, U1111, Université Claude Bernard Lyon ,1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Peter Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Stephanie Vargas Aguilar
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France; Center for Regenerative Therapies (CRTD), TU Dresden, 01307 Dresden, Germany; Max-Delbrück-Centrum für Molekulare Medizin in der Helmholtzgemeinschaft (MDC), 13125 Berlin, Germany
| | - Lucie Poupel
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Sébastien Dussaud
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Tyng-An Zhou
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei 112, Taiwan
| | - Veronique Angeli
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, Department of Microbiology and Immunology, National University of Singapore, Singapore 117545, Singapore; Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore 117545, Singapore
| | - J Magarian Blander
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Kyunghee Choi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Marc Dalod
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Ivan Dzhagalov
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei 112, Taiwan
| | - Emmanuel L Gautier
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Claudia Jakubzick
- Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Kory Lavine
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Michail S Lionakis
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Helena Paidassi
- Centre International de Recherche en Infectiologie (CIRI), University Lyon, Inserm, U1111, Université Claude Bernard Lyon ,1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Michael H Sieweke
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France; Center for Regenerative Therapies (CRTD), TU Dresden, 01307 Dresden, Germany; Max-Delbrück-Centrum für Molekulare Medizin in der Helmholtzgemeinschaft (MDC), 13125 Berlin, Germany
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Martin Guilliams
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | | | - Miriam Merad
- Immunology Institute and Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Gwendalyn J Randolph
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Alexey Sergushichev
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Computer Technologies Department, ITMO University, St. Petersburg 197101, Russia.
| | - Maxim N Artyomov
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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112
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Cho SJ, Pronko A, Yang J, Pagan K, Stout-Delgado H. Role of Cholesterol 25-Hydroxylase (Ch25h) in Mediating Innate Immune Responses to Streptococcus pneumoniae Infection. Cells 2023; 12:570. [PMID: 36831236 PMCID: PMC9953875 DOI: 10.3390/cells12040570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023] Open
Abstract
Alveolar macrophages (AM) are long-lived tissue-resident innate immune cells of the airways. AM are key effectors of recognition, initiation, and resolution of the host defense against microbes and play an essential role in mediating host responses to Streptococcus pneumoniae infection. Lipid metabolism in AM can significantly impact cellular function and biology. Dysregulated metabolism contributes to an accumulation of lipids, unfolded protein response induction, and inflammatory cytokine production. Our study was designed to investigate the impact of Ch25h on mediating innate immune responses by macrophages during S. pneumoniae infection. Using wild-type and Ch25-/- mice, we examined the role of cholesterol metabolism on inflammatory cytokine production and bacterial clearance. Our results demonstrate that Ch25h plays an important role in the initiation and intensity of cytokine and chemokine production in the lung during S. pneumoniae infection. In the absence of Ch25h, there was enhanced phagocytosis and bacterial clearance. Taken together, our findings demonstrate the important role of Ch25h in modulating host responsiveness to S. pneumoniae infection.
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113
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Sedney CJ, Caulfield A, Dewan KK, Blas-Machado U, Callender M, Manley NR, Harvill ET. Novel murine model reveals an early role for pertussis toxin in disrupting neonatal immunity to Bordetella pertussis. Front Immunol 2023; 14:1125794. [PMID: 36855631 PMCID: PMC9968397 DOI: 10.3389/fimmu.2023.1125794] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/26/2023] [Indexed: 02/10/2023] Open
Abstract
The increased susceptibility of neonates to specific pathogens has previously been attributed to an underdeveloped immune system. More recent data suggest neonates have effective protection against most pathogens but are particularly susceptible to those that target immune functions specific to neonates. Bordetella pertussis (Bp), the causative agent of "whooping cough", causes more serious disease in infants attributed to its production of pertussis toxin (PTx), although the neonate-specific immune functions it targets remain unknown. Problematically, the rapid development of adult immunity in mice has confounded our ability to study interactions of the neonatal immune system and its components, such as virtual memory T cells which are prominent prior to the maturation of the thymus. Here, we examine the rapid change in susceptibility of young mice and define a period from five- to eight-days-old during which mice are much more susceptible to Bp than mice even a couple days older. These more narrowly defined "neonatal" mice display significantly increased susceptibility to wild type Bp but very rapidly and effectively respond to and control Bp lacking PTx, more rapidly even than adult mice. Thus, PTx efficiently blocks some very effective form(s) of neonatal protective immunity, potentially providing a tool to better understand the neonatal immune system. The rapid clearance of the PTx mutant correlates with the early accumulation of neutrophils and T cells and suggests a role for PTx in disrupting their accumulation. These results demonstrate a striking age-dependent response to Bp, define an early age of extreme susceptibility to Bp, and demonstrate that the neonatal response can be more efficient than the adult response in eliminating bacteria from the lungs, but these neonatal functions are substantially blocked by PTx. This refined definition of "neonatal" mice may be useful in the study of other pathogens that primarily infect neonates, and PTx may prove a particularly valuable tool for probing the poorly understood neonatal immune system.
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Affiliation(s)
- Colleen J. Sedney
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Amanda Caulfield
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Kaylan K. Dewan
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Uriel Blas-Machado
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Maiya Callender
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Nancy R. Manley
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
| | - Eric T. Harvill
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
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114
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Airway epithelial ITGB4 deficiency induces airway remodeling in a mouse model. J Allergy Clin Immunol 2023; 151:431-446.e16. [PMID: 36243221 DOI: 10.1016/j.jaci.2022.09.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 08/25/2022] [Accepted: 09/16/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Airway epithelial cells (AECs) with impaired barrier function contribute to airway remodeling through the activation of epithelial-mesenchymal trophic units (EMTUs). Although the decreased expression of ITGB4 in AECs is implicated in the pathogenesis of asthma, how ITGB4 deficiency impacts airway remodeling remains obscure. OBJECTIVE This study aims to determine the effect of epithelial ITGB4 deficiency on the barrier function of AECs, asthma susceptibility, airway remodeling, and EMTU activation. METHODS AEC-specific ITGB4 conditional knockout mice (ITGB4-/-) were generated and an asthma model was employed by the sensitization and challenge of house dust mite (HDM). EMTU activation-related growth factors were examined in ITGB4-silenced primary human bronchial epithelial cells of healthy subjects after HDM stimulation. Dexamethasone, the inhibitors of JNK phosphorylation or FGF2 were administered for the identification of the molecular mechanisms of airway remodeling in HDM-exposed ITGB4-/- mice. RESULTS ITGB4 deficiency in AECs enhanced asthma susceptibility and airway remodeling by disrupting airway epithelial barrier function. Aggravated airway remodeling in HDM-exposed ITGB4-/- mice was induced through the enhanced activation of EMTU mediated by Src homology domain 2-containing protein tyrosine phosphatase 2/c-Jun N-terminal kinase/Jun N-terminal kinase-dependent transcription factor/FGF2 (SHP2/JNK/c-Jun/FGF2) signaling pathway, which was partially independent of airway inflammation. Both JNK and FGF2 inhibitors significantly inhibited the aggravated airway remodeling and EMTU activation in HDM-exposed ITGB4-/- mice. CONCLUSIONS Airway epithelial ITGB4 deficiency induces airway remodeling in a mouse model of asthma through enhanced EMTU activation that is regulated by the SHP2/JNK/c-Jun/FGF2 pathway.
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115
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Matsumura K, Takaki S, Kirikae T. Mycobacterial protein PE_PGRS30 induces macrophage apoptosis through prohibitin 2 mitochondrial function interference. Front Microbiol 2023; 14:1080369. [PMID: 36778852 PMCID: PMC9911437 DOI: 10.3389/fmicb.2023.1080369] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 01/10/2023] [Indexed: 01/28/2023] Open
Abstract
PE_PGRS30 belongs to the PE_PGRS protein family and is characterized by a conserved Pro-Glu (PE) domain and a typically polymorphic GC-rich sequence (PGRS) domain. PE_PGRS30 is a virulence factor of Mycobacterium tuberculosis that induces macrophage cell death. We found that RAW264.7 cells and murine alveolar macrophages underwent apoptosis in response to PE_PGRS30. The host protein prohibitin 2 (PHB2) was identified as a target molecule. PE_PGRS30 and PHB2 interact via the PGRS domain and mitochondrial targeting sequence, respectively. PHB2 overexpression reduced macrophage apoptosis in response to PE_PGRS30. PE_PGRS30 co-localized with PHB2, not in mitochondria, but in lysosomes. The maintenance of mitochondrial structure by PHB2 was impaired in response to the PGRS domain. These results indicated that PE_PGRS30 reduces PHB2 in mitochondria, resulting in mitochondrial dysfunction and cellular apoptosis.
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Affiliation(s)
- Kazunori Matsumura
- Department of Immune Regulation, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Satoshi Takaki
- Department of Immune Regulation, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
| | - Teruo Kirikae
- Graduate School of Medicine, Juntendo University, Tokyo, Japan,*Correspondence: Teruo Kirikae,
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116
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Interstitial Macrophages Lead Early Stages of Bleomycin-Induced Lung Fibrosis and Induce Fibroblasts Activation. Cells 2023; 12:cells12030402. [PMID: 36766744 PMCID: PMC9913327 DOI: 10.3390/cells12030402] [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: 10/18/2022] [Revised: 01/20/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023] Open
Abstract
A progressive fibrosing phenotype is critical in several lung diseases. It is irreversible and associated with early patient mortality. Growing evidence has revealed pulmonary macrophages' role as modulators of the fibrotic processes. The proportion, phenotype, and function of alveolar (AM) and interstitial macrophages (IM) at the early stages of bleomycin-induced pulmonary fibrosis have not been clearly described. In this way, our study aimed to characterize these macrophage populations and investigate the effect on fibroblast activation. C57BL/6 mice were intratracheally injected with bleomycin and were sacrificed at day 3, 5, and 7 for the performance of flow cytometry and fluorescent-activated cell sorting analysis for protein and gene expression quantification. After bleomycin administration, the proportion of IM was significantly higher than that of AM, which showed a decay during the inflammatory phase, and peaked at day 7. At day 7 of the inflammatory phase, AM started shifting their phenotype from M1-like towards M2, while IM showed a M2-like phenotype. Conditioned medium derived from IM sorted at day 7 induced fibroblast activation and differentiation in myofibroblasts in vitro. Our findings indicate that IM are the largest macrophage population at the early stages of experimental pulmonary fibrosis and are secreted mediators able to activate fibroblasts, pointing to macrophage modulation as a potential therapeutic strategy to restrain progressive fibrosing lung disorders.
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117
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Zhang T, Zhang M, Yang L, Gao L, Sun W. Potential targeted therapy based on deep insight into the relationship between the pulmonary microbiota and immune regulation in lung fibrosis. Front Immunol 2023; 14:1032355. [PMID: 36761779 PMCID: PMC9904240 DOI: 10.3389/fimmu.2023.1032355] [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: 08/30/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Pulmonary fibrosis is an irreversible disease, and its mechanism is unclear. The lung is a vital organ connecting the respiratory tract and the outside world. The changes in lung microbiota affect the progress of lung fibrosis. The latest research showed that lung microbiota differs in healthy people, including idiopathic pulmonary fibrosis (IPF) and acute exacerbation-idiopathic pulmonary fibrosis (AE-IPF). How to regulate the lung microbiota and whether the potential regulatory mechanism can become a necessary targeted treatment of IPF are unclear. Some studies showed that immune response and lung microbiota balance and maintain lung homeostasis. However, unbalanced lung homeostasis stimulates the immune response. The subsequent biological effects are closely related to lung fibrosis. Core fucosylation (CF), a significant protein functional modification, affects the lung microbiota. CF regulates immune protein modifications by regulating key inflammatory factors and signaling pathways generated after immune response. The treatment of immune regulation, such as antibiotic treatment, vitamin D supplementation, and exosome micro-RNAs, has achieved an initial effect in clearing the inflammatory storm induced by an immune response. Based on the above, the highlight of this review is clarifying the relationship between pulmonary microbiota and immune regulation and identifying the correlation between the two, the impact on pulmonary fibrosis, and potential therapeutic targets.
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Affiliation(s)
- Tao Zhang
- School of Medicine, Nankai University, Tianjin, China
| | - Min Zhang
- Department of Geriatric Endocrinology, Sichuan Academy of Medical Sciences, Sichuan Provincial People's Hospital, Chengdu, China
| | - Liqing Yang
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, Chengdu, China
| | - Lingyun Gao
- Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, China,Medical College, University of Electronic Science and Technology, Chengdu, China,Guanghan People's Hospital, Guanghan, China,*Correspondence: Wei Sun, ; Lingyun Gao,
| | - Wei Sun
- Department of Respiratory and Critical Care Medicine, Sichuan Provincial People's Hospital, Chengdu, China,Medical College, University of Electronic Science and Technology, Chengdu, China,*Correspondence: Wei Sun, ; Lingyun Gao,
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118
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Wang D, Li W, Albasha N, Griffin L, Chang H, Amaya L, Ganguly S, Zeng L, Keum B, González-Navajas JM, Levin M, AkhavanAghdam Z, Snyder H, Schwartz D, Tao A, Boosherhri LM, Hoffman HM, Rose M, Estrada MV, Varki N, Herdman S, Corr M, Webster NJG, Raz E, Bertin S. Long-term exposure to house dust mites accelerates lung cancer development in mice. J Exp Clin Cancer Res 2023; 42:26. [PMID: 36670473 PMCID: PMC9863279 DOI: 10.1186/s13046-022-02587-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/26/2022] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Individuals with certain chronic inflammatory lung diseases have a higher risk of developing lung cancer (LC). However, the underlying mechanisms remain largely unknown. Here, we hypothesized that chronic exposure to house dust mites (HDM), a common indoor aeroallergen associated with the development of asthma, accelerates LC development through the induction of chronic lung inflammation (CLI). METHODS: The effects of HDM and heat-inactivated HDM (HI-HDM) extracts were evaluated in two preclinical mouse models of LC (a chemically-induced model using the carcinogen urethane and a genetically-driven model with oncogenic KrasG12D activation in lung epithelial cells) and on murine macrophages in vitro. Pharmacological blockade or genetic deletion of the Nod-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome, caspase-1, interleukin-1β (IL-1β), and C-C motif chemokine ligand 2 (CCL2) or treatment with an inhaled corticosteroid (ICS) was used to uncover the pro-tumorigenic effect of HDM. RESULTS: Chronic intranasal (i.n) instillation of HDM accelerated LC development in the two mouse models. Mechanistically, HDM caused a particular subtype of CLI, in which the NLRP3/IL-1β signaling pathway is chronically activated in macrophages, and made the lung microenvironment conducive to tumor development. The tumor-promoting effect of HDM was significantly decreased by heat treatment of the HDM extract and was inhibited by NLRP3, IL-1β, and CCL2 neutralization, or ICS treatment. CONCLUSIONS Collectively, these data indicate that long-term exposure to HDM can accelerate lung tumorigenesis in susceptible hosts (e.g., mice and potentially humans exposed to lung carcinogens or genetically predisposed to develop LC).
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Affiliation(s)
- Dongjie Wang
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
- Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wen Li
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
- The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy and Clinical Immunology, Center for Immunology, Inflammation and Immune-Mediated Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Natalie Albasha
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Lindsey Griffin
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Han Chang
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Lauren Amaya
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Sneha Ganguly
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Liping Zeng
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
- The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy and Clinical Immunology, Center for Immunology, Inflammation and Immune-Mediated Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bora Keum
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - José M González-Navajas
- Networked Biomedical Research Center for Hepatic and Digestive Diseases (CIBERehd), Hospital General Universitario de Alicante, Alicante, Spain
- Alicante Institute of Health and Biomedical Research (ISABIAL), Alicante, Spain
| | | | | | | | | | - Ailin Tao
- The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy and Clinical Immunology, Center for Immunology, Inflammation and Immune-Mediated Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Laela M Boosherhri
- Division of Pediatric Allergy, Immunology, and Rheumatology, Rady Children's Hospital of San Diego, University of California San Diego, La Jolla, CA, USA
| | - Hal M Hoffman
- Division of Pediatric Allergy, Immunology, and Rheumatology, Rady Children's Hospital of San Diego, University of California San Diego, La Jolla, CA, USA
| | - Michael Rose
- Tissue Technology Shared Resource, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Monica Valeria Estrada
- Tissue Technology Shared Resource, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Nissi Varki
- Department of Pathology, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, USA
| | - Scott Herdman
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Maripat Corr
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA
| | - Nicholas J G Webster
- Division of Endocrinology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, USA
- Medical Research Service, Veteran Affairs San Diego Healthcare System, San Diego, CA, USA
| | - Eyal Raz
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA.
| | - Samuel Bertin
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0663, USA.
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In vivo induction of activin A-producing alveolar macrophages supports the progression of lung cell carcinoma. Nat Commun 2023; 14:143. [PMID: 36650150 PMCID: PMC9845242 DOI: 10.1038/s41467-022-35701-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 12/16/2022] [Indexed: 01/19/2023] Open
Abstract
Alveolar macrophages (AMs) are crucial for maintaining normal lung function. They are abundant in lung cancer tissues, but their pathophysiological significance remains unknown. Here we show, using an orthotopic murine lung cancer model and human carcinoma samples, that AMs support cancer cell proliferation and thus contribute to unfavourable outcome. Inhibin beta A (INHBA) expression is upregulated in AMs under tumor-bearing conditions, leading to the secretion of activin A, a homodimer of INHBA. Accordingly, follistatin, an antagonist of activin A is able to inhibit lung cancer cell proliferation. Single-cell RNA sequence analysis identifies a characteristic subset of AMs specifically induced in the tumor environment that are abundant in INHBA, and distinct from INHBA-expressing AMs in normal lungs. Moreover, postnatal deletion of INHBA/activin A could limit tumor growth in experimental models. Collectively, our findings demonstrate the critical pathological role of activin A-producing AMs in tumorigenesis, and provides means to clearly distinguish them from their healthy counterparts.
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Orally administered MOTS-c analogue ameliorates dextran sulfate sodium-induced colitis by inhibiting inflammation and apoptosis. Eur J Pharmacol 2023; 939:175469. [PMID: 36528071 DOI: 10.1016/j.ejphar.2022.175469] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 12/14/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disorder of the gastrointestinal tract (GI). Currently, the treatment options for IBD are limited. It has been reported that a novel bioactive mitochondrial-derived peptide (MOTS-c) encoded in the mitochondrial 12S rRNA, suppresses inflammatory response by enhancing the phagocytosis of macrophages. The aim of this study was to investigate the protective effects of MOTS-c against dextran sulfate sodium (DSS)-induced colitis. The results showed that intraperitoneal (i.p.) administration of MOTS-c significantly ameliorated the symptoms of DSS-induced experimental colitis, such as body weight loss, colon length shortening, diarrhea, and histological damage. MOTS-c down-regulated the expression of pro-inflammatory cytokines, decreased the plasma levels of myeloperoxidase, and inhibited the activation of macrophages and recruitment of neutrophils. Moreover, treatment with MOTS-c exhibited anti-apoptotic effects and significantly suppressed the phosphorylation of AMPKα1/2, ERK, and JNK. Notably, oral administration of MOTS-c did not result in any significant improvements. Screening of cell penetrating peptides was performed, (PRR)5 was linked to the C-terminus of MOTS-c through a linker to synthesize a new molecule (termed MP) with better penetration into the colon epithelium. In vitro experiments revealed the longer half-life of MP than MOTS-c, and in vivo experiments showed that oral administration of MP significantly ameliorated DSS-induced colitis. CONCLUSION: The present results demonstrate a protective role of MOTS-c in experimental IBD.
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Moerland JA, Leal AS, Lockwood B, Demireva EY, Xie H, Krieger-Burke T, Liby KT. The Triterpenoid CDDO-Methyl Ester Redirects Macrophage Polarization and Reduces Lung Tumor Burden in a Nrf2-Dependent Manner. Antioxidants (Basel) 2023; 12:116. [PMID: 36670978 PMCID: PMC9854457 DOI: 10.3390/antiox12010116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023] Open
Abstract
The NRF2/KEAP1 pathway protects healthy cells from malignant transformation and maintains cellular homeostasis. Up to 30% of human lung tumors gain constitutive NRF2 activity which contributes to cancer cell survival and chemoresistance, but the effects of NRF2 activation in immune cells within the tumor microenvironment are underexplored. Macrophages can promote cancer progression or regression depending on context, and NRF2 activation affects macrophage activity. The NRF2 activator CDDO-Methyl ester (CDDO-Me or bardoxolone methyl) reprogrammed Nrf2 wild-type (WT) tumor-educated bone marrow-derived macrophages (TE-BMDMs) from a tumor-promoting to a tumor-inhibiting phenotype, marked by an increase in M1 markers TNFα, IL-6, and MHC-II and a decrease in the tumor-promoting factors VEGF, CCL2, and CD206. No changes were observed in Nrf2 knockout (KO) TE-BMDMs. CDDO-Me decreased tumor burden (p < 0.001) and improved pathological grade (p < 0.05) in WT but not Nrf2 KO A/J mice. Tumor burden in Nrf2 KO mice was 4.6-fold higher (p < 0.001) than in WT mice, irrespective of treatment. CDDO-Me increased the number of lung-infiltrating macrophages in WT mice but lowered CD206 expression in these cells (p < 0.0001). In summary, Nrf2 KO exacerbates lung tumorigenesis in A/J mice, and CDDO-Me promotes an Nrf2-dependent, anti-cancer macrophage phenotype.
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Affiliation(s)
- Jessica A. Moerland
- Department of Pharmacology & Toxicology, College of Osteopathic Medicine, Michigan State University, B430 Life Science Building, 1355 Bogue Street, East Lansing, MI 48824, USA
| | - Ana S. Leal
- Department of Pharmacology & Toxicology, College of Osteopathic Medicine, Michigan State University, B430 Life Science Building, 1355 Bogue Street, East Lansing, MI 48824, USA
| | - Beth Lockwood
- Department of Pharmacology & Toxicology, College of Osteopathic Medicine, Michigan State University, B430 Life Science Building, 1355 Bogue Street, East Lansing, MI 48824, USA
| | - Elena Y. Demireva
- Transgenic and Genome Editing Facility, Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Huirong Xie
- Transgenic and Genome Editing Facility, Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI 48824, USA
| | | | - Karen T. Liby
- Department of Pharmacology & Toxicology, College of Osteopathic Medicine, Michigan State University, B430 Life Science Building, 1355 Bogue Street, East Lansing, MI 48824, USA
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Chakraborty A, Dharmaraj S, Truong N, Pearson RM. Excipient-Free Ionizable Polyester Nanoparticles for Lung-Selective and Innate Immune Cell Plasmid DNA and mRNA Transfection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:56440-56453. [PMID: 36525379 PMCID: PMC9872050 DOI: 10.1021/acsami.2c14424] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Extrahepatic nucleic acid delivery using polymers typically requires the synthesis and purification of custom monomers, post-synthetic modifications, and incorporation of additional excipients to augment their stability, endosomal escape, and in vivo effectiveness. Here, we report the development of a single-component and excipient-free, polyester-based nucleic acid delivery nanoparticle platform comprising ionizable N-methyldiethanolamine (MDET) and various hydrophobic alkyl diols (Cp) that achieves lung-selective nucleic acid transfection in vivo. PolyMDET and polyMDET-Cp polyplexes displayed high serum and enzymatic stability, while delivering pDNA or mRNA to "hard-to-transfect" innate immune cells. PolyMDET-C4 and polyMDET-C6 mediated high protein expression in lung alveolar macrophages and dendritic cells without inducing tissue damage or systemic inflammatory responses. Improved strategies using readily available starting materials to produce a simple, excipient-free, non-viral nucleic acid delivery platform with lung-selective and innate immune cell tropism has the potential to expedite clinical deployment of polymer-based genetic medicines.
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Affiliation(s)
- Atanu Chakraborty
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 N. Pine Street, Baltimore, Maryland21201, United States
| | - Shruti Dharmaraj
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 N. Pine Street, Baltimore, Maryland21201, United States
| | - Nhu Truong
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 N. Pine Street, Baltimore, Maryland21201, United States
| | - Ryan M Pearson
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 N. Pine Street, Baltimore, Maryland21201, United States
- Department of Microbiology and Immunology, University of Maryland School of Medicine, 685 W. Baltimore Street, Baltimore, Maryland21201, United States
- Program in Molecular Medicine, University of Maryland School of Medicine, 655 W. Baltimore Street, Baltimore, Maryland21201, United States
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, Maryland21201, United States
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Draijer C, Florez-Sampedro L, Reker-Smit C, Post E, van Dijk F, Melgert BN. Explaining the polarized macrophage pool during murine allergic lung inflammation. Front Immunol 2022; 13:1056477. [PMID: 36605195 PMCID: PMC9807907 DOI: 10.3389/fimmu.2022.1056477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Differentially polarized macrophages, especially YM1+ and MHCII+ macrophages, play an important role in asthma development. The origin of these polarized macrophages has not been elucidated yet. We therefore aimed to investigate how proliferation, monocyte recruitment, and/or switching of polarization states contribute to this specific pool of polarized interstitial and alveolar macrophages during development of house dust mite (HDM)-induced allergic lung inflammation in mice. Methods Male and female mice were first treated intranasally with PKH26 to label lung-resident macrophages and were then exposed to either HDM or phosphate-buffered saline (PBS) for two weeks. Different myeloid immune cell types were quantified in lung tissue and blood using flow cytometry. Results We found that macrophage polarization only starts up in the second week of HDM exposures. Before this happened, unpolarized alveolar and interstitial macrophages transiently increased in HDM-exposed mice. This transient increase was mostly local proliferation of alveolar macrophages, while interstitial macrophages also contained unlabeled macrophages suggesting monocyte contribution. After two weeks of exposures, the number of interstitial and alveolar macrophages was similar between HDM and PBS-exposed mice, but the distribution of polarization states was remarkably different. HDM-exposed mice selectively developed YM1+ alveolar macrophages and MHCII-hi interstitial macrophages while nonpolarized macrophages were lost compared to PBS-exposed mice. Discussion In this HDM model we have shown that development of a polarized macrophage pool during allergic inflammation is first dependent on proliferation of nonpolarized tissue-resident macrophages with some help of infiltrating unlabeled cells, presumably circulating monocytes. These nonpolarized macrophages then acquire their polarized phenotype by upregulating YM1 on alveolar macrophages and MHCII on interstitial macrophages. This novel information will help us to better understand the role of macrophages in asthma and designing therapeutic strategies targeting macrophage functions.
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Affiliation(s)
- Christina Draijer
- GRIAC- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Laura Florez-Sampedro
- GRIAC- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands,Department of Chemical and Pharmaceutical Biology, University of Groningen, Groningen, Netherlands,Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
| | - Catharina Reker-Smit
- Department of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, Netherlands
| | - Eduard Post
- Department of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, Netherlands
| | - Fransien van Dijk
- GRIAC- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands,Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands
| | - Barbro N. Melgert
- GRIAC- Groningen Research Institute for Asthma and COPD, University Medical Center Groningen, University of Groningen, Groningen, Netherlands,Department of Molecular Pharmacology, University of Groningen, Groningen, Netherlands,*Correspondence: Barbro N. Melgert,
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Liu KW, Grau MS, Jones JT, Wang X, Vesely EM, James MR, Gutierrez-Perez C, Cramer RA, Obar JJ. Postinfluenza Environment Reduces Aspergillus fumigatus Conidium Clearance and Facilitates Invasive Aspergillosis In Vivo. mBio 2022; 13:e0285422. [PMID: 36377895 PMCID: PMC9765436 DOI: 10.1128/mbio.02854-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
Aspergillus fumigatus is a human fungal pathogen that is most often avirulent in immunecompetent individuals because the innate immune system is efficient at eliminating fungal conidia. However, recent clinical observations have shown that severe influenza A virus (IAV) infection can lead to secondary A. fumigatus infections with high mortality. Little is currently known about how IAV infection alters the innate antifungal immune response. Here, we established a murine model of IAV-induced A. fumigatus (IAV-Af) superinfection by inoculating mice with IAV followed 6 days later by A. fumigatus conidia challenge. We observed increased mortality in the IAV-Af-superinfected mice compared to mice challenged with either IAV or A. fumigatus alone. A. fumigatus conidia were able to germinate and establish a biofilm in the lungs of the IAV-Af superinfection group, which was not seen following fungal challenge alone. While we did not observe any differences in inflammatory cell recruitment in the IAV-Af superinfection group compared to single-infection controls, we observed defects in Aspergillus conidial uptake and killing by both neutrophils and monocytes after IAV infection. pHrodo Green zymosan bioparticle (pHrodo-zymosan) and CM-H2DCFDA [5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate] staining, indicators of phagolysosome maturation and reactive oxygen species (ROS) production, respectively, revealed that the fungal killing defect was due in part to reduced phagolysosome maturation. Collectively, our data demonstrate that the ability of neutrophils and monocytes to kill and clear Aspergillus conidia is strongly reduced in the pulmonary environment of an IAV-infected lung, which leads to invasive pulmonary aspergillosis and increased overall mortality in our mouse model, recapitulating what is observed clinically in humans. IMPORTANCE Influenza A virus (IAV) is a common respiratory virus that causes seasonal illness in humans, but can cause pandemics and severe infection in certain patients. Since the emergence of the 2009 H1N1 pandemic strains, there has been an increase in clinical reports of IAV-infected patients in the intensive care unit (ICU) developing secondary pulmonary aspergillosis. These cases of flu-Aspergillus superinfections are associated with worse clinical outcomes than secondary bacterial infections in the setting of IAV. To date, we have a limited understanding of the cause(s) of secondary fungal infections in immunocompetent hosts. IAV-induced modulation of cytokine production and innate immune cellular function generates a unique immune environment in the lung, which could make the host vulnerable to a secondary fungal infection. Our work shows that defects in phagolysosome maturation in neutrophils and monocytes after IAV infection impair the ability of these cells to kill A. fumigatus, thus leading to increased fungal germination and growth and subsequent invasive aspergillosis. Our work lays a foundation for future mechanistic studies examining the exact immune modulatory events occurring in the respiratory tract after viral infection leading to secondary fungal infections.
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Affiliation(s)
- Ko-Wei Liu
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Madeleine S. Grau
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Jane T. Jones
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Xi Wang
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Elisa M. Vesely
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Matthew R. James
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Cecilia Gutierrez-Perez
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Robert A. Cramer
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Joshua J. Obar
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
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Öz HH, Cheng EC, Di Pietro C, Tebaldi T, Biancon G, Zeiss C, Zhang PX, Huang PH, Esquibies SS, Britto CJ, Schupp JC, Murray TS, Halene S, Krause DS, Egan ME, Bruscia EM. Recruited monocytes/macrophages drive pulmonary neutrophilic inflammation and irreversible lung tissue remodeling in cystic fibrosis. Cell Rep 2022; 41:111797. [PMID: 36516754 PMCID: PMC9833830 DOI: 10.1016/j.celrep.2022.111797] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 09/30/2022] [Accepted: 11/16/2022] [Indexed: 12/15/2022] Open
Abstract
Persistent neutrophil-dominated lung inflammation contributes to lung damage in cystic fibrosis (CF). However, the mechanisms that drive persistent lung neutrophilia and tissue deterioration in CF are not well characterized. Starting from the observation that, in patients with CF, c-c motif chemokine receptor 2 (CCR2)+ monocytes/macrophages are abundant in the lungs, we investigate the interplay between monocytes/macrophages and neutrophils in perpetuating lung tissue damage in CF. Here we show that CCR2+ monocytes in murine CF lungs drive pathogenic transforming growth factor β (TGF-β) signaling and sustain a pro-inflammatory environment by facilitating neutrophil recruitment. Targeting CCR2 to lower the numbers of monocytes in CF lungs ameliorates neutrophil inflammation and pathogenic TGF-β signaling and prevents lung tissue damage. This study identifies CCR2+ monocytes as a neglected contributor to the pathogenesis of CF lung disease and as a therapeutic target for patients with CF, for whom lung hyperinflammation and tissue damage remain an issue despite recent advances in CF transmembrane conductance regulator (CFTR)-specific therapeutic agents.
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Affiliation(s)
- Hasan H Öz
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Ee-Chun Cheng
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | | | - Toma Tebaldi
- Department of Hematology, Yale School of Medicine, New Haven, CT, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA; Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - Giulia Biancon
- Department of Hematology, Yale School of Medicine, New Haven, CT, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA
| | - Caroline Zeiss
- Department of Comparative Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Ping-Xia Zhang
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA; Department of Laboratory Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Pamela H Huang
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Sofia S Esquibies
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Clemente J Britto
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Jonas C Schupp
- Department of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA; Department of Respiratory Medicine, Hannover Medical School and Biomedical Research in End-stage and Obstructive Lung Disease Hannover, German Lung Research Center (DZL), Hannover, Germany
| | - Thomas S Murray
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Stephanie Halene
- Department of Hematology, Yale School of Medicine, New Haven, CT, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA
| | - Diane S Krause
- Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA; Department of Laboratory Medicine, Yale School of Medicine, New Haven, CT, USA; Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - Marie E Egan
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA; Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT, USA
| | - Emanuela M Bruscia
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA.
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van Gijsel-Bonnello M, Darling NJ, Tanaka T, Di Carmine S, Marchesi F, Thomson S, Clark K, Kurowska-Stolarska M, McSorley HJ, Cohen P, Arthur JSC. Salt-inducible kinase 2 regulates fibrosis during bleomycin-induced lung injury. J Biol Chem 2022; 298:102644. [PMID: 36309093 PMCID: PMC9706632 DOI: 10.1016/j.jbc.2022.102644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/20/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022] Open
Abstract
Idiopathic pulmonary fibrosis is a progressive and normally fatal disease with limited treatment options. The tyrosine kinase inhibitor nintedanib has recently been approved for the treatment of idiopathic pulmonary fibrosis, and its effectiveness has been linked to its ability to inhibit a number of receptor tyrosine kinases including the platelet-derived growth factor, vascular endothelial growth factor, and fibroblast growth factor receptors. We show here that nintedanib also inhibits salt-inducible kinase 2 (SIK2), with a similar IC50 to its reported tyrosine kinase targets. Nintedanib also inhibited the related kinases SIK1 and SIK3, although with 12-fold and 72-fold higher IC50s, respectively. To investigate if the inhibition of SIK2 may contribute to the effectiveness of nintedanib in treating lung fibrosis, mice with kinase-inactive knockin mutations were tested using a model of bleomycin-induced lung fibrosis. We found that loss of SIK2 activity protects against bleomycin-induced fibrosis, as judged by collagen deposition and histological scoring. Loss of both SIK1 and SIK2 activity had a similar effect to loss of SIK2 activity. Total SIK3 knockout mice have a developmental phenotype making them unsuitable for analysis in this model; however, we determined that conditional knockout of SIK3 in the immune system did not affect bleomycin-induced lung fibrosis. Together, these results suggest that SIK2 is a potential drug target for the treatment of lung fibrosis.
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Affiliation(s)
- Manuel van Gijsel-Bonnello
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, United Kingdom; MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Nicola J Darling
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Takashi Tanaka
- Research Centre of Specialty, Ono Pharmaceutical Co Ltd, Osaka, Japan
| | - Samuele Di Carmine
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Francesco Marchesi
- School of Veterinary Medicine, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Sarah Thomson
- Biological Services, University of Dundee, Dundee, United Kingdom
| | - Kristopher Clark
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Mariola Kurowska-Stolarska
- Institute of Infection, Immunity and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Henry J McSorley
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Philip Cohen
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - J Simon C Arthur
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, United Kingdom.
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Boe DM, Hulsebus HJ, Najarro KM, Mullen JE, Kim H, Tan AC, McMahan RH, Kovacs EJ. Advanced age is associated with changes in alveolar macrophages and their responses to the stress of traumatic injury. J Leukoc Biol 2022; 112:1371-1386. [PMID: 36120937 PMCID: PMC10150914 DOI: 10.1002/jlb.3hi0620-399rr] [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: 06/18/2020] [Revised: 08/14/2022] [Indexed: 01/04/2023] Open
Abstract
Alveolar macrophages (AMs) are tissue-resident cells of the lower airways that perform many homeostatic functions critical for pulmonary health and protection against pathogens. However, little is known about the factors that shape AMs during healthy aging. In these studies, we sought to characterize age-related changes in AM phenotype, function, and responses to a physiologic stressor, that is, distal injury. Age was associated with a wide range of changes in cell surface receptor and gene expression by AMs, reflecting a unique alternatively activated phenotype. AMs from aged mice also exhibited markers of cellular senescence along with down-regulation of genes involved in growth and cell cycle pathways relative to young controls. Furthermore, AMs from aged mice showed a stunted transcriptional response to distal injury compared with AMs from young mice. Many changes were found to involve glucocorticoid-regulated genes, and corticosteroid treatment of primary AMs ex vivo revealed diminished transcriptional responses in cells from aged animals. These results demonstrate that there is a complex age-dependent AM phenotype associated with dysregulated stress hormone signaling that may interfere with AM responses to physiologic stressors and could contribute to AM dysfunction and the decline of pulmonary immunity during healthy aging.
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Affiliation(s)
- Devin M. Boe
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Holly J. Hulsebus
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kevin M. Najarro
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Juliet E. Mullen
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Hyunmin Kim
- Department of Biostatistics and Bioinformatics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Aik Choon Tan
- Department of Biostatistics and Bioinformatics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Rachel H. McMahan
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Elizabeth J. Kovacs
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Kulle A, Thanabalasuriar A, Cohen TS, Szydlowska M. Resident macrophages of the lung and liver: The guardians of our tissues. Front Immunol 2022; 13:1029085. [PMID: 36532044 PMCID: PMC9750759 DOI: 10.3389/fimmu.2022.1029085] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/09/2022] [Indexed: 12/05/2022] Open
Abstract
Resident macrophages play a unique role in the maintenance of tissue function. As phagocytes, they are an essential first line defenders against pathogens and much of the initial characterization of these cells was focused on their interaction with viral and bacterial pathogens. However, these cells are increasingly recognized as contributing to more than just host defense. Through cytokine production, receptor engagement and gap junction communication resident macrophages tune tissue inflammatory tone, influence adaptive immune cell phenotype and regulate tissue structure and function. This review highlights resident macrophages in the liver and lung as they hold unique roles in the maintenance of the interface between the circulatory system and the external environment. As such, we detail the developmental origin of these cells, their contribution to host defense and the array of tools these cells use to regulate tissue homeostasis.
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Affiliation(s)
- Amelia Kulle
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
| | | | - Taylor S. Cohen
- Late Stage Development, Vaccines and Immune Therapies (V&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
| | - Marta Szydlowska
- Bacteriology and Vaccine Discovery, Research and Early Development, Vaccines and Immune Therapies (V&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
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129
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Mackin SR, Desai P, Whitener BM, Karl CE, Liu M, Baric RS, Edwards DK, Chicz TM, McNamara RP, Alter G, Diamond MS. Fcγ receptor-dependent antibody effector functions are required for vaccine protection against infection by antigenic variants of SARS-CoV-2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.11.27.518117. [PMID: 36482975 PMCID: PMC9727771 DOI: 10.1101/2022.11.27.518117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Emerging SARS-CoV-2 variants with antigenic changes in the spike protein are neutralized less efficiently by serum antibodies elicited by legacy vaccines against the ancestral Wuhan-1 virus. Nonetheless, these vaccines, including mRNA-1273 and BNT162b2, retained their ability to protect against severe disease and death, suggesting that other aspects of immunity control infection in the lung. Although vaccine-elicited antibodies can bind Fc gamma receptors (FcγRs) and mediate effector functions against SARS-CoV-2 variants, and this property correlates with improved clinical COVID-19 outcome, a causal relationship between Fc effector functions and vaccine-mediated protection against infection has not been established. Here, using passive and active immunization approaches in wild-type and Fc-gamma receptor (FcγR) KO mice, we determined the requirement for Fc effector functions to protect against SARS-CoV-2 infection. The antiviral activity of passively transferred immune serum was lost against multiple SARS-CoV-2 strains in mice lacking expression of activating FcγRs, especially murine FcγR III (CD16), or depleted of alveolar macrophages. After immunization with the preclinical mRNA-1273 vaccine, protection against Omicron BA.5 infection in the respiratory tract also was lost in mice lacking FcγR III. Our passive and active immunization studies in mice suggest that Fc-FcγR engagement and alveolar macrophages are required for vaccine-induced antibody-mediated protection against infection by antigenically changed SARS-CoV-2 variants, including Omicron strains.
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Affiliation(s)
- Samantha R. Mackin
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
- Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO
| | - Pritesh Desai
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Bradley M. Whitener
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Courtney E. Karl
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO
| | - Meizi Liu
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Ralph S. Baric
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC
| | | | | | | | - Galit Alter
- Moderna, Inc., Cambridge MA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA
- Andrew M. and Jane M. Bursky the Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO
| | - Michael S. Diamond
- Department of Medicine, Washington University School of Medicine, St. Louis, MO
- Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO
- Andrew M. and Jane M. Bursky the Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO
- Center for Vaccines and Immunity to Microbial Pathogens, Washington University School of Medicine, St. Louis, MO
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130
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Alveolar macrophage metabolic programming via a C-type lectin receptor protects against lipo-toxicity and cell death. Nat Commun 2022; 13:7272. [PMID: 36433992 PMCID: PMC9700784 DOI: 10.1038/s41467-022-34935-w] [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: 09/22/2021] [Accepted: 11/12/2022] [Indexed: 11/27/2022] Open
Abstract
Alveolar macrophages (AM) hold lung homeostasis intact. In addition to the defense against inhaled pathogens and deleterious inflammation, AM also maintain pulmonary surfactant homeostasis, a vital lung function that prevents pulmonary alveolar proteinosis. Signals transmitted between AM and pneumocytes of the pulmonary niche coordinate these specialized functions. However, the mechanisms that guide the metabolic homeostasis of AM remain largely elusive. We show that the NK cell-associated receptor, NKR-P1B, is expressed by AM and is essential for metabolic programming. Nkrp1b-/- mice are vulnerable to pneumococcal infection due to an age-dependent collapse in the number of AM and the formation of lipid-laden AM. The AM of Nkrp1b-/- mice show increased uptake but defective metabolism of surfactant lipids. We identify a physical relay between AM and alveolar type-II pneumocytes that is dependent on pneumocyte Clr-g expression. These findings implicate the NKR-P1B:Clr-g signaling axis in AM-pneumocyte communication as being important for maintaining metabolism in AM.
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131
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Mabille D, Dirkx L, Thys S, Vermeersch M, Montenye D, Govaerts M, Hendrickx S, Takac P, Van Weyenbergh J, Pintelon I, Delputte P, Maes L, Pérez-Morga D, Timmermans JP, Caljon G. Impact of pulmonary African trypanosomes on the immunology and function of the lung. Nat Commun 2022; 13:7083. [PMID: 36400767 PMCID: PMC9674601 DOI: 10.1038/s41467-022-34757-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022] Open
Abstract
Approximately 20% of sleeping sickness patients exhibit respiratory complications, however, with a largely unknown role of the parasite. Here we show that tsetse fly-transmitted Trypanosoma brucei parasites rapidly and permanently colonize the lungs and occupy the extravascular spaces surrounding the blood vessels of the alveoli and bronchi. They are present as nests of multiplying parasites exhibiting close interactions with collagen and active secretion of extracellular vesicles. The local immune response shows a substantial increase of monocytes, macrophages, dendritic cells and γδ and activated αβ T cells and a later influx of neutrophils. Interestingly, parasite presence results in a significant reduction of B cells, eosinophils and natural killer cells. T. brucei infected mice show no infection-associated pulmonary dysfunction, mirroring the limited pulmonary clinical complications during sleeping sickness. However, the substantial reduction of the various immune cells may render individuals more susceptible to opportunistic infections, as evident by a co-infection experiment with respiratory syncytial virus. Collectively, these observations provide insights into a largely overlooked target organ, and may trigger new diagnostic and supportive therapeutic approaches for sleeping sickness.
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Affiliation(s)
- Dorien Mabille
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - Laura Dirkx
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - Sofie Thys
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - Marjorie Vermeersch
- Center for Microscopy and Molecular Imaging, Université libre de Bruxelles, Gosselies, Belgium
- Laboratory of Molecular Parasitology, IBMM, Université libre de Bruxelles, Gosselies, Belgium
| | - Daniel Montenye
- Center for Microscopy and Molecular Imaging, Université libre de Bruxelles, Gosselies, Belgium
- Laboratory of Molecular Parasitology, IBMM, Université libre de Bruxelles, Gosselies, Belgium
| | - Matthias Govaerts
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - Sarah Hendrickx
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - Peter Takac
- Institute of Zoology, Slovak Academy of Sciences, 84506, Bratislava, Slovakia
- Scientica, Ltd., 83106, Bratislava, Slovakia
| | - Johan Van Weyenbergh
- Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute of Medical Research, KU Leuven, Leuven, Belgium
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - Peter Delputte
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium
| | - David Pérez-Morga
- Center for Microscopy and Molecular Imaging, Université libre de Bruxelles, Gosselies, Belgium
- Laboratory of Molecular Parasitology, IBMM, Université libre de Bruxelles, Gosselies, Belgium
| | - Jean-Pierre Timmermans
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene, Infla-Med Centre of Excellence, University of Antwerp, Wilrijk, Belgium.
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Wang Y, Li M, Wang S, Ma J, Liu Y, Guo H, Gao J, Yao L, He B, Hu L, Qu G, Jiang G. Deciphering the Effects of 2D Black Phosphorus on Disrupted Hematopoiesis and Pulmonary Immune Homeostasis Using a Developed Flow Cytometry Method. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:15869-15881. [PMID: 36227752 PMCID: PMC9671123 DOI: 10.1021/acs.est.2c03675] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 05/28/2023]
Abstract
As an emerging two-dimensional nanomaterial with promising prospects, mono- or few-layer black phosphorus (BP) is potentially toxic to humans. We investigated the effects of two types of BPs on adult male mice through intratracheal instillation. Using the flow cytometry method, the generation, migration, and recruitment of immune cells in different organs have been characterized on days 1, 7, 14, and 21 post-exposure. Compared with small BP (S-BP, lateral size at ∼188 nm), large BP (L-BP, lateral size at ∼326 nm) induced a stronger stress lymphopoiesis and B cell infiltration into the alveolar sac. More importantly, L-BP dramatically increased peripheral neutrophil (NE) counts up to 1.9-fold on day 21 post-exposure. Decreased expression of the CXCR4 on NEs, an important regulator of NE retention in the bone marrow, explained the increased NE release into the circulation induced by L-BP. Therefore, BP triggers systemic inflammation via the disruption of both the generation and migration of inflammatory immune cells.
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Affiliation(s)
- Yuanyuan Wang
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Li
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- Research
Center for Analytical Sciences, Department of Chemistry, College of
Sciences, Northeastern University, Shenyang 110819, China
| | - Shunhao Wang
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Junjie Ma
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- Research
Center for Analytical Sciences, Department of Chemistry, College of
Sciences, Northeastern University, Shenyang 110819, China
| | - Yaquan Liu
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Guo
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Gao
- School
of Environmental, Hangzhou Institute for
Advanced Study, UCAS, Hangzhou 310000, China
| | - Linlin Yao
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Bin He
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- School
of Environmental, Hangzhou Institute for
Advanced Study, UCAS, Hangzhou 310000, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Ligang Hu
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- School
of Environmental, Hangzhou Institute for
Advanced Study, UCAS, Hangzhou 310000, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
- Institute
of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Guangbo Qu
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- School
of Environmental, Hangzhou Institute for
Advanced Study, UCAS, Hangzhou 310000, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
- Institute
of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Guibin Jiang
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- School
of Environmental, Hangzhou Institute for
Advanced Study, UCAS, Hangzhou 310000, China
- College
of Resources and Environment, University
of Chinese Academy of Sciences, Beijing 100049, China
- Institute
of Environment and Health, Jianghan University, Wuhan 430056, China
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133
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Pilling D, Sahlberg K, Chen W, Gomer RH. Changes in lung sialidases in male and female mice after bleomycin aspiration. Exp Lung Res 2022; 48:291-304. [PMID: 36382835 PMCID: PMC10084762 DOI: 10.1080/01902148.2022.2144548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 11/17/2022]
Abstract
Aim of the study: Sialidases, also called neuraminidases, are enzymes that cleave terminal sialic acids from glycoconjugates. In humans and mice, lung fibrosis is associated with desialylation of glycoconjugates and upregulation of sialidases. There are four mammalian sialidases, and it is unclear when the four mammalian sialidases are elevated over the course of inflammatory and fibrotic responses, whether tissue resident and inflammatory cells express different sialidases, and if sialidases are differentially expressed in male and females. Materials and Methods: To determine the time course of sialidase expression and the identity of sialidase expressing cells, we used the bleomycin model of pulmonary fibrosis in mice to examine levels of sialidases during inflammation (days 3 - 10) and fibrosis (days 10 - 21). Results: Bleomycin aspiration increased sialidase NEU1 at days 14 and 21 in male mice and day 10 in female mice. NEU2 levels increased at day 7 in male and day 10 in female mice. NEU3 appears to have a biphasic response in male mice with increased levels at day 7 and then at days 14 and 21, whereas in female mice NEU3 levels increased over 21 days. In control mice, the sialidases were mainly expressed by EpCAM positive epithelial cells, but after bleomycin, epithelial cells, CD45 positive immune cells, and alveolar cells expressed NEU1, NEU2, and NEU3. Sialidase expression was higher in male compared to female mice. There was little expression of NEU4 in murine lung tissue. Conclusions: These results suggest that sialidases are dynamically expressed following bleomycin, that sialidases are differentially expressed in male and females, and that of the four sialidases only NEU3 upregulation is associated with fibrosis in both male and female mice.
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Kim S, Shukla RK, Yu H, Baek A, Cressman SG, Golconda S, Lee GE, Choi H, Reneau JC, Wang Z, Huang CA, Liyanage NPM, Kim S. CD3e-immunotoxin spares CD62L lo Tregs and reshapes organ-specific T-cell composition by preferentially depleting CD3e hi T cells. Front Immunol 2022; 13:1011190. [PMID: 36389741 PMCID: PMC9643874 DOI: 10.3389/fimmu.2022.1011190] [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: 08/03/2022] [Accepted: 10/04/2022] [Indexed: 02/03/2023] Open
Abstract
CD3-epsilon(CD3e) immunotoxins (IT), a promising precision reagent for various clinical conditions requiring effective depletion of T cells, often shows limited treatment efficacy for largely unknown reasons. Tissue-resident T cells that persist in peripheral tissues have been shown to play pivotal roles in local and systemic immunity, as well as transplant rejection, autoimmunity and cancers. The impact of CD3e-IT treatment on these local cells, however, remains poorly understood. Here, using a new murine testing model, we demonstrate a substantial enrichment of tissue-resident Foxp3+ Tregs following CD3e-IT treatment. Differential surface expression of CD3e among T-cell subsets appears to be a main driver of Treg enrichment in CD3e-IT treatment. The surviving Tregs in CD3e-IT-treated mice were mostly the CD3edimCD62Llo effector phenotype, but the levels of this phenotype markedly varied among different lymphoid and nonlymphoid organs. We also found notable variations in surface CD3e levels among tissue-resident T cells of different organs, and these variations drive CD3e-IT to uniquely reshape T-cell compositions in local organs. The functions of organs and anatomic locations (lymph nodes) also affected the efficacy of CD3e-IT. The multi-organ pharmacodynamics of CD3e-IT and potential treatment resistance mechanisms identified in this study may generate new opportunities to further improve this promising treatment.
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Affiliation(s)
- Shihyoung Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Rajni Kant Shukla
- Department of Microbial Immunity and Infection, The Ohio State University, Columbus, OH, United States
| | - Hannah Yu
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Alice Baek
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Sophie G. Cressman
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Sarah Golconda
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Ga-Eun Lee
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Hyewon Choi
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - John C. Reneau
- Division of Hematology, The Ohio State University, Columbus, OH, United States
| | - Zhirui Wang
- Department of Surgery, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, United States
| | - Christene A. Huang
- Department of Surgery, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, United States
| | - Namal P. M. Liyanage
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States,Department of Microbial Immunity and Infection, The Ohio State University, Columbus, OH, United States,Infectious Disease Institute, The Ohio State University, Columbus, OH, United States,*Correspondence: Namal P. M. Liyanage, ; Sanggu Kim,
| | - Sanggu Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States,Infectious Disease Institute, The Ohio State University, Columbus, OH, United States,*Correspondence: Namal P. M. Liyanage, ; Sanggu Kim,
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Remion E, Gal J, Chaouch S, Rodrigues J, Lhermitte-Vallarino N, Alonso J, Kohl L, Hübner MP, Fercoq F, Martin C. Unbalanced Arginine pathway and altered maturation of pleural macrophages in Th2-deficient mice during Litomosoides sigmodontis filarial infection. Front Immunol 2022; 13:866373. [PMID: 36353644 PMCID: PMC9637854 DOI: 10.3389/fimmu.2022.866373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 09/30/2022] [Indexed: 11/21/2022] Open
Abstract
Filarial parasites are tissue dwelling worms transmitted by hematophagous vectors. Understanding the mechanisms regulating microfilariae (the parasite offspring) development is a prerequisite for controlling transmission in filarial infections. Th2 immune responses are key for building efficient anti-parasite responses but have been shown to also lead to detrimental tissue damage in the presence of microfilariae. Litomosoides sigmodontis, a rodent filaria residing in the pleural cavity was therefore used to characterize pleuropulmonary pathology and associated immune responses in wild-type and Th2 deficient mice. Wild-type and Th2-deficient mice (Il-4rα-/-/Il-5-/- ) were infected with L. sigmodontis and parasite outcome was analyzed during the patent phase (when microfilariae are in the general circulation). Pleuropulmonary manifestations were investigated and pleural and bronchoalveolar cells were characterized by RNA analysis, imaging and/or flow cytometry focusing on macrophages. Il-4rα-/-/Il-5-/- mice were hypermicrofilaremic and showed an enhanced filarial survival but also displayed a drastic reduction of microfilaria-driven pleural cavity pathologies. In parallel, pleural macrophages from Il-4rα-/-/Il-5-/- mice lacked expression of prototypical alternative activation markers RELMα and Chil3 and showed an altered balance of some markers of the arginine metabolic pathway. In addition, monocytes-derived F4/80intermediate macrophages from infected Il-4rα-/-/Il-5-/- mice failed to mature into resident F4/80high large macrophages. Altogether these data emphasize that the presence of both microfilariae and IL-4R/IL-5 signaling are critical in the development of the pathology and in the phenotype of macrophages. In Il-4rα-/-/Il-5-/- mice, the balance is in favor of parasite development while limiting the pathology associated with the host immune response.
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Affiliation(s)
- Estelle Remion
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Joséphine Gal
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Soraya Chaouch
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Jules Rodrigues
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Nathaly Lhermitte-Vallarino
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Joy Alonso
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Linda Kohl
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Marc P. Hübner
- Institute for Medical Microbiology, Immunology & Parasitology (IMMIP), University Hospital of Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
| | - Frédéric Fercoq
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
| | - Coralie Martin
- Unit Communication Molecules and Adaptation of Micro-organisms (MCAM, UMR 7245), Team Parasites and Free Protistes, Muséum National d’Histoire Naturelle, CNRS; CP52, 61 rue Buffon, 75005 Paris, France
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Hernandez A, Zhou J, Bohannon JK, McBride MA, Gibson-Corley KN, Patil NK, Owen AM, Burelbach KR, Sherwood ER. INTRAPULMONARY TREATMENT WITH A NOVEL TLR4 AGONIST CONFERS PROTECTION AGAINST KLEBSIELLA PNEUMONIA. Shock 2022; 58:295-303. [PMID: 36018281 PMCID: PMC9647733 DOI: 10.1097/shk.0000000000001977] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT Objectives: Nosocomial pneumonia is a common complication in critically ill patients. The goal of this study was to examine the efficacy of the Toll-like receptor 4 agonist 3-deacyl phosphorylated hexacyl disaccharide (3D PHAD), in a clinically relevant murine model of pneumonia, and assess the cellular mechanisms that mediate the protective response. Design: Mice received intrapulmonary 3D PHAD (20 μg) or vehicle for 2 consecutive days before challenge with intrapulmonary Klebsiella pneumoniae (2.3 × 10 3 colony-forming units). Mice were followed for 14-day survival, pulmonary K. pneumoniae burden, lung leukocyte profile, leukocyte phagocytic capacity, and cytokine production. Pneumonia severity and leukocyte recruitment were further assessed by histological evaluation. Setting: Research laboratory. Subjects: Wild-type, male C57BL/6 J mice. Interventions: Intrapulmonary treatment with 20 μg 3D PHAD for 2 consecutive days. Measurements and main results: Intrapulmonary treatment with 3D PHAD decreased lung K. pneumoniae colony-forming units and pneumonia severity with an associated improvement in survival compared with mice treated with vehicle. The numbers of neutrophils, monocytes, and macrophages in the lungs of 3D PHAD-treated mice were higher than those in vehicle-treated mice before infection but were not significantly different from vehicle-treated mice at 48 h after K. pneumoniae challenge. Lung innate leukocytes from 3D PHAD-treated mice had increased phagocytic capacity. Treatment with 3D PHAD alone increased cytokines in the lungs but decreased cytokines in plasma during K. pneumoniae pneumonia as compared with control. Conclusions: Intrapulmonary treatment with 3D PHAD augments innate immunity in the lung and facilitates resistance to K. pneumoniae pneumonia.
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Affiliation(s)
- Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jing Zhou
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Julia K. Bohannon
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Margaret A. McBride
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Katherine N. Gibson-Corley
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Naeem K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Allison M. Owen
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Katherine R. Burelbach
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Edward R. Sherwood
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
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Wong ET, Luettich K, Cammack L, Chua CS, Sciuscio D, Merg C, Corciulo M, Piault R, Ashutosh K, Smith C, Leroy P, Moine F, Glabasnia A, Diana P, Chia C, Tung CK, Ivanov N, Hoeng J, Peitsch M, Lee KM, Vanscheeuwijck P. Assessment of inhalation toxicity of cigarette smoke and aerosols from flavor mixtures: 5-week study in A/J mice. J Appl Toxicol 2022; 42:1701-1722. [PMID: 35543240 PMCID: PMC9545811 DOI: 10.1002/jat.4338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 11/10/2022]
Abstract
Most flavors used in e-liquids are generally recognized as safe for oral consumption, but their potential effects when inhaled are not well characterized. In vivo inhalation studies of flavor ingredients in e-liquids are scarce. A structure-based grouping approach was used to select 38 flavor group representatives (FGR) on the basis of known and in silico-predicted toxicological data. These FGRs were combined to create prototype e-liquid formulations and tested against cigarette smoke (CS) in a 5-week inhalation study. Female A/J mice were whole-body exposed for 6 h/day, 5 days/week, for 5 weeks to air, mainstream CS, or aerosols from (1) test formulations containing propylene glycol (PG), vegetable glycerol (VG), nicotine (N; 2% w/w), and flavor (F) mixtures at low (4.6% w/w), medium (9.3% w/w), or high (18.6% w/w) concentration or (2) base formulation (PG/VG/N). Male A/J mice were exposed to air, PG/VG/N, or PG/VG/N/F-high under the same exposure regimen. There were no significant mortality or in-life clinical findings in the treatment groups, with only transient weight loss during the early exposure adaptation period. While exposure to flavor aerosols did not cause notable lung inflammation, it caused only minimal adaptive changes in the larynx and nasal epithelia. In contrast, exposure to CS resulted in lung inflammation and moderate-to-severe changes in the epithelia of the nose, larynx, and trachea. In summary, the study evaluates an approach for assessing the inhalation toxicity potential of flavor mixtures, thereby informing the selection of flavor exposure concentrations (up to 18.6%) for a future chronic inhalation study.
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Affiliation(s)
- Ee Tsin Wong
- PMI R&DPhilip Morris International Research Laboratories Pte LtdSingapore
| | | | - Lydia Cammack
- PMI R&DPhilip Morris International Research Laboratories Pte LtdSingapore
| | - Chin Suan Chua
- PMI R&DPhilip Morris International Research Laboratories Pte LtdSingapore
| | | | - Celine Merg
- PMI R&DPhilip Morris Products S.ANeuchâtelSwitzerland
| | | | - Romain Piault
- PMI R&DPhilip Morris Products S.ANeuchâtelSwitzerland
| | | | | | - Patrice Leroy
- PMI R&DPhilip Morris Products S.ANeuchâtelSwitzerland
| | - Fabian Moine
- PMI R&DPhilip Morris Products S.ANeuchâtelSwitzerland
| | | | | | - Cecilia Chia
- PMI R&DPhilip Morris International Research Laboratories Pte LtdSingapore
| | - Ching Keong Tung
- PMI R&DPhilip Morris International Research Laboratories Pte LtdSingapore
| | | | - Julia Hoeng
- PMI R&DPhilip Morris Products S.ANeuchâtelSwitzerland
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Li Q, Cheng Y, Zhang Z, Bi Z, Ma X, Wei Y, Wei X. Inhibition of ROCK ameliorates pulmonary fibrosis by suppressing M2 macrophage polarisation through phosphorylation of STAT3. Clin Transl Med 2022; 12:e1036. [PMID: 36178087 PMCID: PMC9523675 DOI: 10.1002/ctm2.1036] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 08/09/2022] [Accepted: 08/15/2022] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Emerging evidence provides mechanistic insights into the pathogenesis of pulmonary fibrosis (PF), and rare anti-PF therapeutic method has promising effect in its treatment. Rho-associated coiled-coil kinases (ROCK) inhibition significantly ameliorates bleomycin-induced PF and decreases macrophage infiltration, but the mechanism remains unclear. We established bleomycin and radiation-induced PF to identify the activity of WXWH0265, a newly designed unselective ROCK inhibitor in regulating macrophages. METHODS Bleomycin-induced PF was induced by intratracheal instillation and radiation-induced PF was induced by bilateral thoracic irradiation. Histopathological techniques (haematoxylin and eosin, Masson's trichrome and immunohistochemistry) and hydroxyproline were used to evaluate PF severity. Western blot, quantitative real-time reverse transcription-polymerase chain reaction and flow cytometry were performed to explore the underlying mechanisms. Bone marrow-derived macrophages (BMDMs) were used to verify their therapeutic effect. Clodronate liposomes were applied to deplete macrophages and to identify the therapeutic effect of WXWH0265. RESULTS Therapeutic administration of ROCK inhibitor ameliorates bleomycin-induced PF by inhibiting M2 macrophages polarisation. ROCK inhibitor showed no significant anti-fibrotic effect in macrophages-depleted mice. Treatment with WXWH0265 demonstrated superior protection effect in bleomycin-induced PF compared with positive drugs. In radiation-induced PF, ROCK inhibitor effectively ameliorated PF. Fibroblasts co-cultured with supernatant from various M2 macrophages phenotypes revealed that M2 macrophages stimulated by interleukin-4 promoted extracellular matrix production. Polarisation of M2 macrophages was inhibited by ROCK inhibitor treatment in vitro. The p-signal transducer and activator of transcription 3 (STAT3) in lung tissue and BMDMs was significantly decreased in PF in vivo and vitro after treated with ROCK inhibitors. CONCLUSION Inhibiting ROCK could significantly attenuate bleomycin- and radiation-induced PF by regulating the macrophages polarisation via phosphorylation of STAT3. WXWH0265 is a kind of efficient unselective ROCK inhibitor in ameliorating PF. Furthermore, the results provide empirical evidence that ROCK inhibitor, WXWH0265 is a potential drug to prevent the development of PF.
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Affiliation(s)
- Qingfang Li
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Yuan Cheng
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Zhe Zhang
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Zhenfei Bi
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Xuelei Ma
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Target, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China HospitalSichuan UniversityChengduSichuanPR China
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139
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Dinnon KH, Leist SR, Okuda K, Dang H, Fritch EJ, Gully KL, De la Cruz G, Evangelista MD, Asakura T, Gilmore RC, Hawkins P, Nakano S, West A, Schäfer A, Gralinski LE, Everman JL, Sajuthi SP, Zweigart MR, Dong S, McBride J, Cooley MR, Hines JB, Love MK, Groshong SD, VanSchoiack A, Phelan SJ, Liang Y, Hether T, Leon M, Zumwalt RE, Barton LM, Duval EJ, Mukhopadhyay S, Stroberg E, Borczuk A, Thorne LB, Sakthivel MK, Lee YZ, Hagood JS, Mock JR, Seibold MA, O’Neal WK, Montgomery SA, Boucher RC, Baric RS. SARS-CoV-2 infection produces chronic pulmonary epithelial and immune cell dysfunction with fibrosis in mice. Sci Transl Med 2022; 14:eabo5070. [PMID: 35857635 PMCID: PMC9273046 DOI: 10.1126/scitranslmed.abo5070] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 06/17/2022] [Indexed: 01/27/2023]
Abstract
A subset of individuals who recover from coronavirus disease 2019 (COVID-19) develop post-acute sequelae of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (PASC), but the mechanistic basis of PASC-associated lung abnormalities suffers from a lack of longitudinal tissue samples. The mouse-adapted SARS-CoV-2 strain MA10 produces an acute respiratory distress syndrome in mice similar to humans. To investigate PASC pathogenesis, studies of MA10-infected mice were extended from acute to clinical recovery phases. At 15 to 120 days after virus clearance, pulmonary histologic findings included subpleural lesions composed of collagen, proliferative fibroblasts, and chronic inflammation, including tertiary lymphoid structures. Longitudinal spatial transcriptional profiling identified global reparative and fibrotic pathways dysregulated in diseased regions, similar to human COVID-19. Populations of alveolar intermediate cells, coupled with focal up-regulation of profibrotic markers, were identified in persistently diseased regions. Early intervention with antiviral EIDD-2801 reduced chronic disease, and early antifibrotic agent (nintedanib) intervention modified early disease severity. This murine model provides opportunities to identify pathways associated with persistent SARS-CoV-2 pulmonary disease and test countermeasures to ameliorate PASC.
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Affiliation(s)
- Kenneth H. Dinnon
- Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Sarah R. Leist
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Kenichi Okuda
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Hong Dang
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ethan J. Fritch
- Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Kendra L. Gully
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Gabriela De la Cruz
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Mia D. Evangelista
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Takanori Asakura
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Rodney C. Gilmore
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Padraig Hawkins
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Satoko Nakano
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ande West
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Alexandra Schäfer
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Lisa E. Gralinski
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jamie L. Everman
- Center for Genes, Environment, and Health, National Jewish Health, Denver, Colorado 80206, USA
| | - Satria P. Sajuthi
- Center for Genes, Environment, and Health, National Jewish Health, Denver, Colorado 80206, USA
| | - Mark R. Zweigart
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Stephanie Dong
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jennifer McBride
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Michelle R. Cooley
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jesse B. Hines
- Golden Point Scientific Laboratories, Hoover, Alabama 35216, USA
| | - Miriya K. Love
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Steve D. Groshong
- Division of Pathology, Department of Medicine, National Jewish Health, Denver, Colorado 80206, USA
| | | | | | - Yan Liang
- NanoString Technologies, Seattle, Washington 98109, USA
| | - Tyler Hether
- NanoString Technologies, Seattle, Washington 98109, USA
| | - Michael Leon
- NanoString Technologies, Seattle, Washington 98109, USA
| | - Ross E. Zumwalt
- Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Lisa M. Barton
- Office of the Chief Medical Examiner, Oklahoma City, Oklahoma 73105, USA
| | - Eric J. Duval
- Office of the Chief Medical Examiner, Oklahoma City, Oklahoma 73105, USA
| | | | - Edana Stroberg
- Office of the Chief Medical Examiner, Oklahoma City, Oklahoma 73105, USA
| | - Alain Borczuk
- Weill Cornell Medicine, New York, New York 10065, USA
| | - Leigh B. Thorne
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Muthu K. Sakthivel
- Department of Radiology, University of North Carolina at Chapel Hill, North Carolina 27599, USA
| | - Yueh Z. Lee
- Department of Radiology, University of North Carolina at Chapel Hill, North Carolina 27599, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - James S. Hagood
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Department of Pediatrics, Pulmonology Division and Program for Rare and Interstitial Lung Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jason R. Mock
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Max A. Seibold
- Center for Genes, Environment, and Health, National Jewish Health, Denver, Colorado 80206, USA
- Department of Pediatrics, National Jewish Health, Denver, Colorado 80206, USA
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, Colorado 80045, USA
| | - Wanda K. O’Neal
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Stephanie A. Montgomery
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Richard C. Boucher
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ralph S. Baric
- Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Rapidly Emerging Antiviral Drug Discovery Initiative, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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140
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Gu Y, Lawrence T, Mohamed R, Liang Y, Yahaya BH. The emerging roles of interstitial macrophages in pulmonary fibrosis: A perspective from scRNA-seq analyses. Front Immunol 2022; 13:923235. [PMID: 36211428 PMCID: PMC9536737 DOI: 10.3389/fimmu.2022.923235] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Pulmonary fibrosis is an irreversible and progressive disease affecting the lungs, and the etiology remains poorly understood. This disease can be lethal and currently has no specific clinical therapeutic regimen. Macrophages, the most common type of immune cell in the lungs, have been reported to play a key role in the pathogenesis of fibrotic disease. The lung macrophage population is mostly composed of alveolar macrophages and interstitial macrophages, both of which have not been thoroughly studied in the pathogenesis of lung fibrosis. Interstitial macrophages have recently been recognised for their participation in lung fibrosis due to new technology arising from a combination of bioinformatics and single-cell RNA sequencing analysis. This paper reviews recent developments regarding lung macrophage classification and summarizes the origin and replenishment of interstitial macrophages and their function in pulmonary fibrosis.
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Affiliation(s)
- Yanrong Gu
- Laboratory of Genetic Regulators in the Immune System, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Lung Stem Cells and Gene Therapy Group, Department of Biomedical Sciences, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, Kepala Batas, Malaysia
- Henan Key Laboratory of Immunology and Targeted Therapy, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Toby Lawrence
- Laboratory of Genetic Regulators in the Immune System, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Centre for Inflammation Biology and Cancer Immunology, Cancer Research UK King’s Health Partners Centre, School of Immunology and Microbial Sciences, King’s College London, London, United Kingdom
| | - Rafeezul Mohamed
- Lung Stem Cells and Gene Therapy Group, Department of Biomedical Sciences, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, Kepala Batas, Malaysia
| | - Yinming Liang
- Laboratory of Genetic Regulators in the Immune System, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- Henan Key Laboratory of Immunology and Targeted Therapy, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
- *Correspondence: Yinming Liang, ; Badrul Hisham Yahaya,
| | - Badrul Hisham Yahaya
- Lung Stem Cells and Gene Therapy Group, Department of Biomedical Sciences, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Bertam, Kepala Batas, Malaysia
- *Correspondence: Yinming Liang, ; Badrul Hisham Yahaya,
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141
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Machado ER, van de Vlekkert D, Sheppard HS, Perry S, Downing SM, Laxton J, Ashmun R, Finkelstein DB, Neale GA, Hu H, Harwood FC, Koo SC, Grosveld GC, d'Azzo A. Haploinsufficiency of the lysosomal sialidase NEU1 results in a model of pleomorphic rhabdomyosarcoma in mice. Commun Biol 2022; 5:992. [PMID: 36127469 PMCID: PMC9489700 DOI: 10.1038/s42003-022-03968-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 09/08/2022] [Indexed: 11/08/2022] Open
Abstract
Rhabdomyosarcoma, the most common pediatric sarcoma, has no effective treatment for the pleomorphic subtype. Still, what triggers transformation into this aggressive phenotype remains poorly understood. Here we used Ptch1+/-/ETV7TG/+/- mice with enhanced incidence of rhabdomyosarcoma to generate a model of pleomorphic rhabdomyosarcoma driven by haploinsufficiency of the lysosomal sialidase neuraminidase 1. These tumors share mostly features of embryonal and some of alveolar rhabdomyosarcoma. Mechanistically, we show that the transforming pathway is increased lysosomal exocytosis downstream of reduced neuraminidase 1, exemplified by the redistribution of the lysosomal associated membrane protein 1 at the plasma membrane of tumor and stromal cells. Here we exploit this unique feature for single cell analysis and define heterogeneous populations of exocytic, only partially differentiated cells that force tumors to pleomorphism and promote a fibrotic microenvironment. These data together with the identification of an adipogenic signature shared by human rhabdomyosarcoma, and likely fueling the tumor's metabolism, make this model of pleomorphic rhabdomyosarcoma ideal for diagnostic and therapeutic studies.
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Affiliation(s)
- Eda R Machado
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | | | - Heather S Sheppard
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Scott Perry
- Flow Cytometry Core Facility, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Susanna M Downing
- Department of Cell & Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Jonathan Laxton
- Flow Cytometry Core Facility, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Richard Ashmun
- Flow Cytometry Core Facility, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - David B Finkelstein
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Geoffrey A Neale
- Hartwell Center for Bioinformatics and Biotechnology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Huimin Hu
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Frank C Harwood
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Selene C Koo
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Gerard C Grosveld
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
| | - Alessandra d'Azzo
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
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Nyazika TK, Sibale L, Phiri J, De Ste Croix M, Jasiunaite Z, Mkandawire C, Malamba R, Kankwatira A, Manduwa M, Ferreira DM, Nyirenda TS, Oggioni MR, Mwandumba HC, Jambo KC. Intracellular survival of Streptococcus pneumoniae in human alveolar macrophages is augmented with HIV infection. Front Immunol 2022; 13:992659. [PMID: 36203580 PMCID: PMC9531125 DOI: 10.3389/fimmu.2022.992659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/31/2022] [Indexed: 11/22/2022] Open
Abstract
People Living with HIV (PLHIV) are at an increased risk of pneumococcal pneumonia than HIV-uninfected adults, but the reasons for this are still not well understood. We investigated whether alveolar macrophages (AM) mediated control of pneumococcal infection is impaired in PLHIV compared to HIV-uninfected adults. We assessed anti-bactericidal activity against Streptococcus pneumoniae of primary human AM obtained from PLHIV and HIV-uninfected adults. We found that pneumococcus survived intracellularly in AMs at least 24 hours post ex vivo infection, and this was more frequent in PLHIV than HIV-uninfected adults. Corroborating these findings, in vivo evidence showed that PLHIV had a higher propensity for harboring S. pneumoniae within their AMs than HIV-uninfected adults. Moreover, bacterial intracellular survival in AMs was associated with extracellular propagation of pneumococcal infection. Our data suggest that failure of AMs to eliminate S. pneumoniae intracellularly could contribute to the increased risk of pneumococcal pneumonia in PLHIV.
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Affiliation(s)
- Tinashe K. Nyazika
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Lusako Sibale
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Joseph Phiri
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Megan De Ste Croix
- Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom
| | - Zydrune Jasiunaite
- Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom
| | - Christopher Mkandawire
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Rose Malamba
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Anstead Kankwatira
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Miriam Manduwa
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Daniela M. Ferreira
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Tonney S. Nyirenda
- Department of Pathology, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Marco R. Oggioni
- Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom
- Dipartimento di Farmacia e Biotecnologie, Universita di Bologna, Bologna, Italy
| | - Henry C. Mwandumba
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Kondwani C. Jambo
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
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143
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Lee J, Ahn SY, Le CTT, Lee DH, Jung J, Ko EJ. Protective and vaccine dose-sparing efficacy of Poly I:C-functionalized calcium phosphate nanoparticle adjuvants in inactivated influenza vaccination. Int Immunopharmacol 2022; 112:109240. [PMID: 36115278 DOI: 10.1016/j.intimp.2022.109240] [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: 04/08/2022] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022]
Abstract
Adjuvants are required to increase the immunogenicity and efficacy of vaccination and enable vaccine dose sparing. Polyinosinic-polycytidylic acid (Poly I:C), a toll-like receptor 3 agonist, is a promising adjuvant candidate that can induce cell-mediated immune responses; however, it remains unlicensed owing to its low stability and toxicity. Calcium phosphate (CaP), a biocompatible and biodegradable nanoparticle, is widely used in biomedicine for stable and targeted drug delivery. In this study, we developed Poly I:C-functionalized CaP (Poly-CaP) and evaluated its vaccine adjuvant efficacy in vitro and in vivo. A half dose of Poly-CaP nanoparticles showed similar efficacy to a full dose of soluble Poly I:C in stimulating bone marrow-derived dendritic cells and macrophages to secrete proinflammatory cytokines and express their activation markers. Immunization with a half dose of inactivated influenza vaccine in the presence of Poly I:C or Poly-CaP adjuvants induced sufficient antigen-specific humoral responses after boost immunization. Immunization with Poly I:C, CaP, or Poly-CaP-adjuvanted with a half dose of influenza vaccine showed comparable protective efficacy against lethal virus infection, with lower weight loss and virus titer than a full dose of influenza vaccine. The Poly-CaP adjuvant was effective in stimulating antigen-specific CD4+ T cell proliferation in the lungs. Collectively, our results showed that the Poly-CaP adjuvant enhanced antigen-specific cell-mediated immunity and humoral immune responses with vaccine dose-sparing effects, suggesting its potential as a novel vaccine adjuvant candidate.
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Affiliation(s)
- Jueun Lee
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - So Yeon Ahn
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Chau Thuy Tien Le
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Dong-Ha Lee
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Jaehan Jung
- Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
| | - Eun-Ju Ko
- College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea; Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Republic of Korea; Veterinary Medical Research Institute, Jeju National University, Jeju 63243, Republic of Korea.
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Aegerter H, Lambrecht BN, Jakubzick CV. Biology of lung macrophages in health and disease. Immunity 2022; 55:1564-1580. [PMID: 36103853 DOI: 10.1016/j.immuni.2022.08.010] [Citation(s) in RCA: 171] [Impact Index Per Article: 85.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 12/14/2022]
Abstract
Tissue-resident alveolar and interstitial macrophages and recruited macrophages are critical players in innate immunity and maintenance of lung homeostasis. Until recently, assessing the differential functional contributions of tissue-resident versus recruited macrophages has been challenging because they share overlapping cell surface markers, making it difficult to separate them using conventional methods. This review describes how scRNA-seq and spatial transcriptomics can separate these subpopulations and help unravel the complexity of macrophage biology in homeostasis and disease. First, we provide a guide to identifying and distinguishing lung macrophages from other mononuclear phagocytes in humans and mice. Second, we outline emerging concepts related to the development and function of the various lung macrophages in the alveolar, perivascular, and interstitial niches. Finally, we describe how different tissue states profoundly alter their functions, including acute and chronic lung disease, cancer, and aging.
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Affiliation(s)
- Helena Aegerter
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Bart N Lambrecht
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium; Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium; Department of Pulmonary Medicine, ErasmusMC, Rotterdam, the Netherlands
| | - Claudia V Jakubzick
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH, USA.
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145
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Protocol for isolation and characterization of lung tissue resident memory T cells and airway trained innate immunity after intranasal vaccination in mice. STAR Protoc 2022; 3:101652. [PMID: 36065292 PMCID: PMC9423002 DOI: 10.1016/j.xpro.2022.101652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Vaccination route dictates the quality and localization of immune responses within tissues. Intranasal vaccination seeds tissue-resident adaptive immunity, alongside trained innate responses within the lung/airways, critical for superior protection against SARS-CoV-2. This protocol encompasses intranasal vaccination in mice, step-by-step bronchoalveolar lavage for both cellular and acellular airway components, lung mononuclear cell isolation, and detailed flow cytometric characterization of lung tissue-resident memory T cell responses, and airway macrophage-trained innate immunity. For complete details on the use and execution of this protocol, please refer to Afkhami et al. (2022). Step-by-step procedure for intranasal vaccination in mice Protocol for bronchoalveolar lavage and isolating airway cellular/acellular components Detailed protocol for processing and isolation of lung mononuclear cells Flow cytometry protocol for lung tissue-resident innate/adaptive memory responses
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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146
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Sung PS, Peng YC, Yang SP, Chiu CH, Hsieh SL. CLEC5A is critical in Pseudomonas aeruginosa-induced acute lung injury. JCI Insight 2022; 7:156613. [PMID: 36048544 PMCID: PMC9676025 DOI: 10.1172/jci.insight.156613] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 08/10/2022] [Indexed: 11/30/2022] Open
Abstract
Pseudomonas aeruginosa is one of the most common nosocomial infections worldwide, and it frequently causes ventilator-associated acute pneumonia in immunocompromised patients. Abundant neutrophil extracellular traps (NETs) contribute to acute lung injury, thereby aggravating ventilator-induced lung damage. While pattern recognition receptors (PRRs) TLR4 and TLR5 are required for host defense against P. aeruginosa invasion, the PRR responsible for P. aeruginosa–induced NET formation, proinflammatory cytokine release, and acute lung injury remains unclear. We found that myeloid C-type lectin domain family 5 member A (CLEC5A) interacts with LPS of P. aeruginosa and is responsible for P. aeruginosa–induced NET formation and lung inflammation. P. aeruginosa activates CLEC5A to induce caspase-1–dependent NET formation, but it neither causes gasdermin D (GSDMD) cleavage nor contributes to P. aeruginosa–induced neutrophil death. Blockade of CLEC5A attenuates P. aeruginosa–induced NETosis and lung injury, and simultaneous administration of anti-CLEC5A mAb with ciprofloxacin increases survival rate and decreases collagen deposition in the lungs of mice challenged with a lethal dose of P. aeruginosa. Thus, CLEC5A is a promising therapeutic target to reduce ventilator-associated lung injury and fibrosis in P. aeruginosa–induced pneumonia.
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Affiliation(s)
- Pei-Shan Sung
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Yu-Chun Peng
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Shao-Ping Yang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Cheng-Hsun Chiu
- Department of Pediatrics, Chang Gung Children's Hospital, Taoyuan, Taiwan
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147
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Stevenson ER, Wilkinson ML, Abramova E, Guo C, Gow AJ. Intratracheal Administration of Acyl Coenzyme A Acyltransferase-1 Inhibitor K-604 Reduces Pulmonary Inflammation Following Bleomycin-Induced Lung Injury. J Pharmacol Exp Ther 2022; 382:356-365. [PMID: 35970601 PMCID: PMC9426763 DOI: 10.1124/jpet.122.001284] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/28/2022] [Indexed: 01/19/2023] Open
Abstract
Acute lung injury (ALI) is characterized by epithelial damage, barrier dysfunction, and pulmonary edema. Macrophage activation and failure to resolve play a role in ALI; thus, macrophage phenotype modulation is a rational target for therapeutic intervention. Large, lipid-laden macrophages have been observed in various injury models, including intratracheal bleomycin (ITB), suggesting that lipid storage may play a role in ALI severity. The endoplasmic reticulum-associated enzyme acyl coenzyme A acyltransferase-1 (Acat-1/Soat1) is highly expressed in macrophages, where it catalyzes the esterification of cholesterol, leading to intracellular lipid accumulation. We hypothesize that inhibition of Acat-1 will reduce macrophage activation and improve outcomes of lung injury in ITB. K-604, a selective inhibitor of Acat-1, was used to reduce cholesterol esterification and hence lipid accumulation in response to ITB. Male and female C57BL6/J mice (n = 16-21/group) were administered control, control + K-604, ITB, or ITB + K-604 on d0, control or K-604 on d3, and were sacrificed on day 7. ITB caused significant body weight loss and an increase in cholesterol accumulation in bronchoalveolar lavage cells. These changes were mitigated by Acat-1 inhibition. K-604 also significantly reduced ITB-induced alveolar thickening. Surfactant composition was normalized as indicated by a significant decrease in phospholipid: SP-B ratio in ITB+K-604 compared with ITB. K-604 administration preserved mature alveolar macrophages, decreased activation in response to ITB, and decreased the percentage mature and pro-fibrotic interstitial macrophages. These results show that inhibition of Acat-1 in the lung is associated with reduced inflammatory response to ITB-mediated lung injury. SIGNIFICANCE STATEMENT: Acyl coenzyme A acyltransferase-1 (Acat-1) is critical to lipid droplet formation, and thus inhibition of Acat-1 presents as a pharmacological target. Intratracheal administration of K-604, an Acat-1 inhibitor, reduces intracellular cholesterol ester accumulation in lung macrophages, attenuates inflammation and macrophage activation, and normalizes mediators of surface-active function after intratracheal bleomycin administration in a rodent model. The data presented within suggest that inhibition of Acat-1 in the lung improves acute lung injury outcomes.
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Affiliation(s)
- Emily R Stevenson
- Ernest Mario School of Pharmacy, Department of Pharmacology & Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Melissa L Wilkinson
- Ernest Mario School of Pharmacy, Department of Pharmacology & Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Elena Abramova
- Ernest Mario School of Pharmacy, Department of Pharmacology & Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Changjiang Guo
- Ernest Mario School of Pharmacy, Department of Pharmacology & Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Andrew J Gow
- Ernest Mario School of Pharmacy, Department of Pharmacology & Toxicology, Rutgers, The State University of New Jersey, Piscataway, New Jersey
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148
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Inhibition of Bruton’s Tyrosine Kinase Alleviates Monocrotaline-Induced Pulmonary Arterial Hypertension by Modulating Macrophage Polarization. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6526036. [PMID: 36071873 PMCID: PMC9444460 DOI: 10.1155/2022/6526036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 08/04/2022] [Indexed: 11/25/2022]
Abstract
Macrophage accumulation and activation contribute to the development of pulmonary arterial hypertension (PAH), while Bruton's tyrosine kinase (BTK) is an important regulator for the activation and polarization of macrophage. However, the role of BTK in PAH remains unknown. In the present study, a selective BTK inhibitor (BTKi) BGB-3111 was applied to investigate the role of BTK in monocrotaline- (MCT-) induced PAH rat and phorbol myristate acetate- (PMA-) differentiated U937 macrophages. Our results showed that BTK was mainly distributed and upregulated in CD68+ macrophages in the lungs of PAH rats. Daily treated with BTKi BGB-3111 alleviated MCT-induced PAH, as indicated by the decrease in right ventricular systolic pressure (RVSP), attenuation in right ventricle hypertrophy and pulmonary vascular remodeling, reduction in perivascular collagen deposition, as well as inhibition of inflammation and endothelial-to-mesenchymal transition (EndMT) in the lung. Moreover, BTK inhibition suppressed MCT-induced recruitment of macrophages, especially the classical activated macrophages (M1) in the lung. In vitro, BGB-3111 significantly suppressed lipopolysaccharide- (LPS-) induced M1 polarization and proinflammatory cytokine production in U937-derived macrophages. The underlying mechanism is associated with the inhibition of NF-κB/MAPK pathways and nucleotide-binding oligomerization domain-like receptor with pyrin domain 3 (NLRP3) inflammasome activation. Furthermore, macrophage conditioned medium (CM) from LPS-induced M1 macrophages promoted migration and EndMT of HPAECs, while CM from BGB-3111-pretreated LPS-induced M1 macrophages failed to induce this response. These findings suggest that BTK inhibition alleviates PAH by regulating macrophage recruitment and polarization and may be a potential therapeutic strategy for the treatment of PAH.
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149
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Yurakova TR, Gubernatorova EO, Gorshkova EA, Nosenko MA, Nedospasov SA, Drutskaya MS. HDM induces distinct immunometabolic phenotype in macrophages in TLR4-dependent manner. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166531. [PMID: 36038040 DOI: 10.1016/j.bbadis.2022.166531] [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: 05/16/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 12/01/2022]
Abstract
Asthma is one of the most common chronic diseases. In many cases it is preceded by the development of an immune response to allergens such as animal fur, dust, pollens and etc. In human population this disease is heterogeneous, and no selective drugs are available at the moment for some endotypes of asthma. The role of the adaptive immune system in the pathogenesis of asthma was extensively studied, while the role of innate immune cells, in particular myeloid cells, was not sufficiently addressed. Myeloid cells, such as macrophages and dendritic cells, are characterized by high plasticity, heterogenicity and ability to undergo polarization in response to various pathogenic stimuli, including those engaging innate immune receptors. Recently, special attention was drawn to the link between polarization of macrophages and cell metabolism. We hypothesized that immunometabolic reprogramming of myeloid cells, in particular, of macrophages and dendritic cells during sensitization with an allergen may affect further immune response and asthma development. To test this hypothesis, we generated distinct types of myeloid cells in vitro from murine bone marrow and analyzed their immunometabolic profiles upon activation with house dust mite extract (HDM) and its key active components. We found that the combination of lipopolysaccharide (LPS) and beta-glucan is sufficient to upregulate proinflammatory cytokine production as well as respiratory and glycolytic capacity of myeloid cells, comparably to HDM. This specific immunometabolic phenotype was associated with altered mitochondrial morphology and possibly with increased ROS production in macrophages. Moreover, we found that both TNF production and metabolic remodeling of macrophages in response to HDM are TLR4-dependent processes. Altogether, these results expand our understanding of molecular mechanisms underlying asthma induction and pathogenesis and may potentially lead to new therapeutic strategies for the treatment of this disease.
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Affiliation(s)
- Taisiya R Yurakova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Division of Immunobiology and Biomedicine, Center of Genetics and Life Sciences, Sirius University of Science and Technology, 354340 Federal Territory Sirius, Russia
| | | | - Ekaterina A Gorshkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Maxim A Nosenko
- Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
| | - Sergei A Nedospasov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Division of Immunobiology and Biomedicine, Center of Genetics and Life Sciences, Sirius University of Science and Technology, 354340 Federal Territory Sirius, Russia; Faculty of Biology and Belozersky Insitute of Physico-Chemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Marina S Drutskaya
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Division of Immunobiology and Biomedicine, Center of Genetics and Life Sciences, Sirius University of Science and Technology, 354340 Federal Territory Sirius, Russia.
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150
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Immune Response to Biofilm Growing Pulmonary Pseudomonas aeruginosa Infection. Biomedicines 2022; 10:biomedicines10092064. [PMID: 36140163 PMCID: PMC9495460 DOI: 10.3390/biomedicines10092064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022] Open
Abstract
Biofilm infections are tolerant to the host responses and recalcitrance to antibiotic drugs and disinfectants. The induced host-specific innate and adaptive immune responses by established biofilms are significantly implicated and contributes to the course of the infections. Essentially, the host response may be the single one factor impacting the outcome most, especially in cases where the biofilm is caused by low virulent opportunistic bacterial species. Due to the chronicity of biofilm infections, activation of the adaptive immune response mechanisms is frequently experienced, and instead of clearing the infection, the adaptive response adds to the pathogenesis. To a high degree, this has been reported for chronic Pseudomonas aeruginosa lung infections, where both a pronounced antibody response and a skewed Th1/Th2 balance has been related to a poorer outcome. In addition, detection of an adaptive immune response can be used as a significant indicator of a chronic P. aeruginosa lung infection and is included in the clinical definitions as such. Those issues are presented in the present review, along with a characterization of the airway structure in relation to immune responses towards P. aeruginosa pulmonary infections.
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