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Wu X, Deng Y, Xu Y, Kang H, Hu JJ, Yoon J, Liang G. Activatable Fluorescence and Bio/Chemiluminescence Probes for Aminopeptidases: From Design to Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2409893. [PMID: 39235570 DOI: 10.1002/adma.202409893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 08/27/2024] [Indexed: 09/06/2024]
Abstract
Aminopeptidases are exopeptidases that catalyze the cleavage of amino acid residues from the N-terminal fragment of protein or peptide substrates. Owing to their function, they play important roles in protein maturation, signal transduction, cell-cycle control, and various disease mechanisms, notably in cancer pathology. To gain better insights into their function, molecular imaging assisted by fluorescence and bio/chemiluminescence probes has become an indispensable method to their superiorities, including excellent sensitivity, selectivity, and real-time and noninvasive imaging. Numerous efforts are made to develop activatable probes that can effectively enhance efficiency and accuracy as well as minimize the side effects. This review is classified according to the type of aminopeptidases, summarizing some recent works on the design, work mechanism, and sensing, imaging, and theranostic performance of their activatable probe. Finally, the current challenges are outlined in developing activatable probes for aminopeptidases and provide possible solutions for future advancements.
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Affiliation(s)
- Xiaofeng Wu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yu Deng
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Ying Xu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Heemin Kang
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, South Korea
| | - Jing-Jing Hu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Juyoung Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, South Korea
| | - Gaolin Liang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
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2
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Yu J, Fu Y, Gao J, Zhang Q, Zhang N, Zhang Z, Jiang X, Chen C, Wen Z. Cathepsin C from extracellular histone-induced M1 alveolar macrophages promotes NETosis during lung ischemia-reperfusion injury. Redox Biol 2024; 74:103231. [PMID: 38861835 PMCID: PMC11209641 DOI: 10.1016/j.redox.2024.103231] [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: 04/10/2024] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 06/13/2024] Open
Abstract
Primary graft dysfunction (PGD) is a severe form of acute lung injury resulting from lung ischemia/reperfusion injury (I/R) in lung transplantation (LTx), associated with elevated post-transplant morbidity and mortality rates. Neutrophils infiltrating during reperfusion are identified as pivotal contributors to lung I/R injury by releasing excessive neutrophil extracellular traps (NETs) via NETosis. While alveolar macrophages (AMs) are involved in regulating neutrophil chemotaxis and infiltration, their role in NETosis during lung I/R remains inadequately elucidated. Extracellular histones constitute the main structure of NETs and can activate AMs. In this study, we confirmed the significant involvement of extracellular histone-induced M1 phenotype of AMs (M1-AMs) in driving NETosis during lung I/R. Using secretome analysis, public protein databases, and transwell co-culture models of AMs and neutrophils, we identified Cathepsin C (CTSC) derived from AMs as a major mediator in NETosis. Further elucidating the molecular mechanisms, we found that CTSC induced NETosis through a pathway dependent on NADPH oxidase-mediated production of reactive oxygen species (ROS). CTSC could significantly activate p38 MAPK, resulting in the phosphorylation of the NADPH oxidase subunit p47phox, thereby facilitating the trafficking of cytoplasmic subunits to the cell membrane and activating NADPH oxidase. Moreover, CTSC up-regulated and activated its substrate membrane proteinase 3 (mPR3), resulting in an increased release of NETosis-related inflammatory factors. Inhibiting CTSC revealed great potential in mitigating NETosis-related injury during lung I/R. These findings suggests that CTSC from AMs may be a crucial factor in mediating NETosis during lung I/R, and targeting CTSC inhition may represent a novel intervention for PGD in LTx.
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Affiliation(s)
- Jing Yu
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China; Department of Anesthesiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, China
| | - Yu Fu
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiameng Gao
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qingqing Zhang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Nan Zhang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhiyuan Zhang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xuemei Jiang
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
| | - Zongmei Wen
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
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Chen X, Yan Y, Du J, Shen X, He C, Pan H, Zhu J, Liu X. Non-peptidyl non-covalent cathepsin C inhibitoEEr bearing a unique thiophene-substituted pyridine: Design, structure-activity relationship and anti-inflammatory activity in vivo. Eur J Med Chem 2022; 236:114368. [DOI: 10.1016/j.ejmech.2022.114368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/20/2022] [Accepted: 04/05/2022] [Indexed: 11/04/2022]
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4
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Shen XB, Chen X, Zhang ZY, Wu FF, Liu XH. Cathepsin C inhibitors as anti-inflammatory drug discovery: Challenges and opportunities. Eur J Med Chem 2021; 225:113818. [PMID: 34492551 DOI: 10.1016/j.ejmech.2021.113818] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/26/2021] [Accepted: 08/31/2021] [Indexed: 12/13/2022]
Abstract
Cathepsin C, an important lysosomal cysteine protease, mediates the maturation process of neutrophil serine proteases, and participates in the inflammation and immune regulation process associated with polymorphonuclear neutrophils. Therefore, cathepsin C is considered to be an attractive target for treating inflammatory diseases. With INS1007 (trade name: brensocatib) being granted a breakthrough drug designation by FDA for the treatment of Adult Non-cystic Fibrosis Bronchiectasis and Coronavirus Disease 2019, the development of cathepsin C inhibitor will attract attentions from medicinal chemists in the future soon. Here, we summarized the research results of cathepsin C as a therapeutic target, focusing on the development of cathepsin C inhibitor, and provided guidance and reference opinions for the upcoming development boom of cathepsin C inhibitor.
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Affiliation(s)
- Xiao Bao Shen
- Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, 236037, PR China
| | - Xing Chen
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Zhao Yan Zhang
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Fu Fang Wu
- Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, 236037, PR China.
| | - Xin Hua Liu
- Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, 236037, PR China; School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
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5
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Li Y, Ke Y, Xia X, Wang Y, Cheng F, Liu X, Jin X, Li B, Xie C, Liu S, Chen W, Yang C, Niu Y, Jia R, Chen Y, Liu X, Wang Z, Zheng F, Jin Y, Li Z, Yang N, Cao P, Chen H, Ping J, He F, Wang C, Zhou G. Genome-wide association study of COVID-19 severity among the Chinese population. Cell Discov 2021; 7:76. [PMID: 34465742 PMCID: PMC8408196 DOI: 10.1038/s41421-021-00318-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 07/29/2021] [Indexed: 01/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection causes a broad clinical spectrum of coronavirus disease 2019 (COVID-19). The development of COVID-19 may be the result of a complex interaction between the microbial, environmental, and host genetic components. To reveal genetic determinants of susceptibility to COVID-19 severity in the Chinese population, we performed a genome-wide association study on 885 severe or critical COVID-19 patients (cases) and 546 mild or moderate patients (controls) from two hospitals, Huoshenshan and Union hospitals at Wuhan city in China. We identified two loci on chromosome 11q23.3 and 11q14.2, which are significantly associated with the COVID-19 severity in the meta-analyses of the two cohorts (index rs1712779: odds ratio [OR] = 0.49; 95% confidence interval [CI], 0.38-0.63 for T allele; P = 1.38 × 10-8; and index rs10831496: OR = 1.66; 95% CI, 1.38-1.98 for A allele; P = 4.04 × 10-8, respectively). The results for rs1712779 were validated in other two small COVID-19 cohorts in the Asian populations (P = 0.029 and 0.031, respectively). Furthermore, we identified significant eQTL associations for REXO2, C11orf71, NNMT, and CADM1 at 11q23.3, and CTSC at 11q14.2, respectively. In conclusion, our findings highlight two loci at 11q23.3 and 11q14.2 conferring susceptibility to the severity of COVID-19, which might provide novel insights into the pathogenesis and clinical treatment of this disease.
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Affiliation(s)
- Yuanfeng Li
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Yuehua Ke
- Center for Disease Control and Prevention of PLA, Beijing, China.,Department of Laboratory Medicine, Wuhan Huoshenshan Hospital, Wuhan, Hubei, China
| | - Xinyi Xia
- Department of Laboratory Medicine, Wuhan Huoshenshan Hospital, Wuhan, Hubei, China.,COVID-19 Research Center, Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing Clinical College of Southern Medical University, Nanjing, Jiangsu, China
| | - Yahui Wang
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China.,State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Lifeomics, Beijing, China
| | - Fanjun Cheng
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xinyi Liu
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Xin Jin
- School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Boan Li
- Clinical Laboratory Medicine Center, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chengyong Xie
- Medical College of Guizhou University, Guiyang, Guizhou, China
| | - Siyang Liu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Weijun Chen
- University of Chinese Academy of Sciences, Beijing, China
| | - Chenning Yang
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Yuguang Niu
- Department of Otolaryngology, The First Medical Center of General Hospital of PLA, Beijing, China
| | - Ruizhong Jia
- Center for Disease Control and Prevention of PLA, Beijing, China
| | - Yong Chen
- Center for Disease Control and Prevention of PLA, Beijing, China
| | - Xiong Liu
- Center for Disease Control and Prevention of PLA, Beijing, China
| | - Zhihua Wang
- Center for Disease Control and Prevention of PLA, Beijing, China
| | - Fang Zheng
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yan Jin
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhen Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ning Yang
- Clinical Laboratory Medicine Center, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Pengbo Cao
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Hongxia Chen
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Jie Ping
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China
| | - Fuchu He
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Lifeomics, Beijing, China.,Guangzhou Laboratory, Guangzhou, Guangdong, China
| | - Changjun Wang
- Center for Disease Control and Prevention of PLA, Beijing, China. .,Department of Laboratory Medicine, Wuhan Huoshenshan Hospital, Wuhan, Hubei, China.
| | - Gangqiao Zhou
- State Key Laboratory of Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, China. .,Medical College of Guizhou University, Guiyang, Guizhou, China. .,Guangzhou Laboratory, Guangzhou, Guangdong, China. .,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.
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6
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Chen X, Yan Y, Zhang Z, Zhang F, Liu M, Du L, Zhang H, Shen X, Zhao D, Shi JB, Liu X. Discovery and In Vivo Anti-inflammatory Activity Evaluation of a Novel Non-peptidyl Non-covalent Cathepsin C Inhibitor. J Med Chem 2021; 64:11857-11885. [PMID: 34374541 DOI: 10.1021/acs.jmedchem.1c00104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cathepsin C (Cat C) participates in inflammation and immune regulation by affecting the activation of neutrophil serine proteases (NSPs). Therefore, cathepsin C is an attractive target for treatment of NSP-related inflammatory diseases. Here, the complete discovery process of the first potent "non-peptidyl non-covalent cathepsin C inhibitor" was described with hit finding, structure optimization, and lead discovery. Starting with hit 14, structure-based optimization and structure-activity relationship study were comprehensively carried out, and lead compound 54 was discovered as a potent drug-like cathepsin C inhibitor both in vivo and in vitro. Also, compound 54 (with cathepsin C Enz IC50 = 57.4 nM) exhibited effective anti-inflammatory activity in an animal model of chronic obstructive pulmonary disease. These results confirmed that the non-peptidyl and non-covalent derivative could be used as an effective cathepsin C inhibitor and encouraged us to continue further drug discovery on the basis of this finding.
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Affiliation(s)
- Xing Chen
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Yaoyao Yan
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Zhaoyan Zhang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Faming Zhang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Mingming Liu
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Leran Du
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Haixia Zhang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Xiaobao Shen
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Dahai Zhao
- Affiliated Hospital 2, Anhui Medical University, Hefei 230601, P. R. China
| | - Jing Bo Shi
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
| | - Xinhua Liu
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei 230032, P. R. China
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7
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Zhao X, Liu S, Yang X, Liu Y, Liu G, Fan K, Ma J. Cathepsin C aggravates neuroinflammation via promoting production of CCL2 and CXCL2 in glial cells and neurons in a cryogenic brain lesion. Neurochem Int 2021; 148:105107. [PMID: 34171415 DOI: 10.1016/j.neuint.2021.105107] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/19/2021] [Accepted: 06/18/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Chemokines regulate infiltration of immune cells to brain in inflammation. Cathepsin C (CatC), a lysosomal protease, has been found to participate in neuroinflammation. However, how CatC affects chemokines expression in neuroinflammation triggered by traumatic brain injury (TBI) remains unclear. Here, we investigated the effects of CatC on chemokines and neuroinflammation in TBI. METHODS The present study used CatC knockdown (KD) and overexpression (OE) mice to generate cryogenic brain lesion model and determined effects of CatC on expression of chemokines CCL2, CCL5 and CXCL2 and infiltration of immune cells in acute and chronic phases of the lesion. Further, cellular sources of various chemokines were demonstrated in vitro. Values were compared with wild type (WT) mice. RESULTS The results found that 6 h after lesion, CatC expression,IL-1β and TNF-α mRNA and protein expression were strongly induced in the lesions; CCL2 and CXCL2 mRNA and protein expression were increased in CatC OE mice, while decreased in CatC KD mice. On the 3rd day after lesion, macrophages and neutrophils were mainly infiltrated to the lesions. Simultaneously, Iba-1+ cells in CatC OE mice were increased, while MPO + cells in CatC KD mice were decreased. In contrast, on the 28th day after lesion, a few lymphocytes were infiltrated surrounding new blood vessels. CatC OE mice showed larger volumes of scar areas, higher expression of CCL2,CXCL2,IL-1β,TNF-α,IL-6 and iNOS, as well as stronger GFAP+ and Iba-1+ signals, while CatC KD mice had reversed effects. No significant differences of CCL5 expression were found in various genotype mice. Further, in vitro study demonstrated CatC-induced expression of CCL2 were mainly derived from microglia and neurons, while CXCL2 derived from microglia and astrocytes. CONCLUSION Our data indicate that CatC aggravates neuroinflammation via promoting production of CCL2 and CXCL2 in glial cells and neurons in a cryogenic brain lesion, providing potential cellular and molecular targets for future intervention of TBI and other neuroinflammatory diseases.
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Affiliation(s)
- Xinnan Zhao
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Shuang Liu
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Xiaohan Yang
- Department of Morphology, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Yanna Liu
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Gang Liu
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Kai Fan
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.
| | - Jianmei Ma
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China; National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, Liaoning, China.
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8
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Li J, Durose WW, Ito J, Kakita A, Iguchi Y, Katsuno M, Kunisawa K, Shimizu T, Ikenaka K. Exploring the factors underlying remyelination arrest by studying the post-transcriptional regulatory mechanisms of cystatin F gene. J Neurochem 2020; 157:2070-2090. [PMID: 32947653 DOI: 10.1111/jnc.15190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 08/11/2020] [Accepted: 09/07/2020] [Indexed: 12/20/2022]
Abstract
Remyelination plays an important role in determining the fate of demyelinating disorders. However, it is arrested during chronic disease states. Cystatin F, a papain-like lysosomal cysteine proteinase inhibitor, is a crucial regulator of demyelination and remyelination. Using hemizygous proteolipid protein transgenic 4e (PLP4e/- ) mice, an animal model of chronic demyelination, we found that cystatin F mRNA expression was induced at 2.5 months of age and up-regulated in the early phase of demyelination, but significantly decreased in the chronic phase. We next investigated cystatin F regulatory factors as potential mechanisms of remyelination arrest in chronic demyelinating disorders. We used the CysF-STOP-tetO::Iba-mtTA mouse model, in which cystatin F gene expression is driven by the tetracycline operator. Interestingly, we found that forced cystatin F mRNA over-expression was eventually decreased. Our findings show that cystatin F expression is modulated post-transcriptionally. We next identified embryonic lethal, abnormal vision, drosophila like RNA-binding protein 1 (ELAVL-1), and miR29a as cystatin F mRNA stabilizing and destabilizing factors, respectively. These roles were confirmed in vitro in NIH3T3 cells. Using postmortem plaque samples from human multiple sclerosis patients, we also confirmed that ELAVL-1 expression was highly correlated with the previously reported expression pattern of cystatin F. These data indicate the important roles of ELAVL-1 and miR29a in regulating cystatin F expression. Furthermore, they provide new insights into potential therapeutic targets for demyelinating disorders.
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Affiliation(s)
- Jiayi Li
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.,Department of Physiological Sciences, School of Life Science, Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan.,Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Wilaiwan Wisessmith Durose
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.,Department of Physiological Sciences, School of Life Science, Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan.,Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhonpathom, Thailand.,Department of Pediatrics, Hematology University of Minnesota, Minneapolis, MN, USA
| | - Junko Ito
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Yohei Iguchi
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahisa Katsuno
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuo Kunisawa
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.,Department of Physiological Sciences, School of Life Science, Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan.,Research Division of Advanced Diagnostic System, Graduate School of Health Sciences, Fujita Health University, Toyoake, Japan
| | - Takeshi Shimizu
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.,Department of Physiological Sciences, School of Life Science, Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan.,Department of Neurophysiology and Brain Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Kazuhiro Ikenaka
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.,Department of Physiological Sciences, School of Life Science, Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan
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9
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Zhang X, Wang X, Yin H, Zhang L, Feng A, Zhang QX, Lin Y, Bao B, Hernandez LL, Shi GP, Liu J. Functional Inactivation of Mast Cells Enhances Subcutaneous Adipose Tissue Browning in Mice. Cell Rep 2020; 28:792-803.e4. [PMID: 31315055 DOI: 10.1016/j.celrep.2019.06.044] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 04/08/2019] [Accepted: 06/12/2019] [Indexed: 12/16/2022] Open
Abstract
Adipose tissue browning and systemic energy expenditure provide a defense mechanism against obesity and associated metabolic diseases. In high-cholesterol Western diet-fed mice, mast cell (MC) inactivation ameliorates obesity and insulin resistance and improves the metabolic rate, but a direct role of adipose tissue MCs in thermogenesis and browning remains unproven. Here, we report that adrenoceptor agonist norepinephrine-stimulated metabolic rate and subcutaneous adipose tissue (SAT) browning are enhanced in MC-deficient Kitw-sh/w-sh mice and MC-stabilized wild-type mice on a chow diet. MC reconstitution to SAT in Kitw-sh/w-sh mice blocks these changes. Mechanistic studies demonstrate that MC inactivation elevates SAT platelet-derived growth factor receptor A (PDGFRα+) adipocyte precursor proliferation and accelerates beige adipocyte differentiation. Using the tryptophan hydroxylase 1 (TPH1) inhibitor and TPH1-deficient MCs, we show that MC-derived serotonin inhibits SAT browning and systemic energy expenditure. Functional inactivation of MCs or inhibition of MC serotonin synthesis in SAT promotes adipocyte browning and systemic energy metabolism in mice.
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Affiliation(s)
- Xian Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Xin Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hao Yin
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Lei Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Airong Feng
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Qiu-Xia Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Yan Lin
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Bin Bao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Laura L Hernandez
- Department of Dairy Science, University of Wisconsin, Madison, WI 53706, USA
| | - Guo-Ping Shi
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
| | - Jian Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China.
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10
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Audzeyenka I, Rachubik P, Rogacka D, Typiak M, Kulesza T, Angielski S, Rychłowski M, Wysocka M, Gruba N, Lesner A, Saleem MA, Piwkowska A. Cathepsin C is a novel mediator of podocyte and renal injury induced by hyperglycemia. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118723. [PMID: 32302668 DOI: 10.1016/j.bbamcr.2020.118723] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 02/07/2023]
Abstract
A growing body of evidence suggests a role of proteolytic enzymes in the development of diabetic nephropathy. Cathepsin C (CatC) is a well-known regulator of inflammatory responses, but its involvement in podocyte and renal injury remains obscure. We used Zucker rats, a genetic model of metabolic syndrome and insulin resistance, to determine the presence, quantity, and activity of CatC in the urine. In addition to the animal study, we used two cellular models, immortalized human podocytes and primary rat podocytes, to determine mRNA and protein expression levels via RT-PCR, Western blot, and confocal microscopy, and to evaluate CatC activity. The role of CatC was analyzed in CatC-depleted podocytes using siRNA and glycolytic flux parameters were obtained from extracellular acidification rate (ECAR) measurements. In functional analyses, podocyte and glomerular permeability to albumin was determined. We found that podocytes express and secrete CatC, and a hyperglycemic environment increases CatC levels and activity. Both high glucose and non-specific activator of CatC phorbol 12-myristate 13-acetate (PMA) diminished nephrin, cofilin, and GLUT4 levels and induced cytoskeletal rearrangements, increasing albumin permeability in podocytes. These negative effects were completely reversed in CatC-depleted podocytes. Moreover, PMA, but not high glucose, increased glycolytic flux in podocytes. Finally, we demonstrated that CatC expression and activity are increased in the urine of diabetic Zucker rats. We propose a novel mechanism of podocyte injury in diabetes, providing deeper insight into the role of CatC in podocyte biology.
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Affiliation(s)
- Irena Audzeyenka
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland; Faculty of Chemistry, University of Gdansk, Poland.
| | - Patrycja Rachubik
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland
| | - Dorota Rogacka
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland; Faculty of Chemistry, University of Gdansk, Poland
| | - Marlena Typiak
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland
| | - Tomasz Kulesza
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland
| | - Stefan Angielski
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland
| | - Michał Rychłowski
- Intercollegiate Faculty of Biotechnology, University of Gdansk - Medical University of Gdansk, Poland
| | | | | | - Adam Lesner
- Faculty of Chemistry, University of Gdansk, Poland
| | - Moin A Saleem
- Bristol Renal, University of Bristol, United Kingdom
| | - Agnieszka Piwkowska
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Gdansk, Poland; Faculty of Chemistry, University of Gdansk, Poland
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11
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Hernandez JD, Yu M, Sibilano R, Tsai M, Galli SJ. Development of multiple features of antigen-induced asthma pathology in a new strain of mast cell deficient BALB/c-Kit W-sh/W-sh mice. J Transl Med 2020; 100:516-526. [PMID: 31857699 PMCID: PMC7102933 DOI: 10.1038/s41374-019-0354-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/25/2019] [Accepted: 10/29/2019] [Indexed: 11/26/2022] Open
Abstract
Mast cell-deficient mice are widely used to identify and quantify contributions of mast cells to diverse biological responses in vivo, including allergic inflammation. However, despite the fact that scores of genes have been identified as modifiers of allergic inflammation, most mast cell-deficient models have been available only on a single genetic background. We transferred the KitW-sh allele onto the BALB/c background to generate BALB/c mast cell-deficient mice (BALB/c-KitW-sh/W-sh). BALB/c-KitW-sh/W-sh mice have dramatically reduced mast cell numbers (0-2% of wild type) in all tissues examined, as well as subtle hematologic differences from the corresponding wild type mice, including splenomegaly with evidence of increased splenic hematopoiesis. We examined in BALB/c-KitW-sh/W-sh mice models of allergic inflammation that are substantially diminished in C57BL/6-KitW-sh/W-sh mast cell-deficient mice. In a model of acute allergic inflammation, i.e., IgE-dependent passive cutaneous anaphylaxis, both ear swelling and leukocyte infiltration were largely or entirely absent in BALB/c-KitW-sh/W-sh mice. In contrast, in two different models of allergic airway inflammation, airway hyperresponsiveness, lung inflammation, and airway remodeling developed robustly in mast cell-deficient BALB/c-KitW-sh/W-sh mice. These results support the conclusion that the importance of mast cell contributions in various models of allergic inflammation may be at least partially determined by genetic background.
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Affiliation(s)
- Joseph D Hernandez
- Department of Pathology and the Sean N. Parker Center for Allergy & Asthma Research, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pediatrics, Division of Immunology, Allergy and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Mang Yu
- Department of Pathology and the Sean N. Parker Center for Allergy & Asthma Research, Stanford University School of Medicine, Stanford, CA, USA
| | - Riccardo Sibilano
- Department of Pathology and the Sean N. Parker Center for Allergy & Asthma Research, Stanford University School of Medicine, Stanford, CA, USA
| | - Mindy Tsai
- Department of Pathology and the Sean N. Parker Center for Allergy & Asthma Research, Stanford University School of Medicine, Stanford, CA, USA
| | - Stephen J Galli
- Department of Pathology and the Sean N. Parker Center for Allergy & Asthma Research, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.
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12
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Hou W, Sun H, Ma Y, Liu C, Zhang Z. Identification and Optimization of Novel Cathepsin C Inhibitors Derived from EGFR Inhibitors. J Med Chem 2019; 62:5901-5919. [DOI: 10.1021/acs.jmedchem.9b00631] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Weijie Hou
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC Life Science Park, Beijing 102206, China
| | - Huan Sun
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC Life Science Park, Beijing 102206, China
| | - Yongfen Ma
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC Life Science Park, Beijing 102206, China
| | - Chunyan Liu
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC Life Science Park, Beijing 102206, China
| | - Zhiyuan Zhang
- National Institute of Biological Sciences (NIBS), 7 Science Park Road, ZGC Life Science Park, Beijing 102206, China
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13
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Zhu Y, Fan S, Lu Y, Wei Y, Tang J, Yang Y, Li F, Chen Q, Zheng J, Liu X. Quercetin confers protection of murine sepsis by inducing macrophage M2 polarization via the TRPM2 dependent calcium influx and AMPK/ATF3 activation. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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14
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Different Faces for Different Places: Heterogeneity of Neutrophil Phenotype and Function. J Immunol Res 2019; 2019:8016254. [PMID: 30944838 PMCID: PMC6421822 DOI: 10.1155/2019/8016254] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/22/2018] [Accepted: 01/03/2019] [Indexed: 02/05/2023] Open
Abstract
As the most abundant leukocytes in the circulation, neutrophils are committed to innate and adaptive immune effector function to protect the human body. They are capable of killing intruding microbes through various ways including phagocytosis, release of granules, and formation of extracellular traps. Recent research has revealed that neutrophils are heterogeneous in phenotype and function and can display outstanding plasticity in both homeostatic and disease states. The great flexibility and elasticity arm neutrophils with important regulatory and controlling functions in various disease states such as autoimmunity and inflammation as well as cancer. Hence, this review will focus on recent literature describing neutrophils' variable and diverse phenotypes and functions in different contexts.
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15
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Guo L, Meng M, Wei Y, Lin F, Jiang Y, Cui X, Wang G, Wang C, Guo X. Protective Effects of Live Combined B. subtilis and E. faecium in Polymicrobial Sepsis Through Modulating Activation and Transformation of Macrophages and Mast Cells. Front Pharmacol 2019; 9:1506. [PMID: 30719003 PMCID: PMC6348999 DOI: 10.3389/fphar.2018.01506] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/10/2018] [Indexed: 12/12/2022] Open
Abstract
Aims: Clinical studies showed that the use of probiotics during critical illness reduced nosocomial infection and improved clinical outcome. However, the functional mechanisms of probiotics is remains unclear. Therefore the aim of current study is to explore the protective effects and understand the underlying mechanisms for the beneficial effects of live combined Bacillus subtilis and Enterococcus faecium (LCBE) in cecal ligation puncture (CLP)-induced sepsis. Methods and Results: Seven-week-old C57BL/6J mice were divided into three groups: sham group (6 mice), CLP-control group (20 mice, pretreatment with saline for 7 days before CLP surgery) and CLP-probiotics group (14 mice, pretreatment with LCBE enteric-coated capsules for 7 days before CLP surgery). In survival experiment, mice were monitored for 7 days after CLP. After the procedure, mice were sacrificed, and, serum, and peritoneal lavage fluid were collected and intestinal ileal samples were harvested. Results: Our results showed that the mortality was significantly reduced in mice CLP-probiotics group vs. CLP-control group (P < 0.05). Also, treatment CLP-probiotics group decreased the injury scores CLP-probiotics group when compared to CLP-control group. Additionally, levels of pro-inflammatory cytokines IL-6 and TNF-α levels in the serum and intestinal ileal tissues of CLP-probiotics group were reduced when compared to CLP-control group (P < 0.05). However, no significant differences in anti-inflammatory levels of IL-10 and TGF-β1 were observed between CLP-control and CLP-probiotic groups. Furthermore, our experiments showed that that probiotic treatment suppressed the macrophage activation and transformation from M-type to M1-type, inhibited the mast cells (MCs) degranulation, and activation of AKT (kinase B) pathway. Conclusion: In conclusion, our data shows that probiotics have a protective role in CLP septic mice through reducing intestinal inflammation, altering macrophage polarization and MCs degranulation, and regulating AKT signaling. Significance and Impact of Study: This study demonstrated the protective effects and mechanisms involved in the protective role of live combined Bacillus subtilis and Enterococcus faecium (LCBE) in CLP-induced septic mice model.
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Affiliation(s)
- Lisha Guo
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Department of Emergency, Binzhou Medical University Hospital, Binzhou, China
| | - Mei Meng
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Yaping Wei
- Department of Physiology and Pathophysiology, School of Basic Medicine, Shandong University, Jinan, China
| | - Feixue Lin
- Binzhou Medical University Hospital, Binzhou, China
| | - Ying Jiang
- School of Medicine, Shandong University, Jinan, China
| | - Xianzhen Cui
- School of Medicine, Shandong University, Jinan, China
| | - Guirong Wang
- Department of Surgery, SUNY Upstate Medical University, Syracuse, NY, United States
| | - Chunting Wang
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Xiaosun Guo
- Department of Physiology and Pathophysiology, School of Basic Medicine, Shandong University, Jinan, China
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16
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Wei S, Wang S, Yang M, Huang Y, Wei J, Huang X, Qin Q. Characterization of cathepsin C from orange-spotted grouper, Epinephelus coioides involved in SGIV infection. FISH & SHELLFISH IMMUNOLOGY 2019; 84:423-433. [PMID: 30308297 DOI: 10.1016/j.fsi.2018.10.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 08/26/2018] [Accepted: 10/07/2018] [Indexed: 06/08/2023]
Abstract
The lysosomal cysteine protease cathepsin C plays a pivotal role in regulation of inflammatory and immune responses. However, the function of fish cathepsin C in virus replication remains largely unknown. In this study, cathepsin C gene (Ec-CC) was cloned and characterized from orange-spotted grouper, Epinephelus coioides. The full-length Ec-CC cDNA was composed of 2077 bp. It contained an open reading frame (ORF) of 1374 bp and encoded a 458-amino acid protein which shared 89% identity to cathepsin C from bicolor damselfish (Stegastes partitus). Amino acid alignment analysis showed that Ec-CC contained an N-terminal signal peptide, the propeptide region and the mature peptide. RT-PCR analysis showed that Ec-CC transcript was expressed in all the examined tissues which abundant in spleen and head kidney. After challenged with Singapore grouper iridovirus (SGIV) stimulation, the relative expression of EC-CC was significantly increased at 24 h post-infection. Subcellular localization analysis revealed that Ec-CC was distributed mainly in the cytoplasm. Further studies showed that overexpression of Ec-CC in vitro significantly delayed the cytopathic effect (CPE) progression evoked by SGIV and inhibited the viral genes transcription. Moreover, overexpression of Ec-CC significantly increased the expression of proinflammatory cytokines during SGIV infection. Taken together, our results demonstrated that Ec-CC might play a functional role in SGIV infection by regulating the inflammation response.
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Affiliation(s)
- Shina Wei
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Shaowen Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Min Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Youhua Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jingguang Wei
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaohong Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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17
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Gang Liu Y, Teng YS, Cheng P, Kong H, Lv PY, Mao FY, Wu XL, Hao CJ, Chen W, Yang SM, Zhang JY, Peng LS, Wang TT, Han B, Ma Q, Zou QM, Zhuang AY. Abrogation of cathepsin C by
Helicobacter pylori
impairs neutrophil activation to promote gastric infection. FASEB J 2018; 33:5018-5033. [DOI: 10.1096/fj.201802016rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yu Gang Liu
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Yong Sheng Teng
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Ping Cheng
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Hui Kong
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Pin Yi Lv
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Fang Yuan Mao
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Xiao Long Wu
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Chuan Jie Hao
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Weisan Chen
- La Trobe Institute of Molecular ScienceLa Trobe University Bundoora Victoria Australia
| | - Shi Ming Yang
- Department of GastroenterologyXinQiao HospitalThird Military Medical University Chongqing China
| | - Jin Yu Zhang
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Liu Sheng Peng
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Ting Ting Wang
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - Bin Han
- Department of PharmacyAffiliated Hospital of North Sichuan Medical College Nanchong China
| | - Qiang Ma
- Department of Clinical LaboratoryAffiliated Hospital of North Sichuan Medical College Nanchong China
| | - Quan Ming Zou
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
| | - And Yuan Zhuang
- Department of Microbiology and Biochemical PharmacyNational Engineering Research Centre of Immunological ProductsCollege of Pharmacy Chongqing China
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18
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Korkmaz B, Caughey GH, Chapple I, Gauthier F, Hirschfeld J, Jenne DE, Kettritz R, Lalmanach G, Lamort AS, Lauritzen C, Łȩgowska M, Lesner A, Marchand-Adam S, McKaig SJ, Moss C, Pedersen J, Roberts H, Schreiber A, Seren S, Thakker NS. Therapeutic targeting of cathepsin C: from pathophysiology to treatment. Pharmacol Ther 2018; 190:202-236. [DOI: 10.1016/j.pharmthera.2018.05.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Khedr MEMS, Abdelmotelb AM, Pender SLF, Zhou X, Walls AF. Neutrophilia, gelatinase release and microvascular leakage induced by human mast cell tryptase in a mouse model: Lack of a role of protease-activated receptor 2 (PAR2). Clin Exp Allergy 2018; 48:555-567. [PMID: 29383785 PMCID: PMC5969079 DOI: 10.1111/cea.13108] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 01/20/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Tryptase, the most abundant protease of the human mast cell, has been implicated as a key mediator of allergic inflammation that acts through activation of PAR2. OBJECTIVES To investigate the contribution of PAR2 in the pro-inflammatory actions mediated by tryptase in a mice model. METHODS We have injected recombinant human βII-tryptase into the peritoneum of PAR2-deficient and wild-type C57BL/6 mice. After 6, 12 and 24 hours, mice were killed, peritoneal lavage performed and inflammatory changes investigated. RESULTS Tryptase stimulated an increase in neutrophil numbers in the peritoneum, but responses did not differ between PAR2-deficient and wild-type mice. Heat inactivation of tryptase or pre-incubation with a selective tryptase inhibitor reduced neutrophilia, but neutrophil accumulation was not elicited with a peptide agonist of PAR2 (SLIGRL-NH2 ). Zymography indicated that tryptase stimulated the release of matrix metalloproteinases (MMP) 2 and 9 in the peritoneum of both mouse strains. Studies involving immunomagnetic isolation of neutrophils suggested that neutrophils represent the major cellular source of tryptase-induced MMP2 and MMP9. At 24 hours after tryptase injection, there was increased microvascular leakage as indicated by high levels of albumin in peritoneal lavage fluid, and this appeared to be partially abolished by heat-inactivating tryptase or addition of a protease inhibitor. There was no corresponding increase in levels of histamine or total protein. The extent of tryptase-induced microvascular leakage or gelatinase release into the peritoneum did not differ between PAR2-deficient and wild-type mice. CONCLUSIONS Our findings indicate that tryptase is a potent stimulus for neutrophil accumulation, MMP release and microvascular leakage. Although these actions required an intact catalytic site, the primary mechanism of tryptase in vivo would appear to involve processes independent of PAR2.
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Affiliation(s)
- M. E. M. S. Khedr
- Clinical and Experimental Sciences Academic UnitFaculty of MedicineUniversity of SouthamptonSouthamptonUK
- Faculty of MedicineSuez Canal UniversityIsmailiaEgypt
| | - A. M. Abdelmotelb
- Clinical and Experimental Sciences Academic UnitFaculty of MedicineUniversity of SouthamptonSouthamptonUK
- Faculty of MedicineTanta UniversityTantaEgypt
| | - S. L. F. Pender
- Clinical and Experimental Sciences Academic UnitFaculty of MedicineUniversity of SouthamptonSouthamptonUK
| | - X. Zhou
- Clinical and Experimental Sciences Academic UnitFaculty of MedicineUniversity of SouthamptonSouthamptonUK
| | - A. F. Walls
- Clinical and Experimental Sciences Academic UnitFaculty of MedicineUniversity of SouthamptonSouthamptonUK
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20
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Bakthavatchalu V, Wert KJ, Feng Y, Mannion A, Ge Z, Garcia A, Scott KE, Caron TJ, Madden CM, Jacobsen JT, Victora G, Jaenisch R, Fox JG. Cytotoxic Escherichia coli strains encoding colibactin isolated from immunocompromised mice with urosepsis and meningitis. PLoS One 2018; 13:e0194443. [PMID: 29554148 PMCID: PMC5858775 DOI: 10.1371/journal.pone.0194443] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 03/02/2018] [Indexed: 01/19/2023] Open
Abstract
Immune-compromised mouse models allow for testing the preclinical efficacy of human cell transplantations and gene therapy strategies before moving forward to clinical trials. However, CRISPR/Cas9 gene editing of the Wsh/Wsh mouse strain to create an immune-compromised model lacking function of Rag2 and Il2rγ led to unexpected morbidity and mortality. This warranted an investigation to ascertain the cause and predisposing factors associated with the outbreak. Postmortem examination was performed on 15 moribund mice. The main lesions observed in these mice consisted of ascending urogenital tract infections, suppurative otitis media, pneumonia, myocarditis, and meningoencephalomyelitis. As Escherichia coli strains harboring polyketide synthase (pks) genomic island were recently isolated from laboratory mice, the tissue sections from the urogenital tract, heart, and middle ear were subjected to E. coli specific PNA-FISH assay that revealed discrete colonies of E. coli associated with the lesions. Microbiological examination and 16S rRNA sequencing confirmed E. coli-induced infection and septicemia in the affected mice. Further characterization by clb gene analysis and colibactin toxicity assays of the pks+ E. coli revealed colibactin-associated cytotoxicity. Rederivation of the transgenic mice using embryo transfer produced mice with an intestinal flora devoid of pks+ E. coli. Importantly, these barrier-maintained rederived mice have produced multiple litters without adverse health effects. This report is the first to describe acute morbidity and mortality associated with pks+ E. coli urosepsis and meningitis in immunocompromised mice, and highlights the importance of monitoring and exclusion of colibactin-producing pks+ E. coli.
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Affiliation(s)
- Vasudevan Bakthavatchalu
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Katherine J. Wert
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Anthony Mannion
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Zhongming Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Alexis Garcia
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Kathleen E. Scott
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Tyler J. Caron
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Carolyn M. Madden
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Johanne T. Jacobsen
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Gabriel Victora
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Rudolf Jaenisch
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - James G. Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail:
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21
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Mast Cells: Key Contributors to Cardiac Fibrosis. Int J Mol Sci 2018; 19:ijms19010231. [PMID: 29329223 PMCID: PMC5796179 DOI: 10.3390/ijms19010231] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/21/2017] [Accepted: 12/22/2017] [Indexed: 12/11/2022] Open
Abstract
Historically, increased numbers of mast cells have been associated with fibrosis in numerous cardiac pathologies, implicating mast cells in the development of cardiac fibrosis. Subsequently, several approaches have been utilised to demonstrate a causal role for mast cells in animal models of cardiac fibrosis including mast cell stabilising compounds, rodents deficient in mast cells, and inhibition of the actions of mast cell-specific proteases such as chymase and tryptase. Whilst most evidence supports a pro-fibrotic role for mast cells, there is evidence that in some settings these cells can oppose fibrosis. A major gap in our current understanding of cardiac mast cell function is identification of the stimuli that activate these cells causing them to promote a pro-fibrotic environment. This review will present the evidence linking mast cells to cardiac fibrosis, as well as discuss the major questions that remain in understanding how mast cells contribute to cardiac fibrosis.
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22
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Bowden TJ, Bricknell IR, Preziosi BM. Comparative pathogenicity of Vibrio spp., Photobacterium damselae ssp. damselae and five isolates of Aeromonas salmonicida ssp. achromogenes in juvenile Atlantic halibut (Hippoglossus hippoglossus). JOURNAL OF FISH DISEASES 2018; 41:79-86. [PMID: 28731211 DOI: 10.1111/jfd.12679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 06/07/2023]
Abstract
Juvenile Atlantic halibut (~100 mg, Hippoglossus hippoglossus) were exposed to Vibrio proteolyticus, a Vibrio spp. isolate, Photobacterium damselae ssp. damselae and five different isolates of Aeromonas salmonicida ssp. achromogenes via an hour-long bath immersion to ascertain their variation in pathogenicity to this fish species. Results were analysed using Kaplan-Meier survival analysis. Analysis of the data from challenges using A. salmonicida ssp. achromogenes revealed three survival values of zero and a spread of values from 0 to 28.43. Challenges using a Vibrio spp isolate, V. proteolyticus and P. damselae resulted in Kaplan-Meier survival estimates of 31.21, 50.41 and 57.21, respectively. As all bacterial species tested could induce juvenile halibut mortalities, they must all be considered as potential pathogens. However, the degree of pathogenicity of A. salmonicida is isolate dependent.
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Affiliation(s)
- T J Bowden
- School of Food and Agriculture, Aquaculture Research Institute, University of Maine, Orono, ME, USA
| | - I R Bricknell
- School of Marine Science, Aquaculture Research Institute, University of Maine, Orono, ME, USA
| | - B M Preziosi
- School of Food and Agriculture, Aquaculture Research Institute, University of Maine, Orono, ME, USA
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Cathepsin C Aggravates Neuroinflammation Involved in Disturbances of Behaviour and Neurochemistry in Acute and Chronic Stress-Induced Murine Model of Depression. Neurochem Res 2018. [DOI: 10.1007/s11064-017-2320-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Kuusela P, Saraswat M, Joenväärä S, Kaartinen J, Järvinen A, Renkonen R. Changes in plasma protein levels as an early indication of a bloodstream infection. PLoS One 2017; 12:e0172987. [PMID: 28235076 PMCID: PMC5325609 DOI: 10.1371/journal.pone.0172987] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 02/13/2017] [Indexed: 12/29/2022] Open
Abstract
Blood culture is the primary diagnostic test performed in a suspicion of bloodstream infection to detect the presence of microorganisms and direct the treatment. However, blood culture is slow and time consuming method to detect blood stream infections or separate septic and/or bacteremic patients from others with less serious febrile disease. Plasma proteomics, despite its challenges, remains an important source for early biomarkers for systemic diseases and might show changes before direct evidence from bacteria can be obtained. We have performed a plasma proteomic analysis, simultaneously at the time of blood culture sampling from ten blood culture positive and ten blood culture negative patients, and quantified 172 proteins with two or more unique peptides. Principal components analysis, Orthogonal Projections to Latent Structures Discriminant Analysis (OPLS-DA) and ROC curve analysis were performed to select protein(s) features which can classify the two groups of samples. We propose a number of candidates which qualify as potential biomarkers to select the blood culture positive cases from negative ones. Pathway analysis by two methods revealed complement activation, phagocytosis pathway and alterations in lipid metabolism as enriched pathways which are relevant for the condition. Data are available via ProteomeXchange with identifier PXD005022.
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Affiliation(s)
- Pentti Kuusela
- Division of Clinical Microbiology, HUSLAB, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | - Mayank Saraswat
- Transplantation laboratory, Haartmaninkatu 3, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Sakari Joenväärä
- Transplantation laboratory, Haartmaninkatu 3, University of Helsinki, Helsinki, Finland
- HUSLAB, Helsinki University Hospital, Helsinki, Finland
| | - Johanna Kaartinen
- Emergency Medicine and Services, Helsinki University Hospital, Helsinki, Finland
| | - Asko Järvinen
- Division of Infectious Diseases, HUH Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Risto Renkonen
- Transplantation laboratory, Haartmaninkatu 3, University of Helsinki, Helsinki, Finland
- HUSLAB, Helsinki University Hospital, Helsinki, Finland
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Łęgowska M, Hamon Y, Wojtysiak A, Grzywa R, Sieńczyk M, Burster T, Korkmaz B, Lesner A. Development of the first internally-quenched fluorescent substrates of human cathepsin C: The application in the enzyme detection in biological samples. Arch Biochem Biophys 2016; 612:91-102. [DOI: 10.1016/j.abb.2016.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 10/11/2016] [Indexed: 11/26/2022]
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Akk A, Springer LE, Pham CTN. Neutrophil Extracellular Traps Enhance Early Inflammatory Response in Sendai Virus-Induced Asthma Phenotype. Front Immunol 2016; 7:325. [PMID: 27617014 PMCID: PMC4999646 DOI: 10.3389/fimmu.2016.00325] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/15/2016] [Indexed: 12/30/2022] Open
Abstract
Paramyxoviral infection in childhood has been linked to a significant increased rate of asthma development. In mice, paramyxoviral infection with the mouse parainfluenza virus type I, Sendai virus (Sev), causes a limited bronchiolitis followed by persistent asthma traits. We have previously shown that the absence of cysteine protease dipeptidyl peptidase I (DPPI) dampened the acute lung inflammatory response and the subsequent asthma phenotype induced by Sev. Adoptive transfer of wild-type neutrophils into DPPI-deficient mice restored leukocyte influx, the acute cytokine response, and the subsequent mucous cell metaplasia that accompanied Sev-induced asthma phenotype. However, the exact mechanism by which DPPI-sufficient neutrophils promote asthma development following Sev infection is still unknown. We hypothesize that neutrophils recruited to the alveolar space following Sev infection elaborate neutrophil extracellular traps (NETs) that propagate the inflammatory cascade, culminating in the eventual asthma phenotype. Indeed, we found that Sev infection was associated with NET formation in the lung and release of cell-free DNA complexed to myeloperoxidase in the alveolar space and plasma that peaked on day 2 post infection. Absence of DPPI significantly attenuated Sev-induced NET formation in vivo and in vitro. Furthermore, concomitant administration of DNase 1, which dismantled NETs, or inhibition of peptidylarginine deiminase 4 (PAD4), an essential mediator of NET formation, suppressed the early inflammatory responses to Sev infection. Lastly, NETs primed bone marrow-derived cells to release cytokines that can amplify the inflammatory cascade.
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Affiliation(s)
- Antonina Akk
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine , Saint Louis, MO , USA
| | - Luke E Springer
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine , Saint Louis, MO , USA
| | - Christine T N Pham
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine , Saint Louis, MO , USA
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Shi Z, Chapes SK, Ben-Arieh D, Wu CH. An Agent-Based Model of a Hepatic Inflammatory Response to Salmonella: A Computational Study under a Large Set of Experimental Data. PLoS One 2016; 11:e0161131. [PMID: 27556404 PMCID: PMC4996536 DOI: 10.1371/journal.pone.0161131] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 07/29/2016] [Indexed: 01/04/2023] Open
Abstract
We present an agent-based model (ABM) to simulate a hepatic inflammatory response (HIR) in a mouse infected by Salmonella that sometimes progressed to problematic proportions, known as "sepsis". Based on over 200 published studies, this ABM describes interactions among 21 cells or cytokines and incorporates 226 experimental data sets and/or data estimates from those reports to simulate a mouse HIR in silico. Our simulated results reproduced dynamic patterns of HIR reported in the literature. As shown in vivo, our model also demonstrated that sepsis was highly related to the initial Salmonella dose and the presence of components of the adaptive immune system. We determined that high mobility group box-1, C-reactive protein, and the interleukin-10: tumor necrosis factor-α ratio, and CD4+ T cell: CD8+ T cell ratio, all recognized as biomarkers during HIR, significantly correlated with outcomes of HIR. During therapy-directed silico simulations, our results demonstrated that anti-agent intervention impacted the survival rates of septic individuals in a time-dependent manner. By specifying the infected species, source of infection, and site of infection, this ABM enabled us to reproduce the kinetics of several essential indicators during a HIR, observe distinct dynamic patterns that are manifested during HIR, and allowed us to test proposed therapy-directed treatments. Although limitation still exists, this ABM is a step forward because it links underlying biological processes to computational simulation and was validated through a series of comparisons between the simulated results and experimental studies.
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Affiliation(s)
- Zhenzhen Shi
- Health Care Operations Resource Center, Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, Kansas, United States of America
| | - Stephen K. Chapes
- Division of Biology, Kansas State University, Manhattan, Kansas, United States of America
| | - David Ben-Arieh
- Health Care Operations Resource Center, Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, Kansas, United States of America
| | - Chih-Hang Wu
- Health Care Operations Resource Center, Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, Kansas, United States of America
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Khaket TP, Dhanda S, Jodha D, Singh J. Biochemical studies on dipeptidyl peptidase I (cathepsin C) from germinated Vigna radiata seeds. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Shubin NJ, Glukhova VA, Clauson M, Truong P, Abrink M, Pejler G, White NJ, Deutsch GH, Reeves SR, Vaisar T, James RG, Piliponsky AM. Proteome analysis of mast cell releasates reveals a role for chymase in the regulation of coagulation factor XIIIA levels via proteolytic degradation. J Allergy Clin Immunol 2016; 139:323-334. [PMID: 27302551 DOI: 10.1016/j.jaci.2016.03.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/03/2016] [Accepted: 03/17/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Mast cells are significantly involved in IgE-mediated allergic reactions; however, their roles in health and disease are incompletely understood. OBJECTIVE We aimed to define the proteome contained in mast cell releasates on activation to better understand the factors secreted by mast cells that are relevant to the contribution of mast cells in diseases. METHODS Bone marrow-derived cultured mast cells (BMCMCs) and peritoneal cell-derived mast cells were used as "surrogates" for mucosal and connective tissue mast cells, respectively, and their releasate proteomes were analyzed by mass spectrometry. RESULTS Our studies showed that BMCMCs and peritoneal cell-derived mast cells produced substantially different releasates following IgE-mediated activation. Moreover, we observed that the transglutaminase coagulation factor XIIIA (FXIIIA) was one of the most abundant proteins contained in the BMCMC releasates. Mast cell-deficient mice exhibited increased FXIIIA plasma and activity levels as well as reduced bleeding times, indicating that mast cells are more efficient in their ability to downregulate FXIIIA than in contributing to its amounts and functions in homeostatic conditions. We found that human chymase and mouse mast cell protease-4 (the mouse homologue of human chymase) had the ability to reduce FXIIIA levels and function via proteolytic degradation. Moreover, we found that chymase deficiency led to increased FXIIIA amounts and activity, as well as reduced bleeding times in homeostatic conditions and during sepsis. CONCLUSIONS Our study indicates that the mast cell protease content can shape its releasate proteome. Moreover, we found that chymase plays an important role in the regulation of FXIIIA via proteolytic degradation.
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Affiliation(s)
- Nicholas J Shubin
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Veronika A Glukhova
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Morgan Clauson
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Phuong Truong
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Magnus Abrink
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University for Agricultural Sciences, Uppsala, Sweden
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden; Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Nathan J White
- Division of Emergency Medicine, Department of Medicine, University of Washington, Seattle, Wash
| | - Gail H Deutsch
- Department of Laboratories, Seattle Children's Research Institute, Seattle, Wash
| | - Stephen R Reeves
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash
| | - Tomas Vaisar
- Division of Metabolism, Endocrinology, and Nutrition, Department of Medicine, University of Washington, Seattle, Wash
| | - Richard G James
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Adrian M Piliponsky
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash.
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Vangansewinkel T, Geurts N, Quanten K, Nelissen S, Lemmens S, Geboes L, Dooley D, Vidal PM, Pejler G, Hendrix S. Mast cells promote scar remodeling and functional recovery after spinal cord injury via mouse mast cell protease 6. FASEB J 2016; 30:2040-57. [PMID: 26917739 DOI: 10.1096/fj.201500114r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/28/2016] [Indexed: 12/12/2022]
Abstract
An important barrier for axon regeneration and recovery after traumatic spinal cord injury (SCI) is attributed to the scar that is formed at the lesion site. Here, we investigated the effect of mouse mast cell protease (mMCP) 6, a mast cell (MC)-specific tryptase, on scarring and functional recovery after a spinal cord hemisection injury. Functional recovery was significantly impaired in both MC-deficient and mMCP6-knockout (mMCP6(-/-)) mice after SCI compared with wild-type control mice. This decrease in locomotor performance was associated with an increased lesion size and excessive scarring at the injury site. Axon growth-inhibitory chondroitin sulfate proteoglycans and the extracellular matrix components fibronectin, laminin, and collagen IV were significantly up-regulated in MC-deficient and mMCP6(-/-) mice, with an increase in scar volume between 23 and 32%. A degradation assay revealed that mMCP6 directly cleaves fibronectin and collagen IV in vitro In addition, gene expression levels of the scar components fibronectin, aggrecan, and collagen IV were increased up to 6.8-fold in mMCP6(-/-) mice in the subacute phase after injury. These data indicate that endogenous mMCP6 has scar-suppressing properties after SCI via indirect cleavage of axon growth-inhibitory scar components and alteration of the gene expression profile of these factors.-Vangansewinkel, T., Geurts, N., Quanten, K., Nelissen, S., Lemmens, S., Geboes, L., Dooley, D., Vidal, P. M., Pejler, G., Hendrix, S. Mast cells promote scar remodeling and functional recovery after spinal cord injury via mouse mast cell protease 6.
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Affiliation(s)
- Tim Vangansewinkel
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Nathalie Geurts
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Kirsten Quanten
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Sofie Nelissen
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Stefanie Lemmens
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Lies Geboes
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Dearbhaile Dooley
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Pia M Vidal
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Gunnar Pejler
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden; and Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Sven Hendrix
- Department of Morphology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium;
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31
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Hamon Y, Legowska M, Hervé V, Dallet-Choisy S, Marchand-Adam S, Vanderlynden L, Demonte M, Williams R, Scott CJ, Si-Tahar M, Heuzé-Vourc'h N, Lalmanach G, Jenne DE, Lesner A, Gauthier F, Korkmaz B. Neutrophilic Cathepsin C Is Maturated by a Multistep Proteolytic Process and Secreted by Activated Cells during Inflammatory Lung Diseases. J Biol Chem 2016; 291:8486-99. [PMID: 26884336 DOI: 10.1074/jbc.m115.707109] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Indexed: 11/06/2022] Open
Abstract
The cysteine protease cathepsin C (CatC) activates granule-associated proinflammatory serine proteases in hematopoietic precursor cells. Its early inhibition in the bone marrow is regarded as a new therapeutic strategy for treating proteolysis-driven chronic inflammatory diseases, but its complete inhibition is elusive in vivo Controlling the activity of CatC may be achieved by directly inhibiting its activity with a specific inhibitor or/and by preventing its maturation. We have investigated immunochemically and kinetically the occurrence of CatC and its proform in human hematopoietic precursor cells and in differentiated mature immune cells in lung secretions. The maturation of proCatC obeys a multistep mechanism that can be entirely managed by CatS in neutrophilic precursor cells. CatS inhibition by a cell-permeable inhibitor abrogated the release of the heavy and light chains from proCatC and blocked ∼80% of CatC activity. Under these conditions the activity of neutrophil serine proteases, however, was not abolished in precursor cell cultures. In patients with neutrophilic lung inflammation, mature CatC is found in large amounts in sputa. It is secreted by activated neutrophils as confirmed through lipopolysaccharide administration in a nonhuman primate model. CatS inhibitors currently in clinical trials are expected to decrease the activity of neutrophilic CatC without affecting those of elastase-like serine proteases.
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Affiliation(s)
- Yveline Hamon
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France, Comprehensive Pneumology Center, Institute of Lung Biology and Disease, German Center for Lung Research (DZL), 81377 Munich and Max Planck Institute of Neurobiology, 82152 Planegg-Martinsried, Germany
| | - Monika Legowska
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Virginie Hervé
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Sandrine Dallet-Choisy
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Sylvain Marchand-Adam
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Lise Vanderlynden
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Michèle Demonte
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Rich Williams
- Queen's University Belfast, Lisburn Road, Belfast, BT9 7BL, United Kingdom, and
| | - Christopher J Scott
- Queen's University Belfast, Lisburn Road, Belfast, BT9 7BL, United Kingdom, and
| | - Mustapha Si-Tahar
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Nathalie Heuzé-Vourc'h
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Gilles Lalmanach
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Dieter E Jenne
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, German Center for Lung Research (DZL), 81377 Munich and Max Planck Institute of Neurobiology, 82152 Planegg-Martinsried, Germany
| | - Adam Lesner
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Francis Gauthier
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Brice Korkmaz
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France,
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Johnzon CF, Rönnberg E, Pejler G. The Role of Mast Cells in Bacterial Infection. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:4-14. [DOI: 10.1016/j.ajpath.2015.06.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/17/2015] [Accepted: 06/24/2015] [Indexed: 01/21/2023]
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Waern I, Karlsson I, Pejler G, Wernersson S. IL-6 and IL-17A degradation by mast cells is mediated by a serglycin:serine protease axis. IMMUNITY INFLAMMATION AND DISEASE 2015; 4:70-9. [PMID: 27042303 PMCID: PMC4768062 DOI: 10.1002/iid3.95] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/13/2015] [Accepted: 11/18/2015] [Indexed: 01/04/2023]
Abstract
Mast cells contain large amounts of fully active proteases that are stored in complex with serglycin proteoglycan in their secretory granules. Upon degranulation, such serglycin:protease complexes are released to the extracellular space and can potentially have an impact on the local inflammatory reaction, either through direct effects of serglycin proteoglycan or through effects mediated by its bound proteases. The objective of this study was to address this scenario by investigating the possibility that serglycin‐associated proteases can regulate levels of pro‐inflammatory cytokines. Indeed, we show here that activated cultured peritoneal mast cells from wild type mice efficiently reduced the levels of exogenously administered IL‐6 and IL‐17A, whereas serglycin‐deficient mast cells lacked this ability. Furthermore, our data suggest that the reduction of IL‐6 and IL‐17A concentrations is due to proteolytic degradation mediated by serglycin‐dependent serine proteases. Moreover, we show that activated mast cells have the capacity to release IL‐6 and that the levels of this cytokine in supernatants were markedly higher in cultures of serglycin‐deficient versus serglycin‐sufficient mast cells, suggesting that serglycin‐dependent serine proteases also participate in the regulation of endogenously produced IL‐6. In summary, although the general consensus is that mast cells have a pathogenic impact on inflammatory settings, this study identifies a role for a mast cell‐derived serglycin:serine protease axis in down‐regulating levels of major inflammatory cytokines. These findings support the notion that mast cells could have a dual role in inflammatory settings, by both being able to secrete pathogenic compounds and being able to regulate their levels after release.
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Affiliation(s)
- Ida Waern
- Department of Anatomy, Physiology, and Biochemistry Swedish University of Agricultural Sciences Uppsala SE-75007 Sweden
| | - Iulia Karlsson
- Department of Anatomy, Physiology, and Biochemistry Swedish University of Agricultural Sciences Uppsala SE-75007 Sweden
| | - Gunnar Pejler
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesUppsalaSE-75007Sweden; Department of Medical Biochemistry and MicrobiologyUppsala UniversityUppsalaSE-75123Sweden
| | - Sara Wernersson
- Department of Anatomy, Physiology, and Biochemistry Swedish University of Agricultural Sciences Uppsala SE-75007 Sweden
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Chu YT, Wan SW, Anderson R, Lin YS. Mast cell-macrophage dynamics in modulation of dengue virus infection in skin. Immunology 2015; 146:163-72. [PMID: 26059780 DOI: 10.1111/imm.12492] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 01/08/2023] Open
Abstract
Dengue virus (DENV) infection causes dengue fever, dengue haemorrhagic fever, or dengue shock syndrome. Mast cells have been speculated to play a role in DENV disease although their precise roles are unclear. In this study, we used mast cell-deficient Kit(W-sh/W-sh) mice to investigate the involvement of mast cells after intradermal DENV infection. An approximately two- to three-fold higher level of DENV NS3 antigen was detected at the skin inoculation site in DENV-infected Kit(W-sh/W-sh) mice than in DENV-infected wild-type (WT) mice (using a dose of 1 × 10(9) plaque-forming units/mouse). Moreover, as an indicator of heightened pathogenesis, a more prolonged bleeding time was observed in DENV-infected Kit(W-sh/W-sh) mice than in WT mice. Monocytes/macrophages are considered to be important targets for DENV infection, so we investigated the susceptibility and chemokine response of DENV-infected peritoneal macrophages from Kit(W-sh/W-sh) and WT mice both ex vivo and in vivo. There was a tendency for higher DENV infection and higher secretion of CCL2 (MCP-1) from peritoneal macrophages isolated from Kit(W-sh/W-sh) mice than those from WT mice. In vivo studies using intradermal inoculation of DENV showed about twofold higher levels of infiltrating macrophages and CCL2 (MCP-1) at the inoculation site in both mock control and DENV-inoculated Kit(W-sh/W-sh) mice than in corresponding WT mice. In summary, compared with WT mice, Kit(W-sh/W-sh) mice show enhanced DENV infection and macrophage infiltration at the skin inoculation site as well as increased DENV-associated bleeding time. The results indicate an intriguing interplay between mast cells and tissue macrophages to restrict DENV replication in the skin.
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Affiliation(s)
- Ya-Ting Chu
- Department of Microbiology and Immunology, National Cheng Kung University Medical College, Tainan, Taiwan
| | - Shu-Wen Wan
- Department of Microbiology and Immunology, National Cheng Kung University Medical College, Tainan, Taiwan.,Centre of Infectious Disease and Signalling Research, National Cheng Kung University, Tainan, Taiwan
| | - Robert Anderson
- Departments of Microbiology & Immunology and Paediatrics and Canadian Centre for Vaccinology, Dalhousie University, Halifax, Canada
| | - Yee-Shin Lin
- Department of Microbiology and Immunology, National Cheng Kung University Medical College, Tainan, Taiwan.,Centre of Infectious Disease and Signalling Research, National Cheng Kung University, Tainan, Taiwan
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Mast cell proteases as pharmacological targets. Eur J Pharmacol 2015; 778:44-55. [PMID: 25958181 DOI: 10.1016/j.ejphar.2015.04.045] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/27/2015] [Accepted: 04/07/2015] [Indexed: 12/26/2022]
Abstract
Mast cells are rich in proteases, which are the major proteins of intracellular granules and are released with histamine and heparin by activated cells. Most of these proteases are active in the granule as well as outside of the mast cell when secreted, and can cleave targets near degranulating mast cells and in adjoining tissue compartments. Some proteases released from mast cells reach the bloodstream and may have far-reaching actions. In terms of relative amounts, the major mast cell proteases include the tryptases, chymases, cathepsin G, carboxypeptidase A3, dipeptidylpeptidase I/cathepsin C, and cathepsins L and S. Some mast cells also produce granzyme B, plasminogen activators, and matrix metalloproteinases. Tryptases and chymases are almost entirely mast cell-specific, whereas other proteases, such as cathepsins G, C, and L are expressed by a variety of inflammatory cells. Carboxypeptidase A3 expression is a property shared by basophils and mast cells. Other proteases, such as mastins, are largely basophil-specific, although human basophils are protease-deficient compared with their murine counterparts. The major classes of mast cell proteases have been targeted for development of therapeutic inhibitors. Also, a human β-tryptase has been proposed as a potential drug itself, to inactivate of snake venins. Diseases linked to mast cell proteases include allergic diseases, such as asthma, eczema, and anaphylaxis, but also include non-allergic diseases such as inflammatory bowel disease, autoimmune arthritis, atherosclerosis, aortic aneurysms, hypertension, myocardial infarction, heart failure, pulmonary hypertension and scarring diseases of lungs and other organs. In some cases, studies performed in mouse models suggest protective or homeostatic roles for specific proteases (or groups of proteases) in infections by bacteria, worms and other parasites, and even in allergic inflammation. At the same time, a clearer picture has emerged of differences in the properties and patterns of expression of proteases expressed in human mast cell subsets, and in humans versus other mammals. These considerations are influencing prioritization of specific protease targets for therapeutic inhibition, as well as options of pre-clinical models, disease indications, and choice of topical versus systemic routes of inhibitor administration.
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Reber LL, Sibilano R, Mukai K, Galli SJ. Potential effector and immunoregulatory functions of mast cells in mucosal immunity. Mucosal Immunol 2015; 8:444-63. [PMID: 25669149 PMCID: PMC4739802 DOI: 10.1038/mi.2014.131] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 11/27/2014] [Indexed: 02/04/2023]
Abstract
Mast cells (MCs) are cells of hematopoietic origin that normally reside in mucosal tissues, often near epithelial cells, glands, smooth muscle cells, and nerves. Best known for their contributions to pathology during IgE-associated disorders such as food allergy, asthma, and anaphylaxis, MCs are also thought to mediate IgE-associated effector functions during certain parasite infections. However, various MC populations also can be activated to express functional programs--such as secreting preformed and/or newly synthesized biologically active products--in response to encounters with products derived from diverse pathogens, other host cells (including leukocytes and structural cells), damaged tissue, or the activation of the complement or coagulation systems, as well as by signals derived from the external environment (including animal toxins, plant products, and physical agents). In this review, we will discuss evidence suggesting that MCs can perform diverse effector and immunoregulatory roles that contribute to homeostasis or pathology in mucosal tissues.
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Affiliation(s)
- Laurent L Reber
- Department of Pathology, Stanford University, School of Medicine, Stanford, California 94305-5324, USA
| | - Riccardo Sibilano
- Department of Pathology, Stanford University, School of Medicine, Stanford, California 94305-5324, USA
| | - Kaori Mukai
- Department of Pathology, Stanford University, School of Medicine, Stanford, California 94305-5324, USA
| | - Stephen J Galli
- Department of Pathology, Stanford University, School of Medicine, Stanford, California 94305-5324, USA,Department of Microbiology & Immunology, Stanford University, School of Medicine, Stanford, California 94305-5324, USA
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Galli SJ, Tsai M, Marichal T, Tchougounova E, Reber LL, Pejler G. Approaches for analyzing the roles of mast cells and their proteases in vivo. Adv Immunol 2015; 126:45-127. [PMID: 25727288 DOI: 10.1016/bs.ai.2014.11.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The roles of mast cells in health and disease remain incompletely understood. While the evidence that mast cells are critical effector cells in IgE-dependent anaphylaxis and other acute IgE-mediated allergic reactions seems unassailable, studies employing various mice deficient in mast cells or mast cell-associated proteases have yielded divergent conclusions about the roles of mast cells or their proteases in certain other immunological responses. Such "controversial" results call into question the relative utility of various older versus newer approaches to ascertain the roles of mast cells and mast cell proteases in vivo. This review discusses how both older and more recent mouse models have been used to investigate the functions of mast cells and their proteases in health and disease. We particularly focus on settings in which divergent conclusions about the importance of mast cells and their proteases have been supported by studies that employed different models of mast cell or mast cell protease deficiency. We think that two major conclusions can be drawn from such findings: (1) no matter which models of mast cell or mast cell protease deficiency one employs, the conclusions drawn from the experiments always should take into account the potential limitations of the models (particularly abnormalities affecting cell types other than mast cells) and (2) even when analyzing a biological response using a single model of mast cell or mast cell protease deficiency, details of experimental design are critical in efforts to define those conditions under which important contributions of mast cells or their proteases can be identified.
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Affiliation(s)
- Stephen J Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA; Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, USA.
| | - Mindy Tsai
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
| | - Thomas Marichal
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA; GIGA-Research and Faculty of Veterinary Medicine, University of Liege, Liege, Belgium
| | - Elena Tchougounova
- Department of Immunology, Genetics, and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Laurent L Reber
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden; Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Herías V, Biessen EAL, Beckers C, Delsing D, Liao M, Daemen MJ, Pham CCTN, Heeneman S. Leukocyte cathepsin C deficiency attenuates atherosclerotic lesion progression by selective tuning of innate and adaptive immune responses. Arterioscler Thromb Vasc Biol 2014; 35:79-86. [PMID: 25395616 DOI: 10.1161/atvbaha.114.304292] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The protein degrading activity of cathepsin C (CatC), combined with its role in leukocyte granule activation, suggests a contribution of this cystein protease in atherosclerosis. However, no experimental data are available to validate this concept. APPROACH AND RESULTS CatC gene and protein expression were increased in ruptured versus advanced stable human carotid artery lesions. To assess causal involvement of CatC in plaque progression and stability, we generated LDLr(-/-)//CatC(-/-) chimeras by bone marrow transplantation. CatC(-/-) chimeras presented attenuated plaque burden in carotids, descending aorta, aortic arch and root, at both the early and advanced plaque stage. CatC was abundantly expressed by plaque macrophages and foam cells. CatC expression and activity were dramatically downregulated in plaques of CatC(-/-) chimeras, supporting a hematopoietic origin of plaque CatC. Our studies unveiled an unexpected feedback of CatC deficiency on macrophage activation programs and T helper cell differentiation in as much as that CatC expression was upregulated in M1 macrophages, whereas its deficiency led to combined M2 (in vitro) and Th2 polarization (in vivo). CONCLUSIONS Our data implicate CatC has a role in the selective tuning of innate and adaptive immune responses, relevant to a chronic immune disease, such as atherosclerosis.
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Affiliation(s)
- Veronica Herías
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Erik A L Biessen
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Cora Beckers
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Dianne Delsing
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Mengyang Liao
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Mat J Daemen
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Christine C T N Pham
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.)
| | - Sylvia Heeneman
- From the Experimental Vascular Pathology and Cardiovascular Research Institute Maastricht (CARIM), Department of Pathology, Maastricht University, The Netherlands (V.H., E.A.L.B., C.B., S.H.); Department of Immune Therapeutics, Merck Sharp & Dohme, Oss, The Netherlands (D.D.); Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (M.L.); Department of Pathology M2-206, Academic Medical Centre, Amsterdam, The Netherlands (M.J.D.); and Department of Medicine and Pathology and Immunology, Washington University, St Louis, MO (C.T.N.P.).
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Mast cells as rapid innate sensors of cytomegalovirus by TLR3/TRIF signaling-dependent and -independent mechanisms. Cell Mol Immunol 2014; 12:192-201. [PMID: 25152077 DOI: 10.1038/cmi.2014.73] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 07/09/2014] [Indexed: 02/01/2023] Open
Abstract
The succinct metaphor, 'the immune system's loaded gun', has been used to describe the role of mast cells (MCs) due to their storage of a wide range of potent pro-inflammatory and antimicrobial mediators in secretory granules that can be released almost instantly on demand to fight invaders. Located at host-environment boundaries and equipped with an arsenal of pattern recognition receptors, MCs are destined to be rapid innate sensors of pathogens penetrating endothelial and epithelial surfaces. Although the importance of MCs in antimicrobial and antiparasitic defense has long been appreciated, their role in raising the alarm against viral infections has been noted only recently. Work on cytomegalovirus (CMV) infection in the murine model has revealed MCs as players in a novel cross-talk axis between innate and adaptive immune surveillance of CMV, in that infection of MCs, which is associated with MC degranulation and release of the chemokine CCL5, enhances the recruitment of protective CD8 T cells to extravascular sites of virus replication, specifically to lung interstitium and alveolar epithelium. Here, we have expanded on these studies by investigating the conditions for MC activation and the consequent degranulation in response to host infection. Surprisingly, the data revealed two temporally and mechanistically distinct waves of MC activation: an almost instant indirect activation that depended on TLR3/TRIF signaling and delayed activation by direct infection of MCs that did not involve TLR3/TRIF signaling. Cell type-specific Cre-recombination that yielded eGFP-expressing reporter virus selectively originating from MCs identified MC as a new in vivo, first-hit target cell of productive murine CMV infection.
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Greenland JR, Xu X, Sayah DM, Liu FC, Jones KD, Looney MR, Caughey GH. Mast cells in a murine lung ischemia-reperfusion model of primary graft dysfunction. Respir Res 2014; 15:95. [PMID: 25115556 PMCID: PMC4151192 DOI: 10.1186/s12931-014-0095-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 08/04/2014] [Indexed: 01/21/2023] Open
Abstract
Primary graft dysfunction (PGD), as characterized by pulmonary infiltrates and high oxygen requirements shortly after reperfusion, is the major cause of early morbidity and mortality after lung transplantation. Donor, recipient and allograft-handling factors are thought to contribute, although new insights regarding pathogenesis are needed to guide approaches to prevention and therapy. Mast cells have been implicated in ischemic tissue injury in other model systems and in allograft rejection, leading to the hypothesis that mast cell degranulation contributes to lung injury following reperfusion injury. We tested this hypothesis in a mouse model of PGD involving reversible disruption of blood flow to one lung. Metrics of injury included albumin permeability, plasma extravasation, lung histopathology, and mast cell degranulation. Responses were assessed in wild-type (Kit+/+) and mast cell-deficient (KitW-sh/W-sh) mice. Because mouse lungs have few mast cells compared with human lungs, we also tested responses in mice with lung mastocytosis generated by injecting bone marrow-derived cultured mast cells (BMCMC). We found that ischemic lung responses of mast cell-deficient KitW-sh/W-sh mice did not differ from those of Kit+/+ mice, even after priming for injury using LPS. Degranulated mast cells were more abundant in ischemic than in non-ischemic BMCMC-injected KitW-sh/W-sh lungs. However, lung injury in BMCMC-injected KitW-sh/W-sh and Kit+/+ mice did not differ in globally mast cell-deficient, uninjected KitW-sh/W-sh mice or in wild-type Kit+/+ mice relatively deficient in lung mast cells. These findings predict that mast cells, although activated in lungs injured by ischemia and reperfusion, are not necessary for the development of PGD.
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Sutherland RE, Barry SS, Olsen JS, Salantes DB, Caughey GH, Wolters PJ. Dipeptidyl peptidase I controls survival from Klebsiella pneumoniae lung infection by processing surfactant protein D. Biochem Biophys Res Commun 2014; 450:818-823. [PMID: 24955853 DOI: 10.1016/j.bbrc.2014.06.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 06/13/2014] [Indexed: 01/01/2023]
Abstract
Prior work established that a deficiency in the cysteine protease dipeptidyl peptidase I (DPPI) improves survival following polymicrobial septic peritonitis. To test whether DPPI regulates survival from severe lung infections, DPPI(-/-) mice were studied in a Klebsiella pneumoniae lung infection model, finding that survival in DPPI(-/-) mice is significantly better than in DPPI(+/+) mice 8d after infection. DPPI(-/-) mice have significantly fewer bacteria in the lung than infected DPPI(+/+) mice, but no difference in lung histopathology, lung injury, or cytokine levels. To explore mechanisms of enhanced bacterial clearance in DPPI(-/-) mice, we examined the status of pulmonary collectins, finding that levels of surfactant protein D, but not of surfactant protein A, are higher in DPPI(-/-) than in DPPI(+/+) BAL fluid, and that DPPI(-/-) BAL fluid aggregate bacteria more effectively than control BAL fluid. Sequencing of the amino terminus of surfactant protein D revealed two or eight additional amino acids in surfactant protein D isolated from DPPI(-/-) mice, suggesting processing by DPPI. These results establish that DPPI is a major determinant of survival following Klebsiella pneumoniae lung infection and suggest that the survival disadvantage in DPPI(+/+) mice is in part due to processing of surfactant protein D by DPPI.
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Affiliation(s)
- Rachel E Sutherland
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
| | - Sophia S Barry
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
| | - Joanna S Olsen
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
| | - D Brenda Salantes
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
| | - George H Caughey
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
| | - Paul J Wolters
- Department of Medicine and The Cardiovascular Research Institute, University of California, San Francisco, CA 94143-0111
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van den Boogaard FE, Brands X, Roelofs JJTH, de Beer R, de Boer OJ, van 't Veer C, van der Poll T. Mast cells impair host defense during murine Streptococcus pneumoniae pneumonia. J Infect Dis 2014; 210:1376-84. [PMID: 24823624 DOI: 10.1093/infdis/jiu285] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Streptococcus pneumoniae is the most common causative pathogen in community-acquired pneumonia. Mast cells (MCs) are located mainly at the host-environment interface where they function as sentinels. OBJECTIVE Our goal was to study the role of MCs during pneumonia caused by S. pneumoniae. METHODS Lung tissue of patients who had died from pneumococcal pneumonia or a nonpulmonary cause was stained for MCs and tryptase. Wild-type (WT) and MC-deficient (Kit(W-sh/W-sh)) mice were observed or sacrificed after induction of pneumonia by intranasal inoculation of S. pneumoniae. In separate experiments, WT mice were treated with doxantrazole or cromoglycate, which are MC stabilizing agents. RESULTS The constitutive presence of tryptase-positive MCs was reduced in affected lungs from pneumonia patients. Kit(W-sh/W-sh) mice showed a prolonged survival during the first few days after median lethal dose (LD)100 and LD50 infection, while overall mortality did not differ from that in WT mice. Relative to WT mice, Kit(W-sh/W-sh) mice showed reduced bacterial counts with less bacterial dissemination to distant organs and less inflammation. Neither doxantrazole nor cromoglycate influenced antibacterial defense or inflammatory responses after airway infection with S. pneumoniae. CONCLUSIONS MCs exhibit an unfavorable role in host defense during pneumococcal pneumonia by a mechanism independent of degranulation.
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Affiliation(s)
| | - Xanthe Brands
- Center for Experimental and Molecular Medicine Center for Infection and Immunity Amsterdam
| | | | - Regina de Beer
- Center for Experimental and Molecular Medicine Center for Infection and Immunity Amsterdam
| | | | - Cornelis van 't Veer
- Center for Experimental and Molecular Medicine Center for Infection and Immunity Amsterdam
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine Center for Infection and Immunity Amsterdam Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, The Netherlands
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Intestinal epithelial apoptosis initiates gut mucosal injury during extracorporeal membrane oxygenation in the newborn piglet. J Transl Med 2014; 94:150-60. [PMID: 24365747 PMCID: PMC3946757 DOI: 10.1038/labinvest.2013.149] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/08/2013] [Accepted: 11/09/2013] [Indexed: 01/24/2023] Open
Abstract
Neonates and young infants exposed to extracorporeal circulation during extracorporeal membrane oxygenation (ECMO) and cardiopulmonary bypass are at risk of developing a systemic inflammatory response syndrome with multi-organ dysfunction. We used a piglet model of ECMO to investigate the hypothesis that epithelial apoptosis is an early event that precedes villous damage during ECMO-related bowel injury. Healthy 3-week-old piglets were subjected to ECMO for up to 8 h. Epithelial apoptosis was measured in histopathological analysis, nuclear imaging, and terminal deoxynucleotidyl transferase dUTP nick end labeling. Plasma intestinal fatty acid-binding protein (I-FABP) levels were measured by enzyme immunoassay. Intestinal mast cells were isolated by fluorescence-assisted cell sorting. Cleaved caspase-8, caspase-9, phospho-p38 MAPK, and fas ligand expression were investigated by immunohistochemistry, western blots, and reverse transcriptase-quantitative PCR. Piglet ECMO was associated with increased gut epithelial apoptosis. Extensive apoptotic changes were noted on villus tips and in scattered crypt cells after 2 h of ECMO. After 8 h, the villi were denuded and apoptotic changes were evident in a majority of crypt cells. Increased circulating I-FABP levels, a marker of gut epithelial injury, showed that epithelial injury occurred during ECMO. We detected increased cleaved caspase-8, but not cleaved caspase-9, in epithelial cells indicating that the extrinsic apoptotic pathway was active. ECMO was associated with increased fas ligand expression in intestinal mast cells, which was induced through activation of the p38 mitogen-activated protein kinase. We conclude that epithelial apoptosis is an early event that initiates gut mucosal injury in a piglet model of ECMO.
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Reber LL, Frossard N. Targeting mast cells in inflammatory diseases. Pharmacol Ther 2014; 142:416-35. [PMID: 24486828 DOI: 10.1016/j.pharmthera.2014.01.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 01/24/2014] [Indexed: 12/24/2022]
Abstract
Although mast cells have long been known to play a critical role in anaphylaxis and other allergic diseases, they also participate in some innate immune responses and may even have some protective functions. Data from the study of mast cell-deficient mice have facilitated our understanding of some of the molecular mechanisms driving mast cell functions during both innate and adaptive immune responses. This review presents an overview of the biology of mast cells and their potential involvement in various inflammatory diseases. We then discuss some of the current pharmacological approaches used to target mast cells and their products in several diseases associated with mast cell activation.
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Affiliation(s)
- Laurent L Reber
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
| | - Nelly Frossard
- Laboratoire d'Innovation Thérapeutique, UMR 7200 CNRS-Université de Strasbourg, Faculté de Pharmacie, France
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Ruffell B, Affara NI, Cottone L, Junankar S, Johansson M, DeNardo DG, Korets L, Reinheckel T, Sloane BF, Bogyo M, Coussens LM. Cathepsin C is a tissue-specific regulator of squamous carcinogenesis. Genes Dev 2013; 27:2086-98. [PMID: 24065739 PMCID: PMC3850093 DOI: 10.1101/gad.224899.113] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Serine and cysteine cathepsin (Cts) proteases are involved in tumor progression. CtsB plays a significant role during mammary carcinogenesis. Ruffell et al. find that squamous carcinomas develop independently of CtsB. CtsC is not required during mammary carcinogenesis but is necessary for squamous carcinogenesis. Dermal/stromal fibroblasts and bone marrow-derived cells express elevated levels of enzymatically active CtsC that regulate the complexity of infiltrating immune cells in neoplastic skin, development of angiogenic vasculature, and squamous cell carcinoma growth. These findings indicate that tissue specificity can define functional significance. Serine and cysteine cathepsin (Cts) proteases are an important class of intracellular and pericellular enzymes mediating multiple aspects of tumor development. Emblematic of these is CtsB, reported to play functionally significant roles during pancreatic islet and mammary carcinogenesis. CtsC, on the other hand, while up-regulated during pancreatic islet carcinogenesis, lacks functional significance in mediating neoplastic progression in that organ. Given that protein expression and enzymatic activity of both CtsB and CtsC are increased in numerous tumors, we sought to understand how tissue specificity might factor into their functional significance. Thus, whereas others have reported that CtsB regulates metastasis of mammary carcinomas, we found that development of squamous carcinomas occurs independently of CtsB. In contrast to these findings, our studies found no significant role for CtsC during mammary carcinogenesis but revealed squamous carcinogenesis to be functionally dependent on CtsC. In this context, dermal/stromal fibroblasts and bone marrow-derived cells expressed increased levels of enzymatically active CtsC that regulated the complexity of infiltrating immune cells in neoplastic skin, development of angiogenic vasculature, and overt squamous cell carcinoma growth. These studies highlight the important contribution of tissue/microenvironment context to solid tumor development and indicate that tissue specificity defines functional significance for these two members of the cysteine protease family.
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Affiliation(s)
- Brian Ruffell
- Department of Pathology, University of California at San Francisco, San Francisco, California 94143, USA
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Malaria-associated L-arginine deficiency induces mast cell-associated disruption to intestinal barrier defenses against nontyphoidal Salmonella bacteremia. Infect Immun 2013; 81:3515-26. [PMID: 23690397 DOI: 10.1128/iai.00380-13] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Coinfection with malaria and nontyphoidal Salmonella serotypes (NTS) can cause life-threatening bacteremia in humans. Coinfection with malaria is a recognized risk factor for invasive NTS, suggesting that malaria impairs intestinal barrier function. Here, we investigated mechanisms and strategies for prevention of coinfection pathology in a mouse model. Our findings reveal that malarial-parasite-infected mice, like humans, develop L-arginine deficiency, which is associated with intestinal mastocytosis, elevated levels of histamine, and enhanced intestinal permeability. Prevention or reversal of L-arginine deficiency blunts mastocytosis in ileal villi as well as bacterial translocation, measured as numbers of mesenteric lymph node CFU of noninvasive Escherichia coli Nissle and Salmonella enterica serotype Typhimurium, the latter of which is naturally invasive in mice. Dietary supplementation of malarial-parasite-infected mice with L-arginine or L-citrulline reduced levels of ileal transcripts encoding interleukin-4 (IL-4), a key mediator of intestinal mastocytosis and macromolecular permeability. Supplementation with L-citrulline also enhanced epithelial adherens and tight junctions in the ilea of coinfected mice. These data suggest that increasing L-arginine bioavailability via oral supplementation can ameliorate malaria-induced intestinal pathology, providing a basis for testing nutritional interventions to reduce malaria-associated mortality in humans.
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Sun B, Xiao J, Sun XB, Wu Y. Notoginsenoside R1 attenuates cardiac dysfunction in endotoxemic mice: an insight into oestrogen receptor activation and PI3K/Akt signalling. Br J Pharmacol 2013; 168:1758-70. [PMID: 23170834 PMCID: PMC3605881 DOI: 10.1111/bph.12063] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/10/2012] [Accepted: 11/13/2012] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Notoginsenoside R1 (NG-R1), a novel phytoestrogen isolated from Panax notoginseng, is believed to have anti-inflammatory, anti-oxidative and anti-apoptotic properties. However, its cardioprotective properties and underlying mechanisms are largely unknown. Here we have assessed the contribution of the anti-inflammatory effects of NG-R1 to the amelioration of septic cardiac dysfunction and inflammation in mice. EXPERIMENTAL APPROACH We assessed cardiac function in mice by echocardiography. We studied the protein or mRNA levels of some inflammatory factors, apoptotic factors and oestrogen receptors (ERs) in heart tissues upon stimulation with bacterial LPS, NG-R1 or some pharmacological inhibitors. KEY RESULTS Six hours after LPS administration (10 mg·kg(-1) , i.p.) cardiac function was decreased, an effect attenuated by NG-R1 pretreatment (25 mg·kg(-1) ·d(-1) , i.p.). NG-R1 also improved the imbalance between iNOS and eNOS, prevented activation of NF-κB and the subsequent myocardial inflammatory and apoptotic responses in endotoxemic mice. The effects of NG-R1 were closely associated with activation of the oestrogen receptor ERα and of PI3K/PKB (Akt) signalling, as characterized by NG-R1-induced preservation in ERα, phospho-Akt, phospho-GSK3β and I-κBα, and of cardiac function that was partially blocked by selective inhibitors of ERα or PI3K. However, NG-R1 had no effect on LPS-activated TLR-4. CONCLUSIONS AND IMPLICATIONS NG-R1 is a promising compound for protecting the heart from septic shock, possibly via the activation of ERα and PI3K/Akt signalling. This mechanism produces blockade of NF-κB activation and attenuation of the pro-inflammatory state and apoptotic stress in the myocardium.
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Affiliation(s)
- Bing Sun
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing, China
| | - Jing Xiao
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing, China
| | - Xiao-Bo Sun
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing, China
| | - Ying Wu
- Academy of Chinese Materia Medica, Wenzhou Medical CollegeWenzhou, China
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Piliponsky AM, Chen CC, Rios EJ, Treuting PM, Lahiri A, Abrink M, Pejler G, Tsai M, Galli SJ. The chymase mouse mast cell protease 4 degrades TNF, limits inflammation, and promotes survival in a model of sepsis. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:875-86. [PMID: 22901752 DOI: 10.1016/j.ajpath.2012.05.013] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 05/10/2012] [Accepted: 05/17/2012] [Indexed: 11/25/2022]
Abstract
Mouse mast cell protease 4 (mMCP-4), the mouse counterpart of human mast cell chymase, is thought to have proinflammatory effects in innate or adaptive immune responses associated with mast cell activation. However, human chymase can degrade the proinflammatory cytokine TNF, a mediator that can be produced by mast cells and many other cell types. We found that mMCP-4 can reduce levels of mouse mast cell-derived TNF in vitro through degradation of transmembrane and soluble TNF. We assessed the effects of interactions between mMCP-4 and TNF in vivo by analyzing the features of a classic model of polymicrobial sepsis, cecal ligation and puncture (CLP), in C57BL/6J-mMCP-4-deficient mice versus C57BL/6J wild-type mice, and in C57BL/6J-Kit(W-sh/W-sh) mice containing adoptively transferred mast cells that were either wild type or lacked mMCP-4, TNF, or both mediators. The mMCP-4-deficient mice exhibited increased levels of intraperitoneal TNF, higher numbers of peritoneal neutrophils, and increased acute kidney injury after CLP, and also had significantly higher mortality after this procedure. Our findings support the conclusion that mMCP-4 can enhance survival after CLP at least in part by limiting detrimental effects of TNF, and suggest that mast cell chymase may represent an important negative regulator of TNF in vivo.
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Affiliation(s)
- Adrian M Piliponsky
- Department of Pathology, Stanford University School of Medicine, California 94305-5324, USA.
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Liu W, Yan M, Liu Y, McLeish KR, Coleman WG, Rodgers GP. Olfactomedin 4 inhibits cathepsin C-mediated protease activities, thereby modulating neutrophil killing of Staphylococcus aureus and Escherichia coli in mice. THE JOURNAL OF IMMUNOLOGY 2012; 189:2460-7. [PMID: 22844115 DOI: 10.4049/jimmunol.1103179] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Neutrophils kill bacteria generally through oxidative and nonoxidative mechanisms. Whereas much research has focused on the enzymes essential for neutrophil killing, little is known about the regulatory molecules responsible for such killing. In this study, we investigated the role of olfactomedin 4 (OLFM4), an olfactomedin-related glycoprotein, in neutrophil bactericidal capability and host innate immunity. Neutrophils from OLFM4⁻/⁻ mice have increased intracellular killing of Staphylococcus aureus and Escherichia coli in vitro. The OLFM4⁻/⁻ mice have enhanced in vivo bacterial clearance and are more resistant to sepsis when challenged with S. aureus or E. coli by i.p. injection. OLFM4 was found to interact with cathepsin C, a cysteine protease that plays an important role in bacterial killing and immune regulation. We demonstrated that OLFM4 inhibited cathepsin C activity in vitro and in vivo. The cathepsin C activity in neutrophils from OLFM4⁻/⁻ mice was significantly higher than that in neutrophils from wild-type littermate mice. The activities of three serine proteases (neutrophil elastase, cathepsin G, and proteinase 3), which require cathepsin C activity for processing and maturity, were also significantly higher in OLFM4⁻/⁻ neutrophils. The bacterial killing and clearance capabilities observed in OLFM4⁻/⁻ mice that were enhanced relative to wild-type mice were significantly compromised by the additional loss of cathepsin C in mice with OLFM4 and cathepsin C double deficiency. These results indicate that OLFM4 is an important negative regulator of neutrophil bactericidal activity by restricting cathepsin C activity and its downstream granule-associated serine proteases.
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Affiliation(s)
- Wenli Liu
- Molecular and Clinical Hematology Branch, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
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Fan K, Wu X, Fan B, Li N, Lin Y, Yao Y, Ma J. Up-regulation of microglial cathepsin C expression and activity in lipopolysaccharide-induced neuroinflammation. J Neuroinflammation 2012; 9:96. [PMID: 22607609 PMCID: PMC3410810 DOI: 10.1186/1742-2094-9-96] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2011] [Accepted: 05/20/2012] [Indexed: 12/17/2022] Open
Abstract
Background Cathepsin C (Cat C) functions as a central coordinator for activation of many serine proteases in inflammatory cells. It has been recognized that Cat C is responsible for neutrophil recruitment and production of chemokines and cytokines in many inflammatory diseases. However, Cat C expression and its functional role in the brain under normal conditions or in neuroinflammatory processes remain unclear. Our previous study showed that Cat C promoted the progress of brain demyelination in cuprizone-treated mice. The present study further investigated the Cat C expression and activity in lipopolysaccharide (LPS)-induced neuroinflammation in vivo and in vitro. Methods C57BL/6 J mice were intraperitoneally injected with either 0.9% saline or lipopolysaccharide (LPS, 5 mg/kg). Immunohistochemistry (IHC) and in situ hybridization (ISH) were used to analyze microglial activation, TNF-α, IL-1β, IL-6, iNOS mRNAs expressions and cellular localization of Cat C in the brain. Nitrite assay was used to examine microglial activation in vitro; RT-PCR and ELISA were used to determine the expression and release of Cat C. Cat C activity was analyzed by cellular Cat C assay kit. Data were evaluated for statistical significance with paired t test. Results Cat C was predominantly expressed in hippocampal CA2 neurons in C57BL/6 J mice under normal conditions. Six hours after LPS injection, Cat C expression was detected in cerebral cortical neurons; whereas, twenty-four hours later, Cat C expression was captured in activated microglial cells throughout the entire brain. The duration of induced Cat C expression in neurons and in microglial cells was ten days and three days, respectively. In vitro, LPS, IL-1β and IL-6 treatments increased microglial Cat C expression in a dose-dependent manner and upregulated Cat C secretion and its activity. Conclusions Taken together, these data indicate that LPS and proinflammatory cytokines IL-1β, IL-6 induce the expression, release and upregulate enzymatic activity of Cat C in microglial cells. Further investigation is required to determine the functional role of Cat C in the progression of neuroinflammation, which may have implications for therapeutics for the prevention of neuroinflammation-involved neurological disorders in the future.
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Affiliation(s)
- Kai Fan
- Department of Anatomy, Dalian Medical University, No, 9, West Segment of South Lvshun Road, Dalian, Liaoning, 116044, China
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