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Yang W, Bai X, Jia X, Li H, Min J, Li H, Zhang H, Zhou J, Zhao Y, Liu W, Xin H, Sun L. The binding of extracellular cyclophilin A to ACE2 and CD147 triggers psoriasis-like inflammation. J Autoimmun 2024; 148:103293. [PMID: 39096717 DOI: 10.1016/j.jaut.2024.103293] [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: 02/19/2024] [Accepted: 07/22/2024] [Indexed: 08/05/2024]
Abstract
Psoriasis is a chronic, proliferative, and inflammatory skin disease closely associated with inflammatory cytokine production. Cyclophilin A (CypA) is an important proinflammatory factor; however, its role in psoriasis remains unclear. The present data indicate that CypA levels are increased in the lesion skin and serum of patients with psoriasis, which is positively correlated with the psoriasis area severity index. Furthermore, extracellular CypA (eCypA) triggered psoriasis-like inflammatory responses in keratinocytes. Moreover, anti-CypA mAb significantly reduced pathological injury, keratinocyte proliferation, cytokine expression in imiquimod-induced mice. Notably, the therapeutic effect of anti-CypA mAb was better than that of the clinically used anti-IL-17A mAb and methotrexate. Mechanistically, eCypA binds to ACE2 and CD147 and is blocked by anti-CypA mAb. eCypA not only induces the dimerization and phosphorylation of ACE2 to trigger the JAK1/STAT3 signaling pathway for cytokine expression but also interacts with CD147 to promote PI3K/AKT/mTOR signaling-mediated keratinocyte proliferation. These findings demonstrate that the binding of eCypA to ACE2 and CD147 cooperatively triggers psoriasis-like inflammation and anti-CypA mAb is a promising candidate for the treatment of psoriasis.
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Affiliation(s)
- Wenxian Yang
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Xiaoyuan Bai
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiaoxiao Jia
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Huizi Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jie Min
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Heqiao Li
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518107, China
| | - Haoran Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jianjing Zhou
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuna Zhao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wenjun Liu
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haiming Xin
- Center of Burns, Plastic Cosmetic and Dermatology, The 924th Hospital of the Joint Logistics Support Force of Chinese PLA, Guilin, Guangxi, 541002, China.
| | - Lei Sun
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Bai X, Yang W, Zhao Y, Cao T, Lin R, Jiao P, Li H, Li H, Min J, Jia X, Zhang H, Fan W, Jia X, Bi Y, Liu W, Sun L. The extracellular cyclophilin A-integrin β2 complex as a therapeutic target of viral pneumonia. Mol Ther 2024; 32:1510-1525. [PMID: 38454605 PMCID: PMC11081868 DOI: 10.1016/j.ymthe.2024.03.008] [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: 09/28/2023] [Revised: 01/12/2024] [Accepted: 03/05/2024] [Indexed: 03/09/2024] Open
Abstract
The acute respiratory virus infection can induce uncontrolled inflammatory responses, such as cytokine storm and viral pneumonia, which are the major causes of death in clinical cases. Cyclophilin A (CypA) is mainly distributed in the cytoplasm of resting cells and released into the extracellular space in response to inflammatory stimuli. Extracellular CypA (eCypA) is upregulated and promotes inflammatory response in severe COVID-19 patients. However, how eCypA promotes virus-induced inflammatory response remains elusive. Here, we observe that eCypA is induced by influenza A and B viruses and SARS-CoV-2 in cells, mice, or patients. Anti-CypA mAb reduces pro-inflammatory cytokines production, leukocytes infiltration, and lung injury in virus-infected mice. Mechanistically, eCypA binding to integrin β2 triggers integrin activation, thereby facilitating leukocyte trafficking and cytokines production via the focal adhesion kinase (FAK)/GTPase and FAK/ERK/P65 pathways, respectively. These functions are suppressed by the anti-CypA mAb that specifically blocks eCypA-integrin β2 interaction. Overall, our findings reveal that eCypA-integrin β2 signaling mediates virus-induced inflammatory response, indicating that eCypA is a potential target for antibody therapy against viral pneumonia.
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Affiliation(s)
- Xiaoyuan Bai
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wenxian Yang
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yuna Zhao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources & Laboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, Guangxi, China
| | - Tongtong Cao
- Department of Traditional Chinese Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Runshan Lin
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengtao Jiao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Heqiao Li
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Huizi Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Min
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxiao Jia
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - He Zhang
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China
| | - Wenhui Fan
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaojuan Jia
- The Biological Safety level-3 (BSL-3) Laboratory of Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yuhai Bi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China; The Biological Safety level-3 (BSL-3) Laboratory of Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wenjun Liu
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518107, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources & Laboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, Guangxi, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Sun
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China.
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Habeichi NJ, Amin G, Lakkis B, Kataya R, Mericskay M, Booz GW, Zouein FA. Potential Alternative Receptors for SARS-CoV-2-Induced Kidney Damage: TLR-4, KIM-1/TIM-1, and CD147. FRONT BIOSCI-LANDMRK 2024; 29:8. [PMID: 38287815 PMCID: PMC10924798 DOI: 10.31083/j.fbl2901008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 01/31/2024]
Abstract
Kidney damage in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can occur even in patients with no underlying kidney disease. Signs of kidney problems can progress to a state that demands dialysis and hampering recovery. Although not without controversy, emerging evidence implicates direct infectivity of SARS-CoV-2 in the kidney. At the early stage of the pandemic, consideration was mainly on the well-recognized angiotensin-converting enzyme 2 (ACE2) receptor as being the site for viral interaction and subsequent cellular internalization. Despite the abundance of ACE2 receptors in the kidneys, researchers have expanded beyond ACE2 and identified novel viral entry pathways that could be advantageously explored as therapeutic targets. This review presents the potential involvement of toll-like receptor 4 (TLR-4), kidney injury molecule-1/T cell immunoglobulin mucin domain 1 (KIM-1/TIM-1), and cluster of differentiation 147 (CD147) in SARS-CoV-2-associated renal damage. In this context, we address the unresolved issues surrounding SARS-CoV-2 renal infectivity.
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Affiliation(s)
- Nada J. Habeichi
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
- MatriceLab Innove Laboratory, Immeuble Les Gemeaux, 94000 Creteil, France
| | - Ghadir Amin
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Bachir Lakkis
- Division of Cardiology, Department of Internal Medicine, American University of Beirut Medical Center, 1107-2020 Beirut, Lebanon
| | - Rayane Kataya
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
| | - Mathias Mericskay
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
| | - George W. Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Fouad A. Zouein
- Department of Pharmacology and Toxicology, American University of Beirut Faculty of Medicine, 1107-2020 Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, 1107-2020 Beirut, Lebanon
- Department of Signaling and Cardiovascular Pathophysiology, University Paris Saclay, INSERM UMR_1180, 91400 Orsay, France
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS 39216, USA
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Mahesutihan M, Yan J, Midilibieke H, Yu L, Dawulin R, Yang WX, Wulasihan M. Role of cyclophilin A in aggravation of myocardial ischemia reperfusion injury via regulation of apoptosis mediated by thioredoxin-interacting protein. Clin Hemorheol Microcirc 2024; 87:491-513. [PMID: 38669522 DOI: 10.3233/ch-242142] [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] [Indexed: 04/28/2024]
Abstract
BACKGROUND The progression and persistence of myocardial ischemia/reperfusion injury (MI/RI) are strongly linked to local inflammatory responses and oxidative stress. Cyclophilin A (CypA), a pro-inflammatory factor, is involved in various cardiovascular diseases. However, the role and mechanism of action of CypA in MI/RI are still not fully understood. METHODS We used the Gene Expression Omnibus (GEO) database for bioinformatic analysis. We collected blood samples from patients and controls for detecting the levels of serum CypA using enzyme-linked immunosorbent assay (ELISA) kits. We then developed a myocardial ischemia/reperfusion (I/R) injury model in wild-type (WT) mice and Ppia-/- mice. We utilized echocardiography, hemodynamic measurements, hematoxylin and eosin (H&E) staining, immunohistochemistry, enzyme-linked immunosorbent assay, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining to determine the role of CypA in myocardial I/R injury. Finally, we conducted an in vitrostudy, cell transfection, flow cytometry, RNA interference, and a co-immunoprecipitation assay to clarify the mechanism of CypA in aggravating cardiomyocyte apoptosis. RESULTS We found that CypA inhibited TXNIP degradation to enhance oxidative stress-induced cardiomyocyte apoptosis during MI/RI. By comparing and analyzing CypA expression in patients with coronary atherosclerotic heart disease and in healthy controls, we found that CypA was upregulated in patients with Coronary Atmospheric Heart Disease, and its expression was positively correlated with Gensini scores. In addition, CypA deficiency decreased cytokine expression, oxidative stress, and cardiomyocyte apoptosis in I/R-treated mice, eventually alleviating cardiac dysfunction. CypA knockdown also reduced H2O2-induced apoptosis in H9c2 cells. Mechanistically, we found that CypA inhibited K48-linked ubiquitination mediated by atrophin-interacting protein 4 (AIP4) and proteasomal degradation of TXNIP, a thioredoxin-binding protein that mediates oxidative stress and induces apoptosis. CONCLUSION These findings highlight the critical role CypA plays in myocardial injury caused by oxidative stress-induced apoptosis, indicating that CypA can be a viable biomarker and a therapeutic target candidate for MI/RI.
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Affiliation(s)
- Madina Mahesutihan
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ju Yan
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hasidaer Midilibieke
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Li Yu
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Reyizha Dawulin
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Wen-Xian Yang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Muhuyati Wulasihan
- Department of Integrated Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Medical University, Urumqi, China
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5
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Robles J, Prakash A, Vizcaíno JA, Casal JI. Integrated meta-analysis of colorectal cancer public proteomic datasets for biomarker discovery and validation. PLoS Comput Biol 2024; 20:e1011828. [PMID: 38252632 PMCID: PMC10833860 DOI: 10.1371/journal.pcbi.1011828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/01/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
The cancer biomarker field has been an object of thorough investigation in the last decades. Despite this, colorectal cancer (CRC) heterogeneity makes it challenging to identify and validate effective prognostic biomarkers for patient classification according to outcome and treatment response. Although a massive amount of proteomics data has been deposited in public data repositories, this rich source of information is vastly underused. Here, we attempted to reuse public proteomics datasets with two main objectives: i) to generate hypotheses (detection of biomarkers) for their posterior/downstream validation, and (ii) to validate, using an orthogonal approach, a previously described biomarker panel. Twelve CRC public proteomics datasets (mostly from the PRIDE database) were re-analysed and integrated to create a landscape of protein expression. Samples from both solid and liquid biopsies were included in the reanalysis. Integrating this data with survival annotation data, we have validated in silico a six-gene signature for CRC classification at the protein level, and identified five new blood-detectable biomarkers (CD14, PPIA, MRC2, PRDX1, and TXNDC5) associated with CRC prognosis. The prognostic value of these blood-derived proteins was confirmed using additional public datasets, supporting their potential clinical value. As a conclusion, this proof-of-the-concept study demonstrates the value of re-using public proteomics datasets as the basis to create a useful resource for biomarker discovery and validation. The protein expression data has been made available in the public resource Expression Atlas.
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Affiliation(s)
- Javier Robles
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Protein Alternatives SL, Tres Cantos, Madrid, Spain
| | - Ananth Prakash
- European Molecular Biology Laboratory—European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Juan Antonio Vizcaíno
- European Molecular Biology Laboratory—European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| | - J. Ignacio Casal
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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Kalinina A, Tilova L, Kirsanov K, Lesovaya E, Zhidkova E, Fetisov T, Ilyinskaya G, Yakubovskaya M, Kazansky D, Khromykh L. Secreted cyclophilin A is non-genotoxic but acts as a tumor promoter. Toxicology 2023; 500:153675. [PMID: 37993081 DOI: 10.1016/j.tox.2023.153675] [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: 08/14/2023] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023]
Abstract
Chronic inflammation is associated with malignant transformation and creates the microenvironment for tumor progression. Cyclophilin A (CypA) is one of the major pro-inflammatory mediators that accumulates and persists in the site of inflammation in high doses over time. According to multiomics analyses of transformed cells, CypA is widely recognized as a pro-oncogenic factor. Vast experimental data define the functions of intracellular CypA in carcinogenesis, but findings on the role of its secreted form in tumor formation and progression are scarce. In the studies here, we exploit short-term in vitro and in vivo tests to directly evaluate the mutagenic, recombinogenic, and blastomogenic effects, as well as the promoter activity of recombinant human CypA (rhCypA), an analogue of secreted CypA. Our findings showed that rhCypA had no genotoxicity and, thus, was neither involved in nor influenced the initiation stage of carcinogenesis. At high doses, rhCypA could disrupt gap junctions in rat liver epithelial IAR-2 cells in vitro by decreasing the expression of connexins 26 and 43 in these cells and inhibit A549 cell adhesion. These data suggested that rhCypA could contribute to epithelial-mesenchymal transition in malignant cells. The research presented here elucidated the role of secreted CypA in carcinogenesis, revealing that it is not a tumor initiator but can act as a tumor promoter at high concentrations.
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Affiliation(s)
- Anastasiia Kalinina
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Leila Tilova
- Kabardino-Balkarian State University named after H.M. Berbekov, 173, Chernyshevsky st., 360004 Nalchik, Russia
| | - Kirill Kirsanov
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia; Institute of Medicine, RUDN University, 6, Miklukho-Maklaya st., 117198 Moscow, Russia
| | - Ekaterina Lesovaya
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia; Department of Oncology, I.P. Pavlov Ryazan State Medical University, 9, Vysokovoltnaya st., 390026 Ryazan, Russia
| | - Ekaterina Zhidkova
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Timur Fetisov
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Galina Ilyinskaya
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Marianna Yakubovskaya
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Dmitry Kazansky
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia
| | - Ludmila Khromykh
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Health of the Russian Federation, 24, Kashirskoe sh., 115478 Moscow, Russia.
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7
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Ahmed F, Yao XQ, Hamelberg D. Conserved Conformational Dynamics Reveal a Key Dynamic Residue in the Gatekeeper Loop of Human Cyclophilins. J Phys Chem B 2023; 127:3139-3150. [PMID: 36989346 PMCID: PMC10108351 DOI: 10.1021/acs.jpcb.2c08650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Cyclophilins are ubiquitous human enzymes that catalyze peptidyl-prolyl cis-trans isomerization in protein substrates. Of the 17 unique isoforms, five closely related isoforms (CypA-E) are found in various environments and participate in diverse cellular processes, yet all have similar structures and the same core catalytic function. The question is what key residues are behind the conserved function of these enzymes. Here, conformational dynamics are compared across these isoforms to detect conserved dynamics essential for the catalytic activity of cyclophilins. A set of key dynamic residues, defined by the most dynamically conserved positions, are identified in the gatekeeper 2 region. The highly conserved glycine (Gly80) in this region is predicted to underlie the local flexibility, which is further tested by molecular dynamics simulations performed on mutants (G80A) of CypE and CypA. The mutation leads to decreased flexibility of CypE and CypA during substrate binding but increased flexibility during catalysis. Dynamical changes occur in the mutated region and a distal loop downstream of the mutation site in sequence. Examinations of the mutational effect on catalysis show that both mutated CypE and CypA exhibit shifted binding free energies of the substrate under distinct isomer conformations. The results suggest a loss of function in the mutated CypE and CypA. These catalytic changes by the mutation are likely independent of the substrate sequence, at least in CypA. Our work presents a method to identify function-related key residues in proteins.
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Affiliation(s)
- Furyal Ahmed
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30302-3965, United States
- Agnes Scott College, Decatur, Georgia 30030, United States
| | - Xin-Qiu Yao
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30302-3965, United States
| | - Donald Hamelberg
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30302-3965, United States
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Ure DR, Trepanier DJ, Mayo PR, Foster RT. Cyclophilin inhibition as a potential treatment for nonalcoholic steatohepatitis (NASH). Expert Opin Investig Drugs 2019; 29:163-178. [DOI: 10.1080/13543784.2020.1703948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Daren R. Ure
- Hepion Pharmaceuticals Inc, Edmonton, AB, Canada
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9
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Cao M, Yuan W, Peng M, Mao Z, Zhao Q, Sun X, Yan J. Role of CyPA in cardiac hypertrophy and remodeling. Biosci Rep 2019; 39:BSR20193190. [PMID: 31825469 PMCID: PMC6928530 DOI: 10.1042/bsr20193190] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 12/13/2022] Open
Abstract
Pathological cardiac hypertrophy is a complex process and eventually develops into heart failure, in which the heart responds to various intrinsic or external stress, involving increased interstitial fibrosis, cell death and cardiac dysfunction. Studies have shown that oxidative stress is an important mechanism for this maladaptation. Cyclophilin A (CyPA) is a member of the cyclophilin (CyPs) family. Many cells secrete CyPA to the outside of the cells in response to oxidative stress. CyPA from blood vessels and the heart itself participate in a variety of signaling pathways to regulate the production of reactive oxygen species (ROS) and mediate inflammation, promote cardiomyocyte hypertrophy and proliferation of cardiac fibroblasts, stimulate endothelial injury and vascular smooth muscle hyperplasia, and promote the dissolution of extracellular matrix (ECM) by activating matrix metalloproteinases (MMPs). The events triggered by CyPA cause a decline of diastolic and systolic function and finally lead to the occurrence of heart failure. This article aims to introduce the role and mechanism of CyPA in cardiac hypertrophy and remodeling, and highlights its potential role as a disease biomarker and therapeutic target.
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Affiliation(s)
- Mengfei Cao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Wei Yuan
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Meiling Peng
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Ziqi Mao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Qianru Zhao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Xia Sun
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Jinchuan Yan
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
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10
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Xin S, Du S, Liu L, Xie Y, Zuo L, Yang J, Hu J, Yue W, Zhang J, Cao P, Zhu F, Lu J. Epstein-Barr Virus Nuclear Antigen 1 Recruits Cyclophilin A to Facilitate the Replication of Viral DNA Genome. Front Microbiol 2019; 10:2879. [PMID: 31921057 PMCID: PMC6923202 DOI: 10.3389/fmicb.2019.02879] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/28/2019] [Indexed: 12/18/2022] Open
Abstract
Epstein-Barr virus (EBV) nuclear antigen 1 (EBNA1)-mediated DNA episomal genome replication and persistence are essential for the viral pathogenesis. Cyclophilin A (CYPA) is upregulated in EBV-associated nasopharyngeal carcinoma (NPC) with unknown roles. In the present approach, cytosolic CYPA was found to be bound with EBNA1 into the nucleus. The amino acid 376-459 of the EBNA1 domain was important for the binding. CYPA depletion attenuated and ectopic CYPA expression improved EBNA1 expression in EBV-positive cells. The loss of viral copy number was also accelerated by CYPA consumption in daughter cells during culture passages. Mechanistically, CYPA mediated the connection of EBNA1 with oriP (origin of EBV DNA replication) and subsequent oriP transcription, which is a key step for the initiation of EBV genome replication. Moreover, CYPA overexpression markedly antagonized the connection of EBNA1 to Ubiquitin-specific protease 7 (USP7), which is a strong host barrier with a role of inhibiting EBV genome replication. The PPIase activity of CYPA was required for the promotion of oriP transcription and antagonism with USP7. The results revealed a strategy that EBV recruited a host factor to counteract the host defense, thus facilitating its own latent genome replication. This study provides a new insight into EBV pathogenesis and potential virus-targeted therapeutics in EBV-associated NPC, in which CYPA is upregulated at all stages.
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Affiliation(s)
- Shuyu Xin
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Shujuan Du
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Lingzhi Liu
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Yan Xie
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Lielian Zuo
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Jing Yang
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Jingjin Hu
- Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Wenxing Yue
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Jing Zhang
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Pengfei Cao
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Fanxiu Zhu
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Biological Sciences, Florida State University, Tallahassee, FL, United States
| | - Jianhong Lu
- NHC Key Laboratory of Carcinogenesis, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Department of Hematology, Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Microbiology, School of Basic Medical Science, Central South University, Changsha, China
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11
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Wu FL, Liu Y, Zhang HN, Jiang HW, Cheng L, Guo SJ, Deng JY, Bi LJ, Zhang XE, Gao HF, Tao SC. Global Profiling of PknG Interactions Using a Human Proteome Microarray Reveals Novel Connections with CypA. Proteomics 2018; 18:e1800265. [PMID: 30281201 DOI: 10.1002/pmic.201800265] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/12/2018] [Indexed: 11/10/2022]
Abstract
Mycobacterium tuberculosis (Mtb) serine/threonine kinase PknG plays an important role in the Mtb-host interaction by facilitating the survival of Mtb in macrophages. However, the human proteins with which the PknG interacts, and the underlying molecular mechanisms are still largely unknown. In this study, a HuProt array is been applied to globally identify the host proteins to which PknG binds. In this way, 125 interactors are discovered, including a cyclophilin protein, CypA. This interaction between PknG and CypA is validated both in vitro and in vivo, and functional studies show that PknG significantly reduces the protein levels of CypA through phosphorylation, which consequently inhibit the inflammatory response through downregulation of NF-κB and ERK1/2 pathways. Phenotypically, overexpression of PknG reduces cytokine levels and promotes the survival of Mycobacterium smegmatis (Msm) in macrophages. Overall, it is expected that the PknG interactors identified in this study will serve as a useful resource for further systematic studies of the roles that PknG plays in the Mtb-host interactions.
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Affiliation(s)
- Fan-Lin Wu
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Agriculture, Ludong University, Yantai, 264025, P. R. China
| | - Yin Liu
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Hai-Nan Zhang
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - He-Wei Jiang
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Li Cheng
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Shu-Juan Guo
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Jiao-Yu Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China
| | - Li-Jun Bi
- National Key Laboratory of Biomacromolecules, Key Laboratory of Non-Coding RNA and Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, 100101, Beijing, P. R. China.,School of Stomatology and Medicine, Foshan University, Foshan, 528000, Guangdong Province, P. R. China.,TB Healthcare Biotechnology Co., Ltd., Foshan, 528000, Guangdong Province, P. R. China.,Guangdong Province Key Laboratory of TB Systems Biology and Translational Medicine, Foshan, 528000, Guangdong Province, P. R. China
| | - Xian-En Zhang
- National Key Laboratory of Biomacromolecules, Key Laboratory of Non-Coding RNA and Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, 100101, Beijing, P. R. China
| | - Hua-Fang Gao
- National Research Institute for Health and Family Planning, 100081, Beijing, P. R. China
| | - Sheng-Ce Tao
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China.,School of Biomedical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
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12
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Xue C, Sowden MP, Berk BC. Extracellular and Intracellular Cyclophilin A, Native and Post-Translationally Modified, Show Diverse and Specific Pathological Roles in Diseases. Arterioscler Thromb Vasc Biol 2018; 38:986-993. [PMID: 29599134 DOI: 10.1161/atvbaha.117.310661] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 03/20/2018] [Indexed: 01/13/2023]
Abstract
CypA (cyclophilin A) is a ubiquitous and highly conserved protein with peptidyl prolyl isomerase activity. Because of its highly abundant level in the cytoplasm, most studies have focused on the roles of CypA as an intracellular protein. However, emerging evidence suggests an important role for extracellular CypA in the pathogenesis of several diseases through receptor (CD147 or other)-mediated autocrine and paracrine signaling pathways. In this review, we will discuss the shared and unique pathological roles of extracellular and intracellular CypA in human cardiovascular diseases. In addition, the evolving role of post-translational modifications of CypA in the pathogenesis of disease is discussed. Finally, recent studies with drugs specific for extracellular CypA show its importance in disease pathogenesis in several animal models and make extracellular CypA a new therapeutic target.
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Affiliation(s)
- Chao Xue
- From the Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, NY
| | - Mark P Sowden
- From the Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, NY
| | - Bradford C Berk
- From the Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, NY.
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13
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Kendrick AA, Schafer J, Dzieciatkowska M, Nemkov T, D'Alessandro A, Neelakantan D, Ford HL, Pearson CG, Weekes CD, Hansen KC, Eisenmesser EZ. CD147: a small molecule transporter ancillary protein at the crossroad of multiple hallmarks of cancer and metabolic reprogramming. Oncotarget 2018; 8:6742-6762. [PMID: 28039486 PMCID: PMC5341751 DOI: 10.18632/oncotarget.14272] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/30/2016] [Indexed: 02/07/2023] Open
Abstract
Increased expression of CD147 in pancreatic cancer has been proposed to play a critical role in cancer progression via CD147 chaperone function for lactate monocarboxylate transporters (MCTs). Here, we show for the first time that CD147 interacts with membrane transporters beyond MCTs and exhibits a protective role for several of its interacting partners. CD147 prevents its interacting partner's proteasome-dependent degradation and incorrect plasma membrane localization through the CD147 transmembrane (TM) region. The interactions with transmembrane small molecule and ion transporters identified here indicate a central role of CD147 in pancreatic cancer metabolic reprogramming, particularly with respect to amino acid anabolism and calcium signaling. Importantly, CD147 genetic ablation prevents pancreatic cancer cell proliferation and tumor growth in vitro and in vivo in conjunction with metabolic rewiring towards amino acid anabolism, thus paving the way for future combined pharmacological treatments.
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Affiliation(s)
- Agnieszka A Kendrick
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Johnathon Schafer
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Deepika Neelakantan
- Department of Pharmacology, School of Medicine, University of Colorado Denver, CO, USA
| | - Heide L Ford
- Department of Pharmacology, School of Medicine, University of Colorado Denver, CO, USA
| | - Chad G Pearson
- Department of Cell and Developmental Biology, School of Medicine, University of Colorado Denver, CO, USA
| | - Colin D Weekes
- Division of Oncology, Department of Medicine, University of Colorado Denver, CO, USA
| | - Kirk C Hansen
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Elan Z Eisenmesser
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
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14
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Serum Cyclophilin A Correlates with Increased Tissue MMP-9 in Patients with Ulcerative Colitis, but Not with Crohn's Disease. Dig Dis Sci 2017; 62:1511-1517. [PMID: 28391416 DOI: 10.1007/s10620-017-4568-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 04/01/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cyclophilin A (CyPA) is an immunomodulatory protein, high expression of which correlates with poor outcome of patients with inflammatory diseases. However, its role in inflammatory bowel disease (IBD) has not been studied. AIM This study analyzes the correlation between cyclophilin A, matrix metalloproteinase (MMP)-9, and tissue inhibitor of MMP (TIMP)/MMP-9 complexes in the inflamed and non-inflamed colon mucosa of UC and CD patients. METHODS Serum and biopsy specimens from inflamed and non-inflamed colonic mucosa of 38 patients with IBD (19 with UC and 19 with CD) and 16 controls were included in our study. We measured serum and tissue level of CyPA, and tissue level of TNF-α, MMP-9, TIMP-1/MMP-9, and TIMP-2/MMP-9 using ELISA method. RESULTS Our results indicated that serum, but not tissue CyPA is increased in UC, rather than in CD patients, compared to the control. The increase correlated with higher tissue concentration of MMP-9 and TNF-α, especially in the UC group. Moreover, we observed significantly higher level of TIMP-1/MMP-9 in UC and CD group, which overlapped with the change in MMP-9. There was no change in TIMP-2/MMP-9 in the analyzed groups. CONCLUSION The current study suggests that serum CyPA may be an independent additional marker of IBD, especially of UC. Higher CyPA level may be followed by increased MMP-9 in those patients. However, further studies are necessary to verify the role of CyPA in IBD development.
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15
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Targeting Extracellular Cyclophilin A Reduces Neuroinflammation and Extends Survival in a Mouse Model of Amyotrophic Lateral Sclerosis. J Neurosci 2016; 37:1413-1427. [PMID: 28011744 DOI: 10.1523/jneurosci.2462-16.2016] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/24/2016] [Accepted: 11/15/2016] [Indexed: 12/13/2022] Open
Abstract
Neuroinflammation is a major hallmark of amyotrophic lateral sclerosis (ALS), which is currently untreatable. Several anti-inflammatory compounds have been evaluated in patients and in animal models of ALS, but have been proven disappointing in part because effective targets have not yet been identified. Cyclophilin A, also known as peptidylprolyl cis-/trans-isomerase A (PPIA), as a foldase is beneficial intracellularly, but extracellularly has detrimental functions. We found that extracellular PPIA is a mediator of neuroinflammation in ALS. It is a major inducer of matrix metalloproteinase 9 and is selectively toxic for motor neurons. High levels of PPIA were found in the CSF of SOD1G93A mice and rats and sporadic ALS patients, suggesting that our findings may be relevant for familial and sporadic cases. A specific inhibitor of extracellular PPIA, MM218, given at symptom onset, rescued motor neurons and extended survival in the SOD1G93A mouse model of familial ALS by 11 d. The treatment resulted in the polarization of glia toward a prohealing phenotype associated with reduced NF-κB activation, proinflammatory markers, endoplasmic reticulum stress, and insoluble phosphorylated TDP-43. Our results indicates that extracellular PPIA is a promising druggable target for ALS and support further studies to develop a therapy to arrest or slow the progression of the disease in patients.SIGNIFICANCE STATEMENT We provide evidence that extracellular cyclophilin A, also known as peptidylprolyl cis-/trans-isomerase A (PPIA), is a mediator of the neuroinflammatory reaction in amyotrophic lateral sclerosis (ALS) and is toxic for motor neurons. Supporting this, a specific extracellular PPIA inhibitor reduced neuroinflammation, rescued motor neurons, and extended survival in the SOD1G93A mouse model of familial ALS. Our findings suggest selective pharmacological inhibition of extracellular PPIA as a novel therapeutic strategy, not only for SOD1-linked ALS, but possibly also for sporadic ALS. This approach aims to address the neuroinflammatory reaction that is a major hallmark of ALS. However, given the complexity of the disease, a combination of therapeutic approaches may be necessary.
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16
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Schumann M, Ihling CH, Prell E, Schierhorn A, Sinz A, Fischer G, Schiene-Fischer C, Malešević M. Identification of low abundance cyclophilins in human plasma. Proteomics 2016; 16:2815-2826. [PMID: 27586231 DOI: 10.1002/pmic.201600221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 08/19/2016] [Accepted: 08/22/2016] [Indexed: 11/08/2022]
Abstract
Cylophilins (Cyps) belong to the ubiquitously distributed enzyme class of peptidyl prolyl cis/trans isomerases (EC5.2.1.8), which are foldases capable of accelerating slow steps in the refolding of denatured proteins. At least 20 different Cyp isoenzymes are broadly distributed among all organs and cellular compartments in humans. Extracellularly localized Cyps came into the scientific focus recently because of their involvement in the control of inflammatory diseases, as well as viral and bacterial infections. However, detailed insights into Cyp functions are often hampered by the lack of sensitive detection methods. We present an improved method for affinity purification and detection of Cyp in biotic samples in this manuscript. The procedure takes advantage of two novel cyclosporine A derivatives. Derivative 1 was used to capture Cyps from the sample while derivative 2 was applied for selective release from the affinity matrix. Using this approach, eight different Cyp (CypA, CypB, CypC, Cyp40 (PPID), CypE, CypD (PPIF), CypH, and CypL1) were unambiguously detected in healthy human blood plasma. Moreover, extracellular CypA was found to be partially modified by Nε acetylation on residues Lys44, Lys133, Lys155, as well as Nα acetylation at the N-terminal Val residue. Nα acetylation of Ser2 residue was also found for Cyp40.
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Affiliation(s)
- Michael Schumann
- Department of Enzymology, Institute of Biochemistry und Biotechnology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Christian H Ihling
- Department of Pharmaceutical Chemistry and Bioanalytics, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Erik Prell
- Branch Office Halle, Max-Planck Institute for Biophysical Chemistry, Göttingen, Halle, Germany
| | - Angelika Schierhorn
- Department of Enzymology, Institute of Biochemistry und Biotechnology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andrea Sinz
- Department of Pharmaceutical Chemistry and Bioanalytics, Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Gunter Fischer
- Branch Office Halle, Max-Planck Institute for Biophysical Chemistry, Göttingen, Halle, Germany
| | - Cordelia Schiene-Fischer
- Department of Enzymology, Institute of Biochemistry und Biotechnology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Miroslav Malešević
- Department of Enzymology, Institute of Biochemistry und Biotechnology, Martin-Luther-University Halle-Wittenberg, Halle, Germany.
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17
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Ren YX, Wang SJ, Fan JH, Sun SJ, Li X, Padhiar AA, Zhang JN. CD147 stimulates hepatoma cells escaping from immune surveillance of T cells by interaction with Cyclophilin A. Biomed Pharmacother 2016; 80:289-297. [PMID: 27133068 DOI: 10.1016/j.biopha.2016.03.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/25/2016] [Indexed: 11/17/2022] Open
Abstract
T cells play an important role in tumor immune surveillance. CD147 is a member of immunoglobulin superfamily present on the surface of many tumor cells and mediates malignant cell behaviors. Cyclophilin A (CypA) is an intracellular protein promoting inflammation when released from cells. CypA is a natural ligand for CD147. In this study, CD147 specific short hairpin RNAs (shRNA) were transfected into murine hepatocellular carcinoma Hepa1-6 cells to assess the effects of CD147 on hepatoma cells escaping from immune surveillance of T cells. We found extracellular CypA stimulated cell proliferation through CD147 by activating ERK1/2 signaling pathway. Downregulation of CD147 expression on Hepa1-6 cells significantly suppressed tumor progression in vivo, and decreased cell viability when co-cultured with T cells in vitro. Importantly, knockdown of CD147 on Hepa1-6 cells resulted in significantly increased T cells chemotaxis induced by CypA both in vivo and in vitro. These findings provide novel mechanisms how tumor cells escaping from immune surveillance of T cells. We provide a potential therapy for hepatocellular carcinoma by targeting CD147 or CD147-CypA interactions.
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Affiliation(s)
- Yi-Xin Ren
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China; Department of Parasitology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Shu-Jing Wang
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Jian-Hui Fan
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Shi-Jie Sun
- Department of Immunology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Xia Li
- Department of Immunology, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Arshad Ahmed Padhiar
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China
| | - Jia-Ning Zhang
- Department of Biochemistry, Dalian Medical University, 9 South Lvshun Road Western Section, Dalian 116044, Liaoning, China; School of Life Science and Medicine, Dalian University of Technology, 2 Linggong Road, Dalian 116024, Liaoning, China.
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18
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Holliday MJ, Camilloni C, Armstrong GS, Isern NG, Zhang F, Vendruscolo M, Eisenmesser EZ. Structure and Dynamics of GeoCyp: A Thermophilic Cyclophilin with a Novel Substrate Binding Mechanism That Functions Efficiently at Low Temperatures. Biochemistry 2015; 54:3207-17. [PMID: 25923019 DOI: 10.1021/acs.biochem.5b00263] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermophilic proteins have found extensive use in research and industrial applications because of their high stability and functionality at elevated temperatures while simultaneously providing valuable insight into our understanding of protein folding, stability, dynamics, and function. Cyclophilins, constituting a ubiquitously expressed family of peptidyl-prolyl isomerases with a range of biological functions and disease associations, have been utilized both for conferring stress tolerances and in exploring the link between conformational dynamics and enzymatic function. To date, however, no active thermophilic cyclophilin has been fully biophysically characterized. Here, we determine the structure of a thermophilic cyclophilin (GeoCyp) from Geobacillus kaustophilus, characterize its dynamic motions over several time scales using an array of methodologies that include chemical shift-based methods and relaxation experiments over a range of temperatures, and measure catalytic activity over a range of temperatures to compare its structure, dynamics, and function to those of a mesophilic counterpart, human cyclophilin A (CypA). Unlike those of most thermophile/mesophile pairs, GeoCyp catalysis is not substantially impaired at low temperatures as compared to that of CypA, retaining ~70% of the activity of its mesophilic counterpart. Examination of substrate-bound ensembles reveals a mechanism by which the two cyclophilins may have adapted to their environments through altering dynamic loop motions and a critical residue that acts as a clamp to regulate substrate binding differentially in CypA and GeoCyp. Fast time scale (pico- to nanosecond) dynamics are largely conserved between the two proteins, in accordance with the high degree of structural similarity, although differences do exist in their temperature dependencies. Slower (microsecond) time scale motions are likewise localized to similar regions in the two proteins with some variability in their magnitudes yet do not exhibit significant temperature dependencies in either enzyme.
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Affiliation(s)
- Michael J Holliday
- †Department of Biochemistry and Molecular Genetics, University of Colorado Denver, 12801 East 17th Avenue, Aurora, Colorado 80045, United States
| | - Carlo Camilloni
- ‡Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Geoffrey S Armstrong
- §Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Nancy G Isern
- ∥W. R. Wiley Environmental Molecular Sciences Laboratory, High Field NMR Facility, Richland, Washington 99354, United States
| | - Fengli Zhang
- ⊥National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | | | - Elan Z Eisenmesser
- †Department of Biochemistry and Molecular Genetics, University of Colorado Denver, 12801 East 17th Avenue, Aurora, Colorado 80045, United States
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19
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The roles of CD147 and/or cyclophilin A in kidney diseases. Mediators Inflamm 2014; 2014:728673. [PMID: 25580061 PMCID: PMC4281390 DOI: 10.1155/2014/728673] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 10/30/2014] [Accepted: 11/26/2014] [Indexed: 12/31/2022] Open
Abstract
CD147 is a widely expressed integral plasma membrane glycoprotein and has been involved in a variety of physiological and pathological activities in combination with different partners, including cyclophilins, caveolin-1, monocarboxylate transporters, and integrins. Recent data demonstrate that both CyPA and CD147 significantly contribute to renal inflammation, acute kidney injury, renal fibrosis, and renal cell carcinoma. Here we review the current understanding of cyclophilin A and CD147 expression and functions in kidney diseases and potential implications for treatment of kidney diseases.
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20
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Bukrinsky M. Extracellular cyclophilins in health and disease. Biochim Biophys Acta Gen Subj 2014; 1850:2087-95. [PMID: 25445705 PMCID: PMC4436085 DOI: 10.1016/j.bbagen.2014.11.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/11/2014] [Accepted: 11/14/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Extracellular cyclophilins (eCyPs) are pro-inflammatory factors implicated in pathogenesis of a number of inflammatory diseases. Most pathogenic activities of eCyPs are related to their chemotactic action towards leukocytes, which is mediated by eCyP receptor on target cells, CD147, and involves peptidyl-prolyl cis-trans isomerase activity of cyclophilins. This activity is inhibited by cyclosporine A (CsA) and non-immunosuppressive derivatives of this drug. Accumulating evidence for the role of eCyPs in disease pathogenesis stimulated research on the mechanisms of eCyP-initiated events, resulting in identification of multiple signaling pathways, characterization of a variety of effector molecules released from eCyP-treated cells, and synthesis of CsA derivatives specifically blocking eCyPs. However, a number of important questions related to the mode of action of eCyPs remain unanswered. SCOPE OF REVIEW In this article, we integrate available information on release and function of extracellular cyclophilins into a unified model, focusing on outstanding issues that need to be clarified. MAJOR CONCLUSIONS Extracellular cyclophilins are critical players in pathogenesis of a number of inflammatory diseases. Their mechanism of action involves interaction with the receptor, CD147, and initiation of a poorly characterized signal transduction process culminating in chemotaxis and production of pro-inflammatory factors. GENERAL SIGNIFICANCE Extracellular cyclophilins present an attractive target for therapeutic interventions that can be used to alleviate symptoms and consequences of acute and chronic inflammation. This article is part of a Special Issue entitled Proline-directed Foldases: Cell Signaling Catalysts and Drug Targets.
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Affiliation(s)
- Michael Bukrinsky
- George Washington University School of Medicine and Health Sciences, Washington, DC 20037, USA.
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Wang L, Jia J, Wang C, Ma X, Liao C, Fu Z, Wang B, Yang X, Zhu P, Li Y, Chen Z. Inhibition of synovitis and joint destruction by a new single domain antibody specific for cyclophilin A in two different mouse models of rheumatoid arthritis. Arthritis Res Ther 2014; 15:R208. [PMID: 24314202 PMCID: PMC3978695 DOI: 10.1186/ar4401] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 11/27/2013] [Indexed: 12/11/2022] Open
Abstract
Introduction Cyclophilin A (CypA) is implicated in rheumatoid arthritis (RA) pathogenesis. We studied whether a novel anti-CypA single domain antibody (sdAb) treatment would modulate the severity of the disease in two different animal models of RA. Methods A novel sdAb, named sdAbA1, was screened from an immunized camel sdAb library and found to have a high binding affinity (KD = 6.9 × 10-9 M) for CypA. The SCID-HuRAg model and the collagen-induced arthritis (CIA) in mice were used to evaluate the effects of sdAbA1 treatment on inflammation and joint destruction. For in vitro analysis, monocytes/macrophages were purified from synovial fluid and peripheral blood of patients with RA and were tested for the effect of anti-CypA sdAb on metalloproteinase (MMP) production. Human monocyte cell line THP-1 cells were selected and western blot analyses were performed to examine the potential signaling pathways. Results In the CIA model of RA, the sdAbA1 treatment resulted in a significant decrease in clinical symptoms as well as of joint damage (P <0.05). In the SCID-HuRAg model, treatment with anti-CypA antibody sdAbA1 significantly reduced cartilage erosion, inflammatory cell numbers and MMP-9 production in the implanted tissues (P <0.05). It also significantly reduced the levels of human inflammatory cytokines IL-6 and IL-8 in mouse serum (P <0.05). No toxic effects were observed in the two animal models. In vitro results showed that sdAbA1 could counteract CypA-dependent MMP-9 secretion and IL-8 production by interfering with the ERK-NF-κB pathway. Conclusions Blockade of CypA significantly inhibited synovitis and cartilage/bone erosion in the two tested animal models of RA. Our findings provide evidence that sdAbA1 may be a potential therapeutic agent for RA.
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Xiong L, Edwards CK, Zhou L. The biological function and clinical utilization of CD147 in human diseases: a review of the current scientific literature. Int J Mol Sci 2014; 15:17411-41. [PMID: 25268615 PMCID: PMC4227170 DOI: 10.3390/ijms151017411] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 09/08/2014] [Accepted: 09/16/2014] [Indexed: 02/05/2023] Open
Abstract
CD147 or EMMPRIN is a member of the immunoglobulin superfamily in humans. It is widely expressed in human tumors and plays a central role in the progression of many cancers by stimulating the secretion of matrix metalloproteinases (MMPs) and cytokines. CD147 regulates cell proliferation, apoptosis, and tumor cell migration, metastasis and differentiation, especially under hypoxic conditions. CD147 is also important to many organ systems. This review will provide a detailed overview of the discovery, characterization, molecular structure, diverse biological functions and regulatory mechanisms of CD147 in human physiological and pathological processes. In particular, recent studies have demonstrated the potential application of CD147 not only as a phenotypic marker of activated regulatory T cells but also as a potential diagnostic marker for early-stage disease. Moreover, CD147 is recognized as an effective therapeutic target for hepatocellular carcinoma (HCC) and other cancers, and exciting clinical progress has been made in HCC treatment using CD147-directed monoclonal antibodies.
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Affiliation(s)
- Lijuan Xiong
- Central Laboratory, Navy General Hospital, Beijing 100048, China.
| | - Carl K Edwards
- National Key Laboratory of Biotherapy and Cancer Research (NKLB), West China Hospital and Medical School, Sichuan University, Chengdu 610041, China.
| | - Lijun Zhou
- Central Laboratory, Navy General Hospital, Beijing 100048, China.
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Cyclophilin A catalyzes proline isomerization by an electrostatic handle mechanism. Proc Natl Acad Sci U S A 2014; 111:10203-8. [PMID: 24982184 DOI: 10.1073/pnas.1404220111] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Proline isomerization is a ubiquitous process that plays a key role in the folding of proteins and in the regulation of their functions. Different families of enzymes, known as "peptidyl-prolyl isomerases" (PPIases), catalyze this reaction, which involves the interconversion between the cis and trans isomers of the N-terminal amide bond of the amino acid proline. However, complete descriptions of the mechanisms by which these enzymes function have remained elusive. We show here that cyclophilin A, one of the most common PPIases, provides a catalytic environment that acts on the substrate through an electrostatic handle mechanism. In this mechanism, the electrostatic field in the catalytic site turns the electric dipole associated with the carbonyl group of the amino acid preceding the proline in the substrate, thus causing the rotation of the peptide bond between the two residues. We identified this mechanism using a combination of NMR measurements, molecular dynamics simulations, and density functional theory calculations to simultaneously determine the cis-bound and trans-bound conformations of cyclophilin A and its substrate as the enzymatic reaction takes place. We anticipate that this approach will be helpful in elucidating whether the electrostatic handle mechanism that we describe here is common to other PPIases and, more generally, in characterizing other enzymatic processes.
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Holliday MJ, Zhang F, Isern NG, Armstrong GS, Eisenmesser EZ. 1H, 13C, and 15N backbone and side chain resonance assignments of thermophilic Geobacillus kaustophilus cyclophilin-A. BIOMOLECULAR NMR ASSIGNMENTS 2014; 8:23-27. [PMID: 23138858 PMCID: PMC4084936 DOI: 10.1007/s12104-012-9445-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 11/02/2012] [Indexed: 06/01/2023]
Abstract
Cyclophilins catalyze the reversible peptidyl-prolyl isomerization of their substrates and are present across all kingdoms of life from humans to bacteria. Although numerous biological roles have now been discovered for cyclophilins, their function was initially ascribed to their chaperone-like activity in protein folding where they catalyze the often rate-limiting step of proline isomerization. This chaperone-like activity may be especially important under extreme conditions where cyclophilins are often over expressed, such as in tumors for human cyclophilins (Lee Archiv Pharm Res 33(2): 181-187, 2010), but also in organisms that thrive under extreme conditions, such as theromophilic bacteria. Moreover, the reversible nature of the peptidyl-prolyl isomerization reaction catalyzed by cyclophilins has allowed these enzymes to serve as model systems for probing the role of conformational changes during catalytic turnover (Eisenmesser et al. Science 295(5559): 1520-1523, 2002; Eisenmesser et al. Nature 438(7064): 117-121, 2005). Thus, we present here the resonance assignments of a thermophilic cyclophilin from Geobacillus kaustophilus derived from deep-sea sediment (Takami et al. Extremophiles 8(5): 351-356, 2004). This thermophilic cyclophilin may now be studied at a variety of temperatures to provide insight into the comparative structure, dynamics, and catalytic mechanism of cyclophilins.
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Affiliation(s)
- Michael J Holliday
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, 12801 E 17th Ave, Aurora, CO, 80045, USA,
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Abstract
Cyclophilin A (CyPA) is an abundantly expressed intracellular protein. It exerts a variety of functions due to its peptidyl-prolyl cis-trans isomerase (PPIase) activity. When released into the extracellular space, CyPA binds to its extracellular receptor CD147 (EMMPRIN) and thereby initiates a cascade of inflammatory processes. Recent data indicate that both extra- and intracellular CyPA significantly contribute to cardiovascular inflammation, myocardial ischaemia and reperfusion injury, and myocardial remodelling processes. Thus, CyPA appears to represent a novel target to treat vascular and myocardial inflammation.
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Affiliation(s)
- Peter Seizer
- Medizinische Klinik III, Kardiologie und Kreislauferkrankungen, Eberhard Karls-Universität Tübingen, Otfried-Müller Str.10, Tübingen 72076, Germany
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Keeney JTR, Förster S, Sultana R, Brewer LD, Latimer CS, Cai J, Klein JB, Porter NM, Butterfield DA. Dietary vitamin D deficiency in rats from middle to old age leads to elevated tyrosine nitration and proteomics changes in levels of key proteins in brain: implications for low vitamin D-dependent age-related cognitive decline. Free Radic Biol Med 2013; 65:324-334. [PMID: 23872023 PMCID: PMC3859828 DOI: 10.1016/j.freeradbiomed.2013.07.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 07/10/2013] [Accepted: 07/11/2013] [Indexed: 12/22/2022]
Abstract
In addition to the well-known effects of vitamin D (VitD) in maintaining bone health, there is increasing appreciation that this vitamin may serve important roles in other organs and tissues, including the brain. Given that VitD deficiency is especially widespread among the elderly, it is important to understand how the range of serum VitD levels that mimic those found in humans (from low to high) affects the brain during aging from middle age to old age. To address this issue, 27 male F344 rats were split into three groups and fed isocaloric diets containing low (100 IU/kg food), control (1000 IU/kg food), or high (10,000 IU/kg food) VitD beginning at middle age (12 months) and continued for a period of 4-5 months. We compared the effects of these dietary VitD manipulations on oxidative and nitrosative stress measures in posterior brain cortices. The low-VitD group showed global elevation of 3-nitrotyrosine compared to control and high-VitD-treated groups. Further investigation showed that this elevation may involve dysregulation of the nuclear factor κ-light-chain enhancer of activated B cells (NF-κB) pathway and NF-κB-mediated transcription of inducible nitric oxide synthase (iNOS) as indicated by translocation of NF-κB to the nucleus and elevation of iNOS levels. Proteomics techniques were used to provide insight into potential mechanisms underlying these effects. Several brain proteins were found at significantly elevated levels in the low-VitD group compared to the control and high-VitD groups. Three of these proteins, 6-phosphofructokinase, triose phosphate isomerase, and pyruvate kinase, are involved directly in glycolysis. Two others, peroxiredoxin-3 and DJ-1/PARK7, have peroxidase activity and are found in mitochondria. Peptidyl-prolyl cis-trans isomerase A (cyclophilin A) has been shown to have multiple roles, including protein folding, regulation of protein kinases and phosphatases, immunoregulation, cell signaling, and redox status. Together, these results suggest that dietary VitD deficiency contributes to significant nitrosative stress in brain and may promote cognitive decline in middle-aged and elderly adults.
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Affiliation(s)
- Jeriel T R Keeney
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Sarah Förster
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Rukhsana Sultana
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA
| | - Lawrence D Brewer
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Caitlin S Latimer
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Jian Cai
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Jon B Klein
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, KY 40292, USA
| | - Nada M Porter
- Department of Molecular and Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - D Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA.
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Malesevic M, Gutknecht D, Prell E, Klein C, Schumann M, Nowak RA, Simon JC, Schiene-Fischer C, Saalbach A. Anti-inflammatory effects of extracellular cyclosporins are exclusively mediated by CD147. J Med Chem 2013; 56:7302-11. [PMID: 23964991 DOI: 10.1021/jm4007577] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Leukocyte trafficking and recruitment is a critical process in host immune surveillance and in inflammatory diseases. Extracellular cyclophilins (eCyps) have been identified as a novel class of chemotactic mediators. The impact of eCyp/CD147 interactions for the recruitment of leukocytes during inflammation was analyzed using a structurally simplified cell-impermeable eCyp inhibitor. This compound was highly effective at inhibiting leukocyte migration toward CypA in vitro as well as in the recruitment of leukocytes during inflammation in a mouse model of experimentally induced peritonitis and delayed-type hypersensitivity reaction. By using CD147-/- mice in combination with the cell-impermeable eCyp inhibitor, we were able to show that the action of eCyps in inflammation is exclusively mediated by interaction with CD147. Our findings suggest that blocking eCyps may be an effective therapeutic target for reducing inflammatory diseases associated with leukocyte recruitment.
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Affiliation(s)
- Miroslav Malesevic
- Max-Planck Research Unit for Enzymology of Protein Folding , Weinbergweg 22, 06120 Halle (Saale), Germany
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Extracellular vesicles secreted from cancer cell lines stimulate secretion of MMP-9, IL-6, TGF-β1 and EMMPRIN. PLoS One 2013; 8:e71225. [PMID: 23936495 PMCID: PMC3731303 DOI: 10.1371/journal.pone.0071225] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 06/30/2013] [Indexed: 02/07/2023] Open
Abstract
Extracellular vesicles (EVs) are key contributors to cancer where they play an integral role in cell-cell communication and transfer pro-oncogenic molecules to recipient cells thereby conferring a cancerous phenotype. Here, we purified EVs using straightforward biochemical approaches from multiple cancer cell lines and subsequently characterized these EVs via multiple biochemical and biophysical methods. In addition, we used fluorescence microscopy to directly show internalization of EVs into the recipient cells within a few minutes upon addition of EVs to recipient cells. We confirmed that the transmembrane protein EMMPRIN, postulated to be a marker of EVs, was indeed secreted from all cell lines studied here. We evaluated the response to EV stimulation in several different types of recipient cells lines and measured the ability of these purified EVs to induce secretion of several factors highly upregulated in human cancers. Our data indicate that purified EVs preferentially stimulate secretion of several proteins implicated in driving cancer in monocytic cells but only harbor limited activity in epithelial cells. Specifically, we show that EVs are potent stimulators of MMP-9, IL-6, TGF-β1 and induce the secretion of extracellular EMMPRIN, which all play a role in driving immune evasion, invasion and inflammation in the tumor microenvironment. Thus, by using a comprehensive approach that includes biochemical, biological, and spectroscopic methods, we have begun to elucidate the stimulatory roles.
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Piechota-Polanczyk A, Demyanets S, Nykonenko O, Huk I, Mittlboeck M, Domenig CM, Neumayer C, Wojta J, Nanobachvili J, Klinger M. Decreased tissue levels of cyclophilin A, a cyclosporine a target and phospho-ERK1/2 in simvastatin patients with abdominal aortic aneurysm. Eur J Vasc Endovasc Surg 2013; 45:682-8. [PMID: 23558220 DOI: 10.1016/j.ejvs.2013.02.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 02/21/2013] [Indexed: 01/27/2023]
Abstract
BACKGROUND Cyclophilin A (CyPA), a cyclosporine A-binding protein, influences abdominal aortic aneurysm (AAA) formation and the ERK1/2 signalling pathway in animal and in vitro studies. Statins decrease CyPA in smooth muscle cells although their influence on CyPA in human AAA is unknown. MATERIAL AND METHODS The study was performed on AAA wall-tissue samples obtained from 30 simvastatin-treated and 15 non-statin patients (2:1 case to control). The patients were matched by age, sex and AAA diameter. We investigated the gene expression of CyPA, its receptor extracellular matrix metalloproteinase inducer (EMMPRIN) by real-time RT-PCR. CyPA and EMMPRIN protein level and phosphorylated extracellular signal-regulated kinases 1 and 2 (ERK1/2) were measured by Western blot. RESULTS The AAA wall tissue from simvastatin-treated patients had significantly lower CyPA gene expression and protein levels (P = 0.0018, P = 0.0083, respectively). Furthermore, phosphorylation of ERK1 and ERK2 was markedly suppressed in the simvastatin group (P = 0.0002, P = 0.0027, respectively). However, simvastatin did not influence EMMPRIN gene and protein expression. CONCLUSION Simvastatin-treated patients with AAA exert lower CyPA messenger RNA (mRNA), as well as CyPA intracellular protein levels and a decreased amount of phospho-ERK1/2. Thus, the interference with signalling pathways leading to CyPA formation and ERK1/2 activation reveals a new anti-inflammatory role of statins in AAA.
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Affiliation(s)
- A Piechota-Polanczyk
- Department of Cardiovascular Physiology, Chair of Experimental and Clinical Physiology, Medical University of Łódź, Łódź, Poland
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