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Aihaiti Y, Zheng H, Cai Y, Tuerhong X, Kaerman M, Wang F, Xu P. Exploration and validation of therapeutic molecules for rheumatoid arthritis based on ferroptosis-related genes. Life Sci 2024; 351:122780. [PMID: 38866217 DOI: 10.1016/j.lfs.2024.122780] [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: 01/03/2024] [Revised: 05/16/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024]
Abstract
AIMS This study aimed to identify hub ferroptosis-related genes (FRGs) and investigate potential therapy for RA based on FRGs. MAIN METHODS The differentially expressed FRGs in synovial tissue of RA patients were obtained from the dataset GSE12021 (GPL96). Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses were conducted to investigate the potential signaling pathways associated with FRGs. Hub genes were identified through topological analysis. The expression levels of these hub genes as well as their diagnostic accuracies were further evaluated. Connectivity Map (CMap) database was utilized to analyze the top 10 FRGs-guided potential drugs for RA. In vitro and in vivo experiments were carried out for further validation. KEY FINDINGS 2 hub genes among 58 FRGs were identified (EGR1 and CDKN1A), and both were down regulated in RA synovial tissue. GPx4 expression was also decreased in the RA synovial tissue. The natural compound withaferin-a exhibited the highest negative CMap score. In-vitro and in-vivo experiments demonstrated anti-arthritic effects of withaferin-a. SIGNIFICANCE Ferroptosis participates in pathogenesis of RA, ferroptosis-related genes EGR1 and CDKN1A can be used as diagnostic and therapeutic targets for RA. Withaferin-a can be used as potential anti-arthritic treatment.
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Affiliation(s)
- Yirixiati Aihaiti
- Department of Joint Surgery, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China; Translational Medicine Centre, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Haishi Zheng
- Department of Joint Surgery, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Yongsong Cai
- Department of Joint Surgery, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Xiadiye Tuerhong
- Translational Medicine Centre, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Minawaer Kaerman
- Department of Rheumatology, Immunology and Endocrinology, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Fan Wang
- Department of Joint Surgery, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China
| | - Peng Xu
- Department of Joint Surgery, Xi'an Jiaotong University Affiliated HongHui Hospital, Xi'an, China.
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2
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Wu LH, Cheng YW, Lin FL, Hsu KC, Wang MH, Yen JL, Wang TJ, Lin TE, Liu YC, Huang WJ, Hsiao G. A novel HDAC8 inhibitor H7E exerts retinoprotective effects against glaucomatous injury via ameliorating aberrant Müller glia activation and oxidative stress. Biomed Pharmacother 2024; 174:116538. [PMID: 38579401 DOI: 10.1016/j.biopha.2024.116538] [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: 01/05/2024] [Revised: 03/18/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024] Open
Abstract
Glaucoma is considered a neurodegenerative disease characterized by progressive visual field defects that may lead to blindness. Although controlling intraocular pressure (IOP) is the mainstay of glaucoma treatment, some glaucoma patients have unmet needs due to unclear pathogenic mechanisms. Recently, there has been growing evidence that neuroinflammation is a potential target for the development of novel antiglaucoma agents. In this study, we investigated the protective effects and cellular mechanisms of H7E, a novel small molecule inhibits HDAC8, using in vitro and in vivo glaucoma-like models. Importantly, H7E mitigated extracellular MMP-9 activity and MCP-1 levels in glutamate- or S100B-stimulated reactive Müller glia. In addition, H7E inhibited the upregulation of inflammation- and proliferation-related signaling pathways, particularly the ERK and JNK MAPK pathways. Under conditions of oxidative damage, H7E prevents retinal cell death and reduces extracellular glutamate released from stressed Müller glia. In a mouse model of NMDA-induced retinal degeneration, H7E alleviated functional and structural defects within the inner retina as assessed by electroretinography and optical coherence tomography. Our results demonstrated that the newly identified compound H7E protects against glaucoma damage by specifically targeting HDAC8 activity in the retina. This protective effect is attributed to the inhibition of Müller glial activation and the prevention of retinal cell death caused by oxidative stress.
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Affiliation(s)
- Liang-Huan Wu
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - Yu-Wen Cheng
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan; Department of Pharmaceutical Sciences, School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - Fan-Li Lin
- Department of Pharmacology, School of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., Kaohsiung 807, Taiwan.
| | - Kai-Cheng Hsu
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan; Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, 301 Yuantong Rd., New Taipei 235, Taiwan.
| | - Mong-Heng Wang
- Independent Scholar, 3466 Rhodes Hill Drive, Martinez, GA 30907, USA.
| | - Jing-Lun Yen
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - Tsung-Jen Wang
- Department of Ophthalmology, Taipei Medical University Hospital, 252 Wu-Hsing St., Taipei 110, Taiwan; Department of Ophthalmology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - Tony Eight Lin
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, 301 Yuantong Rd., New Taipei 235, Taiwan.
| | - Yi-Chien Liu
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - Wei-Jan Huang
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan; Department of Pharmaceutical Sciences, School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
| | - George Hsiao
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan; Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan; Department of Ophthalmology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing St., Taipei 110, Taiwan.
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3
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Li C, Deng C, Wang S, Dong X, Dai B, Guo W, Guo Q, Feng Y, Xu H, Song X, Cao L. A novel role for the ROS-ATM-Chk2 axis mediated metabolic and cell cycle reprogramming in the M1 macrophage polarization. Redox Biol 2024; 70:103059. [PMID: 38316066 PMCID: PMC10862067 DOI: 10.1016/j.redox.2024.103059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/10/2024] [Accepted: 01/24/2024] [Indexed: 02/07/2024] Open
Abstract
Reactive oxygen species (ROS) play a pivotal role in macrophage-mediated acute inflammation. However, the precise molecular mechanism by which ROS regulate macrophage polarization remains unclear. Here, we show that ROS function as signaling molecules that regulate M1 macrophage polarization through ataxia-telangiectasia mutated (ATM) and cell cycle checkpoint kinase 2 (Chk2), vital effector kinases in the DNA damage response (DDR) signaling pathway. We further demonstrate that Chk2 phosphorylates PKM2 at the T95 and T195 sites, promoting glycolysis and facilitating macrophage M1 polarization. In addition, Chk2 activation increases the Chk2-dependent expression of p21, inducing cell cycle arrest for subsequent macrophage M1 polarization. Finally, Chk2-deficient mice infected with lipopolysaccharides (LPS) display a significant decrease in lung inflammation and M1 macrophage counts. Taken together, these results suggest that inhibiting the ROS-Chk2 axis can prevent the excessive inflammatory activation of macrophages, and this pathway can be targeted to develop a novel therapy for inflammation-associated diseases and expand our understanding of the pathophysiological functions of DDR in innate immunity.
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Affiliation(s)
- Chunlu Li
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Chengsi Deng
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Siwei Wang
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Xiang Dong
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Bing Dai
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Wendong Guo
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Qiqiang Guo
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Yanling Feng
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Hongde Xu
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Xiaoyu Song
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China
| | - Liu Cao
- The College of Basic Medical Science, Health Sciences Institute, China Medical University, Shenyang, Liaoning Province, China; Key Laboratory of Cell Biology of Ministry of Public Health, Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors of Ministry of Education, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, China Medical University, Shenyang, Liaoning Province, China.
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4
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Zheng J, Ma Y, Guo X, Wu J. Immunological characterization of stroke-heart syndrome and identification of inflammatory therapeutic targets. Front Immunol 2023; 14:1227104. [PMID: 37965346 PMCID: PMC10642553 DOI: 10.3389/fimmu.2023.1227104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/16/2023] [Indexed: 11/16/2023] Open
Abstract
Acute cardiac dysfunction caused by stroke-heart syndrome (SHS) is the second leading cause of stroke-related death. The inflammatory response plays a significant role in the pathophysiological process of cardiac damage. However, the mechanisms underlying the brain-heart interaction are poorly understood. Therefore, we aimed to analysis the immunological characterization and identify inflammation therapeutic targets of SHS. We analyzed gene expression data of heart tissue 24 hours after induction of ischemia stoke by MCAO or sham surgery in a publicly available dataset (GSE102558) from Gene Expression Omnibus (GEO). Bioinformatics analysis revealed 138 differentially expressed genes (DEGs) in myocardium of MCAO-treated compared with sham-treated mice, among which, immune and inflammatory pathways were enriched. Analysis of the immune cells infiltration showed that the natural killer cell populations were significantly different between the two groups. We identified five DIREGs, Aplnr, Ccrl2, Cdkn1a, Irak2, and Serpine1 and found that their expression correlated with specific populations of infiltrating immune cells in the cardiac tissue. RT-qPCR and Western blot methods confirmed significant changes in the expression levels of Aplnr, Cdkn1a, Irak2, and Serpine1 after MCAO, which may serve as therapeutic targets to prevent cardiovascular complications after stroke.
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Affiliation(s)
- Junyi Zheng
- Department of Cardiology, Tianjin Chest Hospital, Tianjin Institute of Cardiovascular Disease, Tianjin, China
- Chest Hospital, Tianjin University, Tianjin, China
| | - Yilin Ma
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Xukun Guo
- Department of Cardiology, Tianjin Chest Hospital, Tianjin Institute of Cardiovascular Disease, Tianjin, China
- Chest Hospital, Tianjin University, Tianjin, China
| | - Jialing Wu
- Department of Neurology, Department of Rehabilitation Medicine, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
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5
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Zuo C, Baer JM, Knolhoff BL, Belle JI, Liu X, Alarcon De La Lastra A, Fu C, Hogg GD, Kingston NL, Breden MA, Dodhiawala PB, Zhou DC, Lander VE, James CA, Ding L, Lim KH, Fields RC, Hawkins WG, Weber JD, Zhao G, DeNardo DG. Stromal and therapy-induced macrophage proliferation promotes PDAC progression and susceptibility to innate immunotherapy. J Exp Med 2023; 220:e20212062. [PMID: 36951731 PMCID: PMC10072222 DOI: 10.1084/jem.20212062] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 07/08/2022] [Accepted: 02/01/2023] [Indexed: 03/24/2023] Open
Abstract
Tumor-associated macrophages (TAMs) are abundant in pancreatic ductal adenocarcinomas (PDACs). While TAMs are known to proliferate in cancer tissues, the impact of this on macrophage phenotype and disease progression is poorly understood. We showed that in PDAC, proliferation of TAMs could be driven by colony stimulating factor-1 (CSF1) produced by cancer-associated fibroblasts. CSF1 induced high levels of p21 in macrophages, which regulated both TAM proliferation and phenotype. TAMs in human and mouse PDACs with high levels of p21 had more inflammatory and immunosuppressive phenotypes. p21 expression in TAMs was induced by both stromal interaction and/or chemotherapy treatment. Finally, by modeling p21 expression levels in TAMs, we found that p21-driven macrophage immunosuppression in vivo drove tumor progression. Serendipitously, the same p21-driven pathways that drive tumor progression also drove response to CD40 agonist. These data suggest that stromal or therapy-induced regulation of cell cycle machinery can regulate both macrophage-mediated immune suppression and susceptibility to innate immunotherapy.
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Affiliation(s)
- Chong Zuo
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - John M. Baer
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Brett L. Knolhoff
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Jad I. Belle
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Xiuting Liu
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Christina Fu
- Department of Biology, Grinnell College, Grinnell, IA, USA
| | - Graham D. Hogg
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Natalie L. Kingston
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Marcus A. Breden
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Paarth B. Dodhiawala
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Daniel Cui Zhou
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Varintra E. Lander
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - C. Alston James
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
- Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Li Ding
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
| | - Kian-Huat Lim
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
| | - Ryan C. Fields
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
- Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - William G. Hawkins
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
- Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Jason D. Weber
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Guoyan Zhao
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Neuroscience, Washington University School of Medicine, St. Louis, MO, USA
| | - David G. DeNardo
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA
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Takashima Y, Hayashi S, Fukuda K, Maeda T, Tsubosaka M, Kamenaga T, Kikuchi K, Fujita M, Kuroda Y, Hashimoto S, Nakano N, Matsumoto T, Kuroda R. Susceptibility of cyclin-dependent kinase inhibitor 1-deficient mice to rheumatoid arthritis arising from interleukin-1β-induced inflammation. Sci Rep 2021; 11:12516. [PMID: 34131243 PMCID: PMC8206139 DOI: 10.1038/s41598-021-92055-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 05/28/2021] [Indexed: 11/09/2022] Open
Abstract
We recently reported that cyclin-dependent kinase inhibitor 1 (p21) deficiency induces osteoarthritis susceptibility. Here, we determined the mechanism underlying the effect of p21 in synovial and cartilage tissues in RA. The knee joints of p21-knockout (p21-/-) (n = 16) and wild type C57BL/6 (p21+/+) mice (n = 16) served as in vivo models of collagen antibody-induced arthritis (CAIA). Arthritis severity was evaluated by immunological and histological analyses. The response of p21 small-interfering RNA (siRNA)-treated human RA FLSs (n = 5 per group) to interleukin (IL)-1β stimulation was determined in vitro. Arthritis scores were higher in p21-/- mice than in p21+/+ mice. More severe synovitis, earlier loss of Safranin-O staining, and cartilage destruction were observed in p21-/- mice compared to p21+/+ mice. p21-/- mice expressed higher levels of IL-1β, TNF-α, F4/80, CD86, p-IKKα/β, and matrix metalloproteinases (MMPs) in cartilage and synovial tissues via IL-1β-induced NF-kB signaling. IL-1β stimulation significantly increased IL-6, IL-8, and MMP expression, and enhanced IKKα/β and IκBα phosphorylation in human FLSs. p21-deficient CAIA mice are susceptible to RA phenotype alterations, including joint cartilage destruction and severe synovitis. Therefore, p21 may have a regulatory role in inflammatory cytokine production including IL-1β, IL-6, and TNF-α.
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Affiliation(s)
- Yoshinori Takashima
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Koji Fukuda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Toshihisa Maeda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masanori Tsubosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Tomoyuki Kamenaga
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Kenichi Kikuchi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masahiro Fujita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yuichi Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shingo Hashimoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Naoki Nakano
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-2, Kusunoki-chou, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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7
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ElTanbouly MA, Zhao Y, Schaafsma E, Burns CM, Mabaera R, Cheng C, Noelle RJ. VISTA: A Target to Manage the Innate Cytokine Storm. Front Immunol 2021; 11:595950. [PMID: 33643285 PMCID: PMC7905033 DOI: 10.3389/fimmu.2020.595950] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022] Open
Abstract
In recent years, the success of immunotherapy targeting immunoregulatory receptors (immune checkpoints) in cancer have generated enthusiastic support to target these receptors in a wide range of other immune related diseases. While the overwhelming focus has been on blockade of these inhibitory pathways to augment immunity, agonistic triggering via these receptors offers the promise of dampening pathogenic inflammatory responses. V-domain Ig suppressor of T cell activation (VISTA) has emerged as an immunoregulatory receptor with constitutive expression on both the T cell and myeloid compartments, and whose agonistic targeting has proven a unique avenue relative to other checkpoint pathways to suppress pathologies mediated by the innate arm of the immune system. VISTA agonistic targeting profoundly changes the phenotype of human monocytes towards an anti-inflammatory cell state, as highlighted by striking suppression of the canonical markers CD14 and Fcγr3a (CD16), and the almost complete suppression of both the interferon I (IFN-I) and antigen presentation pathways. The insights from these very recent studies highlight the impact of VISTA agonistic targeting of myeloid cells, and its potential therapeutic implications in the settings of hyperinflammatory responses such as cytokine storms, driven by dysregulated immune responses to viral infections (with a focus on COVID-19) and autoimmune diseases. Collectively, these findings suggest that the VISTA pathway plays a conserved, non-redundant role in myeloid cell function.
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Affiliation(s)
- Mohamed A. ElTanbouly
- Department of Microbiology and Immunology, Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Yanding Zhao
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Evelien Schaafsma
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | | | - Rodwell Mabaera
- Department of Medicine, Norris Cotton Cancer Center, Lebanon, NH, United States
| | - Chao Cheng
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, United States
- Institute for Clinical and Translational Research, Baylor College of Medicine, Houston, TX, United States
| | - Randolph J. Noelle
- Department of Microbiology and Immunology, Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
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Masson AO, Krawetz RJ. Understanding cartilage protection in OA and injury: a spectrum of possibilities. BMC Musculoskelet Disord 2020; 21:432. [PMID: 32620156 PMCID: PMC7334861 DOI: 10.1186/s12891-020-03363-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/25/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is a prevalent musculoskeletal disease resulting in progressive degeneration of the hyaline articular cartilage within synovial joints. Current repair treatments for OA often result in poor quality tissue that is functionally ineffective compared to the hyaline cartilage and demonstrates increased failure rates post-treatment. Complicating efforts to improve clinical outcomes, animal models used in pre-clinical research show significant heterogeneity in their regenerative and degenerative responses associated with their species, age, genetic/epigenetic traits, and context of cartilage injury or disease. These can lead to variable outcomes when testing and validating novel therapeutic approaches for OA. Furthermore, it remains unclear whether protection against OA among different model systems is driven by inhibition of cartilage degeneration, enhancement of cartilage regeneration, or any combination thereof. MAIN TEXT Understanding the mechanistic basis underlying this context-dependent duality is essential for the rational design of targeted cartilage repair and OA therapies. Here, we discuss some of the critical variables related to the cross-species paradigm of degenerative and regenerative abilities found in pre-clinical animal models, to highlight that a gradient of regenerative competence within cartilage may exist across species and even in the greater human population, and likely influences clinical outcomes. CONCLUSIONS A more complete understanding of the endogenous regenerative potential of cartilage in a species specific context may facilitate the development of effective therapeutic approaches for cartilage injury and/or OA.
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Affiliation(s)
- Anand O Masson
- McCaig Institute for Bone & Joint Health, University of Calgary, Calgary, AB, Canada.,Biomedical Engineering Graduate Program, University of Calgary, Calgary, AB, Canada
| | - Roman J Krawetz
- McCaig Institute for Bone & Joint Health, University of Calgary, Calgary, AB, Canada. .,Biomedical Engineering Graduate Program, University of Calgary, Calgary, AB, Canada. .,Department Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada. .,Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, T2N 4N1, Canada.
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Siebert S, Pratt AG, Stocken DD, Morton M, Cranston A, Cole M, Frame S, Buckley CD, Ng WF, Filer A, McInnes IB, Isaacs JD. Targeting the rheumatoid arthritis synovial fibroblast via cyclin dependent kinase inhibition: An early phase trial. Medicine (Baltimore) 2020; 99:e20458. [PMID: 32590730 PMCID: PMC7328978 DOI: 10.1097/md.0000000000020458] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Targeted biologic therapies demonstrate similar efficacies in rheumatoid arthritis despite distinct mechanisms of action. They also exhibit a ceiling effect, with 10% to 20% of patients achieving remission in clinical trials. None of these therapies target synovial fibroblasts, which drive and maintain synovitis. Seliciclib (R-roscovitine) is an orally available cyclin-dependent kinase inhibitor that suppresses fibroblast proliferation, and is efficacious in preclinical arthritis models. We aim to determine the toxicity and preliminary efficacy of seliciclib in combination with biologic therapies, to inform its potential as an adjunctive therapy in rheumatoid arthritis. METHODS AND ANALYSIS TRAFIC is a non-commercial, multi-center, rolling phase Ib/IIa trial investigating the safety, tolerability, and efficacy of seliciclib in patients with moderate to severe rheumatoid arthritis receiving biologic therapies. All participants receive seliciclib with no control arm. The primary objective of part 1 (phase Ib) is to determine the maximum tolerated dose and safety of seliciclib over 4 weeks of dosing. Part 1 uses a restricted 1-stage Bayesian continual reassessment method based on a target dose-limiting toxicity probability of 35%. Part 2 (phase IIa) assesses the potential efficacy of seliciclib, and is designed as a single arm, single stage early phase trial based on a Fleming-A'Hern design using the maximum tolerated dose recommended from part 1. The primary response outcome after 12 weeks of therapy is a composite of clinical, histological and magnetic resonance imaging scores. Secondary outcomes include adverse events, pharmacodynamic and pharmacokinetic parameters, autoantibodies, and fatigue. ETHICS AND DISSEMINATION The study has been reviewed and approved by the North East - Tyne & Wear South Research Ethics Committee (reference 14/NE/1075) and the Medicines and Healthcare Products Regulatory Agency (MHRA), United Kingdom. Results will be disseminated through publication in relevant peer-reviewed journals and presentation at national and international conferences. TRIALS REGISTRATION ISRCTN, ISRCTN36667085. Registered on September 26, 2014; http://www.isrctn.com/ISRCTN36667085Current protocol version: Protocol version 11.0 (March 21, 2019).
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Affiliation(s)
- Stefan Siebert
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow
| | - Arthur G. Pratt
- Translational and Experimental Medicine Institute, Newcastle University and Musculoskeletal Unit, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | | | - Miranda Morton
- Institute of Health and Society, Newcastle University, Newcastle upon Tyne
| | - Amy Cranston
- Institute of Health and Society, Newcastle University, Newcastle upon Tyne
| | - Michael Cole
- Institute of Health and Society, Newcastle University, Newcastle upon Tyne
| | | | - Christopher D. Buckley
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham
- Kennedy Institute of Rheumatology, Roosevelt Drive, Headington University of Oxford, Oxford, UK
| | - Wan-Fai Ng
- Translational and Experimental Medicine Institute, Newcastle University and Musculoskeletal Unit, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | - Andrew Filer
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham
| | - Iain B. McInnes
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow
| | - John D. Isaacs
- Translational and Experimental Medicine Institute, Newcastle University and Musculoskeletal Unit, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
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10
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Mahendran SM, Keystone EC, Krawetz RJ, Liang K, Diamandis EP, Chandran V. Elucidating the endogenous synovial fluid proteome and peptidome of inflammatory arthritis using label-free mass spectrometry. Clin Proteomics 2019; 16:23. [PMID: 31160890 PMCID: PMC6542032 DOI: 10.1186/s12014-019-9243-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 05/24/2019] [Indexed: 12/20/2022] Open
Abstract
Background Inflammatory arthritis (IA) is an immunological disorder in which loss of immune tolerance to endogenous self-antigens perpetuates synovitis and eventual destruction of the underlying cartilage and bone. Pathological changes in the joint are expected to be represented by synovial fluid (SF) proteins and peptides. In the present study, a mass spectrometry-based approach was utilized for the identification of key protein and peptide mediators of IA. Methods Age-matched SF samples from 10 rheumatoid arthritis patients, 10 psoriatic arthritis patients and 10 cadaveric controls were subjected to an integrated proteomic and peptidomic protocol using liquid chromatography tandem mass spectrometry. Significant differentially abundant proteins and peptides were identified between cohorts according to the results of a Mann-Whitney U test coupled to the Benjamini-Hochberg correction for multiple hypothesis testing. Fold change ratios were computed for each protein and peptide according to their log-transformed extracted ion current. Pathway analysis and antimicrobial peptide (AMP) prediction were conducted to clarify the pathophysiological relevance of identified proteins and peptides to IA. Results We determined that 144 proteins showed significant differential abundance between the IA and control SF proteomes, of which 11 protein candidates were selected for future follow-up studies. Similar analyses applied to our peptidomic data identified 15 peptide sequences, originating from 4 protein precursors, to have significant differential abundance in IA compared to the control SF peptidome. Pathway enrichment analysis of the IA SF peptidome along with AMP prediction suggests a possible mechanistic role of microbes in eliciting an immune response which drives the development of IA. Conclusions The discovery-phase data generated herein has provided a basis for the identification of candidates with the greatest potential to serve as novel serum biomarkers specific to inflammatory arthritides. Moreover, these findings facilitate the understanding of possible disease mechanisms specific to each subtype.
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Affiliation(s)
- Shalini M Mahendran
- 1Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON Canada.,2Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON Canada
| | - Edward C Keystone
- 3Department of Rheumatology, Mount Sinai Hospital, Toronto, ON Canada
| | - Roman J Krawetz
- 4McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB Canada.,5Department of Surgery, University of Calgary, Calgary, AB Canada.,6Department of Anatomy and Cell Biology, University of Calgary, Calgary, AB Canada
| | - Kun Liang
- 7Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, ON Canada
| | - Eleftherios P Diamandis
- 1Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON Canada.,2Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON Canada.,8Department of Clinical Biochemistry, University Health Network, Toronto, ON Canada
| | - Vinod Chandran
- 1Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON Canada.,9Centre for Prognosis Studies in Rheumatic Diseases, Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, ON Canada.,10Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, ON Canada.,11Institute of Medical Science, University of Toronto, Toronto, ON Canada
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11
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Gang X, Xu H, Si L, Zhu X, Yu T, Jiang Z, Wang Y. Treatment effect of CDKN1A on rheumatoid arthritis by mediating proliferation and invasion of fibroblast-like synoviocytes cells. Clin Exp Immunol 2018; 194:220-230. [PMID: 29920650 DOI: 10.1111/cei.13161] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The objective of the present study was to evaluate the role of CDKN1A in rheumatoid arthritis (RA). Related gene expression data screened from Gene Expression Omnibus (GEO) were processed with network analysis. Protein-protein interaction was analysed through string database. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to measure mRNA and microRNA expression. Cell proliferation and cell cycle were tested by MTT assay and flow cytometry, respectively. Transwell migration and invasion assay was used to test cell migration and invasion. CDKN1A screened by bioinformatics methods showed differential expression in RA cells compared with healthy controls (HC), and was at an important position in the protein-protein interaction network of RA. Compared with the HC group, CDKN1A was down-regulated in human RA synovium tissues and human fibroblast-like synoviocytes (HFLS). Contrary to CDKN1A silencing, CDKN1A over-expression significantly inhibited the proliferation and invasion of HFLS-RA, arrested HFLS-RA in G0/G1 phase and down-regulated the expressions of tumour necrosis factor (TNF)-α and interleukin (IL)-6, while it up-regulated the expression of IL-10. CDKN1A over-expression could also suppress phosphorylated signal transducers and activators of transcription 1 (pSTAT-1) expression. MiR-146a, highly expressed in RA tissues, could regulate CDKN1A negatively. Anti-146a suppressed cell proliferation and invasion, and at the same time enhanced IL-10 expression but inhibited IL-6, TNF-α and pSTAT-1 expression. The results indicated that CDKN1A over-expression, which could be enhanced by miR-146a suppression, inhibited the proliferation of invasion in HFLS-RA. This was probably a result of suppressed pSTAT-1, IL-6 and TNF-α expression and enhanced IL-10 expression.
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Affiliation(s)
- X Gang
- Department of Endocrinology and Metabolism, the First Hospital of Jilin University, Changchun, Jilin, China
| | - H Xu
- Departments of Ophthalmology, Changchun, Jilin, China
| | - L Si
- Gynaecology and Obstetrics, Changchun, Jilin, China
| | - X Zhu
- Orthopedics, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - T Yu
- Orthopedics, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Z Jiang
- Orthopedics, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Y Wang
- Orthopedics, the Second Hospital of Jilin University, Changchun, Jilin, China
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12
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Ma B, Yang Y, Li Z, Zhao D, Zhang W, Jiang Y, Xue D. Modular bioinformatics analysis demonstrates that a Toll‑like receptor signaling pathway is involved in the regulation of macrophage polarization. Mol Med Rep 2018; 18:4313-4320. [PMID: 30221738 PMCID: PMC6172368 DOI: 10.3892/mmr.2018.9486] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 08/24/2018] [Indexed: 12/23/2022] Open
Abstract
In recent years, an increasing number of studies on the roles of macrophages in tumors, immune responses and metabolism have been published, in which macrophage polarization has been an extensively discussed topic. In the present study, differentially expressed genes in various types of macrophages were analyzed using the Gene Expression Omnibus database. Cluster analysis of differentially expressed genes was conducted, and a protein-protein interaction (PPI) network was constructed. Finally, modular analysis and functional enrichment analysis revealed that a Toll-like receptor (TLR) signaling pathway is involved in the regulation of macrophage polarization. Furthermore, the high-degree proteins in the PPI network that are involved in the molecular regulation of macrophage polarization are closely associated with proteins of the TLR signaling pathway. These results suggested that the TLR signaling pathways may be a principal direction of future research on the regulation of macrophage polarization.
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Affiliation(s)
- Biao Ma
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yang Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Zhituo Li
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Dali Zhao
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Weihui Zhang
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yanfeng Jiang
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Dongbo Xue
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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13
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Seleznik GM, Reding T, Peter L, Gupta A, Steiner SG, Sonda S, Verbeke CS, Dejardin E, Khatkov I, Segerer S, Heikenwalder M, Graf R. Development of autoimmune pancreatitis is independent of CDKN1A/p21-mediated pancreatic inflammation. Gut 2018; 67:1663-1673. [PMID: 28774888 DOI: 10.1136/gutjnl-2016-313458] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 06/07/2017] [Accepted: 06/19/2017] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Chronic pancreatitis (CP) and autoimmune pancreatitis (AIP) are characterised by different inflammatory processes. If pancreatic inflammation is a prerequisite for autoimmunity is still unclear. AIP is considered mostly a T cell-mediated disease; however, in induction of CP, macrophages play a pivotal role. p21-a member of cyclin-dependent kinase inhibitors-can influence inflammatory processes, in particular can regulate T cell activation and promote macrophage development. We therefore examined the role of p21-mediated inflammation in AIP. DESIGN We intercrossed lymphotoxin (LT) overexpressing mice (Tg(Ela1-LTa,b))-a model to study AIP development-with p21-deficient mice. Furthermore, we characterised p21 expression in human AIP and non-AIP specimens. RESULTS p21 deficiency in LT mice (LTp21-/-) prevented early pancreatic injury and reduced inflammation. In acinar cells, diminished proliferation and abrogated activation of non-canonical nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) pathway was observed. In contrast, 12-month-old LT mice with and without p21 had similar inflammatory signatures and T-B cell infiltration. Interestingly, LT and LTp21-/- mice had comparable tertiary lymphoid organs (TLOs), autoantibodies and elevated IgG levels. However, acinar cell proliferation, acinar-to-ductal metaplasia and acinar non-canonical NF-κB pathway activation remained impaired in LTp21-/- pancreata. CONCLUSIONS Our findings indicate that p21 is crucial for pancreatic inflammation in LT-driven pancreatic injury. p21 is involved in early acinar secretion of inflammatory mediators that attract innate immune cells. However, p21 is not essential for humoral immune response, accountable for autoimmunity. Remarkably, p21 renders acinar cells less susceptible to proliferation and transdifferentiation. We therefore suggest that AIP can also develop independent of chronic inflammatory processes.
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Affiliation(s)
- Gitta M Seleznik
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Theresia Reding
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Lukas Peter
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Anurag Gupta
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Sabrina G Steiner
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Sabrina Sonda
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
| | - Caroline S Verbeke
- Department of Pathology, Institute of Clinical Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Emmanuel Dejardin
- Laboratory of Molecular Immunology and Signal Transduction, GIGA-Research, University of Liège, Liège, Belgium
| | - Igor Khatkov
- Department of Medicine and Dentistry, Moscow State University, Moscow, Russia
| | - Stephan Segerer
- Division of Nephrology, University Hospital, Zurich, Switzerland.,Division of Nephrology, Dialysis and Transplantation, Kantonsspital Aarau, Aarau, Switzerland
| | - Mathias Heikenwalder
- School of Medicine, Institute of Virology, TUM-Helmholtz Zentrum Munich, Munich, Germany.,Department of Chronic Inflammation and Cancer, German Cancer Center (DKFZ), Heidelberg, Germany
| | - Rolf Graf
- Department of Visceral and Transplantation Surgery, Swiss HPB Centre, University Hospital Zurich, Zurich, Switzerland
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14
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Rackov G, Shokri R, De Mon MÁ, Martínez-A C, Balomenos D. The Role of IFN-β during the Course of Sepsis Progression and Its Therapeutic Potential. Front Immunol 2017; 8:493. [PMID: 28533774 PMCID: PMC5420561 DOI: 10.3389/fimmu.2017.00493] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 04/10/2017] [Indexed: 12/17/2022] Open
Abstract
Sepsis is a complex biphasic syndrome characterized by both pro- and anti-inflammatory immune states. Whereas early sepsis mortality is caused by an acute, deleterious pro-inflammatory response, the second sepsis phase is governed by acute immunosuppression, which predisposes patients to long-term risk for life-threatening secondary infections. Despite extensive basic research and clinical trials, there is to date no specific therapy for sepsis, and mortality rates are on the rise. Although IFN-β is one of the most-studied cytokines, its diverse effects are not fully understood. Depending on the disease or type of infection, it can have beneficial or detrimental effects. As IFN-β has been used successfully to treat diverse diseases, emphasis has been placed on understanding the role of IFN-β in sepsis. Analyses of mouse models of septic shock attribute a pro-inflammatory role to IFN-β in sepsis development. As anti-inflammatory treatments in humans with antibodies to TNF-α or IL1-β resulted disappointing, cytokine modulation approaches were discouraged and neutralization of IFN-β has not been pursued for sepsis treatment. In the case of patients with delayed sepsis and immunosuppression, there is a debate as to whether the use of specific cytokines would restore the deactivated immune response. Recent reports show an association of low IFN-β levels with the hyporesponsive state of monocytes from sepsis patients and after endotoxin tolerance induction. These data, discussed here, project a role for IFN-β in restoring monocyte function and reversing immunosuppression, and suggest IFN-β-based additive immunomodulatory therapy. The dichotomy in putative therapeutic approaches, involving reduction or an increase in IFN-β levels, mirrors the contrasting nature of the early hyperinflammatory state and the delayed immunosuppression phase.
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Affiliation(s)
- Gorjana Rackov
- Department of Immunology and Oncology, Universidad Autónoma de Madrid, Centro Nacional de Biotecnología - CSIC, Madrid, Spain.,IMDEA Nanoscience, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rahman Shokri
- Department of Immunology and Oncology, Universidad Autónoma de Madrid, Centro Nacional de Biotecnología - CSIC, Madrid, Spain
| | - Melchor Álvarez De Mon
- Immune System Diseases-Rheumatology and Oncology Service, University Hospital Principe de Asturias, Alcalá de Henares, Spain
| | - Carlos Martínez-A
- Department of Immunology and Oncology, Universidad Autónoma de Madrid, Centro Nacional de Biotecnología - CSIC, Madrid, Spain
| | - Dimitrios Balomenos
- Department of Immunology and Oncology, Universidad Autónoma de Madrid, Centro Nacional de Biotecnología - CSIC, Madrid, Spain
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15
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Kihara S, Hayashi S, Hashimoto S, Kanzaki N, Takayama K, Matsumoto T, Chinzei N, Iwasa K, Haneda M, Takeuchi K, Nishida K, Kuroda R. Cyclin-Dependent Kinase Inhibitor-1-Deficient Mice are Susceptible to Osteoarthritis Associated with Enhanced Inflammation. J Bone Miner Res 2017; 32:991-1001. [PMID: 28128866 DOI: 10.1002/jbmr.3080] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 12/30/2016] [Accepted: 01/05/2017] [Indexed: 01/17/2023]
Abstract
Osteoarthritis (OA) is a multifactorial disease, and recent data suggested that cell cycle-related proteins play a role in OA pathology. Cyclin-dependent kinase (CDK) inhibitor 1 (p21) regulates activation of other CDKs, and recently, we reported that p21 deficiency induced susceptibility to OA induced by destabilization of the medial meniscus (DMM) surgery through STAT3-signaling activation. However, the mechanisms associated with why p21 deficiency led to susceptibility to OA by the STAT3 pathway remain unknown. Therefore, we focused on joint inflammation to determine the mechanisms associated with p21 function during in vitro and in vivo OA progression. p21-knockout (p21-/- ) mice were used to develop an in vivo OA model, and C57BL/6 (p21+/+ ) mice with the same background as the p21-/- mice were used as controls. Morphogenic changes were measured using micro-CT, IL-1β serum levels were detected by ELISA, and histological or immunohistological analyses were performed. Our results indicated that p21-deficient DMM-model mice exhibited significant subchondral bone destruction and cartilage degradation compared with wild-type mice. Immunohistochemistry results revealed p21-/- mice susceptibility to OA changes accompanied by macrophage infiltration and enhanced MMP-3 and MMP-13 expression through IL-1β-induced NF-κB signaling. p21-/- mice also showed subchondral bone destruction according to micro-CT analysis, and cathepsin K staining revealed increased numbers of osteoclasts. Furthermore, p21-/- mice displayed increased serum IL-1β levels, and isolated chondrocytes from p21-/- mice indicated elevated MMP-3 and MMP-13 expression with phosphorylation of IκB kinase complex in response to IL-1β stimulation, whereas treatment with a specific p-IκB kinase inhibitor attenuated MMP-3 and MMP-13 expression. Our results indicated that p21-deficient DMM mice were susceptible to alterations in OA phenotype, including enhanced osteoclast expression, macrophage infiltration, and MMP expression through IL-1β-induced NF-κB signaling, suggesting that p21 regulation may constitute a possible therapeutic strategy for OA treatment. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Shinsuke Kihara
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Shinya Hayashi
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Shingo Hashimoto
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Noriyuki Kanzaki
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Koji Takayama
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Nobuaki Chinzei
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kenjiro Iwasa
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Masahiko Haneda
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kazuhiro Takeuchi
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kotaro Nishida
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Ryosuke Kuroda
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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Balomenos D, Shokri R, Daszkiewicz L, Vázquez-Mateo C, Martínez-A C. On How Fas Apoptosis-Independent Pathways Drive T Cell Hyperproliferation and Lymphadenopathy in lpr Mice. Front Immunol 2017; 8:237. [PMID: 28344578 PMCID: PMC5344898 DOI: 10.3389/fimmu.2017.00237] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 02/20/2017] [Indexed: 01/20/2023] Open
Abstract
Fas induces massive apoptosis in T cells after repeated in vitro T cell receptor (TCR) stimulation and is critical for lymphocyte homeostasis in Fas-deficient (lpr) mice. Although the in vitro Fas apoptotic mechanism has been defined, there is a large conceptual gap between this in vitro phenomenon and the pathway that leads to in vivo development of lymphadenopathy and autoimmunity. A striking abnormality in lpr mice is the excessive proliferation of CD4+ and CD8+ T cells, and more so of the double-negative TCR+CD4−CD8−B220+ T cells. The basis of lpr T cell hyperproliferation remains elusive, as it cannot be explained by Fas-deficient apoptosis. T cell-directed p21 overexpression reduces hyperactivation/hyperproliferation of all lpr T cell subtypes and lymphadenopathy in lpr mice. p21 controls expansion of repeatedly stimulated T cells without affecting apoptosis. These results confirm a direct link between hyperactivation/hyperproliferation, autoreactivity, and lymphadenopathy in lpr mice and, with earlier studies, suggest that Fas apoptosis-independent pathways control lpr T cell hyperproliferation. lpr T cell hyperproliferation could be an indirect result of the defective apoptosis of repeatedly stimulated lpr T cells. Nonetheless, in this perspective, we argue for an alternative setting, in which lack of Fas would directly cause lpr T cell hyperactivation/hyperproliferation in vivo. We propose that Fas/Fas ligand (FasL) acts as an activation inhibitor of recurrently stimulated T cells, and that its disruption causes overexpansion of T cells in lpr mice. Research to define the underlying mechanism of this Fas/FasL effect could resolve the phenotype of lpr mice and lead to therapeutics for related human syndromes.
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Affiliation(s)
- Dimitrios Balomenos
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), UAM Campus de Cantoblanco , Madrid , Spain
| | - Rahman Shokri
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), UAM Campus de Cantoblanco , Madrid , Spain
| | - Lidia Daszkiewicz
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), UAM Campus de Cantoblanco , Madrid , Spain
| | - Cristina Vázquez-Mateo
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), UAM Campus de Cantoblanco , Madrid , Spain
| | - Carlos Martínez-A
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), UAM Campus de Cantoblanco , Madrid , Spain
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17
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Rackov G, Hernández-Jiménez E, Shokri R, Carmona-Rodríguez L, Mañes S, Álvarez-Mon M, López-Collazo E, Martínez-A C, Balomenos D. p21 mediates macrophage reprogramming through regulation of p50-p50 NF-κB and IFN-β. J Clin Invest 2016; 126:3089-103. [PMID: 27427981 DOI: 10.1172/jci83404] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 05/24/2016] [Indexed: 01/01/2023] Open
Abstract
M1 and M2 macrophage phenotypes, which mediate proinflammatory and antiinflammatory functions, respectively, represent the extremes of immunoregulatory plasticity in the macrophage population. This plasticity can also result in intermediate macrophage states that support a balance between these opposing functions. In sepsis, M1 macrophages can compensate for hyperinflammation by acquiring an M2-like immunosuppressed status that increases the risk of secondary infection and death. The M1 to M2 macrophage reprogramming that develops during LPS tolerance resembles the pathological antiinflammatory response to sepsis. Here, we determined that p21 regulates macrophage reprogramming by shifting the balance between active p65-p50 and inhibitory p50-p50 NF-κB pathways. p21 deficiency reduced the DNA-binding affinity of the p50-p50 homodimer in LPS-primed and -rechallenged macrophages, impairing their ability to attenuate IFN-β production and acquire an M2-like hyporesponsive status. High p21 levels in sepsis patients correlated with low IFN-β expression, and p21 knockdown in human monocytes corroborated its role in IFN-β regulation. The data demonstrate that p21 adjusts the equilibrium between p65-p50 and p50-p50 NF-κB pathways to mediate macrophage plasticity in LPS tolerance. Identifying p21-related pathways involved in monocyte reprogramming may lead to potential targets for sepsis treatment.
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18
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Archer AM, Saber R, Rose S, Shaffer A, Misharin AV, Tsai F, Haines Iii GK, Dominguez S, Eren M, Vaughan DE, Cuda CM, Perlman H. ApoE deficiency exacerbates the development and sustainment of a semi-chronic K/BxN serum transfer-induced arthritis model. J Transl Med 2016; 14:170. [PMID: 27287704 PMCID: PMC4901400 DOI: 10.1186/s12967-016-0912-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 05/16/2016] [Indexed: 02/01/2023] Open
Abstract
Background The risk for developing cardiovascular disease is greater in patients with rheumatoid arthritis (RA) than in the general population. While patients with RA also have dyslipidemia, the impact of dyslipidemia on the severity of inflammatory arthritis and associated cardiovascular disease is unclear. Currently, there are conflicting results regarding arthritis incidence in apolipoprotein E (ApoE) deficient mice, which spontaneously exhibit both hyperlipidemia and atherosclerosis. Here, we utilize a distinct approach to investigate the contribution of a hyperlipidemic environment on the development of arthritis and atherosclerosis in mice lacking ApoE. Methods K/BxN serum transfer-induced arthritis (STIA) was assessed in C57BL/6 (control) and ApoE−/− mice using clinical indices and immunohistochemical staining. Ankle synoviums were processed for flow cytometry. Aortic atherosclerosis was quantitated using Sudan IV staining. Serum cholesterol and cytokine levels were determined via enzymatic and luminex bead-based assays, respectively. Results ApoE−/− mice developed a sustained and enhanced semi-chronic inflammatory arthritis as compared to control mice. ApoE−/− mice had increased numbers of foamy macrophages, enhanced joint inflammation and amplified collagen deposition versus controls. The presence of arthritis did not exacerbate serum cholesterol levels or significantly augment the level of atherosclerosis in ApoE−/− mice. However, arthritic ApoE−/− mice exhibited a marked elevation of IL-6 as compared to non-arthritic ApoE−/− mice and arthritic C57BL/6 mice. Conclusions Loss of ApoE potentiates a semi-chronic inflammatory arthritis. This heightened inflammatory response was associated with an increase in circulating IL-6 and in the number of foamy macrophages within the joint. Moreover, the foamy macrophages within the arthritic joint are reminiscent of those within unstable atherosclerotic lesions and suggest a pathologic role for foamy macrophages in propagating arthritis. Electronic supplementary material The online version of this article (doi:10.1186/s12967-016-0912-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Amy M Archer
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA
| | - Rana Saber
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA
| | - Shawn Rose
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA.,Immunoscience Exploratory Clinical and Translational Research, Bristol-Myers Squibb, Lawrenceville, NJ, USA
| | - Alexander Shaffer
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA
| | - Alexander V Misharin
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA.,Division of Pulmonary and Critical Care, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - FuNien Tsai
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA
| | | | - Salina Dominguez
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA
| | - Mesut Eren
- Division of Cardiology, Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Douglas E Vaughan
- Division of Cardiology, Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Carla M Cuda
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA.
| | - Harris Perlman
- Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, 240 East Huron Street, McGaw M338, Chicago, IL, 60611, USA.
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19
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Fullerton JN, Gilroy DW. Resolution of inflammation: a new therapeutic frontier. Nat Rev Drug Discov 2016; 15:551-67. [PMID: 27020098 DOI: 10.1038/nrd.2016.39] [Citation(s) in RCA: 565] [Impact Index Per Article: 70.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Dysregulated inflammation is a central pathological process in diverse disease states. Traditionally, therapeutic approaches have sought to modulate the pro- or anti-inflammatory limbs of inflammation, with mixed success. However, insight into the pathways by which inflammation is resolved has highlighted novel opportunities to pharmacologically manipulate these processes - a strategy that might represent a complementary (and perhaps even superior) therapeutic approach. This Review discusses the state of the art in the biology of resolution of inflammation, highlighting the opportunities and challenges for translational research in this field.
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Affiliation(s)
- James N Fullerton
- Centre for Clinical Pharmacology and Therapeutics, Division of Medicine, 5 University Street, University College London, London WC1E 6JJ, UK
| | - Derek W Gilroy
- Centre for Clinical Pharmacology and Therapeutics, Division of Medicine, 5 University Street, University College London, London WC1E 6JJ, UK
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20
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Schmitz ML, Kracht M. Cyclin-Dependent Kinases as Coregulators of Inflammatory Gene Expression. Trends Pharmacol Sci 2015; 37:101-113. [PMID: 26719217 DOI: 10.1016/j.tips.2015.10.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/22/2015] [Accepted: 10/23/2015] [Indexed: 12/22/2022]
Abstract
Cyclin-dependent kinases (CDKs) exert a variety of functions through regulation of the cell cycle and gene expression, thus implicating them in diverse biological processes. Recent studies have deciphered the molecular mechanisms employed by nuclear CDKs to support the expression of inflammatory mediators. Induced transcription of many proinflammatory genes is increased during the G1 phase of the cell cycle in a CDK-dependent manner. This process involves the cytokine-induced recruitment of CDK6 to the nuclear chromatin fraction where it associates with transcription factors of the NF-κB, STAT, and AP-1 families. The ability of CDK6 to trigger the expression of VEGF-A and p16(INK4A) and to recruit the NF-κB subunit p65 to its target sites is largely independent of its kinase function. The involvement of CDKs in proinflammatory gene expression also allows therapeutic targeting of their functions to interfere with tumor-promoting inflammation or chronic inflammatory diseases.
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Affiliation(s)
- M Lienhard Schmitz
- Institute of Biochemistry, Medical Faculty, Friedrichstrasse 24, Justus-Liebig-University, 35392 Giessen, Germany.
| | - Michael Kracht
- Rudolf-Buchheim-Institute for Pharmacology, Medical Faculty, Schubertstrasse 81, Justus-Liebig-University Giessen, 35392 Giessen, Germany.
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21
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Hayashi S, Fujishiro T, Hashimoto S, Kanzaki N, Chinzei N, Kihara S, Takayama K, Matsumoto T, Nishida K, Kurosaka M, Kuroda R. p21 deficiency is susceptible to osteoarthritis through STAT3 phosphorylation. Arthritis Res Ther 2015; 17:314. [PMID: 26546411 PMCID: PMC4636813 DOI: 10.1186/s13075-015-0828-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 10/20/2015] [Indexed: 12/18/2022] Open
Abstract
Introduction Osteoarthritis (OA) is a multifactorial disease, and recent studies have suggested that cell cycle–related proteins play a role in OA pathology. p21 was initially identified as a potent inhibitor of cell cycle progression. However, it has been proposed that p21 is a regulator of transcription factor activity. In this study, we evaluated the role of p21 in response to biomechanical stress. Methods Human chondrocytes were treated with p21-specific small interfering RNA (siRNA), and cyclic tensile strain was introduced in the presence or absence of a signal transducer and activator of transcription 3 (STAT3)-specific inhibitor. Further, we developed an in vivo OA model in a p21-knockout background for in vivo experiments. Results The expression of matrix metalloproteinase (MMP13) mRNA increased in response to cyclic tensile strain following transfection with p21 siRNA, whereas the expression of aggrecan was decreased. Phospho-STAT3 and MMP-13 protein levels increased following downregulation of p21, and this was reversed by treatment with a STAT3 inhibitor. p21-deficient mice were susceptible to OA, and this was associated with increased STAT3 phosphorylation, elevated MMP-13 expression, and elevation of synovial inflammation. The expression of p21 mRNA was decreased and phosphorylation of STAT3 was elevated in human OA chondrocytes. Conclusions The lack of p21 has catabolic effects by regulation of aggrecan and MMP-13 expression through STAT3 phosphorylation in the cartilage tissue. p21 may function as a regulator of transcriptional factors other than the inhibitor of cell cycle progression in the cartilage tissue. Thus, the regulation of p21 may be a therapeutic strategy for the treatment of OA. Electronic supplementary material The online version of this article (doi:10.1186/s13075-015-0828-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Takaaki Fujishiro
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Shingo Hashimoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Noriyuki Kanzaki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Nobuaki Chinzei
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Shinsuke Kihara
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Koji Takayama
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Kotaro Nishida
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Masahiro Kurosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
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22
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Chinzei N, Hayashi S, Ueha T, Fujishiro T, Kanzaki N, Hashimoto S, Sakata S, Kihara S, Haneda M, Sakai Y, Kuroda R, Kurosaka M. P21 deficiency delays regeneration of skeletal muscular tissue. PLoS One 2015; 10:e0125765. [PMID: 25942471 PMCID: PMC4420284 DOI: 10.1371/journal.pone.0125765] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/26/2015] [Indexed: 11/21/2022] Open
Abstract
The potential relationship between cell cycle checkpoint control and tissue regeneration has been indicated. Despite considerable research being focused on the relationship between p21 and myogenesis, p21 function in skeletal muscle regeneration remains unclear. To clarify this, muscle injury model was recreated by intramuscular injection of bupivacaine hydrochloride in the soleus of p21 knockout (KO) mice and wild type (WT) mice. The mice were sacrificed at 3, 14, and 28 days post-operation. The results of hematoxylin-eosin staining and immunofluorescence of muscle membrane indicated that muscle regeneration was delayed in p21 KO mice. Cyclin D1 mRNA expression and both Ki-67 and PCNA immunohistochemistry suggested that p21 deficiency increased cell cycle and muscle cell proliferation. F4/80 immunohistochemistry also suggested the increase of immune response in p21 KO mice. On the other hand, both the mRNA expression and western blot analysis of MyoD, myogenin, and Pax7 indicated that muscular differentiation was delayed in p21KO mice. Considering these results, we confirmed that muscle injury causes an increase in cell proliferation. However, muscle differentiation in p21 KO mice was inhibited due to the low expression of muscular synthesis genes, leading to a delay in the muscular regeneration. Thus, we conclude that p21 plays an important role in the in vivo healing process in muscular injury.
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Affiliation(s)
- Nobuaki Chinzei
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinya Hayashi
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takeshi Ueha
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takaaki Fujishiro
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Noriyuki Kanzaki
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shingo Hashimoto
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shuhei Sakata
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinsuke Kihara
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masahiko Haneda
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masahiro Kurosaka
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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23
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Daszkiewicz L, Vázquez-Mateo C, Rackov G, Ballesteros-Tato A, Weber K, Madrigal-Avilés A, Di Pilato M, Fotedar A, Fotedar R, Flores JM, Esteban M, Martínez-A C, Balomenos D. Distinct p21 requirements for regulating normal and self-reactive T cells through IFN-γ production. Sci Rep 2015; 5:7691. [PMID: 25573673 PMCID: PMC4287747 DOI: 10.1038/srep07691] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 12/01/2014] [Indexed: 12/30/2022] Open
Abstract
Self/non-self discrimination characterizes immunity and allows responses against pathogens but not self-antigens. Understanding the principles that govern this process is essential for designing autoimmunity treatments. p21 is thought to attenuate autoreactivity by limiting T cell expansion. Here, we provide direct evidence for a p21 role in controlling autoimmune T cell autoreactivity without affecting normal T cell responses. We studied C57BL/6, C57BL/6/lpr and MRL/lpr mice overexpressing p21 in T cells, and showed reduced autoreactivity and lymphadenopathy in C57BL/6/lpr, and reduced mortality in MRL/lpr mice. p21 inhibited effector/memory CD4(+) CD8(+) and CD4(-)CD8(-) lpr T cell accumulation without altering defective lpr apoptosis. This was mediated by a previously non-described p21 function in limiting T cell overactivation and overproduction of IFN-γ, a key lupus cytokine. p21 did not affect normal T cell responses, revealing differential p21 requirements for autoreactive and normal T cell activity regulation. The underlying concept of these findings suggests potential treatments for lupus and autoimmune lymphoproliferative syndrome, without compromising normal immunity.
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Affiliation(s)
- Lidia Daszkiewicz
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Cristina Vázquez-Mateo
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Gorjana Rackov
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - André Ballesteros-Tato
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Kathrin Weber
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Adrián Madrigal-Avilés
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Mauro Di Pilato
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Arun Fotedar
- Cancer Cell Biology Program, Sidney Kimmel Cancer Center, San Diego, CA, USA
| | - Rati Fotedar
- Sanford-Burnham Medical Research Institute, San Diego, CA, USA
| | - Juana M Flores
- Animal Biology Department, School of Veterinary Medicine, Universidad Complutense, Madrid, Spain
| | - Mariano Esteban
- Department of Cellular and Molecular Biology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Carlos Martínez-A
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Dimitrios Balomenos
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, UAM Campus de Cantoblanco, E-28049 Madrid, Spain
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24
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Rose S, Waters EA, Haney CR, Meade CTJ, Perlman H. High-resolution magnetic resonance imaging of ankle joints in murine arthritis discriminates inflammation and bone destruction in a quantifiable manner. ACTA ACUST UNITED AC 2013; 65:2279-89. [PMID: 23740612 DOI: 10.1002/art.38030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 05/16/2013] [Indexed: 01/03/2023]
Abstract
OBJECTIVE The ability to noninvasively monitor the development of inflammatory arthritis longitudinally has become increasingly important in experimental rheumatology. Magnetic resonance imaging (MRI) allows for detailed examination of anatomic structures, as well as the assessment of joint and soft tissue inflammation. The aim of this study was to extend the use of MRI to include quantitative measurements of bone destruction in murine ankle joints. METHODS Joint disease was measured serially using clinical, histologic, in vivo imaging system (IVIS), micro-computed tomography (micro-CT), and MRI techniques in mouse ankle joints, using the K/BxN serum transfer-induced acute arthritis and K/BxA(g7) chronic arthritis models. Ankle joint MRI was performed using a gradient-echo pulse sequence to evaluate bone destruction and a spin-echo sequence to evaluate inflammation (long T2 signal). RESULTS Arthritic mice, as compared to control mice, demonstrated increased disease severity according to clinical, histologic, IVIS, and MRI measures. Following induction of arthritis, the majority of volume expansion of the long T2 signal occurred in a juxtaarticular, rather than intrarticular, manner within the ankle joints. Bone destruction in K/BxA(g7) mouse ankle joints was readily detectible by MRI. Linear regression analyses demonstrated significant correlations between the clinical score and joint radiance intensity assessed by IVIS, between the ankle joint width and increased long T2 signal on MRI, and between the bone volume obtained by micro-CT and bone volume obtained by MRI. CONCLUSION MRI is an optimal technology for anatomic localization of articular and soft tissue changes during the development and progression of inflammatory arthritis. Future studies may combine MRI with in vivo labeling agents to investigate joint disease in a cell type-specific manner.
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Affiliation(s)
- Shawn Rose
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
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25
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Julovi SM, Shen K, Mckelvey K, Minhas N, March L, Jackson CJ. Activated protein C inhibits proliferation and tumor necrosis factor α-stimulated activation of p38, c-Jun NH2-terminal kinase (JNK) and Akt in rheumatoid synovial fibroblasts. Mol Med 2013; 19:324-31. [PMID: 24096826 DOI: 10.2119/molmed.2013.00034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Accepted: 09/19/2013] [Indexed: 11/06/2022] Open
Abstract
Synovial fibroblast proliferation is a hallmark of the invasive pannus in the rheumatoid joint. Activated protein C (APC) is a natural anticoagulant that exerts antiinflammatory and cyto-protective effects in various diseases via endothelial protein C receptor (EPCR) and proteinase-activated receptor (PAR)-mediated pathways. In this study, we investigated the effect and the underlying cellular signaling mechanisms of APC on proliferation of human rheumatoid synovial fibroblasts (RSFs). We found that APC stimulated proliferation of mouse dermal fibroblasts (MDFs) and normal human dermal fibroblasts (HDFs) by up to 60%, but robustly downregulated proliferation of RSFs. APC induced the phosphorylation of extracellular signal-regulated protein kinase (ERK) and enhanced expression of p21 and p27 in a dose-dependent manner in RSFs. The latter effect was inhibited by pre-treatment with the ERK inhibitors PD98059 and U0126 but not by p38 inhibitor SB203580. In addition, APC significantly downregulated tumor necrosis factor (TNF)α-stimulated cell proliferation and activation of p38, c-Jun NH2-terminal kinase (JNK) and Akt in RSFs. These results provide the first evidence that APC selectively inhibits proliferation and the inflammatory signaling pathways of RSFs. Thus, APC may reduce synovial hyperplasia and pannus invasion in rheumatoid arthritis.
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Affiliation(s)
- Sohel M Julovi
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia.,Department of Surgery, Kolling Institute of Medical Research, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Kaitlin Shen
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Kelly Mckelvey
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Nikita Minhas
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Lyn March
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Christopher J Jackson
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
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26
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Qiu Q, Zheng Z, Chang L, Zhao YS, Tan C, Dandekar A, Zhang Z, Lin Z, Gui M, Li X, Zhang T, Kong Q, Li H, Chen S, Chen A, Kaufman RJ, Yang WL, Lin HK, Zhang D, Perlman H, Thorp E, Zhang K, Fang D. Toll-like receptor-mediated IRE1α activation as a therapeutic target for inflammatory arthritis. EMBO J 2013; 32:2477-90. [PMID: 23942232 DOI: 10.1038/emboj.2013.183] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 07/15/2013] [Indexed: 01/27/2023] Open
Abstract
In rheumatoid arthritis (RA), macrophage is one of the major sources of inflammatory mediators. Macrophages produce inflammatory cytokines through toll-like receptor (TLR)-mediated signalling during RA. Herein, we studied macrophages from the synovial fluid of RA patients and observed a significant increase in activation of inositol-requiring enzyme 1α (IRE1α), a primary unfolded protein response (UPR) transducer. Myeloid-specific deletion of the IRE1α gene protected mice from inflammatory arthritis, and treatment with the IRE1α-specific inhibitor 4U8C attenuated joint inflammation in mice. IRE1α was required for optimal production of pro-inflammatory cytokines as evidenced by impaired TLR-induced cytokine production in IRE1α-null macrophages and neutrophils. Further analyses demonstrated that tumour necrosis factor (TNF) receptor-associated factor 6 (TRAF6) plays a key role in TLR-mediated IRE1α activation by catalysing IRE1α ubiquitination and blocking the recruitment of protein phosphatase 2A (PP2A), a phosphatase that inhibits IRE1α phosphorylation. In summary, we discovered a novel regulatory axis through TRAF6-mediated IRE1α ubiquitination in regulating TLR-induced IRE1α activation in pro-inflammatory cytokine production, and demonstrated that IRE1α is a potential therapeutic target for inflammatory arthritis.
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Affiliation(s)
- Quan Qiu
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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27
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Graepel R, Leung G, Wang A, Villemaire M, Jirik FR, Sharkey KA, McDougall JJ, McKay DM. Murine autoimmune arthritis is exaggerated by infection with the rat tapeworm, Hymenolepis diminuta. Int J Parasitol 2013; 43:593-601. [PMID: 23583716 DOI: 10.1016/j.ijpara.2013.02.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Revised: 02/15/2013] [Accepted: 02/19/2013] [Indexed: 01/21/2023]
Abstract
Infection with helminth parasites triggers strong and stereotypic immune responses in humans and mice, which can protect against specific experimentally-induced autoimmune diseases. We have shown that infection with the rat tapeworm, Hymenolepis diminuta, confers a protective effect on FCA-induced joint inflammation. Here, we investigated the effect of a prophylactic infection with H. diminuta on the K/BxN-serum model of polyarthritis in BALB/c mice. Mice were infected with 10 cysticercoids of H. diminuta by oral gavage and 8 days later arthritis was induced by i.p. injection of K/BxN arthritogenic serum. Joint swelling and pain measurements were recorded throughout a 13 day time course. At necropsy, joints and blood serum were collected. K/BxN-treated mice developed joint inflammation in the front paws, hind paws and knees as shown by increased swelling, mechanical allodynia and myeloperoxidase activity. Mice infected with H. diminuta had more severe disease, with increased eosinophil peroxidase activity in their paws and greater inflammatory infiltrate and synovitis in the knee joints. Hymenolepis diminuta-infected mice displayed significant increases in serum levels of C5a and mast cell protease-1 compared with K/BxN-serum only treatment, the latter being indicative of mast cell activation. In contrast to the protective effect of infection with H. diminuta in FCA-induced monoarthritis, infection with this helminth exacerbated K/BxN serum-induced polyarthritis in BALB/c mice. This correlated with increases in C5a and mast cell activation: factors critical in the development of K/BxN-induced arthritis. Thus, while data accumulate from animal models showing that infection with helminth parasites may be beneficial for a variety of auto-inflammatory diseases, our findings demonstrate the potential for helminths to exacerbate disease. Hence care is needed when helminth therapy is translated into a clinical setting.
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Affiliation(s)
- Rabea Graepel
- Gastrointestinal Research Group, Department of Physiology & Pharmacology, The Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
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Lawlor KE, van Nieuwenhuijze A, Parker KL, Drake SF, Campbell IK, Smith SD, Vince JE, Strasser A, Wicks IP. Bcl-2 overexpression ameliorates immune complex-mediated arthritis by altering FcγRIIb expression and monocyte homeostasis. J Leukoc Biol 2013; 93:585-97. [PMID: 23341540 DOI: 10.1189/jlb.0412190] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
RA is a chronic autoimmune disease characterized by accumulation of inflammatory cells within synovial joints. RA is associated with a failure of apoptosis of infiltrating leukocytes, thought to be a result of overexpression of prosurvival Bcl-2 proteins. Overexpression of Bcl-2 in hematopoietic cells can result in spontaneous autoimmunity. We therefore hypothesized that increased Bcl-2 in the hematopoietic compartment would reduce apoptosis and thereby, exacerbate inflammatory arthritis. Paradoxically, we found that overexpression of Bcl-2 in mice (vav-bcl-2) markedly reduced pathology in antibody-dependent models of RA (CIA and K/BxN serum transfer arthritis). No such protection was observed in a model of CD4(+) T cell-dependent, B cell-independent arthritis (mBSA/IL-1-induced arthritis). In CIA, vav-bcl-2 Tg mice had lower antibody production to CII, which might explain reduced disease. However, Bcl-2 overexpression also reduced passive K/BxN serum transfer arthritis. Overexpression of Bcl-2 caused a monocytosis, with preferential expansion of Ly6C(lo) monocytes and increased expression of the inhibitory receptor for IgG, FcγRIIb, on leukocytes. Skewing of the myeloid cell population, increases in FcγRIIb, and reduced arthritis were independent of the hypergammaglobulinemia found in vav-bcl-2 Tg mice. These data reveal selective effects of the Bcl-2-regulated apoptotic pathway on monocyte differentiation and the expression of FcRs critical for regulation of antibody/immune complex-mediated disease.
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Affiliation(s)
- Kate E Lawlor
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
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Huang QQ, Koessler RE, Birkett R, Dorfleutner A, Perlman H, Haines GK, Stehlik C, Nicchitta CV, Pope RM. Glycoprotein 96 perpetuates the persistent inflammation of rheumatoid arthritis. ACTA ACUST UNITED AC 2013; 64:3638-48. [PMID: 22777994 DOI: 10.1002/art.34610] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE The mechanisms that contribute to the persistent activation of macrophages in rheumatoid arthritis (RA) are incompletely understood. The aim of this study was to determine the contribution of endogenous gp96 in Toll-like receptor (TLR)-mediated macrophage activation in RA. METHODS RA synovial fluid was used to activate macrophages and HEK-TLR-2 and HEK-TLR-4 cells. Neutralizing antibodies to TLR-2, TLR-4, and gp96 were used to inhibit activation. RA synovial fluid macrophages were isolated by CD14 negative selection. Cell activation was measured by the expression of tumor necrosis factor α (TNFα) or interleukin-8 messenger RNA. Arthritis was induced in mice by K/BxN serum transfer. The expression of gp96 was determined by immunoblot analysis, enzyme-linked immunosorbent assay, and immunohistochemistry. Arthritis was treated with neutralizing anti-gp96 antiserum or control serum. RESULTS RA synovial fluid induced the activation of macrophages and HEK-TLR-2 and HEK-TLR-4 cells. RA synovial fluid-induced macrophage and HEK-TLR-2 activation was suppressed by neutralizing anti-gp96 antibodies only in the presence of high (>800 ng/ml) rather than low (<400 ng/ml) concentrations of gp96. Neutralization of RA synovial fluid macrophage cell surface gp96 inhibited the constitutive expression of TNFα. Supporting the role of gp96 in RA, joint tissue gp96 expression was induced in mice with the K/BxN serum-induced arthritis, and neutralizing antibodies to gp96 ameliorated joint inflammation, as determined by clinical and histologic examination. CONCLUSION These observations support the notion that gp96 plays a role as an endogenous TLR-2 ligand in RA and identify the TLR-2 pathway as a therapeutic target.
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Affiliation(s)
- Qi-Quan Huang
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Saito T, Nishida K, Furumatsu T, Yoshida A, Ozawa M, Ozaki T. Histone deacetylase inhibitors suppress mechanical stress-induced expression of RUNX-2 and ADAMTS-5 through the inhibition of the MAPK signaling pathway in cultured human chondrocytes. Osteoarthritis Cartilage 2013; 21:165-74. [PMID: 23017871 DOI: 10.1016/j.joca.2012.09.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 07/18/2012] [Accepted: 09/19/2012] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the inhibitory effects and the regulatory mechanisms of histone deacetylase (HDAC) inhibitors on mechanical stress-induced gene expression of runt-related transcription factor (RUNX)-2 and adisintegrin and metalloproteinase with thrombospondin motif (ADAMTS)-5 in human chondrocytes. METHODS Human chondrocytes were seeded in stretch chambers at a concentration of 5 × 10(4)cells/chamber. Cells were pre-incubated with or without HDAC inhibitors (MS-275 or trichostatin A; TSA) for 12h, followed by uniaxial cyclic tensile strain (CTS) (0.5Hz, 10% elongation), which was applied for 30 min using the ST-140-10 system (STREX, Osaka, Japan). Total RNA was extracted and the expression of RUNX-2, ADAMTS-5, matrix metalloproteinase (MMP)-3, and MMP-13 at the mRNA and protein levels were examined by real-time polymerase chain reaction (PCR) and immunocytochemistry, respectively. The activation of diverse mitogen-activated protein kinase (MAPK) pathways with or without HDAC inhibitors during CTS was examined by western blotting. RESULTS HDAC inhibitors (TSA: 10 nM, MS-275: 100 nM) suppressed CTS-induced expression of RUNX-2, ADAMTS-5, and MMP-3 at both the mRNA and protein levels within 1h. CTS-induced activation of p38 MAPK (p38), extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK) MAPKs was downregulated by both HDAC inhibitors. CONCLUSION The CTS-induced expression of RUNX-2 and ADAMTS-5 was suppressed by HDAC inhibitors via the inhibition of the MAPK pathway activation in human chondrocytes. The results of the current study suggested a novel therapeutic role for HDAC inhibitors against degenerative joint disease such as osteoarthritis.
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Affiliation(s)
- T Saito
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Density and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama City, Okayama 700-8558, Japan
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Misharin AV, Haines GK, Rose S, Gierut AK, Hotchkiss RS, Perlman H. Development of a new humanized mouse model to study acute inflammatory arthritis. J Transl Med 2012; 10:190. [PMID: 22974474 PMCID: PMC3480927 DOI: 10.1186/1479-5876-10-190] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 09/10/2012] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Substantial advances have been generated in understanding the pathogenesis of rheumatoid arthritis (RA). Current murine models of RA-like disease have provided great insights into the molecular mechanism of inflammatory arthritis due to the use of genetically deficient or transgenic mice. However, these studies are limited by differences that exist between human and murine immune systems. Thus, the development of an animal model that utilizes human immune cells, will afford the opportunity to study their function in the initiation and propagation of inflammatory arthritis. METHODS One to two-day old irradiated NOD-scid IL2rγ(null) (NSG) mice were reconstituted with human CD34+ cord blood stem cells. Leukocytes were analyzed by flow cytometry and circulating antibodies were determined by ELISA. Arthritis was induced by injecting complete Freund's adjuvant into knee or ankle joints. Mice were also treated with the TNF inhibitor, Etanercept, or PBS and joints were analyzed histologically. RESULTS Humanized mice were established with high reconstitution rates and were able to spontaneously produce human immunoglobulins as well as specific IgG in response to immunization. Intraperitoneal injection of thioglycolate or injection of complete Freund's adjuvant into joints resulted in migration of human immune cells to the injected sites. Arthritic humanized mice treated with Etanercept had markedly less inflammation, which was associated with decreased total numbers of human CD45+ cells, including human lymphocytes and neutrophils. CONCLUSIONS The humanized mouse model is a new model to study inflammatory arthritis disease using human leukocytes without rejection of engrafted tissue. Future studies may adapt this system to incorporate RA patient cord blood and develop a chimeric animal model of inflammatory arthritis using genetically predisposed immune cells.
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Affiliation(s)
- Alexander V Misharin
- Department of Medicine/Rheumatology, Northwestern University, Feinberg School of Medicine, 240 East Huron Street, Room Chicago, IL 60611, USA
| | - G Kenneth Haines
- Department of Pathology, Yale University, School of Medicine, New Haven, CT 06510, USA
| | - Shawn Rose
- Department of Medicine/Rheumatology, Northwestern University, Feinberg School of Medicine, 240 East Huron Street, Room Chicago, IL 60611, USA
| | - Angelical K Gierut
- Department of Medicine/Rheumatology, Northwestern University, Feinberg School of Medicine, 240 East Huron Street, Room Chicago, IL 60611, USA
| | - Richard S Hotchkiss
- Department of Anesthesiology, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Harris Perlman
- Department of Medicine/Rheumatology, Northwestern University, Feinberg School of Medicine, 240 East Huron Street, Room Chicago, IL 60611, USA
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