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Huang Q, Chen T, Li J, Wang Y, Shi H, Yu Y, Ji Q, Shen X, Sun T, Shi H, Luo X, Jin B, You Y, Wu B. IL-37 ameliorates myocardial fibrosis by regulating mtDNA-enriched vesicle release in diabetic cardiomyopathy mice. J Transl Med 2024; 22:494. [PMID: 38790051 PMCID: PMC11127460 DOI: 10.1186/s12967-024-05250-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/29/2024] [Indexed: 05/26/2024] Open
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM), a serious complication of diabetes, leads to structural and functional abnormalities of the heart and ultimately evolves to heart failure. IL-37 exerts a substantial influence on the regulation of inflammation and metabolism. Whether IL-37 is involved in DCM is unknown. METHODS The plasma samples were collected from healthy controls, diabetic patients and DCM patients, and the level of IL-37 and its relationship with heart function were observed. The changes in cardiac function, myocardial fibrosis and mitochondrial injury in DCM mice with or without IL-37 intervention were investigated in vivo. By an in vitro co-culture approach involving HG challenge of cardiomyocytes and fibroblasts, the interaction carried out by cardiomyocytes on fibroblast profibrotic activation was studied. Finally, the possible interactive mediator between cardiomyocytes and fibroblasts was explored, and the intervention role of IL-37 and its relevant molecular mechanisms. RESULTS We showed that the level of plasma IL-37 in DCM patients was upregulated compared to that in healthy controls and diabetic patients. Both recombinant IL-37 administration or inducing IL-37 expression alleviated cardiac dysfunction and myocardial fibrosis in DCM mice. Mechanically, hyperglycemia impaired mitochondria through SIRT1/AMPK/PGC1α signaling, resulting in significant cardiomyocyte apoptosis and the release of extracellular vesicles containing mtDNA. Fibroblasts then engulfed these mtDNA-enriched vesicles, thereby activating TLR9 signaling and the cGAS-STING pathway to initiate pro-fibrotic process and adverse remodeling. However, the presence of IL-37 ameliorated mitochondrial injury by preserving the activity of SIRT1-AMPK-PGC1α axis, resulting in a reduction in release of mtDNA-enriched vesicle and ultimately attenuating the progression of DCM. CONCLUSIONS Collectively, our study demonstrates a protective role of IL-37 in DCM, offering a promising therapeutic agent for this disease.
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Affiliation(s)
- Qingyu Huang
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Tongqing Chen
- Department of Pharmacology & the Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, China
| | - Jian Li
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yiming Wang
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Huairui Shi
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yifei Yu
- Endocrinology department, Huashan Hospital, Fudan University, Shanghai, China
| | - Qingwei Ji
- Department of Cardiology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Xiaoyan Shen
- Department of Pharmacology & the Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, China
| | - Tao Sun
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Haiming Shi
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xinping Luo
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Bo Jin
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China.
| | - Yan You
- Department of Pharmacology & the Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, China.
| | - Bangwei Wu
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China.
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Li JM, Lin N, Zhang Y, Chen X, Liu Z, Lu R, Bian F, Liu H, Pflugfelder SC, Li DQ. Ectoine protects corneal epithelial survival and barrier from hyperosmotic stress by promoting anti-inflammatory cytokine IL-37. Ocul Surf 2024; 32:182-191. [PMID: 38490477 DOI: 10.1016/j.jtos.2024.03.002] [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: 10/23/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
PURPOSE To explore novel role and molecular mechanism of a natural osmoprotectant ectoine in protecting corneal epithelial cell survival and barrier from hyperosmotic stress. METHODS Primary human corneal epithelial cells (HCECs) were established from donor limbus. The confluent cultures in isosmolar medium were switched to hyperosmotic media (400-500 mOsM), with or without ectoine or rhIL-37 for different time periods. Cell viability and proliferation were evaluated by MTT or WST assay. The integrity of barrier proteins and the expression of cytokines and cathepsin S were evaluated by RT-qPCR, ELISA, and immunostaining with confocal microscopy. RESULTS HCECs survived well in 450mOsM but partially damaged in 500mOsM medium. Ectoine well protected HCEC survival and proliferation at 500mOsM. The integrity of epithelial barrier was significantly disrupted in HCECs exposed to 450mOsM, as shown by 2D and 3D confocal immunofluorescent images of tight junction proteins ZO-1 and occludin. Ectoine at 5-20 mM well protected these barrier proteins under hyperosmotic stress. The expression of TNF-α, IL-1β, IL-6 and IL-8 were dramatically stimulated by hyperosmolarity but significantly suppressed by Ectoine at 5-40 mM. Cathepsin S, which was stimulated by hyperosmolarity, directly disrupted epithelial barrier. Interestingly, anti-inflammatory cytokine IL-37 was suppressed by hyperosmolarity, but restored by ectoine at mRNA and protein levels. Furthermore, rhIL-37 suppressed cathepsin S and rescued cell survival and barrier in HCECs exposed to hyperosmolarity. CONCLUSION Our findings demonstrate that ectoine protects HCEC survival and barrier from hyperosmotic stress by promoting IL-37. This provides new insight into pathogenesis and therapeutic potential for dry eye disease.
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Affiliation(s)
- Jin-Miao Li
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Na Lin
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA; National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Yun Zhang
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA; National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Xin Chen
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA; National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China
| | - Zhao Liu
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Rong Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Fang Bian
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Haixia Liu
- Allergan, An AbbVie Company, Irvine, CA, 92612, USA
| | - Stephen C Pflugfelder
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - De-Quan Li
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA.
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Mei Y, Zhu Y, Yong KSM, Hanafi ZB, Gong H, Liu Y, Teo HY, Hussain M, Song Y, Chen Q, Liu H. IL-37 dampens immunosuppressive functions of MDSCs via metabolic reprogramming in the tumor microenvironment. Cell Rep 2024; 43:113835. [PMID: 38412100 DOI: 10.1016/j.celrep.2024.113835] [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: 05/30/2023] [Revised: 12/18/2023] [Accepted: 02/06/2024] [Indexed: 02/29/2024] Open
Abstract
Interleukin-37 (IL-37) has been shown to inhibit tumor growth in various cancer types. However, the immune regulatory function of IL-37 in the tumor microenvironment is unclear. Here, we established a human leukocyte antigen-I (HLA-I)-matched humanized patient-derived xenograft hepatocellular carcinoma (HCC) model and three murine orthotopic HCC models to study the function of IL-37 in the tumor microenvironment. We found that IL-37 inhibited HCC growth and promoted T cell activation. Further study revealed that IL-37 impaired the immunosuppressive capacity of myeloid-derived suppressor cells (MDSCs). Pretreatment of MDSCs with IL-37 before adoptive transfer attenuated their tumor-promoting function in HCC tumor-bearing mice. Moreover, IL-37 promoted both glycolysis and oxidative phosphorylation in MDSCs, resulting in the upregulation of ATP release, which impaired the immunosuppressive capacity of MDSCs. Collectively, we demonstrated that IL-37 inhibited tumor development through dampening MDSCs' immunosuppressive capacity in the tumor microenvironment via metabolic reprogramming, making it a promising target for future cancer immunotherapy.
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Affiliation(s)
- Yu Mei
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Ying Zhu
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Kylie Su Mei Yong
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (ASTAR), Singapore 138673, Singapore
| | - Zuhairah Binte Hanafi
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Huanle Gong
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Soochow University, Suzhou 215006, P.R. China
| | - Yonghao Liu
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Huey Yee Teo
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Muslima Hussain
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Yuan Song
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore
| | - Qingfeng Chen
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (ASTAR), Singapore 138673, Singapore.
| | - Haiyan Liu
- Immunology Program, Life Sciences Institute, Immunology Translational Research Program, and Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore.
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Bashi MA, Ad'hiah AH. Interleukin-37 gene expression is down-regulated in patients with acute myeloid leukemia and shown to be affected by CD14 and HLA-DR immunophenotypes. Cytokine 2023; 171:156368. [PMID: 37716188 DOI: 10.1016/j.cyto.2023.156368] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Recent evidence has indicated that interleukin 37 (IL-37) shows down-regulated expression in patients with acute myeloid leukemia (AML), but its association with immunophenotypic markers has not been explored. In the current study, IL37 mRNA expression was analyzed in the peripheral blood of 131 AML patients and 100 controls using the 2-ΔΔCt method (fold change), which was based on the principles of quantitative real-time polymerase chain reaction. AML patients were characterized in terms of gender, therapy, fms-like tyrosine kinase 3/internal tandem duplication (FLT3/ITD) and nucleophosmin 1 (NPM1) mutations, French-American-British classification (FAB), World Health Organization (WHO) classification, and immunophenotypes of 25 cytoplasmic and surface markers. IL37 mRNA expression was given as median and interquartile range. Low expression of IL37 mRNA (0.273 [0.062-0.456]) was found in AML patients. This reduced expression was more pronounced in females than in males but the difference was significant before the Bonferroni correction (0.196 [0.045-0.411] vs. 0.4 [0.153-0.466]; probability [p] = 0.008; corrected p = 0.064). In addition, the FAB M4 type (0.109 [0.031-0.269]) and the WHO PML-RARA type (0.171 [0.061-0.482]) had the lowest expression of IL37 mRNA among the other types. For immunophenotypes, only two significant differences were found. First, CD14-positive patients showed a lower level of expression than CD14-negative patients (0.146 [0.033-0.413] vs. 0.323 [0.108-0.468]; p = 0.02). Second, HLA-DR-positive patients showed a higher level of expression than HLA-DR-negative patients (0.325 [0.163-0.474] vs. 0.214 [0.045-0.42]; p = 0.04). However, the corrected p-value was not significant in both cases (p > 0.05). In conclusion, IL37 mRNA expression was down-regulated in AML patients, especially females, and those with the FAB M4 type and the WHO PML-RARA type. This expression may be affected by the immunophenotypic markers CD14 and HLA-DR.
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Affiliation(s)
- Mustafa A Bashi
- Department of Biotechnology, College of Science, University of Baghdad, Baghdad, Iraq
| | - Ali H Ad'hiah
- Tropical-Biological Research Unit, College of Science, University of Baghdad, Baghdad, Iraq.
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5
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Gu M, Jin Y, Gao X, Xia W, Xu T, Pan S. Novel insights into IL-37: an anti-inflammatory cytokine with emerging roles in anti-cancer process. Front Immunol 2023; 14:1278521. [PMID: 37928545 PMCID: PMC10623001 DOI: 10.3389/fimmu.2023.1278521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/09/2023] [Indexed: 11/07/2023] Open
Abstract
Interleukin-37 (IL-37) is a newly discovered member of IL-1 family. The cytokine was proved to have extensive protective effects in infectious diseases, allergic diseases, metabolic diseases, autoimmune diseases and tumors since its discovery. IL-37 was mainly produced by immune and some non-immune cells in response to inflammatory stimulus. The IL-37 precursors can convert into the mature forms after caspase-1 cleavage and activation intracellularly, and then bind to Smad-3 and transfer to the nucleus to inhibit the production and functions of proinflammatory cytokines; extracellularly, IL-37 binds to cell surface receptors to form IL-37/IL-18Rα/IL-1R8 complex to exert immunosuppressive function via inhibiting/activating multiple signal pathways. In addition, IL-37 can attenuate the pro-inflammatory effect of IL-18 through directly or forming an IL-37/IL-18BP/IL-18Rβ complex. Therefore, IL-37 has the ability to suppress innate and acquired immunity of the host, and effectively control inflammatory stimulation, which was considered as a new hallmark of cancer. Specifically, it is concluded that IL-37 can inhibit the growth and migration of tumor cells, prohibit angiogenesis and mediate the immunoregulation in tumor microenvironment, so as to exert effective anti-tumor effects. Importantly, latest studies also showed that IL-37 may be a novel therapeutic target for cancer monitoring. In this review, we summarize the immunoregulation roles and mechanisms of IL-37 in anti-tumor process, and discuss its progress so far and potential as tumor immunotherapy.
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Affiliation(s)
- Min Gu
- Department of Laboratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, China
| | - Yuexinzi Jin
- Department of Laboratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, China
| | - Xun Gao
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, China
| | - Wenying Xia
- Department of Laboratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, China
| | - Ting Xu
- Department of Laboratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, China
| | - Shiyang Pan
- Department of Laboratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing, China
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6
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Tsuji G, Yamamura K, Kawamura K, Kido-Nakahara M, Ito T, Nakahara T. Regulatory Mechanism of the IL-33-IL-37 Axis via Aryl Hydrocarbon Receptor in Atopic Dermatitis and Psoriasis. Int J Mol Sci 2023; 24:14633. [PMID: 37834081 PMCID: PMC10572928 DOI: 10.3390/ijms241914633] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Interleukin (IL)-33 and IL-37 have been identified as novel cytokines involved in various inflammatory diseases. However, their specific roles remain largely unknown. Recent studies have shown that IL-33, which triggers inflammation, and IL-37, which suppresses it, cooperatively regulate the balance between inflammation and anti-inflammation. IL-33 and IL-37 are also deeply involved in the pathogenesis of inflammatory skin diseases such as atopic dermatitis (AD) and psoriasis. Furthermore, a signaling pathway by which aryl hydrocarbon receptor (AHR), a receptor for dioxins, regulates the expression of IL-33 and IL-37 has been revealed. Here, we outline recent findings on the mechanisms regulating IL-33 and IL-37 expression in AD and psoriasis. IL-33 expression is partially dependent on mitogen-activated protein kinase (MAPK) activation, and IL-37 has a role in suppressing MAPK in human keratinocytes. Furthermore, IL-33 downregulates skin barrier function proteins including filaggrin and loricrin, thereby downregulating the expression of IL-37, which colocalizes with these proteins. This leads to an imbalance of the IL-33-IL-37 axis, involving increased IL-33 and decreased IL-37, which may be associated with the pathogenesis of AD and psoriasis. Therefore, AHR-mediated regulation of the IL-33-IL-37 axis may lead to new therapeutic strategies for the treatment of AD and psoriasis.
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Affiliation(s)
- Gaku Tsuji
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.Y.); (T.N.)
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
| | - Kazuhiko Yamamura
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.Y.); (T.N.)
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
| | - Koji Kawamura
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
| | - Makiko Kido-Nakahara
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
| | - Takamichi Ito
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
| | - Takeshi Nakahara
- Research and Clinical Center for Yusho and Dioxin, Kyushu University Hospital, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.Y.); (T.N.)
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; (K.K.); (M.K.-N.); (T.I.)
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Zhao Y, Jia S, Zhang K, Zhang L. Serum cytokine levels and other associated factors as possible immunotherapeutic targets and prognostic indicators for lung cancer. Front Oncol 2023; 13:1064616. [PMID: 36874133 PMCID: PMC9977806 DOI: 10.3389/fonc.2023.1064616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 01/24/2023] [Indexed: 02/18/2023] Open
Abstract
Lung cancer is one of the most prevalent cancer types and the leading cause of cancer-related deaths worldwide. Non-small cell lung cancer (NSCLC) accounts for 80-85% of all cancer incidences. Lung cancer therapy and prognosis largely depend on the disease's degree at the diagnosis time. Cytokines are soluble polypeptides that contribute to cell-to-cell communication, acting paracrine or autocrine on neighboring or distant cells. Cytokines are essential for developing neoplastic growth, but they are also known to operate as biological inducers following cancer therapy. Early indications are that inflammatory cytokines such as IL-6 and IL-8 play a predictive role in lung cancer. Nevertheless, the biological significance of cytokine levels in lung cancer has not yet been investigated. This review aimed to assess the existing literature on serum cytokine levels and additional factors as potential immunotherapeutic targets and lung cancer prognostic indicators. Changes in serum cytokine levels have been identified as immunological biomarkers for lung cancer and predict the effectiveness of targeted immunotherapy.
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Affiliation(s)
- Yinghao Zhao
- Department of Thoracic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Shengnan Jia
- Department of Hepatopancreatobiliary Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Kun Zhang
- Department of Central Lab, The Second Hospital of Jilin University, Changchun, China
| | - Lian Zhang
- Department of Pathology, The Second Hospital of Jilin University, Changchun, China
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Aberrant Expression and Prognostic Potential of IL-37 in Human Lung Adenocarcinoma. Biomedicines 2022; 10:biomedicines10123037. [PMID: 36551790 PMCID: PMC9775426 DOI: 10.3390/biomedicines10123037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/26/2022] Open
Abstract
Interleukin-37 (IL-37) is a relatively new IL-1 family cytokine that, due to its immunoregulatory properties, has lately gained increasing attention in basic and translational biomedical research. Emerging evidence supports the implication of this protein in any human disorder in which immune homeostasis is compromised, including cancer. The aim of this study was to explore the prognostic and/or diagnostic potential of IL-37 and its receptor SIGIRR (single immunoglobulin IL-1-related receptor) in human tumors. We utilized a series of bioinformatics tools and -omics datasets to unravel possible associations of IL-37 and SIGIRR expression levels and genetic aberrations with tumor development, histopathological parameters, distribution of tumor-infiltrating immune cells, and survival rates of patients. Our data revealed that amongst the 17 human malignancies investigated, IL-37 exhibits higher expression levels in tumors of lung adenocarcinoma (LUAD). Moreover, the expression profiles of IL-37 and SIGIRR are associated with LUAD development and tumor stage, whereas their high mRNA levels are favorable prognostic factors for the overall survival of patients. What is more, IL-37 correlates positively with a LUAD-associated transcriptomic signature, and its nucleotide changes and expression levels are linked with distinct infiltration patterns of certain cell subsets known to control LUAD anti-tumor immune responses. Our data indicate the potential value of IL-37 and its receptor SIGIRR to serve as biomarkers and/or immune-checkpoint therapeutic targets for LUAD patients. Further, the data highlight the urgent need for further exploration of this cytokine and the underlying pathogenetic mechanisms to fully elucidate its implication in LUAD development and progression.
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Ma Y, Su H, Wang X, Niu X, Che Y, Hambly BD, Bao S, Wang X. The role of IL-35 and IL-37 in breast cancer - potential therapeutic targets for precision medicine. Front Oncol 2022; 12:1051282. [PMID: 36483045 PMCID: PMC9723453 DOI: 10.3389/fonc.2022.1051282] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/24/2022] [Indexed: 11/07/2023] Open
Abstract
Breast cancer is still a major concern due to its relatively poor prognosis in women, although there are many approaches being developed for the management of breast cancer. Extensive studies demonstrate that the development of breast cancer is determined by pro versus anti tumorigenesis factors, which are closely related to host immunity. IL-35 and IL-37, anti-inflammatory cytokines, play an important role in the maintenance of immune homeostasis. The current review focuses on the correlation between clinical presentations and the expression of IL-35 and IL-37, as well as the potential underlying mechanism during the development of breast cancer in vitro and in vivo. IL-35 is inversely correlated the differentiation and prognosis in breast cancer patients; whereas IL-37 shows dual roles during the development of breast cancer, and may be breast cancer stage dependent. Such information might be useful for both basic scientists and medical practitioners in the management of breast cancer patients.
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Affiliation(s)
- Yuntao Ma
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - He Su
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Xuyun Wang
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Xiangdong Niu
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Yang Che
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Brett D Hambly
- Centre for Healthy Futures, Torrens University Australia, Sydney, NSW, Australia
| | - Shisan Bao
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Xiaopeng Wang
- Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
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Zeng H, Zhou K, Ye Z. Biology of interleukin‑37 and its role in autoimmune diseases (Review). Exp Ther Med 2022; 24:495. [PMID: 35837057 PMCID: PMC9257848 DOI: 10.3892/etm.2022.11422] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 05/10/2022] [Indexed: 11/06/2022] Open
Abstract
Autoimmune diseases (AIDs) are characterized by dysfunction and tissue destruction, and recent studies have shown that interleukin (IL)-37 expression is dysregulated in AIDs. Among cytokines of the IL-1 family, most are pro-inflammatory agents, and as an anti-inflammatory cytokine, IL-37 may have the potential to alleviate excessive inflammation and can be used as a ligand or transcription factor that is involved in regulating innate and adaptive immunity. IL-37 plays important roles in the development of AIDs. This review summarizes the biological characteristics and functions of IL-37 and discusses the potential of IL-37 as a therapeutic target for effective cytokine therapy and as a biomarker in AIDs.
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Affiliation(s)
- Huiqiong Zeng
- Department of Rheumatology, Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, Guangdong 518040, P.R. China
| | - Kaixia Zhou
- School of Biomedical Sciences, CUHK‑GIBH CAS Joint Laboratory on Stem Cell and Regenerative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, P.R. China
| | - Zhizhong Ye
- Department of Rheumatology, Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, Guangdong 518040, P.R. China
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11
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Wang Y, Zhang G, Huang W. MiR-300 promotes the proliferation, migration and invasion of fibroblast-like synoviocytes in rheumatoid arthritis by targeting IL-37. Autoimmunity 2022; 55:371-377. [PMID: 35658770 DOI: 10.1080/08916934.2022.2081842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Fibroblast-like synoviocytes (FLS) are crucial regulators in the pathogenesis of rheumatoid arthritis (RA). Reportedly, microRNA (miR) participates in regulating the pathogenesis of RA. In this study, we explored the regulatory effects of miR-300 on the proliferation, migration and invasion of FLS, which were obtained from RA patients. METHODS qPCR was utilized to detect miR-300 expression and interleukin-37 (IL-37) mRNA expression in the synovial tissue of RA patients and healthy controls. Cell counting kit-8 (CCK-8) assay and Transwell assay were performed to investigate the regulatory function of miR-300 on the proliferation, migration and invasion of FLS. ELISA was employed to detect TNF-α, IL-6 and IL-8 levels, to evaluate the inflammatory response. Bioinformatics analysis and luciferase reporter assay were applied to validate the targeting relationship between miR-300 and IL-37. Western blot assay was executed to detect IL-37 protein expression in FLS. RESULTS MiR-300 was revealed to be markedly down-modulated in the synovial tissue and FLS of RA patients; meanwhile, IL-37 expression was up-modulated. The transfection of miR-300 mimics enhanced RA-FLS growth, migration, invasion and inflammatory response; transfection of miR-300 inhibitors repressed the growth, migration, invasion and inflammatory response of RA-FLS. IL-37 was identified as a downstream target of miR-300, and IL-37 partially counteracted the enhanced growth, migration, invasion and inflammatory response of RA-FLS induced by miR-300. CONCLUSION MiR-300 facilitates growth, migration, invasion and inflammatory response of FLS by targeting IL-37, suggesting it was a crucial regulator in the pathogenesis of RA.
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Affiliation(s)
- Ying Wang
- Department of Geriatrics, Tangshan Gongren Hospital, Tangshan, Hebei, China
| | - Ge Zhang
- Department of Geriatrics, Tangshan Gongren Hospital, Tangshan, Hebei, China
| | - Wei Huang
- Department of Geriatrics, Tangshan Gongren Hospital, Tangshan, Hebei, China
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12
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Interleukin 37's role in promoting nerve repair and attenuating immune rejection of peripheral nerve xenografts in mice. Transpl Immunol 2022; 71:101550. [PMID: 35122956 DOI: 10.1016/j.trim.2022.101550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 12/15/2021] [Accepted: 01/29/2022] [Indexed: 11/20/2022]
Abstract
Background The aim of the study was to explore the potential role of IL-37 in nerve repair and immune regulation in peripheral nerve xenograft hosts. Methods Rat nerve xenografts were transplanted into mouse recipients. Transplanted mice received an intraperitoneal injection of IL-37 on the day before transplantation, whereas control mice remained untreated. At postoperative 2, 4, 8, and 12 weeks, the effects of IL-37 were examined on motor function, tissue morphology, and regenerative ability of xenograft nerves. Levels of IL-17 and IL-22 in serum and spleen were measured at 3, 7, 14, and 28 days after nerve transplantation. Results At 12 postoperative weeks, grafted nerves grew well in IL-37 treatment group, as documented by the recovery in function of sciatic nerves compared to untreated controls. In particular, IL-37-treated mice showed more complete neuromorphology, thicker myelin sheath, compact structure, and the increased number of myelinated nerve fibers in histological examination. The number of T helper (Th)17 (CD3 + CD4 + IL-17+) and Th22 (CD3 + CD4 + IL-22+) cells in the spleen was reduced in the IL-37-treated group, as well as serum IL-17 and IL-22 were decreased after IL-37 treatment compared with the untreated group. Conclusions IL-37 attenuates immunomodulatory responses induced by xenografts, contributing to the recovery of nerve function and the prevention of muscle atrophy caused by nerve grafts.
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Li L, Liao Z, Ye M, Jiang J. Recombinant human IL-37 inhibited endometriosis development in a mouse model through increasing Th1/Th2 ratio by inducing the maturation of dendritic cells. Reprod Biol Endocrinol 2021; 19:128. [PMID: 34429116 PMCID: PMC8383354 DOI: 10.1186/s12958-021-00811-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/27/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Endometriosis is a serious reproductive and general health consequences. Recombinant human IL-37 (rhIL-37) is an inhibitor of inflammation. METHODS ELISA assay was performed to detect the concentration of cytokines. Flow cytometry was used to analyze cell proportion. Besides, qRT-PCR and western blotting assay were used to detect the level of gene and protein, respectively. Transwell co-culture system was used for the co-culture of dendritic cells (DCs) and CD4+T cells. RESULTS Our data showed that rhIL-37 inhibited the development of ectopic lesions in the mice with endometriosis, increased Th1/Th2 ratio and induced DCs maturation. The co-culture system of DCs and CD4+T cells demonstrated that rhIL-37 increased Th1/Th2 cell ratio through promoting DCs maturation. Moreover, the expression of IL-4 in the DCs derived from healthy mice was inhibited by rhIL-37 treatment. rhIL-37 increased Th1/Th2 cell ratio through inhibiting IL-4 in DCs. Subsequently, our results proved that rhIL-37 promoted the maturation of DCs via inhibiting phosphorylation of STAT3. Activation of STAT3 could reverse rhIL-37-induced maturation of DCs. CONCLUSION Overall, rhIL-37 could protect against endometriosis through increasing the ratio of Th1/Th2 cells via inducing DCs maturation and inhibiting IL-4 expression in the DCs. Furthermore, rhIL-37 induced DCs maturation by inhibiting STAT3 phosphorylation. Our data confirmed the protective effect of rhIL-37 in endometriosis. These data may provide a novel idea for the treatment of the disease.
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Affiliation(s)
- Lijie Li
- Department of Gynecology, The Third Xiangya Hospital of Central South University, NO.138 tongzipo, Yuelu District, Hunan, 410013, Changsha, China
| | - Zhouzhou Liao
- Department of Gynecology, The Third Xiangya Hospital of Central South University, NO.138 tongzipo, Yuelu District, Hunan, 410013, Changsha, China
| | - Mingzhu Ye
- Department of Gynecology, The Third Xiangya Hospital of Central South University, NO.138 tongzipo, Yuelu District, Hunan, 410013, Changsha, China
| | - Jianfa Jiang
- Department of Gynecology, The Third Xiangya Hospital of Central South University, NO.138 tongzipo, Yuelu District, Hunan, 410013, Changsha, China.
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14
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Santarelli DM, Vincent FB, Rudloff I, Nold-Petry CA, Nold MF, Russo MA. Circulating Interleukin-37 Levels in Healthy Adult Humans - Establishing a Reference Range. Front Immunol 2021; 12:708425. [PMID: 34367169 PMCID: PMC8343013 DOI: 10.3389/fimmu.2021.708425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/02/2021] [Indexed: 12/29/2022] Open
Abstract
Interleukin (IL)-37 has an important function in limiting excessive inflammation. Its expression is increased in numerous inflammatory and autoimmune conditions and correlates with disease activity, suggesting it could have potential as a disease biomarker. Nevertheless, a reference range has yet to be determined. Our aim was to establish the first reference range of circulating IL-37 levels in healthy adult humans. PubMed was searched for studies reporting blood IL-37 concentrations in healthy adult subjects as measured by enzyme-linked immunosorbent assay. Nineteen studies were included in the analysis. Mean IL-37 levels were weighted by sample sizes, and weighted mean lower and upper levels ( ± 2SD of means) were calculated to provide a weighted mean and reference range. IL-37 levels were quantified in either serum or plasma from a total of 1035 (647 serum; 388 plasma) healthy subjects. The serum, plasma and combined matrix weighted means (reference ranges) were 72.9 (41.5 – 104.4) pg/mL, 83.9 (41.1 – 126.8) pg/mL, and 77.1 (41.4 – 112.8) pg/mL, respectively. There were no significant differences between serum and plasma means and upper and lower limits. Study means and upper IL-37 levels were significantly higher in Chinese population studies. From our analysis, a preliminary reference range for circulating IL-37 levels in healthy human adults has been established. In order to determine a reliable reference range for clinical application, large, prospective, multi-ethnic, healthy population studies are necessary. In addition, demographics, sample matrix, collection, processing and storage methods potentially affecting IL-37 detection levels should be thoroughly investigated.
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Affiliation(s)
| | - Fabien B Vincent
- Centre for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia
| | - Ina Rudloff
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Clayton, VIC, Australia
| | - Claudia A Nold-Petry
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Clayton, VIC, Australia
| | - Marcel F Nold
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Clayton, VIC, Australia.,Monash Newborn, Monash Children's Hospital, Melbourne, VIC, Australia
| | - Marc A Russo
- Genesis Research Services, Broadmeadow, NSW, Australia.,Hunter Pain Specialists, Broadmeadow, NSW, Australia
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15
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Farahani N, Mohagheghi F, Mosayebi G, Ghazavi A, Ganji A. Reduced IL-37 gene expression and CD8 T lymphocytes in patients with metastatic breast cancer. Breast Dis 2021; 40:235-240. [PMID: 34024810 DOI: 10.3233/bd-201055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND However, the exact immunopathological mechanisms in the progression of breast cancer are not clearly understood, various factors including CD8 T lymphocytes have lethal properties on tumor cells. On the other hand, interleukin-37 (IL-37), as a new member of the IL-1 family, is an anti-inflammatory cytokine; however, the exact role of IL-37 in breast cancer has not yet been determined. OBJECTIVE This study aimed to evaluate the CD8 T lymphocytes count and IL-37 gene expression in newly diagnosed breast cancer patients with and without metastasis. METHODS In this study, blood samples from 36 metastatic and 36 non-metastatic breast cancer patients and 36 healthy individuals as control were collected. After RNA extraction and cDNA synthesis, the relative gene expression was performed using real-time PCR. Also, counting the CD8 T lymphocytes was done by flow cytometry technique. RESULTS The results of this study showed that the gene expression of IL-37 in blood samples of metastatic and non-metastatic breast cancer patients was significantly lower than in healthy individuals (P < 0.05). The relative gene expression of the IL-37 in ER+/PR+/HER2+ patients with non-metastatic breast cancer had a significant increase compared to HER2+ patients (P < 0.05). Also, CD8 T lymphocytes count in the samples of patients including non-metastatic and metastatic breast cancer was significantly decreased compared to the healthy individuals (P < 0.05). CONCLUSIONS Our findings provide evidence that IL-37 gene expression and CD8 T lymphocytes count, significantly decreased in non-metastatic and metastatic breast cancer. Considering the possible effects of IL-37 on TCD8 cells in tumor immune responses, more research will be done to benefit from the therapeutic effects of this cytokine in the future.
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Affiliation(s)
- Najmeh Farahani
- Department of Immunology & Microbiology, School of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Fathollah Mohagheghi
- Department of Radiotherapy and Oncology, Arak University of Medical Sciences, Arak, Iran
| | - Ghasem Mosayebi
- Department of Immunology & Microbiology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.,Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, Iran
| | - Ali Ghazavi
- Department of Immunology & Microbiology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.,Traditional and Complementary Medicine Research Center (TCMRC), Arak University of Medical Sciences, Arak, Iran
| | - Ali Ganji
- Department of Immunology & Microbiology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.,Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, Iran
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16
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Mei Y, Liu H. IL-37: An anti-inflammatory cytokine with antitumor functions. Cancer Rep (Hoboken) 2018; 2:e1151. [PMID: 32935478 DOI: 10.1002/cnr2.1151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND IL-37 is a newly identified IL-1 family cytokine. Unlike other members in IL-1 family, IL-37 has been demonstrated to be an anti-inflammatory cytokine in many inflammatory and autoimmune diseases. IL-37 is regarded as a dual-function cytokine as both the extracellular and intracellular IL-37 are biologically functional. Extracellular IL-37 can bind to IL-18Rα and IL-1R8 to form a triple complex, regulating the downstream STAT3 and PTEN signaling. Intracellular IL-37 can interact with Smad3, translocate into nucleus, and regulate downstream target gene expressions. Recently, the role of IL-37 in tumor development has been extensively studied. RECENT FINDINGS IL-37 has been found to play an antitumor role in various types of tumors, such as non-small cell lung cancer, hepatocellular carcinoma, and renal cell carcinoma. Many mechanism studies have been carried out to elaborate the possible effects of IL-37 on tumor growth, immune responses, and tumor angiogenesis. More importantly, the function of IL-37 may be dependent on its concentration and receptor expression. It can form dimers at high concentrations to be inactivated, thus inhibiting its anti-inflammatory function. We focused on the role of IL-37 in various tumor types and provided the hypothesis regarding the underlying mechanisms. CONCLUSION IL-37 may affect tumor development through multiple mechanisms: (1) IL-37 directly influences tumor cell viability; (2) IL-37 regulates the immune response to promote the antitumor immunity; and (3) IL-37 suppresses tumor angiogenesis in the tumor microenvironment. Future studies are warranted to further investigate the mechanisms of these multifaceted functions of IL-37 in animal models and cancer patients.
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Affiliation(s)
- Yu Mei
- Immunology Programme, Life Sciences Institute and Department of Microbiology and Immunology, National University of Singapore, Singapore
| | - Haiyan Liu
- Immunology Programme, Life Sciences Institute and Department of Microbiology and Immunology, National University of Singapore, Singapore
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