Fang-Tian Xu , Yu Ling , Hui-Xian Wei , Lingzhang Meng , Dong Yin , Zhong-Hong Lai , Yu Huang , Xiao Huang , Hai-Ye Li , Qin-Wen Luo , Jian Song , Qiang Tang , Hong-Mian Li
{"title":"BMSC外泌体传递JKAP,通过AKT/ERK恢复Th17/Treg平衡,缓解类风湿关节炎","authors":"Fang-Tian Xu , Yu Ling , Hui-Xian Wei , Lingzhang Meng , Dong Yin , Zhong-Hong Lai , Yu Huang , Xiao Huang , Hai-Ye Li , Qin-Wen Luo , Jian Song , Qiang Tang , Hong-Mian Li","doi":"10.1016/j.isci.2025.112832","DOIUrl":null,"url":null,"abstract":"<div><div>JKAP regulates T cell immunity and inflammation in autoimmune diseases. This study investigates how bone marrow mesenchymal stem cell (BMSC)-derived exosomes deliver JKAP to restore Th17/Treg balance in rheumatoid arthritis (RA). RA CD4<sup>+</sup> T-cells and fibroblast-like synoviocytes (RA-FLS) were treated with BMSC, exosomes, or JKAP-modified exosomes ± AKT/ERK inhibitors. BMSC/exosomes suppressed Th17 and promoted Treg differentiation, effects diminished without exosomes. JKAP knockdown impaired exosome-mediated Th17/Treg regulation and AKT/ERK activation, while overexpression enhanced these effects. JKAP-deficient exosomes increased CD4<sup>+</sup> T cell proliferation and RA-FLS inflammation, reversed by AKT/ERK inhibition. In collagen-induced arthritis mice, exosomes alleviated symptoms and restored Th17/Treg balance, whereas JKAP knockdown exacerbated arthritis and disrupted balance. JKAP-overexpressing exosomes showed opposite effects. Thus, BMSC exosomes mitigate RA by delivering JKAP to restore immune balance via AKT/ERK pathways.</div></div>","PeriodicalId":342,"journal":{"name":"iScience","volume":"28 7","pages":"Article 112832"},"PeriodicalIF":4.6000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"BMSC exosomes deliver JKAP to restore Th17/Treg balance via AKT/ERK, alleviating rheumatoid arthritis\",\"authors\":\"Fang-Tian Xu , Yu Ling , Hui-Xian Wei , Lingzhang Meng , Dong Yin , Zhong-Hong Lai , Yu Huang , Xiao Huang , Hai-Ye Li , Qin-Wen Luo , Jian Song , Qiang Tang , Hong-Mian Li\",\"doi\":\"10.1016/j.isci.2025.112832\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>JKAP regulates T cell immunity and inflammation in autoimmune diseases. This study investigates how bone marrow mesenchymal stem cell (BMSC)-derived exosomes deliver JKAP to restore Th17/Treg balance in rheumatoid arthritis (RA). RA CD4<sup>+</sup> T-cells and fibroblast-like synoviocytes (RA-FLS) were treated with BMSC, exosomes, or JKAP-modified exosomes ± AKT/ERK inhibitors. BMSC/exosomes suppressed Th17 and promoted Treg differentiation, effects diminished without exosomes. JKAP knockdown impaired exosome-mediated Th17/Treg regulation and AKT/ERK activation, while overexpression enhanced these effects. JKAP-deficient exosomes increased CD4<sup>+</sup> T cell proliferation and RA-FLS inflammation, reversed by AKT/ERK inhibition. In collagen-induced arthritis mice, exosomes alleviated symptoms and restored Th17/Treg balance, whereas JKAP knockdown exacerbated arthritis and disrupted balance. JKAP-overexpressing exosomes showed opposite effects. Thus, BMSC exosomes mitigate RA by delivering JKAP to restore immune balance via AKT/ERK pathways.</div></div>\",\"PeriodicalId\":342,\"journal\":{\"name\":\"iScience\",\"volume\":\"28 7\",\"pages\":\"Article 112832\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2025-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"iScience\",\"FirstCategoryId\":\"103\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589004225010934\",\"RegionNum\":2,\"RegionCategory\":\"综合性期刊\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MULTIDISCIPLINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"iScience","FirstCategoryId":"103","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589004225010934","RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
BMSC exosomes deliver JKAP to restore Th17/Treg balance via AKT/ERK, alleviating rheumatoid arthritis
JKAP regulates T cell immunity and inflammation in autoimmune diseases. This study investigates how bone marrow mesenchymal stem cell (BMSC)-derived exosomes deliver JKAP to restore Th17/Treg balance in rheumatoid arthritis (RA). RA CD4+ T-cells and fibroblast-like synoviocytes (RA-FLS) were treated with BMSC, exosomes, or JKAP-modified exosomes ± AKT/ERK inhibitors. BMSC/exosomes suppressed Th17 and promoted Treg differentiation, effects diminished without exosomes. JKAP knockdown impaired exosome-mediated Th17/Treg regulation and AKT/ERK activation, while overexpression enhanced these effects. JKAP-deficient exosomes increased CD4+ T cell proliferation and RA-FLS inflammation, reversed by AKT/ERK inhibition. In collagen-induced arthritis mice, exosomes alleviated symptoms and restored Th17/Treg balance, whereas JKAP knockdown exacerbated arthritis and disrupted balance. JKAP-overexpressing exosomes showed opposite effects. Thus, BMSC exosomes mitigate RA by delivering JKAP to restore immune balance via AKT/ERK pathways.
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