{"title":"Reciprocal regulation of T follicular helper cells and dendritic cells drives colitis development","authors":"Xue Bai, Sijie Chen, Xinxin Chi, Bowen Xie, Xinyi Guo, Han Feng, Peng Wei, Di Zhang, Shan Xie, Tian Xie, Yongzhen Chen, Mengting Gou, Qin Qiao, Xinwei Liu, Wei Jin, Wei Xu, Zixuan Zhao, Qi Xing, Xiaohu Wang, Xuegong Zhang, Chen Dong","doi":"10.1038/s41590-024-01882-1","DOIUrl":null,"url":null,"abstract":"The immunological mechanisms underlying chronic colitis are poorly understood. T follicular helper (TFH) cells are critical in helping B cells during germinal center reactions. In a T cell transfer colitis model, a lymphoid structure composed of mature dendritic cells (DCs) and TFH cells was found within T cell zones of colonic lymphoid follicles. TFH cells were required for mature DC accumulation, the formation of DC–T cell clusters and colitis development. Moreover, DCs promoted TFH cell differentiation, contributing to colitis development. A lineage-tracing analysis showed that, following migration to the lamina propria, TFH cells transdifferentiated into long-lived pathogenic TH1 cells, promoting colitis development. Our findings have therefore demonstrated the reciprocal regulation of TFH cells and DCs in colonic lymphoid follicles, which is critical in chronic colitis pathogenesis. Dong and colleagues describe how TFH cells initially interact with dendritic cells in colonic lymphoid follicles and further differentiate into long-lived pathogenic TH1 cells, promoting the progression of colitis.","PeriodicalId":19032,"journal":{"name":"Nature Immunology","volume":null,"pages":null},"PeriodicalIF":27.7000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Immunology","FirstCategoryId":"3","ListUrlMain":"https://www.nature.com/articles/s41590-024-01882-1","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The immunological mechanisms underlying chronic colitis are poorly understood. T follicular helper (TFH) cells are critical in helping B cells during germinal center reactions. In a T cell transfer colitis model, a lymphoid structure composed of mature dendritic cells (DCs) and TFH cells was found within T cell zones of colonic lymphoid follicles. TFH cells were required for mature DC accumulation, the formation of DC–T cell clusters and colitis development. Moreover, DCs promoted TFH cell differentiation, contributing to colitis development. A lineage-tracing analysis showed that, following migration to the lamina propria, TFH cells transdifferentiated into long-lived pathogenic TH1 cells, promoting colitis development. Our findings have therefore demonstrated the reciprocal regulation of TFH cells and DCs in colonic lymphoid follicles, which is critical in chronic colitis pathogenesis. Dong and colleagues describe how TFH cells initially interact with dendritic cells in colonic lymphoid follicles and further differentiate into long-lived pathogenic TH1 cells, promoting the progression of colitis.
期刊介绍:
Nature Immunology is a monthly journal that publishes the highest quality research in all areas of immunology. The editorial decisions are made by a team of full-time professional editors. The journal prioritizes work that provides translational and/or fundamental insight into the workings of the immune system. It covers a wide range of topics including innate immunity and inflammation, development, immune receptors, signaling and apoptosis, antigen presentation, gene regulation and recombination, cellular and systemic immunity, vaccines, immune tolerance, autoimmunity, tumor immunology, and microbial immunopathology. In addition to publishing significant original research, Nature Immunology also includes comments, News and Views, research highlights, matters arising from readers, and reviews of the literature. The journal serves as a major conduit of top-quality information for the immunology community.