Pro- and Anti- Effects of Immunoglobulin A- Producing B Cell in Tumors and Its Triggers

作者：Ziwen Zhong, Ke Nan, Meilin Weng, Ying Yue, Wenchang Zhou, Zhiqiang Wang, Yiwei Chu, Ronghua Liu, Changhong Miao · 发表于：Frontiers in Immunology · 年份：2021 · DOI：10.3389/fimmu.2021.765044 · 被引用次数：34 · 研究领域：Immune Cell Function and Interaction、T-cell and B-cell Immunology、Monoclonal and Polyclonal Antibodies Research

B cells are well known as key mediators of humoral immune responses via the production of antibodies. Immunoglobulin A (IgA) is the most abundantly produced antibody isotype and provides the first line of immune protection at mucosal surfaces. However, IgA has long been a divisive molecule with respect to tumor progression. IgA exerts anti- or pro-tumor effect in different tumor types. In this review, we summarize emerging evidence regarding the production and effects of IgA and IgA + cells in the tumor microenvironment (TME). Moreover, we discuss that the TME cytokines, host diet, microbiome, and metabolites play a pivotal role in controlling the class-switch recombination (CSR) of IgA. The analysis of intratumoral Ig repertoires and determination of metabolites that influence CSR may help establish novel therapeutic targets for the treatment of cancers.