AUTHOR=Danger Richard, Braza Faouzi, Giral Magali, Soulillou Jean-Paul, Brouard Sophie TITLE=MicroRNAs, Major Players in B Cells Homeostasis and Function JOURNAL=Frontiers in Immunology VOLUME=5 YEAR=2014 URL=https://www.frontiersin.org/articles/10.3389/fimmu.2014.00098 DOI=10.3389/fimmu.2014.00098 ISSN=1664-3224 ABSTRACT=As a main actor in humoral immunity, B cells participate in various antibody-related disorders. However, a deeper understanding of B-cell differentiation and function is needed in order to decipher their immune-modulatory roles, notably with the recent highlighting of regulatory B cells. microRNAs (miRNAs), key factors in various biological and pathological processes, have been shown to be essential for B-cell homeostasis, and therefore understanding their participation in B-cell biology could help identify biomarkers and contribute toward curing B-cell-related immune disorders. This review aims to report studies casting light on the roles played by miRNAs in B-cell lineage and function and B-cell-related immune pathologies.