Pluto Bioinformatics

GSE124561: Epithelial endoplasmic reticulum stress orchestrates a protective IgA response I

Bulk RNA sequencing

Immunoglobulin A (IgA) is the major secretory immunoglobulin isotype at mucosal surfaces where it regulates microbial commensalism and excludes luminal factors from contacting intestinal epithelial cells (IEC). IEC endoplasmic reticulum (ER) stress induces a polyreactive IgA response which protects from small intestinal inflammation. IEC ER stress causes expansion and activation of peritoneal B1b cells independent of microbiota and T cells that culminates in increased lamina propria and luminal IgA. Xbp1dIEC mice exhibit IEC ER stress by conditional deletion of X-box-binding protein 1 (XBP1). Here we examine differentially expressed genes in peritoneal B1b cells of germ-free Xbp1dIEC mice compared to littermate (WT) controls. SOURCE: Niklas Krupka (niklas.krupka@gmail.com) - Blumberg Lab Brigham and Women's Hospital