Skip to main navigation Skip to search Skip to main content

Epithelial endoplasmic reticulum stress orchestrates a protective IgA response

  • Joep Grootjans
  • , Niklas Krupka
  • , Shuhei Hosomi
  • , Juan D Matute
  • , Thomas Hanley
  • , Svetlana Saveljeva
  • , Thomas Gensollen
  • , Jarom Heijmans
  • , Hai Li
  • , Julien P Limenitakis
  • , Stephanie C Ganal-Vonarburg
  • , Shengbao Suo
  • , Adrienne M Luoma
  • , Yosuke Shimodaira
  • , Jinzhi Duan
  • , David Q Shih
  • , Margaret E Conner
  • , Jonathan N Glickman
  • , Gwenny M Fuhler
  • , Noah W Palm
  • Marcel R de Zoete, C Janneke van der Woude, Guo-Cheng Yuan, Kai W Wucherpfennig, Stephan R Targan, Philip Rosenstiel, Richard A Flavell, Kathy D McCoy, Andrew J Macpherson, Arthur Kaser, Richard S Blumberg

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Immunoglobulin A (IgA) is the major secretory immunoglobulin isotype found at mucosal surfaces, where it regulates microbial commensalism and excludes luminal factors from contacting intestinal epithelial cells (IECs). IgA is induced by both T cell-dependent and -independent (TI) pathways. However, little is known about TI regulation. We report that IEC endoplasmic reticulum (ER) stress induces a polyreactive IgA response, which is protective against enteric inflammation. IEC ER stress causes TI and microbiota-independent expansion and activation of peritoneal B1b cells, which culminates in increased lamina propria and luminal IgA. Increased numbers of IgA-producing plasma cells were observed in healthy humans with defective autophagy, who are known to exhibit IEC ER stress. Upon ER stress, IECs communicate signals to the peritoneum that induce a barrier-protective TI IgA response.

Original languageEnglish
Pages (from-to)993-998
Number of pages6
JournalScience
Volume363
Issue number6430
DOIs
Publication statusPublished - 1 Mar 2019
Externally publishedYes

Keywords

  • Animals
  • Autophagy
  • Autophagy-Related Proteins/genetics
  • Endoplasmic Reticulum Stress
  • Epithelial Cells/immunology
  • Humans
  • Immunity, Mucosal
  • Immunoglobulin A/immunology
  • Inflammation
  • Intestinal Mucosa/immunology
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Plasma Cells/immunology
  • Tissue Culture Techniques
  • X-Box Binding Protein 1/genetics

Fingerprint

Dive into the research topics of 'Epithelial endoplasmic reticulum stress orchestrates a protective IgA response'. Together they form a unique fingerprint.

Cite this