Intestinal commensal microbiota and cytokines regulate Fut2 <sup>+</sup> Paneth cells for gut defense
Mariko Kamioka, Yoshiyuki Goto, Kiminori Nakamura, Yuki Yokoi, Rina Sugimoto, Shuya Ohira, Yosuke Kurashima, Shingo Umemoto, Shintaro Sato, Jun Kunisawa, Yu Takahashi, Steven E. Domino, Jean-Christophe Renauld, Susumu Nakae, Yoichiro Iwakura, Peter B. Ernst, Tokiyoshi Ayabe, Hiroshi Kiyono
Abstract
Significance Paneth cells produce granules containing antimicrobial peptides, such as α-defensin for host defense. Examination of the production and utilization of fucosyltransferase 2 (Fut2) by Paneth cells revealed two distinct subsets: Fut2 + Paneth cells and Fut2 − Paneth cells. Compared with Fut2 − Paneth cells, Fut2 + Paneth cells were enriched in granules containing antimicrobial peptides. IL-22 and IL-17a were found to be essential for commensal bacteria-dependent Fut2 + Paneth cell development and function as part of gut defense.