Research Project
Grant-in-Aid for Scientific Research (C)
Microfold (M) cells residing in the follicle-associated epithelium (FAE) of the gut-associated lymphoid tissue are specialized for antigen uptake to initiate mucosal immune responses. The molecular machinery and biological significance of M cell differentiation, however, remain to be fully elucidated. Here, we demonstrate that Sox8, a member of the SRY-related HMG box transcription factor family, is specifically expressed by M cells in the intestinal epithelium. Sox8 directly binds the promoter region of Gp2 to increase Gp2 expression, which is the hallmark of functionally mature M cells. Furthermore, genetic deletion of Sox8 causes a marked decrease in the number of mature M cells, resulting in reduced antigen uptake in Peyer's patches. Consequently, juvenile Sox8-deficient mice showed attenuated germinal center reactions and antigen-specific IgA responses. These findings indicate that Sox8 plays an essential role in the development of M cells to establish mucosal immune responses.
M細胞分化を制御する機構には不明な点が多かった。本研究によってSox8がM細胞の機能的な成熟に関与していることが明らかになった。Sox8によって制御される分子の解析を今後続けていくことで、M細胞がどのようにして抗原取り込み能を獲得していくかが明らかになると期待できる。Sox8欠損マウスでは特に離乳後のIgA抗体産生能力が低下していた。これは生後の免疫を獲得するために必要であることから、今後の乳幼児医療に有用な知見となる。
All 2019 2018 2017 2016 Other
All Journal Article (14 results) (of which Int'l Joint Research: 4 results, Peer Reviewed: 14 results, Open Access: 11 results) Presentation (22 results) (of which Int'l Joint Research: 3 results, Invited: 1 results) Book (2 results) Remarks (3 results)
The Journal of Experimental Medicine
Volume: 216 Issue: 4 Pages: 831-846
10.1084/jem.20181604
Scientific Reports
Volume: 8 Issue: 1 Pages: 1-9
10.1038/s41598-018-29100-7
Inflammation and Regeneration
Volume: 38 Issue: 1 Pages: 15-15
10.1186/s41232-018-0072-y
Exp Eye Res
Volume: 未定 Pages: 1-9
10.1016/j.exer.2018.03.024
J Exp Med.
Volume: 5;215(2) Issue: 2 Pages: 501-519
10.1084/jem.20160659
Anat Sci Int.
Volume: 93 Issue: 1 Pages: 23-34
10.1007/s12565-017-0418-6
Front Mol Neurosci.
Volume: 10 Pages: 333-333
10.3389/fnmol.2017.00333
J Cell Commun. Signal.
Volume: 11 Issue: 4 Pages: 369-380
10.1007/s12079-017-0397-3
American Journal of Physiology-Renal Physiology
Volume: 印刷中 Issue: 1 Pages: F20-F29
10.1152/ajprenal.00539.2016
Biochem Biophys Rep.
Volume: 9 Pages: 322-329
10.1016/j.bbrep.2017.01.009
Biomedical Research
Volume: 37 Issue: 6 Pages: 351-358
10.2220/biomedres.37.351
130005252684
Volume: 37 Issue: 5 Pages: 319-328
10.2220/biomedres.37.319
130005433002
PLoS Genetics
Volume: 12 Issue: 10 Pages: e1006349-e1006349
10.1371/journal.pgen.1006349
Volume: 6 Issue: 1 Pages: 33548-33548
10.1038/srep33548
120005855947
https://www.hokudai.ac.jp/news/190326_pr.pdf
https://www.global.hokudai.ac.jp/blog/identifying-a-key-player-in-gut-defense-development/
https://www.hokudai.ac.jp/news/160914_nanotube_pr.pdf