Human gut bacterial metabolism drives Th17 activation and colitis.
Human gut bacterial metabolism drives Th17 activation and colitis.
复制标题
DOI:
10.1016/j.chom.2021.11.001
复制
发表时间:
2022-01-12
影响因子:
30.3
通讯作者:
Turnbaugh PJ
中科院分区:
文献类型:
--
作者:
Alexander M;Ang QY;Nayak RR;Bustion AE;Sandy M;Zhang B;Upadhyay V;Pollard KS;Lynch SV;Turnbaugh PJ
Bacterial activation of T helper 17 (Th17) cells exacerbates mouse models of autoimmunity, but how human-associated bacteria impact Th17-driven disease remains elusive. We show that human gut Actinobacterium Eggerthella lenta induces intestinal Th17 activation by lifting inhibition of the Th17 transcription factor Rorγt through cell- and antigen-independent mechanisms. E. lenta is enriched in inflammatory bowel disease (IBD) patients and worsens colitis in a Rorc-dependent manner in mice. Th17 activation varies across E. lenta strains, which is attributable to the Cardiac glycoside reductase 2 (Cgr2) enzyme. Cgr2 is sufficient to induce interleukin(IL)-17a, a major Th17 cytokine. cgr2+ E. lenta deplete putative steroidal glycosides in pure culture; related compounds are negatively associated with human IBD severity. Finally, leveraging the sensitivity of Cgr2 to dietary arginine, we prevented E. lenta-induced intestinal inflammation in mice. Together, these results support a role for human gut bacterial metabolism in driving Th17-dependent autoimmunity. Alexander et al. show an autoimmune-associated microbe, Eggerthella lenta, activates Th17 cells and worsens mouse models of colitis. Using strain-level variation, comparative genomics, and bacterial genetics they demonstrate that the Cardiac glycoside reductase 2 (Cgr2) enzyme is sufficient for Th17 activation and that elevated dietary arginine blocks E. lenta-induced colitis.
登录
查看更多内容
影响因子:
4.3
作者:
da Silva RR;Wang M;Nothias LF;van der Hooft JJJ;Caraballo-Rodríguez AM;Fox E;Balunas MJ;Klassen JL;Lopes NP;Dorrestein PC
通讯作者:
Dorrestein PC
DOI:
10.1126/science.1198469
发表时间:
2011-01-21
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Atarashi K;Tanoue T;Shima T;Imaoka A;Kuwahara T;Momose Y;Cheng G;Yamasaki S;Saito T;Ohba Y;Taniguchi T;Takeda K;Hori S;Ivanov II;Umesaki Y;Itoh K;Honda K
通讯作者:
Honda K
影响因子:
64.5
作者:
Ang, Qi Yan;Alexander, Margaret;Turnbaugh, Peter J.
通讯作者:
Turnbaugh, Peter J.
影响因子:
15.5
作者:
Fernandes AD;Reid JN;Macklaim JM;McMurrough TA;Edgell DR;Gloor GB
通讯作者:
Gloor GB
影响因子:
32.4
作者:
Britton, Graham J.;Contijoch, Eduardo J.;Faith, Jeremiah J.
通讯作者:
Faith, Jeremiah J.