1,25-Dihydroxyvitamin D promotes negative feedback regulation of TLR signaling via targeting microRNA-155-SOCS1 in macrophages.
1,25-Dihydroxyvitamin D promotes negative feedback regulation of TLR signaling via targeting microRNA-155-SOCS1 in macrophages.
复制标题
DOI:
10.4049/jimmunol.1203273
复制
发表时间:
2013-04-01
期刊:
影响因子:
--
通讯作者:
Li YC
中科院分区:
文献类型:
--
作者:
Chen Y;Liu W;Sun T;Huang Y;Wang Y;Deb DK;Yoon D;Kong J;Thadhani R;Li YC
The negative feedback mechanism is essential to maintain effective immunity and tissue homeostasis. 1,25-dihydroxyvitamin D (1,25(OH)2D3) modulates innate immune response, but the mechanism remains poorly understood. Here we report that vitamin D receptor (VDR) signaling attenuates Toll-like receptor-mediated inflammation by enhancing the negative feedback inhibition. VDR inactivation leads to hyper inflammatory response in mice and macrophage cultures when challenged with lipopolysaccharide (LPS), due to miR-155 overproduction that excessively suppresses SOCS1, a key regulator that enhances the negative feedback loop. Deletion of miR-155 attenuates vitamin D suppression of LPS-induced inflammation, confirming that 1,25(OH)2D3 stimulates SOCS1 by down-regulating miR-155. 1,25(OH)2D3 down-regulates bic transcription by inhibiting NF-κB activation, which is mediated by a κB cis-DNA element located within the first intron of the bic gene. Together these data identify a novel regulatory mechanism for vitamin D to control innate immunity.
登录
查看更多内容
影响因子:
20.3
作者:
Chong, MMW;Metcalf, D;Kay, TWH
通讯作者:
Kay, TWH
影响因子:
56.9
作者:
Liu, PT;Stenger, S;Modlin, RL
通讯作者:
Modlin, RL
影响因子:
15.3
作者:
Burns, K;Janssens, S;Brissoni, B;Olivos, N;Beyaert, R;Tschopp, J
通讯作者:
Tschopp, J
影响因子:
4.4
作者:
Boonstra, A;Barrat, FJ;O'Garra, A
通讯作者:
O'Garra, A
DOI:
10.1086/596314
发表时间:
2009-02-15
期刊:
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America
影响因子:
--
作者:
Gombart AF;Bhan I;Borregaard N;Tamez H;Camargo CA Jr;Koeffler HP;Thadhani R
通讯作者:
Thadhani R