Basic-helix-loop-helix transcription factor DEC2 constitutes negative feedback loop in IFN-β-mediated inflammatory responses in human mesangial cells

被引：9
|
作者：
Imaizumi, Tadaatsu [1 ]
Sato, Fuyuki [2 ]
Tanaka, Hiroshi [3 ,4 ]
Matsumiya, Tomoh [1 ]
Yoshida, Hidemi [1 ]
Yashiro-Aizawa, Tomomi [3 ]
Tsuruga, Kazushi [3 ]
Hayakari, Ryo [1 ]
Kijima, Hiroshi [2 ]
Satoh, Kei [1 ]
机构：
[1] Hirosaki Univ, Grad Sch Med, Dept Vasc Biol, Hirosaki, Aomori 0368562, Japan
[2] Hirosaki Univ, Grad Sch Med, Dept Pathol & Biosci, Hirosaki, Aomori 0368562, Japan
[3] Hirosaki Univ, Grad Sch Med, Dept Pediat, Hirosaki, Aomori 0368562, Japan
[4] Hirosaki Univ, Fac Educ, Dept Sch Hlth Sci, Hirosaki, Aomori 0368560, Japan
来源：
IMMUNOLOGY LETTERS | 2011年 / 136卷 / 01期
基金：
日本学术振兴会;
关键词：
Mesangial cells; Poly IC; DEC2; TLR3; IFN-beta; RIG-I; CCL5; DOUBLE-STRANDED-RNA; INDUCIBLE GENE-I; LUPUS NEPHRITIS; URINARY SEDIMENT; MESSENGER-RNA; EXPRESSION; GLOMERULONEPHRITIS; REPRESSION;
D O I：
10.1016/j.imlet.2010.11.009
中图分类号：
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号：
100102 ;
摘要：
Differentiated embryo-chondrocyte 2 (DEC2), a basic-helix-loop-helix transcriptional factor, is involved in various biological reactions by regulating the expression of its target genes. In the present study, we demonstrated DEC2 expression in response to the treatment with polyinosinic-polycytidylic acid (poly IC), an authentic double-stranded RNA, in cultured human mesangial cells. RNA interference against DEC2 enhanced the poly IC-induced expression of IFN-beta and its downstream genes, retinoic acid-inducible gene-I (RIG-I) and CCL5. Knockdown of TLR3 abolished the poly IC-induced DEC2 expression. DEC2 expression may constitute a negative feedback system for the IFN-beta/RIG-I/CCL5 pathway in the glomerulus, which may play a role in controlling protracted inflammatory reactions in the kidney. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：37 / 43
页数：7
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