Thrombospondin-1 is the key activator of TGF-beta1 in human mesangial cells exposed to high glucose.
Thrombospondin-1 is the key activator of TGF-beta1 in human mesangial cells exposed to high glucose.
复制标题
Thrombospondin-1 是暴露于高葡萄糖的人系膜细胞中 TGF-β1 的关键激活剂。
DOI:
--
复制
发表时间:
2001
影响因子:
13.6
通讯作者:
R. Mason
中科院分区:
文献类型:
--
作者:
N. Yevdokimova;N. Wahab;R. Mason
Elevated levels of transforming growth factor-beta1 (TGF-beta1) are synthesized by human mesangial cells that are cultured in medium that contains high concentrations of glucose and mediate increased synthesis of fibronectin (FN), plasminogen activator inhibitor-1 (PAI-1), and changes in the expression of other genes. TGF-beta1 is synthesized as a latent complex. Previous work indicated that high-glucose conditions also upregulate expression of thrombospondin-1 (TSP-1), a potential activator of latent TGF-beta1. With the use of the synthetic peptide GGWSHW, an inhibitor of the TSP-1 activation mechanism, endogenous TSP-1 is shown to be responsible for converting high levels of latent TGF-beta1 to bioactive growth factor over 3 wk of exposure of mesangial cells to 30 mM D-glucose. Peptide inhibition of TGF-beta1 activation by TSP-1 in high-glucose conditions completely suppressed increases in FN and PAI-1 expression. Treating mesangial cells maintained in high glucose with a TSP-1 antisense oligonucleotide reduced TSP-1 expression to levels found in 4 mM D-glucose cultures, prevented TGF-beta1 activation, and normalized expression of FN.
登录
查看更多内容
DOI:
10.1016/s0021-9258(18)48258-0
发表时间:
1987-05
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Ignotz;T. Endo;J. Massagu
通讯作者:
R. Ignotz;T. Endo;J. Massagu
DOI:
10.1042/bj2660537
发表时间:
1990
期刊:
The Biochemical journal
影响因子:
--
作者:
Howe,PH;Cunningham,MR;Leof,EB
通讯作者:
Leof,EB
影响因子:
--
作者:
M. Barcellos-Hoff;T. Dix
通讯作者:
M. Barcellos-Hoff;T. Dix
DOI:
10.1016/s0021-9258(18)54461-6
发表时间:
1991-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Keeton;S. Curriden;A. J. Zonneveld;D. Loskutoff
通讯作者:
M. Keeton;S. Curriden;A. J. Zonneveld;D. Loskutoff
影响因子:
19.6
作者:
Hoffman, BB;Sharma, K;Ziyadeh, FN
通讯作者:
Ziyadeh, FN