Thymosin β4 inhibits PDGF-BB induced activation, proliferation, and migration of human hepatic stellate cells via its actin-binding domain.
Thymosin β4 inhibits PDGF-BB induced activation, proliferation, and migration of human hepatic stellate cells via its actin-binding domain.
复制标题
DOI:
10.1080/14712598.2018.1478961
复制
发表时间:
2018-07
影响因子:
4.6
通讯作者:
Rojkind M
中科院分区:
文献类型:
--
作者:
Shah R;Reyes-Gordillo K;Rojkind M
Hepatic stellate cells (HSC) trans-differentiation is central to the development of liver fibrosis, marked by the expression of pro-fibrogenic genes and the proliferation and migration of activated HSC. Therefore, preventing and/or reverting the activation, proliferation, and migration of HSC may lead to new therapies for treating fibrosis/cirrhosis. Thymosin β4 (Tβ4) inhibits PDGF-BB-induced fibrogenesis, proliferation and migration of HSC by blocking Akt phosphorylation. Here, we utilized Tβ4-derived peptides: amino-terminal-Ac-SDKPDMAEIEKFDKS (1–15aa) and actin-binding-LKKTETQ (17–23aa) to investigate the molecular mechanisms in the anti-fibrogenic actions of Tβ4. We used RT-PCR, Western blot, and proliferation and migration assays in early passages of human HSC cultures treated with PDGF-BB and/or Tβ4 peptides. We showed that 17–23aa but not 1–15aa inhibited PDGF-BB-dependent up-regulation of PDGFβ receptor, α-SMA, and collagen 1. It also blunted the phosphorylation of Akt at T 308 and S473, resulting in the inhibition of phosphorylation of PRAS40, and HSC proliferation and migration. Interestingly, 1–15aa blocked Akt phosphorylation at S473, but not T308 by inhibiting mTOR phosphorylation, thus, it did not have any effect on HSC proliferation and migration. These findings suggest that while 1–15aa has a minor effect on Akt phosphorylation, the anti-fibrogenic actions of Tβ4 are exerted via 17–23aa.
登录
查看更多内容
DOI:
10.4081/ejh.2011.e25
发表时间:
2011
期刊:
European journal of histochemistry : EJH
影响因子:
--
作者:
Nemolato S;Van Eyken P;Cabras T;Cau F;Fanari MU;Locci A;Fanni D;Gerosa C;Messana I;Castagnola M;Faa G
通讯作者:
Faa G
影响因子:
5
作者:
Borkham-Kamphorst, E;Herrmann, J;Weiskirchen, R
通讯作者:
Weiskirchen, R
影响因子:
--
作者:
Rudnick, David A
通讯作者:
Rudnick, David A
DOI:
10.1196/annals.1415.035
发表时间:
2007-01-01
期刊:
THYMOSINS IN HEALTH AND DISEASE: FIRST INTERNATIONAL SYMPOSIUM
影响因子:
--
作者:
Barnaeva, Elena;Nadezhda, Agladze;Rojkind, Marcos
通讯作者:
Rojkind, Marcos
影响因子:
--
作者:
Xiao, Yongtao;Qu, Chunying;Chen, Yingwei
通讯作者:
Chen, Yingwei