RESUMO
As a non-coding single-strand small RNA,microRNA (miRNA) plays an important role in post-translational regulation.Its role in tumor formation has become a study hotspot.A large body of studies in dicate that the abnormal expression of miRNA involves in the occurrence and development of liver cancer,which can be used for the diagnosis,therapy and prognosis evaluation of liver cancer.In-depth exploration of the molecular mechanism of miRNA and the relationship between miRNA and liver cancer could provide novel ideas and methods for the therapy and prevention of liver cancer.
RESUMO
This study aims to investigate the effect of total flavones of Fructus Chorspondiatis (TFFC) on the mRNA and protein expression of collagen type I and III of rat cardiac fibroblasts (CFs) induced by angiotensin II (Ang II), and explore its anti-myocardial fibrosis molecular mechanism. Neonatal rat CFs were prepared from Sprague-Dawley rats (1-3 d after birth). The expression of collagen type I and III mRNA and protein were measured by RT-PCR and Western blotting, respectively. The study showed that stimulation of neonatal rat CFs with 100 nmol.L-1 of Ang II for 72 h resulted in a significant increase of the expression of collagen type I and III mRNA and protein. The changes on the expression level were blocked by TFFC. The results demonstrated that TFFC can inhibit myocardial fibrosis induced by Ang II in rats, which is probably associated with the collagen type I and III mRNA and protein levels up-regulated by Ang II, and TFFC was shown to decrease the expression levels of collagen type I and III mRNA and protein.
