Abstract
Objective To observe effect of Trim28 (ser473) phosphorylation on viability of hepatocellular carcinoma (HCC) cells during DNA damage. Methods To divide Hepg2 cells into 2 groups as SB203580+ UV group and UV group. Hepg2 cells were modeled for DNA damage by UV (Ultraviolet) irradiation. SB203580+ UV group was treated with Trim28 phosphorylation inhibitor SB203580 after UV irradiation. Expression of Trim28 and phosphorylation-Trim28 ser473 (P-Trim28 ser473)were detected by westernblot experiment. The viability of Hepg2 cells were observed by methyl thiazol tetrazolium (MTT) experiment. Results Compared with UV group (0.94±0.13), the expression value of Trim28 in SB203580+ UV group had no significant difference (t=-0.190, P>0.05). Value of phosphorylation-Trim28 in SB203580+ UV group (0.32±0.04) was obviously lower than UV group (0.72±0.05), the difference had statistical meaning (t=8.500, P<0.05); The 24, 48 and 72 hours after UV irradiation, the cell survive rate of UV group [(95±7)%, (62±10)%, (35±6)%] is higher than SB203580+ UV group [(85±7)%, (37±4)%, (20±3)%]. The difference has statistical meaning (t=-2.326, -5.212, -4.577, P<0.05). Conclusion The viability of HCC cells during DNA damaged can be reduced by inhibition for Trim28 phosphorylation. Key words: Trim28; Phosphorylation; Cell survival
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have