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SRSF2 directly inhibits intron splicing to suppresses cassette exon inclusion
( Heegyum Moon ),( Sunghee Cho ),( Tiing Jen Loh ),( Ha Na Jang ),( Yongchao Liu ),( Namjeong Choi ),( Jagyeong Oh ),( Jiyeon Ha ),( Jianhua Zhou ),( Sungchan Cho ),( Dong-eun Kim ),( Michael B. Ye ) 생화학분자생물학회(구 한국생화학분자생물학회) 2017 BMB Reports Vol.50 No.8
SRSF2, a Serine-Arginine rich (SR) protein, is a splicing activator that mediates exon inclusion and exclusion events equally well. Here we show SRSF2 directly suppresses intron splicing to suppress cassette exon inclusion in SMN pre-mRNA. Through a serial mutagenesis, we demonstrate that a 10 nt RNA sequence surrounding the branch-point (BP), is important for SRSF2-mediated inhibition of cassette exon inclusion through directly interacting with SRSF2. We conclude that SRSF2 inhibits intron splicing to promote exon exclusion. [BMB Reports 2017; 50(8): 423-428]
Duan, Wei-Hong,Zhu, Zhen-Yu,Liu, Jun-Gui,Dong, Mao-Sheng,Chen, Jun-Zhou,Liu, Quan-Dda,Xie, Yu,Sun, Ti-Ye,Gao, Ze-Feng,Zhou, Ning-Xin Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8
Purpose: Numerous studies have evaluated the association between XRCC1 Arg399Gln gene polymorphism and hepatocellular carcinoma risk in the Chinese Han population. However, the results have been inconsistent. We therefore here examined whether the XRCC1 Arg399Gln gene polymorphism confers hepatocellular carcinoma risk by conducting a meta-analysis. Methods: PubMed, Google scholar and China National Knowledge Infrastructure databases were searched for eligible articles in English and Chinese that were published before April 2012. Results: 6 studies involving 1,246 patients with hepatocellular carcinoma and 1,953 controls were included. The association between XRCC1 Arg399Gln gene polymorphism and hepatocellular carcinoma in the Chinese Han population was significant under GG vs AA (OR = 1.48, 95% CI = 1.13 to 1.94). Limiting the analysis to the studies with controls in the Hardy-Weinberg equilibrium, the results were persistent and robust. Conclusions: In the Chinese Han population, the XRCC1 Arg399Gln gene polymorphism is associated with an increased hepatocellular carcinoma risk.