Recoding RNA editing of AZIN1 predisposes to hepatocellular carcinoma.
Recoding RNA editing of AZIN1 predisposes to hepatocellular carcinoma.
复制标题
AZIN1 的重新编码 RNA 编辑易诱发肝细胞癌。
作者:
Better understanding of human hepatocellular carcinoma (HCC) pathogenesis at the molecular level will facilitate the discovery of tumor initiating events. Herein, transcriptome sequencing revealed that adenosine (A)-to-inosine (I) RNA editing of antizyme inhibitor 1 (AZIN1) displays a high modification rate in HCC specimens. A-to-I editing of AZIN1 transcripts is specifically regulated by adenosine deaminase acting on RNA-1 (ADAR1). The serine (S) → glycine (G) substitution at residue 367, located in β-strand 15 (β15), predicted a conformational change, induced a cytoplasmic-to-nuclear translocation, and conferred “gain-of-function” phenotypes manifested by augmented tumor initiating potential and more aggressive behavior. Compared with wild-type AZIN1 protein, the edited form possesses stronger affinity to antizyme, and the resultant higher protein stability promotes cell proliferation via the neutralization of antizyme-mediated degradation of ornithine decarboxylase (ODC) and cyclin D1 (CCND1). Collectively, A-to-I RNA editing of AZIN1 may be a potential driver in the pathogenesis of human cancers, particularly HCC.
登录
查看更多内容
影响因子:
16.6
作者:
Nishikura K
通讯作者:
Nishikura K
影响因子:
254.7
作者:
Parkin, DM;Bray, F;Pisani, P
通讯作者:
Pisani, P
影响因子:
4.8
作者:
Cenci, Caterina;Barzotti, Rita;Gallo, Angela
通讯作者:
Gallo, Angela
影响因子:
4.1
作者:
FUJITA, K;MURAKAMI, Y;HAYASHI, S
通讯作者:
HAYASHI, S
DOI:
10.1073/pnas.93.5.1875
发表时间:
1996-03-05
影响因子:
11.1
作者:
Herb, A;Higuchi, M;Seeburg, PH
通讯作者:
Seeburg, PH