期刊
ONCOTARGET
卷 6, 期 11, 页码 9409-9419出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.3352
关键词
hypoxia; NF-kB; HIF-1; miRNA
资金
- National Natural Science Foundation of China [81472435, 81222031]
- National Key Basic Research Program of China (973 program) [2010CB529404, 2012CB526603]
Regulations between NF-kappa B and HIF-1 have not been adequately addressed in previous research. Here, we report that hypoxia increased NF-kappa B in hepatocellular carcinoma cells. The HIF-1 protein level was rapidly induced by protein stabilization (by 2 hours) and then moderately decreased, whereas mRNA levels were reciprocally increased. We also found that NF-kappa B p50 and p65 (RelA), but not c-Rel, bound the HIF-1a promoter, thus increasing its transcription. In contrast, miR-199a-5p and miR-93, c-Rel downstream targets, decreased HIF-1a at both the mRNA and protein levels. Dicer1, a key enzyme in miRNA biogenesis, was decreased by acute hypoxia but was later increased by HIF-1, rather than by the above-mentioned NF-kappa B subunits. Thus, NF-kappa B both positively and negatively fine-tuned HIF-1 in hypoxic hepatocarcinoma cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据