缺氧诱导因子HIF1α在化诱导的缺氧期间提高mRNA封闭酶的表达
Safirul Islam1, Chandrama Mukherjee1
1Institute of Health Sciences, Presidency University, Plot No. DG/02/02, Premises No. 14-0358, Action Area 1D, Kolkata 700156, India.
概括
低氧诱导因子 (HIFs) 调节细胞对低氧的反应. 这项研究揭示了细胞质封闭酶 (cCE),在缺氧期间由HIF1α上调,稳定长非编码RNA (lncRNAs).
科学领域:
- 分子生物学分子生物学
- 细胞应激反应的应激反应
- 在RNA生物学,RNA生物学.
背景情况:
- 低氧诱导因子 (HIF) 是细胞适应低氧条件的关键调节者.
- 长非编码RNAs (lncRNAs) 在基因调节和细胞反应中发挥关键作用.
- 细胞质封闭酶 (cCE) 可以保护细胞质中的RNA免受降解.
研究的目的:
- 研究 (CoCl2) 诱导的低氧对细胞质封闭酶 (cCE) 的影响.
- 阐明cCE在低氧条件下调节lncRNA稳定性的作用.
- 为了确定HIF1α和cCE表达和功能在缺氧期间之间的关系.
主要方法:
- 使用化 (CoCl2) 诱导缺氧.
- 染色体免疫沉 (ChIP) 评估HIF1α结合.
- 使用HIF1α抑制剂评估HIF1α依赖性的实验.
- 分析cCE和目标lncRNA的表达和稳定性.
主要成果:
- CoCl2诱导的缺氧显著提高了核和细胞质封闭酶 (CE) 的表达.
- 这种升高取决于缺氧诱导因素1α (HIF1α),由ChIP和抑制剂研究证实.
- 发现细胞质封闭酶 (cCE) 在缺氧期间可以在转录后控制其目标 lncRNAs 的稳定性.
结论:
- 缺氧诱导因子1α (HIF1α) 以一种依赖的方式上调核和细胞质封闭酶 (CE) 表达.
- 细胞质封闭酶 (cCE) 在低氧压力下维持lncRNA稳定性方面发挥着至关重要的作用.
- cCE 作为特定 lncRNA 的后转录调节剂,突出显示了低氧反应中的新机制.
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