CircGNAO1加强其宿主基因GNAO1的表达,以抑制肝癌发生
Hongwei He1, Qing Zhang2, Qiyun Gu1
1Department of Hepatobiliary Surgery, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, 201599, China.
Heliyon
|July 11, 2024
概括
循环RNA GNAO1 (circGNAO1) 在肝细胞癌 (HCC) 中是下调的. 过度表达circGNAO1通过上调其宿主基因,瓜核酸结合蛋白,α激活活性聚O (GNAO1),抑制癌症发展来抑制HCC的进展.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 肝细胞癌 (HCC) 是一种常见的初级肝癌.
- 关氨酸核酸结合蛋白,α激活活性聚O (GNAO1) 在HCC中表达不充分.
- 在HCC中GNAO1衍生的圆形RNA (circGNAO1) 的作用尚不清楚.
研究的目的:
- 为了研究circGNAO1在HCC中的表达和功能.
- 阐明circGNAO1在HCC进展中的作用背后的分子机制.
- 探索circGNAO1,GNAO1和DNA甲基转移酶1 (DNMT1) 之间的关系.
主要方法:
- 实时定量聚合酶连锁反应 (RT-qPCR) 和西布洛特用于基因和蛋白质表达分析.
- 功能性测试用于评估HCC细胞增殖,细胞周期和衰老.
- 机制测试检查circGNAO1,GNAO1和DNMT1之间的相互作用,包括二硫酸盐测序PCR (BSP) 用于甲基化分析.
主要成果:
- 在HCC组织中,CircGNAO1被下调,并且与GNAO1表达呈正相关.
- 过度表达circGNAO1抑制HCC细胞增殖,诱导细胞循环停止,并促进细胞衰老.
- CircGNAO1通过隔离DNMT1来增强GNAO1转录,从而导致HCC细胞GNAO1表达的增加.
结论:
- 在HCC中,circGNAO1充当瘤抑制剂.
- 循环GNAO1上调调节GNAO1的表达,从而抑制肝癌发生.
- CircGNAO1可能成为HCC的潜在治疗点.
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