Circ0087385通过上调CYP1A1的调节促进了类烯诱导的肺癌发展的DNA损伤
Nan Zhang1,2, Miaoyun Qiu1,2, Shuwei Yao2
1The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China.
概括
环境中的基因毒性化学物质可以改变表观遗传学. 这项研究揭示了一个圆形的RNA,circ0087385,通过激活CYP1A1,通过激活CYP1A1,促进DNA损伤和肺癌的进展,为化学致癌提供了新的见解.
科学领域:
- 环境健康 环境健康
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 众所周知,环境基因毒性化学物质会诱导表观遗传变化.
- 在化学致癌过程中遗传学和表观遗传学之间的相互作用仍然不完全理解.
- 甲 (BaP) 是一个重要的环境致癌物.
研究的目的:
- 研究表观遗传修饰在化学致癌过程中的作用.
- 为了确定参与酸诱导的肺癌的新型分子参与者.
- 在环境致癌物质的背景下阐明遗传学和表观遗传学之间的相互作用.
主要方法:
- 使用酸甲 (BaP) 构建一个体外人类肺癌发生模型 (16HBE-T).
- 一个新的圆形RNA的识别和特征,circ0087385.5.
- 在细胞系,组织和血清外体内circ0087385表达的分析.
- 研究circ0087385在DNA损伤,细胞循环,增殖和亡中的作用.
- 评估circ0087385对细胞染色体P450 1A1 (CYP1A1) 表达和BaP代谢的影响.
主要成果:
- 一种新型的循环RNA,circ0087385,被确定并发现在肺癌模型,组织和患者血清外体中过度表达.
- 在BaP暴露的背景下,Upregulated circ0087385促进了DNA损伤,影响了细胞周期,增殖和亡.
- 过度表达circ0087385增强了CYP1A1的表达,增加了BaP的代谢激活到其最终的致癌物,BPDE.
- 与circ0087385或CYP1A1的干扰降低了BPDE水平和BPDE-DNA添加物,部分扭转了BaP诱导的DNA损伤.
结论:
- Circ0087385在烯诱导的肺癌发生的早期阶段起着至关重要的作用.
- circ0087385与CYP1A1之间的相互作用对于BaP的代谢激活和随后的DNA损伤至关重要.
- 这些发现为化学致癌症的潜在表观遗传和遗传机制提供了新的见解,并突出了circ0087385作为潜在的生物标志物或治疗点.
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