循环RNAcircNIPBL调节了NNK诱导的支气管上皮癌发生的TP53-H179R突变
Yufei Liu1, Shusen Fang2, Tianshu Lin2
1The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China.
Environment international
|June 22, 2024
概括
暴露在致癌物NNK下调 circNIPBL,一个圆形RNA,促进癌症生长和TP53突变. 这突显了表观遗传变化和化学致癌过程中的遗传变化之间的联系.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 环境中的致癌物质对癌症的发展有着显著的贡献.
- 遗传和表观遗传变化在致癌过程中至关重要,但它们的相互作用尚未得到充分研究.
- 烟草中的特定致癌物,如NNK,是肺癌的主要风险因素.
研究的目的:
- 为了研究NNK暴露对支气管上皮细胞的影响.
- 阐明 circNIPBL 和 TP53 突变在 NNK 诱导的致癌过程中的作用.
- 探索表观遗传调节和化学致癌的遗传变化之间的关系.
主要方法:
- 支气管上皮细胞对NNK的持续暴露.
- 对circNIPBL表达和TP53变体的分析.
- 对细胞增殖,转移和瘤形成的评估.
- 研究circNIPBL与HSP90α和AHR核转移的相互作用.
主要成果:
- 暴露于NNK导致恶性转变和circNIPBL的下调.
- 一个单核酸变体TP53-H179R,在NNK诱导的致癌过程中积累.
- 减少circNIPBL表达增强了癌细胞的扩散,转移和瘤的形成.
- circNIPBL通过 HSP90α 调节 AHR 核转位,影响 NNK 诱导的致癌.
结论:
- 循环NIPBL下调和TP53-H179R积累是NNK诱导致癌的关键事件.
- 该circNIPBL-HSP90α-AHR通路提供了一种新的机制,将表观遗传和遗传变化与化学致癌相关联.
- 这项研究为癌症病因学提供了新的见解,强调了遗传和表观遗传因素之间的相互作用.
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