一种同胞性方法的途径识别了与吸烟行为相关的非小细胞肺癌中甲基化调节的CSMD1表达标
Jing Jin1, Yasir Rahmatallah2, Horacio Gomez-Acevedo2
1Department of Biostatistics, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas.
概括
这项研究揭示了吸烟诱导的表观遗传变化,特别是DNA甲基化,如何影响非小细胞肺癌 (NSCLC) 的基因表达. 这些发现确定了肺癌患者潜在的预后生物标志物.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症研究 癌症研究
背景情况:
- 烟草吸烟导致非小细胞肺癌 (NSCLC) 的遗传和表观遗传变化.
- 这些分子变化之间的相互作用及其对肺癌发展的影响尚未完全理解.
- 这项研究重点关注与吸烟相关的肺腺癌和肺状细胞癌中的甲基化驱动的基因表达变化.
研究的目的:
- 在NSCLC中调查与吸烟相关的甲基化驱动的基因表达变化.
- 为了确定肺癌的预后生物标志物.
- 为了获得与吸烟相关的肺癌的病因洞察力,使用基于同卵性 (TOH) 的框架.
主要方法:
- 来自"癌症基因组图谱"的全基因组SNP数据,甲基化概况和RNA测序的综合分析.
- 根据吸烟状况,在重叠的TOH和差异甲基化区域 (DMR) 中识别了差异表达的基因.
- 使用多变量Cox比例危险模型评估分子变化和整体存活率之间的关联.
主要成果:
- 与吸烟相关的炎症,氧化应激和免疫调节相关的基因在具有DMR的TOH区域中被丰富.
- 在肺腺癌中,在CSMD1上游确定了一个特定的甲基化部位 (cg08383399),与基因表达相反相关.
- 在TOH-DMR区域内发现了几个与炎症相关的基因的吸烟相关的,亚型特定的表达模式.
结论:
- 综合性分析揭示了与吸烟相关的NSCLC中TOH相关的表观遗传失调.
- 确定了肺癌的候选预后生物标志物.
- 提供了关于吸烟引起的肺癌发生的分子机制的见解.
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