在癌症中杜申肌肉衰竭基因参与的统一模型:依赖环境的瘤抑制和致癌性
Lee Machado1, Leanne Jones1,2, Sonika Divakar1
1Centre for Physical Activity and Life Sciences, University of Northampton, UK.
FEBS open bio
|August 20, 2025
概括
杜申肌基因 (DMD) 在癌症中具有双重作用,在侵袭性癌症中起瘤抑制作用,在侵袭性癌症中起瘤基因作用. 这种取决于情境的功能对各种瘤类型的患者生存结果产生影响.
科学领域:
- 癌症学
- 遗传学
- 分子生物学
背景情况:
- 杜申肌肉衰竭基因 (DMD) 与癌症发展有关,但其确切作用尚不清楚.
- 目前关于DMD对癌症存活率的影响的证据不一致,需要进一步调查.
研究的目的:
- 综合分析DMD基因表达对33种不同癌症的生存结果的全球影响.
- 阐明DMD在瘤发生中的情境依赖作用,区分瘤抑制和瘤功能.
主要方法:
- 利用癌症基因组图谱 (TCGA) 的大量RNA测序数据进行全球分析.
- 使用卡普兰-梅尔分析和考克斯比例危险建模来评估生存关联.
- 进行路径分析和层次聚类以探索潜在机制.
主要成果:
- 在9种癌症类型中,DMD表达与生存有显著的相关性 (Bonferroni校正,α=0. 0015).
- 在某些癌症中,高DMD表达与生存率的提高,而在其他癌症中则与结果的恶化有关.
- 杜申肌肉衰竭基因 (DMD) 转录Dp71ab反映了DMD总趋势,突出了具有相反生存关联的不同瘤群体.
结论:
- 在所有癌症中,DMD作为瘤基因或瘤抑制剂的功能并不均.
- 提出了一个上下文依赖的双重模型:高DMD表达在侵袭性癌症中具有瘤抑制作用,而在不那么侵袭性瘤中则具有瘤性作用.
- DMD的不同效应可能与参与信号传递和粘附的特定基蛋白复合体 (DAPC) 组成部分有关.
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