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Updated: Feb 7, 2026

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转移性前列腺癌的基因组特征和结构变异
David A Quigley1, Ha X Dang2, Shuang G Zhao3
1Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco (UCSF), San Francisco, CA, USA; Department of Epidemiology and Biostatistics, UCSF, San Francisco, CA, USA.
Cell
|July 24, 2018
概括
转移性前列腺癌的全基因组结构变异揭示了疾病进展的新驱动因素. 这些包括在雄激素受体 (AR) 附近的增强剂放大,以及特定变体与DNA修复缺陷之间的联系.
科学领域:
- 基因组学
- 癌症生物学
- 分子瘤学
背景情况:
- 蛋白质编码区域的突变在癌症中得到了很好的研究.
- 转移性前列腺癌中的全基因组结构变异 (SV) 定义不佳.
- 外基因组测序错过了影响非编码的监管元素的 SV.
研究的目的:
- 鉴定和描述割抵抗性前列腺癌 (CRPC) 转移中的全基因组结构变异.
- 了解SVs在调节关键癌症基因和途径中的作用.
- 探索SVs和CRPC中的DNA修复缺陷之间的病因联系.
主要方法:
- 101个CRPC转移的深度整基因组和全转录组测序.
- 在109X/38X时分析瘤/正常覆盖面.
- 识别和分类各种SV,包括放大,并行重复,删除和重新排列.
主要成果:
- 鉴定出改变关键瘤发生和进展调节者的SV,但被外体测序遗漏.
- 在81%的患者中观察到雄激素受体 (AR) 上游的跨基因增强器区域的放大,与AR表达的增加相关.
- 在MYC附近和参与MYC调节的lncRNA中发现了并列重复热点.
- 特定的SV类与不同的DNA修复缺陷相关联:CDK12突变与并联重复,TP53失活与重排/染色体,以及BRCA2失活与删除.
结论:
- 在转移性前列腺癌中,SVs在调节关键基因方面发挥着重要作用.
- 增强剂放大和其他SVs有助于AR失调和疾病进展.
- 特定的DNA修复途径缺陷与CRPC中不同类型的结构基因组变化有关.
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