单细胞和空间转录组学揭示了乳腺癌中P4HA2介导的放射治疗耐药性机制
Huimin Li1,2, Junzhi Liu2, Yuheng Jiao3
1The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China.
Theranostics
|December 22, 2025
概括
这项研究确定了抗辐射治疗 (RR) 基因组和prolyl-4-hydroxylase亚单元α2 (P4HA2) 作为乳腺癌治疗失败的关键驱动因素,提供了新的治疗标和预后工具.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 放射治疗耐药性是乳腺癌治疗的一个重大挑战.
- 这种抵抗的分子驱动因素和细胞机制尚未完全阐明.
研究的目的:
- 为了确定关键的基因和与乳腺癌中放射治疗耐药性相关的细胞群.
- 根据放射治疗耐药性,开发一个预后模型来对患者进行分层.
- 为了研究 Prolyl 4-Hydroxylase Subunit Alpha 2 (P4HA2) 在乳腺癌放射治疗耐药性的作用.
主要方法:
- 使用TCGA-BRCA和GSE120798队列来识别放射治疗耐药性 (RR) 基因组.
- 采用单细胞和空间转录组学来表征高RR的上皮细胞 (RRhighepi).
- 使用机器学习和门德尔随机化开发了一个预后模型 (SSRR);在体外验证了P4HA2功能.
主要成果:
- RR基因面板和RRhighepi细胞显示细胞循环途径的丰富,干度升高和DNA修复的增强.
- 该SSRR模型有效地将患者分为两层,分为存活率较低的高风险组.
- 降低P4HA2抑制了癌细胞的扩散和入侵,并与放射治疗协同作用,以减少干细胞和DNA损伤.
结论:
- 多omics分析揭示了乳腺癌中放射治疗耐药性的机械模型.
- P4HA2是一种潜在的治疗点,可以使乳腺癌对放射治疗产生敏感性.
- RR基因组和SSRR模型提供了对抗性机制和患者分层的见解.
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