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LINC01235 通过DNA复制促进克隆进化 授权诱导乳腺癌染色体不稳定性
Qi Zhang1,2, Xuliren Wang1,2, Zhibo Shao1,2
1Department of Breast Surgery, Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Shanghai, 200032, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 14, 2025
概括
一种新的长非编码RNA,LINC01235,通过促进基因组不稳定性,推动乳腺癌中对HER2向疗法的耐药性. 针对LINC01235或ATR提供了一个有前途的策略来克服治疗耐药性.
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:
- HER2阳性乳腺癌的治疗耐药性仍然是一个重大的临床挑战,通常是由瘤异质性和耐药克隆的进化驱动的.
- 识别对HER2向疗法 (如trastuzumab和T-DXd) 的耐药性有针对性的驱动因素,对于改善患者的治疗结果至关重要.
研究的目的:
- 发现HER2阳性乳腺癌中抗HER2治疗耐药性的潜在可向驱动因素.
- 研究LINC01235在抵抗机制中介作用,并探索针对它的治疗策略.
主要方法:
- 利用新辅助剂向治疗队列和患者衍生器官体外治疗模型.
- 研究了LINC01235影响DNA复制,基因组稳定性和基因表达的分子机制.
- 探索了针对LINC01235和相关途径的治疗策略.
主要成果:
- 发现LINC01235显著增强DNA复制许可和染色体不稳定性,促进克隆扩张和对HER2向疗法的耐药性.
- LINC01235调节全球表观遗传修饰 (H3K27ac,H3K9ac,H3K36me3),促进H2A.Z表达,并增加许可因素的DNA可访问性.
- 确定XRCC5是LINC01235介导的复制许可和基因组稳定的关键组成部分.
- 针对LINC01235 (例如,反感性寡核酸) 和ATR抑制剂的治疗策略在克服治疗耐药性方面表现有前途.
结论:
- 在HER2阳性乳腺癌中,LINC01235在驱动抵抗机制方面发挥着关键作用.
- 向LINC01235代表了一种新的治疗途径,以提高治疗疗效和克服HER2阳性乳腺癌的耐药性.
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