优化精确医学乳腺癌大脑转移与功能药物反应评估
Aki Morikawa1, Jinju Li2, Peter Ulintz1
1Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.
Cancer research communications
|June 28, 2023
概括
需要针对乳腺癌脑转移 (BCBM) 的新疗法. 来自患者的异种移植揭示了保留的分子变化和对特定抑制剂的敏感性,支持BCBM的精密医学方法.
科学领域:
- 在瘤学瘤学.
- 翻译研究是翻译研究.
- 基因组学就是基因组学.
背景情况:
- 大脑转移 (BM) 代表了癌症治疗中的重大未满足需求.
- 骨髓瘤的独特分子特征可能提供新的治疗点.
- 了解药物敏感性和分子概况对于优先考虑治疗至关重要.
研究的目的:
- 评估乳腺癌脑转移 (BCBM) 和匹配的原发性瘤的分子概况.
- 从BCBM建立患者衍生异种移植 (PDX) 用于药物查.
- 在BCBM模型中识别潜在的治疗点并评估药物疗效.
主要方法:
- 对12个BCBM和匹配的初级瘤进行分子分析.
- 建立了六种新的BCBM衍生PDX模型.
- 对PDX模型的药物选与350多种药物的小组进行对比.
- 保存和差异分子变化的分析,包括PI3K路径.
主要成果:
- 在BCBM和匹配的原发性瘤之间,分子变化在很大程度上保持不变.
- 在免疫相关和代谢途径中观察到显著的差异表达.
- 在PDX模型中,PI3K路径的改变对药物疗效的预测能力最强.
- BCBM PDXs对基因素脱乙酶和蛋白质酶抑制剂表现出高灵敏度.
结论:
- BCBM PDXs有效地捕获源瘤中可向的分子变化.
- 功能精准医学策略可能会扩大BCBM的治疗选择.
- 基因组分析与功能评估相结合,可以改善药物开发和BCBM的生物标志物评估.
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