在ER+乳腺癌中,ESR1激活突变赋予了代谢脆弱性
Francesca Bonechi1, Marina Bacci2, Nicla Lorito1
1University of Florence, Florence, Please select one, Italy.
Cancer research
|November 7, 2025
概括
乳腺癌中的雌激素受体-1 (ESR1) 突变会在脂质代谢中产生脆弱性,使瘤对铁亡敏感. 将铁致死诱导剂与内分泌疗法的结合显示出治疗耐药ER+乳腺癌的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢途径 代谢途径
背景情况:
- 内分泌疗法 (ET) 是对雌激素受体阳性 (ER +) 乳腺癌的标准.
- 雌激素受体-1 (ESR1) 突变最初很少见,但在耐ET乳腺癌中很常见.
研究的目的:
- 研究ESR1突变对乳腺癌脂质代谢的影响.
- 确定针对ET耐药ER+乳腺癌的新疗法策略.
主要方法:
- 在临床前模型和患者衍生ER+乳腺癌中分析ESR1突变.
- 评估脂质新陈代谢,-CoA合成酶长链家族4 (ACSL4) 成员的表达,以及铁化敏感性.
- 用铁灭症诱导剂和选择性雌激素受体降解剂 (SERDs) 进行组合治疗的评估.
主要成果:
- ESR1突变诱导构成性雌激素受体 (ER) 激活,驱动异常的脂质生物发生并增加ACSL4表达.
- ESR1突变使ER+乳腺癌细胞对ferroptosis敏感,克服了固有的抵抗力.
- 铁灭诱导剂在临床前模型和患者衍生材料中增强了富尔韦斯特兰特和埃拉塞斯特兰特的疗效.
结论:
- ESR1突变在脂质新陈代谢中产生脆弱性,使ER+乳腺癌易受铁亡.
- 用铁灭诱导剂和SERDs进行组合疗法是对ET抗性乳腺癌的有前途的策略.
- ACSL4作为一种潜在的生物标志物,用于识别ER+乳腺癌对ferroptosis诱导敏感.
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