黑色素增强了Everolimus在乳腺癌的疗效,通过抑制mTOR通路的激活,促进细胞亡和线粒体功能
Şeyma Demirkesen1, Yakup İriağaç2, Erdoğan Selçuk Şeber3
1Department of Molecular Biology and Genetics, Faculty of Science and Arts, Namık Kemal University, Tekirdağ, Turkey.
BMC pharmacology & toxicology
|May 12, 2025
概括
黑素通过抑制关键生长途径和促进细胞死亡来增强激素受体阳性乳腺癌中的everolimus疗效. 这种组合疗法显示出克服治疗耐药性和改善治疗结果的希望.
科学领域:
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 在乳腺癌治疗中,Everolimus针对PI3K/AKT/mTOR通路,但其有效性受到反机制的限制,导致耐药性.
- 黑氨酸是一种天然的瘤抑制剂,具有抗氧化和抗炎性质,可能在乳腺癌治疗中起到辅助作用.
- 黑色素可能通过抑制mTOR和Akt通路来克服everolimus耐药性,但它对激素受体阳性乳腺癌的联合作用尚未被探索.
研究的目的:
- 为了研究黑激素和恒胺对激素受体阳性乳腺癌的联合治疗效果.
- 评估这种组合对MCF-7细胞细胞活力,细胞亡,自和线粒体功能的影响.
主要方法:
- MCF-7细胞被分为四组:对照组,单独的黑色素,单独的黑色素,以及黑色素和黑色素的组合.
- 评估了细胞活力,并测量了亡,自活化 (LC3蛋白表达和点点) 和线粒体功能.
主要成果:
- 黑激素和常胺的组合显著抑制了mTOR下游作用因子 (4E-BP1和p70S6K) 的酸化,减少了细胞生长.
- 同时使用增加了细胞亡,导致G1次阶段积累,并显示了自活性.
- 线粒体功能得到保存,没有质子泄漏或脱,并且恢复了everolimus诱导的呼吸抑制.
结论:
- 黑素通过抑制mTOR下游信号传递,促进细胞灭绝和激活自增强了everolimus的有效性.
- 这种组合改善了线粒体呼吸,并减少了MCF-7乳腺癌细胞的生长.
- 黑色素显示出作为治疗激素受体阳性乳腺癌的埃弗罗利斯辅助剂的潜力.
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