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长链脂肪酸改变乳腺癌细胞中的雌激素受体表达

Ruiko Ogata¹, Yi Luo¹, Rina Fujiwara-Tani¹

¹Department of Molecular Pathology, Nara Medical University School of Medicine, Kashihara 634-8521, Japan.

International journal of molecular sciences

|July 29, 2025

概括

长链脂肪酸通过改变雌激素受体 (ER) 表达影响乳腺癌. 特定的脂肪酸,如油酸,在某些细胞中降低了ER,而棕酸则在其他细胞中增加了ER,影响了治疗反应.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
营养科学营养科学

背景情况:

长链脂肪酸 (LCFA) 是癌症代谢的公认调节剂.
乳腺癌 (BCA) 中LCFAs对激素受体表达的影响尚不清楚.

研究的目的:

研究五种LCFA对两个不同的乳腺癌细胞系中的激素受体表达的影响.
阐明LCFA调节雌激素受体α (ERα) 表达和信号的机制.

主要方法:

用五种LCFA对MCF7 (光线) 和MDA-MB-231 (三阴) 乳腺癌细胞进行治疗:酸,油酸,酸,棕酸和α-酸.
评估细胞活力,线粒体功能,反应性氧物种的产生,以及代谢转变.
对雌激素受体α (ERα) mRNA和蛋白质水平的分析.
微RNA分析,以确定调节性微RNAs.

主要成果:

所有测试的LCFA都以剂量依赖的方式降低了细胞活力和线粒体功能.
油酸 (OA) 降低了MCF7细胞中的ERα mRNA和蛋白质,降低了对雌二醇和他莫西芬的反应能力.
棕酸 (PA) 在MB231细胞中增加了ERα蛋白,尽管ER信号保持不活跃.
在MCF7中,OA上调了miR-22和miR-221,而在MB231中,PA增加了miR-34a,与ERα调节相关.

结论:

特定的LCFA通过表观遗传和后转录机制在乳腺癌细胞中差异调节ERα表达和信号.
饮食中的脂质可以通过调节核受体信号通路来影响乳腺癌的治疗疗效.
这些发现为饮食脂质,激素受体状态和乳腺癌进展之间的相互作用提供了新的见解.

关键词:

乳腺癌乳腺癌乳腺癌雌激素受体的受体是雌激素受体.长链脂肪酸是一种长链脂肪酸.三重阴性乳腺癌是什么

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