脂肪酸合成酶衍生的脂质储存支持乳腺癌转移
Chaylen Andolino1, Eylem Kulkoyluoglu Cotul1, Zilin Xianyu1
1Purdue University West Lafayette.
Research square
|December 16, 2024
概括
转移性乳腺癌细胞通过增加脂肪酸合成和氧化来积累脂质. 抑制脂肪酸合成酶 (FASN) 减少转移,突出显示FASN是乳腺癌的治疗点.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 代谢过程中的代谢.
背景情况:
- 脂质积累与乳腺癌转移有关.
- 转移中脂质代谢的机制尚未完全理解.
研究的目的:
- 为了研究转移性与非转移性乳腺癌细胞中的脂质代谢变化.
- 描述脂质滴和脂肪酸合成在乳腺癌进展和转移中的作用.
主要方法:
- 使用14C标记的棕酸盐来追踪脂肪酸的吸收和氧化.
- 采用同位素追踪来分析来自葡萄糖和谷氨酸的新型脂质生成.
- 量化脂肪酸合成酶 (FASN) 水平和抑制的FASN在遗传和药理上.
- 进行了全球蛋白质组分析,以确定受FASN抑制影响的蛋白质.
主要成果:
- 转移性细胞积累更多的脂质,并氧化内源性脂肪酸,尽管类似的palmitate吸收.
- 转移性细胞表现出增加的de novo脂质生成,将更多的葡萄糖和谷氨酸转化为酸盐,并显示出更高的FASN水平.
- 抑制FASN降低了乳腺癌细胞迁移,瘤的存活率和体内转移.
- 抑制FASN降低了参与转移细胞中的蛋白质酶功能,细胞循环和细胞内运输的蛋白质.
结论:
- 乳腺癌转移通过增加新的脂质生成积累脂肪酸,并将它们储存在脂质滴中.
- 脂肪酸氧化这些储存的燃料转移性进展.
- 准FASN是一种有前途的治疗策略,可以抑制乳腺癌转移.
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