代谢开关调节血统可塑性,并在三阴性乳腺癌中诱导合成致死性
Yingsheng Zhang1, Meng-Ju Wu2, Wan-Chi Lu3
1Department of Medicine and Biological Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Cedars-Sinai Samuel Oschin Comprehensive Cancer Institute, Los Angeles, CA 90048, USA.
Cell metabolism
|January 3, 2024
概括
三阴性乳腺癌 (TNBC) 转换为脂肪酸氧化 (FAO) 当糖解低. 针对EZH2和FAO一起,在TNBC中产生合成致命性.
科学领域:
- 在瘤学瘤学.
- 癌症新陈代谢 癌症新陈代谢
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 代谢重编程对于癌症的进展至关重要.
- 维持三阴性乳腺癌 (TNBC) 增长的机制尽管低糖解还不清楚.
- 酸盐激酶M2 (PKM2) 缺乏和瘤糖解衰竭在TNBC中是一个挑战.
研究的目的:
- 阐明使TNBC在糖溶性缺乏下生长的代谢适应.
- 确定PKM2,表观遗传学和TNBC中的代谢切换之间的分子机制.
- 探索针对TNBC代谢漏洞的潜在治疗策略.
主要方法:
- 研究了TNBC细胞中缺乏糖解的代谢途径.
- 研究了PKM2和EZH2.2之间的相互作用.
- 分析了卡尼丁载体SLC16A9.9的表观遗传调节.
- 评估了PKM2抑制对SLC16A9表达和细胞代谢的影响.
- 在TNBC模型中评估了EZH2和FAO双重向的有效性.
主要成果:
- 当糖解不足时,TNBC细胞从糖解转换为脂肪酸β-氧化 (FAO),以维持生长.
- PKM2 直接与 EZH2 相互作用,以表观遗传沉默卡尼丁载体 SLC16A9.9.
- 抑制PKM2会破坏EZH2对SLC16A9的招募,从而导致其去抑制和增加卡尼丁的流入.
- 这种新陈代谢重编程将TNBC细胞转移到一个依赖于粮农组织的,类似于光的状态.
- 针对EZH2和FAO的双重向在TNBC中显示出强烈的合成致死性.
结论:
- 一个新的代谢切换从糖溶解到粮农组织燃料TNBC在糖溶性压力下的增长.
- PKM2-EZH2-SLC16A9轴介导这种代谢适应和血统可塑性.
- 同时针对EZH2和FAO,为TNBC治疗提供了一个有希望的合成致命策略.
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