前新生细胞从最初就切换到华堡代谢,暴露了针对性消除的多个漏洞
Henna Myllymäki1,2, Lisa Kelly1, Abigail M Elliot1,3
1Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, EH16 4UU, UK.
Oncogenesis
|January 25, 2024
概括
癌细胞在发育早期表现出改变的能量代谢. 基因激活触发了增强的葡萄糖分解和受损的氧化酸化 (OXPHOS),为 preneoplastic 细胞消除提供了潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 细胞的新陈代谢
- 癌症研究 癌症研究
背景情况:
- 沃伯格效应,以增强的有氧糖解和缺陷的氧化酸化 (OXPHOS) 为特征,是癌细胞的标志.
- 代谢变化对早期瘤进展的确切时间和影响尚不清楚.
- 在癌症开始时调查能量代谢对于理解瘤发生至关重要.
研究的目的:
- 为了研究变化的能量代谢在 preneoplastic 细胞 (PNCs) 的启动和对瘤基因激活的影响.
- 确定代谢变化是否影响从最早阶段开始的瘤进展.
- 探索潜在的治疗策略,针对癌症发展中的早期代谢转变.
主要方法:
- 使用斑马鱼皮肤PNC模型,由HRASG12V瘤基因诱导驱动.
- 在瘤基因激活后24小时内分析了糖解和OXPHOS的变化.
- 评估了糖解抑制,葡萄糖可用性,甲福林治疗和线粒体碎片化调节对PNC增殖和亡的影响.
主要成果:
- 在24小时内,HRASG12V的诱导导致PNC中的糖解的快速上调.
- 抑制糖解减少了PNC增殖,而增加葡萄糖增加了增殖和减少了亡.
- 与增强的糖解一起观察到受损的OXPHOS,甲福林选择性地抑制了PNC扩张.
- 线粒体分裂与OXPHOS受损有关,其抑制诱导PNC亡.
结论:
- 改变的能量代谢,特别是增强的糖解和受损的OXPHOS,是体细胞中瘤基因激活后的早期事件.
- 这些代谢变化对于 preneoplastic 细胞的增殖和生存至关重要.
- 针对这些早期的代谢变化提供了一种有效的 preneoplastic 细胞消除和癌症预防的策略.
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