MCL1调节mTORC1信号,以促进生物能量和瘤发生
Wentao Gui1,2,3,4,5, Petr Paral6,7, Bhavuk Dhamija1,2
1Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
骨髓细胞白血病-1 (MCL1) 蛋白质通过通过mTORC1信号调节新陈代谢来促进瘤. 氨酸补充剂可以通过恢复心脏mTORC1信号来降低MCL1抑制剂心脏毒性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢过程中的代谢.
背景情况:
- 骨髓细胞白血病-1 (MCL1) 经常在瘤中过度表达,主要以抑制亡和促进癌症生长而闻名.
- 新出现的证据表明,MCL1的功能超出了细胞亡调节,可能会影响细胞代谢和信号通路.
研究的目的:
- 为了研究MCL1.1.的新出现的,与亡无关的功能.
- 确定由MCL1调节的信号通路及其在瘤发生和新陈代谢中的作用.
- 探索缓解MCL1抑制剂相关心脏毒性的治疗策略.
主要方法:
- 选信号开关以确定与MCL的相互作用1.1.
- 通过MCL1和相关蛋白质 (Bcl-2,Bcl-xL) 对mTORC1信号调制的分析.
- 评估MCL1对赫索金酶2 (HK2) 表达和细胞代谢的影响.
- 评估MCL1抑制剂对瘤细胞和心脏组织的影响.
- 研究食白补充剂在小鼠模型中改善心脏毒性的疗效.
主要成果:
- MCL1,但不是Bcl-2或Bcl-xL,调节mTORC1信号传递,这是一个关键的代谢调节器.
- MCL1通过以mtORC1依赖的方式调节HK2表达来影响瘤细胞代谢.
- MCL1 抑制剂抑制瘤细胞mTORC1,但通过心脏的mTORC1 抑制引起心脏毒性.
- 食白补充剂拯救了心脏mTORC1信号,并减少了与MCL1抑制剂治疗的小鼠的心脏毒性.
结论:
- 除了其抗亡功能外,MCL1通过调节mTORC1信号和细胞生物能学,在促进瘤方面发挥着重要作用.
- MCL1 作为细胞生物能和生存途径之间的关键纽带.
- 食白补充剂是一种有前途的策略,可以减轻与MCL1抑制剂相关的心脏毒性,从而使其在癌症治疗中的潜在用途成为可能.
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