激活SIRT1促进能量稳态,并重编程肝癌代谢
Benluvankar Varghese1, Ugo Chianese1, Lucia Capasso1
1Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Vico De Crecchio 7, 80138, Naples, Italy.
Journal of translational medicine
|September 15, 2023
概括
在缺乏葡萄糖的情况下,SCIC2.1激活SIRT1,促进肝细胞癌细胞的能量稳定和线粒体功能. 这项研究提供了关于SIRT1的见解.
科学领域:
- 细胞的新陈代谢
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 癌细胞表现出不受控制的增殖和能量代谢受损.
- 赛尔图因是能量代谢的关键调节者,SIRT1参与压力反应和营养缺乏途径.
- 之前的研究表明,SCIC2.1对SIRT1的激活减弱了基因毒性反应和衰老.
研究的目的:
- 为了研究SCIC2.1对肝细胞癌 (HCC) 细胞在葡萄糖剥夺下代谢反应的影响.
- 阐明SIRT1激活在调节HCC细胞生物能量和应激反应中的作用.
主要方法:
- 使用MTT测定和xCELLigence系统评估细胞活力和增殖.
- 基因和蛋白质表达通过实时PCR,西式涂抹和免疫沉来分析.
- 细胞代谢状态使用海马XF24分析仪和酶定量测试进行评估.
主要成果:
- 在缺乏葡萄糖的情况下,SCIC2.1治疗诱导了HCC细胞中SIRT1,SIRT3和SIRT6的过度表达.
- 通过AMPK-p53-PGC1α通路,SCIC2.1促进了线粒体生物发生和ATP生产.
- SCIC2.1重新编程了葡萄糖代谢和脂肪酸氧化,抑制了新的脂质生成,并调节了抗氧化和压力反应.
结论:
- 通过激活SIRT1.1,SCIC2.1促进能量稳定,并通过激活SIRT1.1,减轻HC细胞中的代谢压力.
- 这些发现凸显了SIRT1在HCC发病过程中的代谢作用.
- 这项研究可能会为HCC和其他代谢性疾病的未来治疗策略提供信息.
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