通过向SIRT1-HIF-2α轴来脱NAD+代谢依赖性在软骨肉瘤中
Jooyeon Suh1, Hyeonkyeong Kim2, Jiyun Min1
1Center for RNA Research, Institute for Basic Science, Seoul 08826, South Korea; Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, South Korea.
Cell reports. Medicine
|December 21, 2023
概括
向SIRT1会扰乱尼古丁胺氨酸二核酸 (NAD+) 在肌肉瘤细胞中的代谢,抑制瘤生长并提高化疗疗效. 这一发现为这种骨癌提供了新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 软骨肉瘤是一种常见的原发性骨癌.
- 由于其广泛的生物作用,向尼古丁胺胺氨基二核酸 (NAD+) 代谢是很困难的.
- Dagiti chondrosarcoma a selula ket mangipakita ti vulnerability iti NAD+ depletion.
研究的目的:
- 研究SIRT1在冠状动脉瘤NAD+代谢中的作用.
- 确定向SIRT1-HIF-2α轴在软骨肉瘤中的治疗潜力.
- 确定可能受益于SIRT1抑制的患者子组.
主要方法:
- 在正位点小鼠模型中SIRT1敲击.
- 在葡萄糖饥饿下对NAD+积累的分析.
- 基于NAD+生物合成基因的患者数据的无监督聚类.
- 评估SIRT1抑制与多克索鲁比辛的结合.
主要成果:
- 在体内,SIRT1 knockdown 消除了侵袭性软骨肉瘤表型.
- 软骨肉瘤细胞在葡萄糖饥饿下激活SIRT1-HIF-2α轴.
- 抑制SIRT1诱导了亡并抑制了瘤的进展.
- 确定了一个高风险的患者亚组,该亚组具有高调节的NAD+生物合成基因.
- 抑制SIRT1使细胞对多克索鲁比敏感,而不考虑NAD+积累途径.
结论:
- SIRT1 是一种关键的调解者,使得软骨肉瘤依赖通过HIF-2α通过NAD+代谢.
- 向SIRT1为冠状腺癌提供了一个有希望的治疗策略,可能增强化疗.
- 建议制定系统级指导方针,用于开发冠状动脉瘤治疗方法.
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