在神经母细胞瘤中,DHODH阻塞通过调节美瓦酸路径来诱导铁亡
Jui-Chia Shih1, Pin-Yu Chen1, Chuan-Hao Kuo1
1Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan.
Molecular & cellular proteomics : MCP
|June 13, 2025
概括
用Regorafenib抑制二罗酸脱酶 (DHODH) 有效地降低了神经母细胞瘤的生长. 这种方法重编程脂质代谢以诱导铁亡,为儿童癌症提供了一种新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 生物化学 生物化学
- 代谢途径 代谢途径
背景情况:
- 神经母细胞瘤是一种常见的儿科癌症,治疗选择有限,特别是在高风险病例中.
- 氨酸脱酶 (DHODH) 是一个验证的癌症标,但现有的抑制剂在神经母细胞瘤中缺乏有效性.
- 向DHODH为侵袭性儿科瘤提供了潜在的治疗途径.
研究的目的:
- 为了确定用于神经母细胞瘤治疗的新型DHODH抑制剂.
- 研究DHODH抑制影响神经母细胞瘤生长的分子机制.
- 探索脂质代谢和铁化在DHODH向的神经母细胞瘤治疗中的作用.
主要方法:
- 虚拟查以确定潜在的DHODH抑制剂.
- 使用神经母细胞瘤细胞系和患者衍生器官的体外研究.
- 基于Tandem Mass Tag (TMT) 的定量蛋白质组学 (LC-MS/MS) 来分析蛋白质组变化.
- 脂质代谢的分析,包括胆固醇和烯氧化酶 (SQLE) 表达.
主要成果:
- 雷戈拉菲尼布被确定为一种强大的DHODH抑制剂,显著降低神经母细胞瘤细胞和有机体生长.
- 蛋白质组分析揭示了DHODH抑制引起的脂质代谢变化,特别是美瓦酸途径,与铁亡相关.
- DHODH抑制降低了胆固醇和胆固醇,破坏了脂质滴,降低了SQLE表达,同时增加了核SQLE.
结论:
- DHODH阻塞是一种通过脂质代谢重编程诱导神经母细胞瘤中铁亡的有希望的策略.
- 雷戈拉菲尼布通过向DHODH和改变脂质平衡来证明对神经母细胞瘤的有效性.
- 这项研究确立了DHODH作为一个可行的治疗点,并强调了儿童癌症的代谢干预措施.
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