尿素敏感查识别了核酸合成的基因和代谢调节者
Abigail Strefeler1, Zakery N Baker2, Sylvain Chollet1
1Department of Immunobiology, University of Lausanne, Epalinges, Switzerland.
bioRxiv : the preprint server for biology
|March 31, 2025
概括
研究人员发现了细胞如何平衡核酸生产,并确定了NUDT5作为防止氨酸合成扰乱氨酸生产的关键,这可能导致化疗耐药性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
背景情况:
- 核酸合成对于快速增殖的细胞至关重要,使其成为癌症治疗的目标.
- 新兴的耐药性需要对核酸代谢调节的更深入的理解.
研究的目的:
- 为了识别新型调节器的新型pyrimidine合成.
- 阐明NUDT5在核酸平衡和化疗耐药性中的作用.
主要方法:
- 采用CRISPR-Cas9查来确定新型胺合成的调节者.
- 生物化学测试被用来研究NUDT5和PPAT之间的相互作用.
主要成果:
- 鉴定出了几种新型的皮里米丁合成调节剂.
- 皮里米丁合成可以在没有辅酶Q (CoQ) 的情况下进行.
- NUDT5与PPAT相互作用,调节基酸盐 (PRPP) 的可用性,并影响皮里米丁合成.
- 丢失NUDT5导致过度活跃的 purin 合成,耗尽PRPP,并促进化疗耐药性.
结论:
- NUDT5在维持核酸平衡中发挥着至关重要的作用,它通过防止 purin 合成超过 pyrimidine 合成来维持核酸平衡.
- NUDT5和PPAT之间的相互作用是通过PRPP.allosterically调节的.
- NUDT5是预测化疗耐药性的潜在生物标志物.
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