FASN通过通过Thr254的酸化和Pin1的异构化来降低p65表达的稳定性来负面调节p65表达
Lincoln Barlow1, Sophia Josephraj2, Boqing Gu2
1Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA.
Journal of lipid research
|March 11, 2024
概括
脂肪酸合成酶 (FASN) 通过酸化调节p65蛋白的稳定性,这种过程由其产物palmitate介导. 这一发现揭示了癌症药物耐药性机制.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 脂肪酸合成酶 (FASN) 对于 de novo palmitate 合成至关重要,并与癌症预后和耐药性不佳有关.
- 通过调节通过p65表达的DNA损伤修复,FASN影响药物和辐射耐药性.
- 通过FASN调节p65表达的确切机制尚不清楚.
研究的目的:
- 为了阐明FASN调节p65表达的机制.
- 调查FASN及其产物palmitate在控制p65稳定性的作用.
主要方法:
- 研究了FASN对Thr254.p65酸化的作用.
- 研究了酸化p65和Pin1.1之间的相互作用.
- 评估了palmitate在调节p65稳定性的作用.
主要成果:
- FASN通过控制其在Thr254.4的酸化来调节p65的稳定性.
- 化p65招募了Pin1,一种已知的增强核蛋白稳定性的蛋白质.
- 棕酸盐是FASN的催化产物,它调节了这种调节,而不是FASN蛋白本身.
结论:
- 在Thr254和随后的Pin1异构化中,FASN通过Palmitate介导的酸化控制p65的稳定性.
- 这种机制突出了FASN和palmitate在调节蛋白质稳定性,特别是p65.5的新作用.
- 这些发现可能为针对癌症治疗中的FASN提供新的治疗策略.
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