CSN6-SPOP-HMGCS1轴通过YAP1激活促进肝细胞癌的进展
Kai Li1,2,3,4, Jiayu Zhang1,2,3,4, Haiwen Lyu1,2,3,4
1Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510655, China.
这项研究显示,CSN6通过稳定HMGCS1,激活YAP1.1,从而促进肝癌. 向CSN6和HMGCS1抑制瘤生长,为脂肪肝疾病相关的癌症提供了一种新的策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢途径 代谢途径
背景情况:
- 胆固醇代谢对细胞膜的完整性至关重要,并与肥胖和癌症等疾病有关.
- 癌细胞表现出高胆固醇合成,用于增殖和微环境调节,但针对这种途径是具有挑战性的.
- 肝细胞癌 (HCC) 的进展与失调的代谢过程有关.
研究的目的:
- 研究CSN6在肝细胞癌 (HCC) 发病过程中的作用.
- 阐明CSN6影响胆固醇代谢和瘤生长的分子机制.
- 评估向HC中CSN6-HMGCS1-YAP1轴的治疗潜力.
主要方法:
- 在HCC组织中分析CSN6表达.
- 使用生物化学测试,研究CSN6,HMGCS1和SPOP之间的相互作用.
- 评估CSN6对HMGCS1的稳定及其对YAP1激活的影响.
- 在 ортотоп性肝癌模型和患者衍生的异种移植中准CSN6和HMGCS1的治疗疗效的评估.
主要成果:
- 在HCC中,CSN6是上调调节的,并且在美酸盐通路中积极调节基甲基酸-CoA合成酶1 (HMGCS1).
- CSN6对抗SPOP泛素酶,导致HMGCS1稳定和随后的YAP1激活,促进瘤生长.
- 抑制CSN6和HMGCS1有效地阻碍了在临床前HCC模型中的瘤生长,无论饮食如何.
- 减少HMGCS1增强了YAP抑制剂在患者衍生异端移植中的有效性.
结论:
- 一个新的CSN6-HMGCS1-YAP1信号轴驱动HCC中的瘤外生长.
- 准CSN6和HMGCS1为HCC提供了一个有希望的治疗策略,特别是在非酒精性脂肪肝疾病的背景下.
- 这个轴为改善HCC患者的治疗结果提供了一个潜在的治疗目标.
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