通过激活Wnt/β-catenin-SCD1正反循环,LRP8抑制了膀癌细胞铁亡
Yong Zhao1, Guohong Shi1, Xiang Huang1
1Department of Urology, Nanping First Hospital Affiliated to Fujian Medical University, No. 317 Zhongshan Road, Yanping District, Nanping City, Fujian Province 353000, China.
Human molecular genetics
|February 24, 2025
概括
低密度脂蛋白受体相关蛋白8 (LRP8) 通过Wnt/β-catenin-SCD1通路抑制铁亡,促进膀癌症. 准LRP8为膀癌治疗提供了一个新的策略.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 晚期膀癌 (bc) 提出了复发和耐药性等挑战,需要新的治疗策略.
- 铁亡是一种受调节的细胞死亡途径,对BC治疗有希望,但其调节机制需要进一步阐明.
- 这项研究侧重于低密度脂蛋白受体相关蛋白8 (LRP8) 作为BC细胞中铁亡的潜在调节者.
研究的目的:
- 研究LRP8在调节膀癌细胞中的铁亡中的作用.
- 阐明LRP8影响铁亡的分子机制,包括其与Wnt/β-catenin信号通路和脂肪酸合成的相互作用.
- 在膀癌的临床前模型中验证针对LRP8的治疗潜力.
主要方法:
- 量化PCR和西斑被用于测量LRP8表达,Wnt/β-catenin通路激活和BC细胞中的脂肪酸合成基因表达.
- 通过评估线粒体膜潜力,Fe2+水平,马隆迪化物和活性氧物种来评估铁化水平.
- 使用异种移植小鼠模型评估LRP8敲除对瘤生长和Wnt/β-catenin-SCD1轴的体内影响.
主要成果:
- 在BC细胞中,LRP8表达显著上调.
- 抑制LRP8诱导铁亡,这与Wnt/β-catenin信号通路的抑制有关.
- Wnt/β-catenin通路的LRP8激活调高了醇-CoA脱酶1 (SCD1),抑制了铁亡. 在体内,LRP8的敲击破坏了瘤生长,并抑制了Wnt/β-catenin-SCD1轴.
结论:
- LRP8通过通过Wnt/β-catenin-SCD1正反循环调解单不和脂肪酸合成,促进膀癌的进展,从而抑制铁亡.
- 准LRP8代表了一种有前途的治疗策略,用于克服膀癌中ferroptosis耐药性.
- 这些发现突出了LRP8作为铁亡的关键调节剂和在晚期膀癌中潜在的治疗点.
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