ZNF207驱动的PRDX1乳酸和NRF2激活在雷戈拉费尼布耐药性和铁死回避中的作用
Tianfeng Yang1, Suyu Zhang1, Kun Nie1
1School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, PR China; State Key Laboratory of Shaanxi for Natural Medicines Research and Engineering, Xi'an 710061, PR China.
概括
指蛋白207 (ZNF207) 通过抑制铁亡,在肝癌中驱动对Regorafenib (RGF) 的耐药性. 准ZNF207-PRDX1-NRF2通路可以恢复RGF的敏感性,并提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 雷戈拉芬尼 (Regorafenib,简称RGF) 是晚期肝细胞癌 (HCC) 的关键二线治疗方法.
- 药物耐药性,特别是对RGF的耐药性,显著限制了HCC的治疗疗效和患者结局.
- 了解RGF抗性的分子机制对于开发有效的治疗策略至关重要.
研究的目的:
- 确定HCC中RGF抗性的关键分子驱动因素.
- 阐明ZNF207赋予RGF抗性的机制.
- 探索针对已识别的抗性途径的治疗潜力.
主要方法:
- 在RGF治疗的HCC细胞中使用CRISPR/Cas9查来识别与耐药性相关的基因.
- 西方涂抹和免疫沉被用来分析蛋白质的修饰和相互作用.
- 进行了细胞活力测定,铁灭测定和敲击/抑制实验,以评估功能作用.
主要成果:
- 在CRISPR/Cas9查中,指蛋白207 (ZNF207) 被确定为RGF抗性的关键调解者.
- ZNF207通过增强Peroxiredoxin 1 (PRDX1) 的乳化,从而导致NRF2激活和抑制铁亡,促进RGF耐药性.
- 通过重新激活ferroptosis,中断ZNF207或破坏ZNF207-PRDX1-NRF2通路恢复了RGF敏感性.
结论:
- ZNF207-PRDX1-NRF2信号轴是一种新的机制,可以驱动HCC的RGF抵抗.
- 向蛋白质乳和铁灭抑制是一个有希望的战略,以克服RGF抵抗.
- 这一途径可能是克服其他癌症药物耐药性的更广泛的治疗目标.
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