癌细胞对铁亡的敏感化与细胞循环停止一致
Jason Rodencal1, Nathan Kim1, Andrew He2
1Department of Biology, Stanford University, Stanford, CA 94305, USA.
Cell chemical biology
|November 14, 2023
概括
细胞循环停止增强了癌细胞对GPX4抑制剂诱导的铁亡的敏感性,而不是系统xc-抑制剂. 这是由于可氧化脂的增加而发生的,这表明了新的治疗策略.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 铁亡是一种受调节的细胞死亡途径,与各种疾病有关.
- 抑制系统xc-或谷氨过氧化酶4 (GPX4) 可以诱导铁亡.
- 细胞循环调节和铁亡之间的相互作用仍然不完全理解.
研究的目的:
- 为了研究细胞循环停止对铁灭敏感性的影响.
- 为了确定细胞循环停止是否影响对不同铁灭诱导物的敏感性.
- 阐明细胞循环停止期间变化的铁灭敏感性背后的分子机制.
主要方法:
- 使用p53稳定或循环素依赖酶4/6 (CDK4/6) 抑制诱导细胞循环停止.
- 在用系统xc-抑制剂或GPX4抑制剂治疗时评估铁灭症敏感性.
- 含有多不和脂肪酸的脂质 (PUFA-PLs) 的量化和MBOAT1和EMP2.2的表达水平.
主要成果:
- 细胞循环停止增强了对GPX4抑制剂的敏感性,但不是系统xc-抑制剂.
- 对GPX4抑制剂的敏感性增加与高水平的可氧化PUFA-PLs相关.
- 细胞循环停止导致MBOAT1和EMP2的表达减少,从而导致PUFA-PL的丰度增加.
- 与口服生物可用GPX4抑制剂和CDK4/6抑制剂的联合治疗在体内减少了瘤体积.
结论:
- 细胞循环停止可以使癌细胞对GPX4抑制诱导的铁亡敏感.
- 这种敏感性是由可氧化PUFA-PLs.的细胞水平增加所介导的.
- 向细胞循环停止与GPX4抑制剂结合,代表了癌症治疗的潜在治疗策略.
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