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小分子费里丁降解剂作为热诱导剂

Yu Chen^1,2,3, Wen Li¹, Song Kwon¹

¹Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States.

Journal of the American Chemical Society

|April 24, 2023

概括

研究人员开发了一种新型向费里丁的PROTAC (向蛋白质溶解的嵌合体),用于诱导癌细胞的铁过载压力,触发热死并抑制瘤生长,副作用最小.

科学领域:

生物化学
癌症学
药物开发

背景情况:

在恶性细胞的细胞内代谢应激对于理解癌症病理和开发疗法至关重要.
针对铁代谢是抗癌策略的一个有希望的途径.

研究的目的:

开发铁向蛋白解向嵌合体 (PROTACs),以诱导癌细胞中的铁过量压力.
研究细胞对诱导铁过载的反应及其治疗潜力.

主要方法:

通过结剂将油酸 (与费里二聚体结合) 与希佩尔-林道 (VHL) E3结合体结合,从而产生PROTAC.
对DeFer-2的选,以检测其降解费里和提升自由铁的能力.
将DeFer-2装入基于白蛋白的纳米配方,用于体内研究.

主要成果:

PROTAC DeFer-2成功降解了费里丁,导致细胞内自由铁的迅速升高.
这种铁过载在癌细胞中引发了与铁异的酶3-GSDME介导的灭.
在B16F10瘤的小鼠中,纳米配方DeFer-2显著抑制瘤生长和延长存活时间,并显示微不足道的不良反应.

结论:

开发了一种新型向铁素的PROTAC,用于诱导铁过载压力.
铁代谢失调被证明可以调解癌细胞中的热.
这种基于PROTAC的方法提供了一种潜在的新策略,用于通过诱导热的抗癌治疗.

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