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Carfilzomib联合Z-VAD-FMK对肿瘤恶病质的防治作用

, PP. 2292-2295

Keywords: 肿瘤恶病质,carfilzomib,Z-VAD-FMK,泛素蛋白酶体通路,凋亡通路

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Abstract:

目的评价联合运用蛋白酶体抑制剂Carfilzomib与Caspase抑制剂Z-VAD-FMK对肿瘤恶病质的防治作用及其机制。方法BALB/c小鼠前腋皮下接种结肠腺癌C26细胞,建立肿瘤恶病质动物模型。随后在不同时间点给予Carfilzomib和Z-VAD-FMK单独与联合用药,检测荷瘤小鼠体质量、腓肠肌质量、肿瘤质量和体积、自发性生理活动和生存时间;qRT-PCR和Westernblot检测腓肠肌Caspase3、MuRF1和MAFbx的mRNA表达水平和蛋白水平。结果Carfilzomib与Z-VAD-FMK联合作用缓解荷瘤小鼠体质量下降,抑制骨骼肌萎缩和肿瘤生长,提高自发性生理活动和延长生存时间;减少腓肠肌MuRF1、MAFbx和Caspase3表达;联合作用大于单独用药(P<0.05),预防作用明显大于治疗作用(P<0.05)。结论Carfilzomib与Z-VAD-FMK联合作用抑制了恶病质荷瘤小鼠腓肠肌泛素蛋白酶体通路和凋亡通路,可以预防和治疗肿瘤恶病质的发生、发展。

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