针对PRKCN,一个重要的驱动器,在多发性骨髓瘤中独立于激酶活动,调节mTOR-IRF4轴
Koukou Tang1, Dongpeng Jiang1, Peng Ke2
1Institute of Blood and Marrow Transplantation, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Collaborative Innovation Center of Hematology, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu, China.
蛋白激酶N (PKN) C是多发性骨髓瘤 (MM) 的新型治疗点. 向PKN C可以克服耐药性,并改善MM模型的结果.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 多发性骨髓瘤 (MM) 是一种无法治愈的血细胞恶性瘤.
- 放松调节的蛋白激酶N (PKN) C与固体瘤有关,但其在MM中的作用尚不清楚.
- 新的治疗目标对于克服MM的无法治愈性和耐药性至关重要.
研究的目的:
- 研究PRKCN在多发性骨髓瘤中的作用.
- 确定PRKCN作为MM的潜在治疗点.
- 阐明PRKCN在MM中的功能背后的分子机制.
主要方法:
- 确定PRKCN作为MM中的超强增强器驱动基因.
- 通过NF-κB信号来分析PRKCN的交易活化.
- 通过敲击评估PRKCN对细胞生长,瘤性和耐药性的影响.
- 研究PRKCN-IRF4相互作用和IRF4-PRKCN前电路.
- 探索PRKCN对mTORC1/C2信号传递及其酶独立功能的影响.
- 在体外和体内MM模型中使用口服生物可用抑制剂对PRKCN抑制的评估.
主要成果:
- PRKCN被确定为一种超级增强剂驱动的基因,与MM的预后不佳有关.
- PRKCN由NF-κB信号传递进行交换,并促进MM细胞生长和耐药性.
- 在IRF4和PRKCN之间建立了一个前电路,PRKCN激活mTOR信号,以促进IRF4的表达.
- PRKCN调节mTOR-IRF4轴和细胞生长,独立于其酶活性,但需要激活循环酸化.
- 抑制PRKCN抑制了MM的生长,在体外和体内克服了耐药性,并与减少PRKCN的表达和活性有关.
- PRKCN静音增强了干扰素信号传递和灵敏度.
结论:
- 在多发性骨髓瘤中,PRKCN将异常的NF-κB信号与mTOR-IRF4轴联系起来.
- PRKCN是MM的有希望的治疗标,为克服药物耐药性提供了一种战略.
- 用特定的抑制剂向PRKCN在临床前模型中显示出显著的抗髓瘤疗效.
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