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BH3模仿剂和阿扎西提丁在青少年骨髓单细胞白血病上表现出协同作用

Ying Wu^1,2,3, Patricia M A Zehnle^1,4, Jovana Rajak^1,5

¹Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

|November 9, 2023

概括

青少年骨髓单细胞白血病 (JMML) 细胞依赖MCL-1和BCL-XL生存. 将阿扎西提丁与向这些蛋白质的BH3模仿剂结合起来,为耐火性JMML提供了一个有前途的新疗法.

科学领域:

血液学血液学血液学
在瘤学瘤学.
分子生物学分子生物学

背景情况:

青少年骨髓单细胞白血病 (JMML) 是一种由RAS信号驱动的侵袭性儿童癌症.
目前的治疗方法,如干细胞移植,对某些JMML亚型的复发率很高.
阿扎西提丁显示有效性,但面临着可变反应和药物耐药性的挑战.

研究的目的:

通过向亡途径来研究JMML的新型治疗策略.
在患者衍生异种移植模型中评估将阿扎西蒂丁与BH3模仿药物结合的疗效.

主要方法:

使用了来自患者的JMML.异种移植模型.
使用阿扎西提丁和各种BH3模仿剂 (向BCL-2,MCL-1,BCL-XL) 的联合治疗.
在体内评估白血病细胞负担和分子变化.

主要成果:

为了生存,JMML细胞依赖MCL-1和BCL-XL.
阿扎西提丁降低了抗尾性MCL-1的调节,并提高了仅对尾性BH3蛋白的调节.
与阿扎西提丁和BCL-XL抑制剂的联合治疗在消除JMML细胞方面表现出比BCL-2抑制剂更高的疗效.

结论:

向MCL-1或BCL-XL与阿扎丁结合治疗是治疗耐火性JMML的可行策略.
开发临床适用的MCL-1或BCL-XL抑制剂对于推进JMML组合疗法至关重要.

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