在KMT2A中,骨髓微环境诱导的化学保护被重组的儿科AML通过阿扎西丁-帕诺宾诺斯塔特组合克服
Kara M Lehner1,2, Anilkumar Gopalakrishnapillai1,2, Edward Anders Kolb1
1Lisa Dean Moseley Foundation Institute for Cancer and Blood Disorders, Nemours Children's Hospital, Wilmington, DE 19803, USA.
Cancers
|June 28, 2023
概括
新型表观遗传药物阿扎西提丁和帕诺比诺斯塔特在儿科急性髓性白血病 (AML) 中克服了骨髓保护. 这种组合使白血病细胞对化疗敏感,提高治疗疗效,并可能降低复发率.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 儿科急性髓性白血病 (AML) 治疗进展有限,尽管初步缓解,但复发率高.
- 在AML中,KMT2A转位是常见的,与预后不佳和化疗耐药性有关.
- 骨髓微环境保护AML细胞免受化疗,有助于复发.
研究的目的:
- 调查阿扎西蒂丁和泛尼诺斯塔能否在儿科AML中克服骨髓利基诱导的化疗保护.
- 为了确定这种表观遗传药物组合是否使AML细胞对细胞氨酸化疗敏感.
主要方法:
- 利用了AML细胞系和患者衍生的异种移植的多细胞共同培养系统.
- 评估了阿扎西提丁和帕诺比诺斯塔特对细胞因子敏感性的协同效应.
- 评估了表观遗传组合对白血病细胞与骨髓成分的相互作用和体内动员的影响.
主要成果:
- 阿扎西提丁和帕诺比诺斯塔特协同使AML细胞 (MV4;11和KMT2A重新安排的异种移植) 对共养殖中的细胞arabine敏感.
- 在实验室中,表观遗传药物组合减少了白血病细胞对骨髓成分和细胞外基质的粘附.
- 用azacitidine和panobinostat进行预治疗提高了体内化疗的疗效,并增加了白血病细胞的动员.
结论:
- 阿扎西提丁和帕诺比诺斯塔特可以在儿科AML中克服骨髓利基介导的化疗保护.
- 这种表观遗传组合有望提高AML对化疗的敏感性,并改善治疗结果.
- 用表观遗传药物向骨髓微环境代表了克服AML复发的新策略.
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