Blood:针对突变型RUNX1 AML细胞的靶向疗法

2019-04-27 MedSci MedSci原创

RUNX1转录因子可调节正常的和恶性的造血作用。体细胞或生殖细胞RUNX1突变(mt)与AML患者预后不良相关。敲除或抑制RUNX1可诱导更多的表达突变型RUNX1的AML细胞凋亡,提高表达突变型RUNX1的AML细胞的移植鼠的存活率。通过CRISPR/Case9介导敲除RUNX1增强子(eR1)或shRNA敲低BET蛋白BRD4抑制RUNX1的表达,可抑制突变型RUNX1 AML细胞的生长、诱导

RUNX1转录因子可调节正常的和恶性的造血作用。体细胞或生殖细胞RUNX1突变(mt)与AML患者预后不良相关。敲除或抑制RUNX1可诱导更多的表达突变型RUNX1的AML细胞凋亡,提高表达突变型RUNX1的AML细胞的移植鼠的存活率。通过CRISPR/Case9介导敲除RUNX1增强子(eR1)或shRNA敲低BET蛋白BRD4抑制RUNX1的表达,可抑制突变型RUNX1 AML细胞的生长、诱导其死亡。

用BET蛋白抑制剂(BETi)或降解剂(BET-PROTAC)抑制RUNX1及其靶点,可诱导细胞凋亡并提高突变型RUNX1 AML移植小鼠的存活率。LINCS1000-CMap数据库通过分析RUNX1敲除后的mRNA发现了一种新的表达模拟剂(EMs),可抑制RUNX1的表达,并可针对突变型RUNX1 AML细胞发挥作用。

EMs 华蟾蜍精、茴香霉素和秋水仙碱均可诱导AML患者来源的表达突变型RUNX1的造血祖细胞(HPCs)死亡,而且死亡率远高于来源于家族性血小板病(FPD)患者的HPCs或正常的未转化的HPCs。

本研究强调了针对表达突变型RUNX1的AML细胞的新型治疗药物。

原始出处:

Christopher P Mill, et al.RUNX1 targeted therapy for AML expressing somatic or germline mutation in RUNX1. Blood 2019 :blood.2018893982; doi: https://doi.org/10.1182/blood.2018893982


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    2019-04-29 soongzhihua
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    2019-04-28 txqjm

    谢谢了,学习

    0

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    2019-04-28 深海的鱼

    学习学习学习学习

    0

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