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全基因组的CRISPR-Cas9淘汰屏幕识别了DNMT1作为声波刺脑膜母细胞瘤中可服用药物的依赖性

Foteini Tsiami^1,2, Chiara Lago³, Noemi Pozza³

¹Department of Neurology and Interdisciplinary Neuro-Oncology, Hertie Institute for Clinical Brain Research, University Hospital Tübingen, Eberhard Karls University, Tübingen, Germany.

Acta neuropathologica communications

|August 6, 2024

概括

向DNA甲基转移酶1 (DNMT1) 为Sonic hedgehog medulloblastoma (SHH-MB) 提供了一个新的治疗策略. 单独或与SMO抑制剂一起抑制DNMT1,有效地治疗SHH-MB模型并克服耐药性.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
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:

声波刺髓母细胞瘤 (SHH-MB) 依赖于SHH信号通路.
滑化 (SMO) 抑制剂显示出临床前景,但面临着耐药性挑战.
了解耐药机制对于开发新的SHH-MB疗法至关重要.

研究的目的:

通过探索遗传依赖来确定SHH-MB的新型治疗点.
调查表观遗传调节剂在SHH-MB生长和耐药性的作用.
评估DNMT1抑制作为SHH-MB的潜在治疗策略.

主要方法:

在小鼠SMB21和人类DAOY细胞中进行了全基因 CRISPR-Cas9 淘汰屏幕.
评估了DNA甲基转移酶1 (DNMT1) 在小脑发育和SHH-MB生长中的作用.
单独或与SMO抑制剂结合,对DNMT1的药理抑制在临床前模型中进行了测试.

主要成果:

在CRISPR屏幕中,DNMT1被确定为SHH-MB的可药物标.
在体内,Dnmt1对于正常小脑发育和SHH-MB瘤生长至关重要.
在SHH-MB模型中,DNMT1抑制,有或没有SMO抑制,抑制瘤生长和延长存活时间.

结论:

DNMT1是SHH-MB的关键调节者,也是一个有前途的治疗标.
抑制DNMT1代表了对SMO抑制剂敏感和耐药SHH-MB的新策略.
准表观遗传调节器为治疗SHH-MB提供了一个新的途径.

关键词:

组合治疗是一种组合治疗.在 DNMT1 中,DNMT1 是一个字符串.功能性基因组学是一种功能性基因组学.中枢细胞瘤 (Medulloblastoma) 是一个通过SHH通道.协同效应是一种协同效应.

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