在Myc诱导过程中,Csnk1a1平分不足和突变p53的协作作用可以促进白血病转化
Stijn N R Fuchs1,2, Ursula S A Stalmann1,2, Inge A M Snoeren1,2
1Department of Developmental Biology, Erasmus Medical Center, Rotterdam, the Netherlands.
Blood advances
|December 26, 2023
概括
在del ((5q) 骨髓质疏松症候群 (MDS) 中的遗传哈普洛缺陷,与Trp53中断相结合时,驱动白血病的发展. 一种CSNK1抑制剂通过降低Myc.的调节来有效治疗这些白血病.
科学领域:
- 血液学 血液学 血液学
- 癌症生物学 癌症生物学
- 遗传学 是一个遗传学.
背景情况:
- 在del(5q) 骨髓质疏松综合征 (MDS) 中恶性转化背后的机制尚不清楚.
- 在5号染色体的常见删除区域内存在遗传的哈普洛缺陷.
研究的目的:
- 为了研究Csnk1a1和Egr1与Trp53中断的联合哈普洛缺陷对造血干细胞的影响.
- 建立一个研究del(5q) MDS病原体和药物查的模型.
主要方法:
- 使用CRISPR/Cas9编辑来破坏野生类型的血液生成原始体Trp53,Csnk1a1-/+,Egr1-/+,和Csnk1a1/Egr1-/+小鼠.
- 移植后评估了白血病的发展.
- 用CSNK1抑制剂 (A51) 进行了爆炸和药物查的ex vivo培养.
- 进行了转录基因和蛋白质基因分析.
主要成果:
- 可移植的急性白血病只发生在Csnk1a1-/+Trp53编辑的接受者身上.
- 在体内,CSNK1抑制剂A51表现出协作治疗效果,使激光细胞敏感并减少激光细胞的数量.
- 白血病的发展与MAPK和Myc的上调有关,由Csnk1a1的哈普洛缺陷和下调的p53轴驱动.
- 低调 Myc 蛋白与 A51 治疗疗效相关.
结论:
- 结合的Csnk1a1哈普隆缺陷和Trp53损失在del5q) MDS模型中促进白血病的发展.
- 抑制CSNK1代表了具有TP53突变的del(5q) MDS的潜在治疗策略.
- 在白血病模型中识别的Myc签名与具有TP53突变的人类del ((5q) MDS患者的Myc签名相似.
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