Blood:Suz12失活与JAK3突变信号协同促进T-ALL进展

2019-09-07 MedSci MedSci原创

PRC2复合物的核心成分是EZH2、SUZ12和EED,可促进组蛋白发生H3K27me3来使相关基因沉默。对419例T细胞急性淋巴细胞白血病(T-ALL)病例的测序数据的分析结果显示,SUZ12和JAK3突变之间具有显著的相关性。

中心点:

Suz12失活与JAK3突变信号协同驱动T-ALL的发展。

JAK3/Suz12突变白血病细胞对PI3K/mTOR、VEGFR和HSP90抑制剂的敏感性增强。

摘要:

PRC2复合物的核心成分是EZH2、SUZ12和EED,可促进组蛋白发生H3K27me3来使相关基因沉默。对419例T细胞急性淋巴细胞白血病(T-ALL)病例的测序数据的分析结果显示,SUZ12和JAK3突变之间具有显著的相关性。

研究人员发现CRISPR/Case9介导失活Suz12协同JAK3突变可驱动T细胞转化和T-ALL进展。结合ChIP-seq和ATAC-seq数据的基因表达谱分析表明,Suz12失活导致PI3K/mTOR、VEGF和WNT信号增强。

此外,药物筛选试验显示JAK3/Suz12突变型白血病细胞对HDAC6抑制的敏感性高于JAK3突变型白血病细胞。研究人员对Suz12失活后的全基因组表达变化进行综合分析发现,在JAK3和Suz12联合突变的T-ALL细胞中,PI3K/mTOR、VEGF/VEGFR和HDAC6/HSP90信号通路的易损性增加。

原始出处:

Michael Broux,et al.Suz12 inactivation cooperates with JAK3 mutant signaling in the development of T-cell acute lymphoblastic leukemia.Blood 2019 :blood.2019000015; doi: https://doi.org/10.1182/blood.2019000015

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    2020-02-23 jiekemin
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    2019-09-09 膀胱癌
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    2019-09-09 紫砂壶

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