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Blood:单细胞技术发现了驱动恶性造血干细胞自我更新的分子网络

2018-07-12 MedSci MedSci原创

中心点:单细胞技术可鉴别恶性HSC自我更新的调控子。摘要:单细胞技术的最新进展使得我们可以既往不能达到的分辨率来研究异质性细胞群。Mairi S. Shepherd等人利用该技术探究驱动小鼠造血干细胞(HSCs)疾病的分子机制,以JAK2V617F突变型骨髓及髓外增殖性肿瘤(MPNs)为模型。单细胞基因表达和功能分析发现了一个JAK2V617F突变型HSCs的亚集,表现为自我更新缺陷。该缺陷可在单

中心点

单细胞技术可鉴别恶性HSC自我更新的调控子。

摘要:

单细胞技术的最新进展使得我们可以既往不能达到的分辨率来研究异质性细胞群。Mairi S. Shepherd等人利用该技术探究驱动小鼠造血干细胞(HSCs)疾病的分子机制,以JAK2V617F突变型骨髓及髓外增殖性肿瘤(MPNs)为模型。

单细胞基因表达和功能分析发现了一个JAK2V617F突变型HSCs的亚集,表现为自我更新缺陷。该缺陷可在单HSC水平通过将JAK2V617F小鼠与缺乏TET2(在MPN患者中最常见的共突变基因)的小鼠杂交得到恢复。JAK2V617F突变型HSCs的单细胞基因表达谱分析发现了缺失的特异性调控基因,其中部分基因在单个TET2/JAK2突变型HSCs中恢复至正常水平。

在JAK2突变型HSCs中,Bmi1过表达可驱动一种疾病表型并仍可维持干细胞自我更新的能力,Pbx1和Meis1过表达也有稍弱的相似效果。

总而言之,这些单细胞技术细化了涉及MPNs克隆性扩增的分子,对解析正常和恶性干细胞的分子网络具有广泛意义。

原始出处:

Mairi S. Shepherd,et al. Single cell approaches identify the molecular network driving malignant hematopoietic stem cell. Blood  2018  :blood-2017-12-821066;  doi: https://doi.org/10.1182/blood-2017-12-821066

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    2018-07-14 俅侠
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    2018-07-12 phoebeyan520

    学习了.谢谢分享

    0

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    2018-07-12 qingfengqishi5

    学习了.学习了

    0

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