A recessive screen for genes regulating hematopoietic stem cells.

A recessive screen for genes regulating hematopoietic stem cells.
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调节造血干细胞基因的隐性筛选。

DOI:
10.1182/blood-2010-04-269951
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发表时间:
2010
期刊:
影响因子:
20.3
通讯作者:
A. Perkins
A. Perkins
中科院分区:
医学1区
文献类型:
--
作者:
P. Papathanasiou;Robert Tunningley;D. Pattabiraman;P. Ye;T. Gonda;Belinda Whittle;Adam E Hamilton;S. Cridland;R. Lourie;A. Perkins

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鉴定调控干细胞发育、自我更新和分化的基因对于理解正常器官发生和癌症至关重要;这些知识也是再生医学的基础。在这里,我们证明了小鼠的化学诱变与造血干细胞试剂和基因组资源的进步相结合,可以有效地恢复隐性突变,并确定基因的生成和增殖的永久造血干细胞和/或其后代。我们使用高通量荧光激活细胞分选仪分析了超过1300个胚胎(E)14.5天的小鼠胚胎的血液干细胞,祖细胞,循环红细胞和血小板的9个亚群。从45个家系中,我们回收了6个造血缺陷株。我们证明了快速鉴定c-Myb转录因子中的一种新突变,该突变导致血小板增多症和骨髓纤维化,作为我们基于荧光激活细胞分选仪的筛选的实用性的主要证据。这种表型驱动的方法将提供有关支持干细胞生物学的基因、蛋白质相互作用和调控网络的新知识。
Identification of genes that regulate the development, self-renewal, and differentiation of stem cells is of vital importance for understanding normal organogenesis and cancer; such knowledge also underpins regenerative medicine. Here we demonstrate that chemical mutagenesis of mice combined with advances in hematopoietic stem cell reagents and genome resources can efficiently recover recessive mutations and identify genes essential for generation and proliferation of definitive hematopoietic stem cells and/or their progeny. We used high-throughput fluorescence-activated cell sorter to analyze 9 subsets of blood stem cells, progenitor cells, circulating red cells, and platelets in more than 1300 mouse embryos at embryonic day (E) 14.5. From 45 pedigrees, we recovered 6 strains with defects in definitive hematopoiesis. We demonstrate rapid identification of a novel mutation in the c-Myb transcription factor that results in thrombocythemia and myelofibrosis as proof of principal of the utility of our fluorescence-activated cell sorter-based screen. Such phenotype-driven approaches will provide new knowledge of the genes, protein interactions, and regulatory networks that underpin stem cell biology.
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