Cis-regulatory mechanisms governing stem and progenitor cell transitions

Kirby D. Johnson, Guangyao Kong, Xin Gao, Yuan I. Chang, Kyle J. Hewitt, Rajendran Sanalkumar, Rajalekshmi Prathibha, Erik A. Ranheim, Colin N. Dewey, Jing Zhang, Emery H. Bresnick*

*此作品的通信作者

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

Cis-element encyclopedias provide information on phenotypic diversity and disease mechanisms. Although ciselement polymorphisms and mutations are instructive, deciphering function remains challenging. Mutation of an intronic GATA motif (+9.5) in GATA2, encoding a master regulator of hematopoiesis, underlies an immunodeficiency associated with myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). Whereas an inversion relocalizes another GATA2 cis-element (-77) to the proto-oncogene EVI1, inducing EVI1 expression and AML, whether this reflects ectopic or physiological activity is unknown. We describe a mouse strain that decouples -77 function from proto-oncogene deregulation. The -77-/- mice exhibited a novel phenotypic constellation including late embryonic lethality and anemia. The -77 established a vital sector of the myeloid progenitor transcriptome, conferring multipotentiality. Unlike the +9.5-/- embryos, hematopoietic stem cell genesis was unaffected in -77-/- embryos. These results illustrate a paradigm in which cis-elements in a locus differentially control stem and progenitor cell transitions, and therefore the individual cis-element alterations cause unique and overlapping disease phenotypes.

原文English
文章編號e1500503
期刊Science Advances
1
發行號8
DOIs
出版狀態Published - 9月 2015

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