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HoxB4 in hematopoietic stem cells


ABSTRACT: Ectopic expression of homeodomain transcription factor HoxB4 in mouse ES cells enhances in vitro development of hematopoietic stem cells (HSCs). Mouse ES cells were differentiated for 6 days in EBs, then c-Kit+CD41+ hematopoietic precursor cells were isolated, plated onto OP9 cells, and transduced with the GFP control or 3M-CM-^WFLAG-tagged HoxB4 retrovirus. At day 12 of the co-culture with OP9 cells, c-Kit+ progenitor cells overexpressing HoxB4 were collected by magnetic-activated cell sorting (MACS) and subjected to a ChIP-chip and microarray analysis. The purity of the recovered c-Kit+ cells was more than 95% as judged by flow cytometry.

ORGANISM(S): Mus musculus

SUBMITTER: Takaho Endo 

PROVIDER: E-GEOD-26653 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Genome-wide analysis of target genes regulated by HoxB4 in hematopoietic stem and progenitor cells developing from embryonic stem cells.

Oshima Motohiko M   Endoh Mitsuhiro M   Endo Takaho A TA   Toyoda Tetsuro T   Nakajima-Takagi Yaeko Y   Sugiyama Fumihiro F   Koseki Haruhiko H   Kyba Michael M   Iwama Atsushi A   Osawa Mitsujiro M  

Blood 20110222 15


Forced expression of the transcription factor HoxB4 has been shown to enhance the self-renewal capacity of mouse bone marrow hematopoietic stem cells (HSCs) and confer a long-term repopulating capacity to yolk sac and embryonic stem (ES) cell-derived hematopoietic precursors. The fact that ES cell-derived precursors do not repopulate bone marrow without HoxB4 underscores an important role for HoxB4 in the maturation of ES-derived hematopoietic precursors into long-term repopulating HSCs. However  ...[more]

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