Signaling from the sympathetic nervous system regulates hematopoietic stem cell emergence during embryogenesis

The first adult-repopulating hematopoietic stem cells (HSCs) emerge in the aorta-gonads-mesonephros (AGM) region of the embryo. We have recently identified the transcription factor Gata3 as being upregulated in this tissue specifically at the time of HSC emergence. We now demonstrate that the produc...

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Vydáno v:Cell stem cell Ročník 11; číslo 4; s. 554
Hlavní autoři: Fitch, Simon R, Kimber, Gillian M, Wilson, Nicola K, Parker, Aimée, Mirshekar-Syahkal, Bahar, Göttgens, Berthold, Medvinsky, Alexander, Dzierzak, Elaine, Ottersbach, Katrin
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 05.10.2012
Témata:
Adult Stem Cells - physiology
Animals
Aorta - embryology
Catecholamines - metabolism
Cell Line
Embryo, Mammalian
Embryonic Development - physiology
GATA3 Transcription Factor - genetics
GATA3 Transcription Factor - metabolism
Gene Expression Regulation, Developmental
Gonads - embryology
Hematopoietic Stem Cells - physiology
Mesonephros - embryology
Mice
Mice, Knockout
Signal Transduction
Stem Cell Niche
Sympathetic Nervous System - metabolism
ISSN:1875-9777, 1875-9777
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Shrnutí:The first adult-repopulating hematopoietic stem cells (HSCs) emerge in the aorta-gonads-mesonephros (AGM) region of the embryo. We have recently identified the transcription factor Gata3 as being upregulated in this tissue specifically at the time of HSC emergence. We now demonstrate that the production of functional and phenotypic HSCs in the AGM is impaired in the absence of Gata3. Furthermore, we show that this effect on HSC generation is secondary to the role of Gata3 in the production of catecholamines, the mediators of the sympathetic nervous system (SNS), thus making these molecules key components of the AGM HSC niche. These findings demonstrate that the recently described functional interplay between the hematopoietic system and the SNS extends to the earliest stages of their codevelopment and highlight the fact that HSC development needs to be viewed in the context of the development of other organs.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1875-9777
1875-9777
DOI:10.1016/j.stem.2012.07.002