Washkowitz, A.J.* ; Schall, C.* ; Zhang, K.L.* ; Wurst, W. ; Floß, T. ; Mager, J.* ; Papaioannou, V.E.*
Mga is essential for the survival of pluripotent cells during peri-implantation development.
Development 142, 31-40 (2015)
The maintenance and control of pluripotency is of great interest in stem cell biology. The dual specificity T-box/basic-helix-loop-helix-zipper transcription factor Mga is expressed in the pluripotent cells of the inner cell mass (ICM) and epiblast of the peri-implantation mouse embryo, but its function has not been investigated previously. Here, we use a loss-of-function allele and RNA knockdown to demonstrate that Mga depletion leads to the death of proliferating pluripotent ICM cells in vivo and in vitro, and the death of embryonic stem cells (ESCs) in vitro. Additionally, quiescent pluripotent cells lacking Mga are lost during embryonic diapause. Expression of Odc1, the rate-limiting enzyme in the conversion of ornithine into putrescine in the synthesis of polyamines, is reduced in Mga mutant cells, and the survival of mutant ICM cells as well as ESCs is rescued in culture by the addition of exogenous putrescine. These results suggest a mechanism whereby Mga influences pluripotent cell survival through regulation of the polyamine pool in pluripotent cells of the embryo, whether they are in a proliferative or quiescent state.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Basic-helix-loop-helix-zipper ; Escs ; Mga ; Mouse ; Odc ; Pluripotency ; T-box ; Transcription Factor; Embryonic Stem-cells; Ornithine-decarboxylase Gene; Early Mouse Development; C-myc Expression; Transcription Factor; Self-renewal; Polyamine Metabolism; Ground-state; Max; Network
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2015
Prepublished im Jahr
HGF-Berichtsjahr
2015
ISSN (print) / ISBN
0950-1991
e-ISSN
1477-9129
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 142,
Heft: 1,
Seiten: 31-40
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Company of Biologists
Verlagsort
Cambridge
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
30204 - Cell Programming and Repair
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-520600-001
G-500500-001
Förderungen
Copyright
Erfassungsdatum
2015-01-05