FGF mediated mapk and pi3k/akt signals make distinct contributions to pluripotency and the establishment of neural crest

Lauren Geary, Carole Labonne*

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Early vertebrate embryos possess cells with the potential to generate all embryonic cell types. While this pluripotency is progressively lost as cells become lineage restricted, Neural Crest cells retain broad developmental potential. Here, we provide novel insights into signals essential for both pluripotency and neural crest formation in Xenopus. We show that FGF signaling controls a subset of genes expressed by pluripotent blastula cells, and find a striking switch in the signaling cascades activated by FGF signaling as cells lose pluripotency and commence lineage restriction. Pluripotent cells display and require Map Kinase signaling, whereas PI3 Kinase/Akt signals increase as developmental potential is restricted, and are required for transit to certain lineage restricted states. Importantly, retaining a high Map Kinase/low Akt signaling profile is essential for establishing Neural Crest stem cells. These findings shed important light on the signal- mediated control of pluripotency and the molecular mechanisms governing genesis of Neural Crest.

Original languageEnglish (US)
Article numbere33845
JournaleLife
Volume7
DOIs
StatePublished - Jan 19 2018

Fingerprint

Neural Crest
Phosphotransferases
Blastula
Neural Stem Cells
Cell Lineage
Xenopus
Stem cells
Phosphatidylinositol 3-Kinases
Vertebrates
Embryonic Structures
Genes
Switches

ASJC Scopus subject areas

  • Neuroscience(all)
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

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abstract = "Early vertebrate embryos possess cells with the potential to generate all embryonic cell types. While this pluripotency is progressively lost as cells become lineage restricted, Neural Crest cells retain broad developmental potential. Here, we provide novel insights into signals essential for both pluripotency and neural crest formation in Xenopus. We show that FGF signaling controls a subset of genes expressed by pluripotent blastula cells, and find a striking switch in the signaling cascades activated by FGF signaling as cells lose pluripotency and commence lineage restriction. Pluripotent cells display and require Map Kinase signaling, whereas PI3 Kinase/Akt signals increase as developmental potential is restricted, and are required for transit to certain lineage restricted states. Importantly, retaining a high Map Kinase/low Akt signaling profile is essential for establishing Neural Crest stem cells. These findings shed important light on the signal- mediated control of pluripotency and the molecular mechanisms governing genesis of Neural Crest.",
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FGF mediated mapk and pi3k/akt signals make distinct contributions to pluripotency and the establishment of neural crest. / Geary, Lauren; Labonne, Carole.

In: eLife, Vol. 7, e33845, 19.01.2018.

Research output: Contribution to journalArticle

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