[PMID]: | 28818668 |
[Au] Autor: | Amiel AR; Johnston H; Chock T; Dahlin P; Iglesias M; Layden M; Röttinger E; Martindale MQ |
[Ad] Endereço: | Université Côte d'Azur, CNRS, INSERM, Institute for Research on Cancer and Aging, Nice, France. |
[Ti] Título: | A bipolar role of the transcription factor ERG for cnidarian germ layer formation and apical domain patterning. |
[So] Source: | Dev Biol;430(2):346-361, 2017 10 15. |
[Is] ISSN: | 1095-564X |
[Cp] País de publicação: | United States |
[La] Idioma: | eng |
[Ab] Resumo: | Germ layer formation and axial patterning are biological processes that are tightly linked during embryonic development of most metazoans. In addition to canonical WNT, it has been proposed that ERK-MAPK signaling is involved in specifying oral as well as aboral territories in cnidarians. However, the effector and the molecular mechanism underlying latter phenomenon is unknown. By screening for potential effectors of ERK-MAPK signaling in both domains, we identified a member of the ETS family of transcription factors, Nverg that is bi-polarily expressed prior to gastrulation. We further describe the crucial role of NvERG for gastrulation, endomesoderm as well as apical domain formation. The molecular characterization of the obtained NvERG knock-down phenotype using previously described as well as novel potential downstream targets, provides evidence that a single transcription factor, NvERG, simultaneously controls expression of two different sets of downstream targets, leading to two different embryonic gene regulatory networks (GRNs) in opposite poles of the developing embryo. We also highlight the molecular interaction of cWNT and MEK/ERK/ERG signaling that provides novel insight into the embryonic axial organization of Nematostella, and show a cWNT repressive role of MEK/ERK/ERG signaling in segregating the endomesoderm in two sub-domains, while a common input of both pathways is required for proper apical domain formation. Taking together, we build the first blueprint for a global cnidarian embryonic GRN that is the foundation for additional gene specific studies addressing the evolution of embryonic and larval development. |
[Mh] Termos MeSH primário: |
Regulação da Expressão Gênica no Desenvolvimento Camadas Germinativas/crescimento & desenvolvimento Anêmonas-do-Mar/genética Fatores de Transcrição/fisiologia
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[Mh] Termos MeSH secundário: |
Animais Padronização Corporal DNA Complementar/genética Embrião não Mamífero/metabolismo Embrião não Mamífero/ultraestrutura Fatores de Crescimento de Fibroblastos/fisiologia Gastrulação/genética Técnicas de Silenciamento de Genes Redes Reguladoras de Genes Camadas Germinativas/metabolismo Sistema de Sinalização das MAP Quinases Mesoderma/metabolismo Anêmonas-do-Mar/embriologia Anêmonas-do-Mar/ultraestrutura Via de Sinalização Wnt
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[Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, N.I.H., EXTRAMURAL |
[Nm] Nome de substância:
| 0 (DNA, Complementary); 0 (Transcription Factors); 62031-54-3 (Fibroblast Growth Factors) |
[Em] Mês de entrada: | 1710 |
[Cu] Atualização por classe: | 171111 |
[Lr] Data última revisão:
| 171111 |
[Sb] Subgrupo de revista: | IM |
[Da] Data de entrada para processamento: | 170819 |
[St] Status: | MEDLINE |
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