Translational Control in Echinoderms: The Calm Before the Storm

  • Patrick CormierEmail author
  • Héloïse Chassé
  • Bertrand Cosson
  • Odile Mulner-Lorillon
  • Julia Morales


Starfish oocytes and sea urchin eggs are two different echinoderm model systems that have helped to address the control of gene expression at the translational level in relation to cell cycle regulation. This review describes the different mechanisms that control the translation of cyclin B mRNA during starfish meiotic maturation and sea urchin fertilization. During starfish meiotic maturation, cyclin B translation specifically depends on a CPEB regulation pathway whereas global protein synthesis appears to be regulated by the mTOR pathway. Three translation factors, eIF4F, eIF2α and eEF2, are activated in vivo in response to sea urchin egg fertilization, leading to an increase of protein synthesis. The mTOR signaling pathway involves in 4E-BP degradation and fine-tuning orchestration of cyclin B mRNA translation following fertilization is conserved in two sea urchin species separated by 20 millions years of evolutionary time. Combining biochemical, structural, cellular, and mathematical approaches, the analysis of the spatio-temporal dynamics of protein synthesis activation in different echinoderm model systems should provide insights into essential mRNA translation regulation occurring in physiological conditions.


Meiotic Maturation Cytoplasmic Polyadenylation Element Binding Protein Global Protein Synthesis Starfish Oocyte eEF2 Kinase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We apologize to those whose work was not cited or discussed here because of the broad scope of this review and space limitation. Research in the authors’ laboratories is supported by “La Ligue contre le Cancer (coordination du Grand Ouest (comités Finistère, Côtes d’Armor, Deux-Sèvres, Morbihan)),” the “Région Bretagne” and the “Conseil Général du Finistère.” B. Cosson is supported by Université Sorbonne Paris Cité (USPC) by the Research Project 2014 grant and 2015 International Fellowship. H. Chassé is a Ph.D. fellow supported by the Région Bretagne.


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Patrick Cormier
    • 1
    • 2
    Email author
  • Héloïse Chassé
    • 1
    • 2
  • Bertrand Cosson
    • 1
    • 2
    • 3
  • Odile Mulner-Lorillon
    • 1
    • 2
  • Julia Morales
    • 1
    • 2
  1. 1.Sorbonne Universités, UPMC Univ Paris 06, UMR 8227, Integrative Biology of Marine Models, Translation Cell Cycle and Development, Station Biologique de Roscoff, CS 90074Roscoff CedexFrance
  2. 2.CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de RoscoffRoscoff CedexFrance
  3. 3.Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell FateParisFrance

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