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Ptch2/Gas1 and Ptch1/Boc differentially regulate Hedgehog signalling in murine primordial germ cell migration

Author

Listed:
  • Yeonjoo Kim

    (St. George’s, University of London)

  • Jiyoung Lee

    (St. George’s, University of London)

  • Maisa Seppala

    (Faculty of Dental, Oral and Craniofacial Sciences King’s College London Floor 27, Guy’s Hospital)

  • Martyn T. Cobourne

    (Faculty of Dental, Oral and Craniofacial Sciences King’s College London Floor 27, Guy’s Hospital)

  • Soo-Hyun Kim

    (St. George’s, University of London)

Abstract

Gas1 and Boc/Cdon act as co-receptors in the vertebrate Hedgehog signalling pathway, but the nature of their interaction with the primary Ptch1/2 receptors remains unclear. Here we demonstrate, using primordial germ cell migration in mouse as a developmental model, that specific hetero-complexes of Ptch2/Gas1 and Ptch1/Boc mediate the process of Smo de-repression with different kinetics, through distinct modes of Hedgehog ligand reception. Moreover, Ptch2-mediated Hedgehog signalling induces the phosphorylation of Creb and Src proteins in parallel to Gli induction, identifying a previously unknown Ptch2-specific signal pathway. We propose that although Ptch1 and Ptch2 functionally overlap in the sequestration of Smo, the spatiotemporal expression of Boc and Gas1 may determine the outcome of Hedgehog signalling through compartmentalisation and modulation of Smo-downstream signalling. Our study identifies the existence of a divergent Hedgehog signal pathway mediated by Ptch2 and provides a mechanism for differential interpretation of Hedgehog signalling in the germ cell niche.

Suggested Citation

  • Yeonjoo Kim & Jiyoung Lee & Maisa Seppala & Martyn T. Cobourne & Soo-Hyun Kim, 2020. "Ptch2/Gas1 and Ptch1/Boc differentially regulate Hedgehog signalling in murine primordial germ cell migration," Nature Communications, Nature, vol. 11(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15897-3
    DOI: 10.1038/s41467-020-15897-3
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