The Hedgehog-inducible ubiquitin ligase subunit WSB-1 modulates thyroid hormone activation and PTHrP secretion in the developing growth plate

  • Monica Dentice
  • , Amitabha Bandyopadhyay
  • , Balázs Gereben
  • , Isabelle Callebaut
  • , Marcelo A. Christoffolete
  • , Brian W. Kim
  • , Sahar Nissim
  • , Jean Paul Mornon
  • , Ann Marie Zavacki
  • , Anikó Zeöld
  • , Luciane P. Capelo
  • , Cyntia Curcio-Morelli
  • , Rogério Ribeiro
  • , John W. Harney
  • , Clifford J. Tabin
  • , Antonio C. Bianco

Research output: Contribution to journalArticlepeer-review

201 Scopus citations

Abstract

WSB-1 is a SOCS-box-containing WD-40 protein of unknown function that is induced by Hedgehog signalling in embryonic structures during chicken development. Here we show that WSB-1 is part of an E3 ubiquitin ligase for the thyroid-hormone-activating type 2 iodothyronine deiodinase (D2). The WD-40 propeller of WSB-1 recognizes an 18-amino-acid loop in D2 that confers metabolic instability, whereas the SOCS-box domain mediates its interaction with a ubiquitinating catalytic core complex, modelled as Elongin BC-Cul5-Rbx1 (ECSWSB-1). In the developing tibial growth plate, Hedgehog-stimulated D2 ubiquitination via ECSWSB-1 induces parathyroid hormone-related peptide (PTHrP), thereby regulating chondrocyte differentiation. Thus, ECSWSB-1 mediates a mechanism by which 'systemic' thyroid hormone can effect local control of the Hedgehog-PTHrP negative feedback loop and thus skeletogenesis.

Original languageEnglish (US)
Pages (from-to)698-705
Number of pages8
JournalNature Cell Biology
Volume7
Issue number7
DOIs
StatePublished - Jul 2005
Externally publishedYes

ASJC Scopus subject areas

  • Cell Biology

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