The Cep63 paralogue Deup1 enables massive de novo centriole biogenesis for vertebrate multiciliogenesis

Nat Cell Biol. 2013 Dec;15(12):1434-44. doi: 10.1038/ncb2880. Epub 2013 Nov 17.

Abstract

Dense multicilia in higher vertebrates are important for luminal flow and the removal of thick mucus. To generate hundreds of basal bodies for multiciliogenesis, specialized terminally differentiated epithelial cells undergo massive centriole amplification. In proliferating cells, however, centriole duplication occurs only once per cell cycle. How cells ensure proper regulation of centriole biogenesis in different contexts is poorly understood. We report that the centriole amplification is controlled by two duplicated genes, Cep63 and Deup1. Cep63 regulates mother-centriole-dependent centriole duplication. Deup1 governs deuterosome assembly to mediate large-scale de novo centriole biogenesis. Similarly to Cep63, Deup1 binds to Cep152 and then recruits Plk4 to activate centriole biogenesis. Phylogenetic analyses suggest that Deup1 diverged from Cep63 in a certain ancestor of lobe-finned fishes during vertebrate evolution and was subsequently adopted by tetrapods. Thus, the Cep63 gene duplication has enabled mother-centriole-independent assembly of the centriole duplication machinery to satisfy different requirements for centriole number.

MeSH terms

  • Animals
  • Cell Cycle Proteins / genetics
  • Cell Cycle Proteins / metabolism*
  • Cell Cycle Proteins / physiology*
  • Cell Line, Tumor
  • Centrioles / physiology*
  • Cilia / physiology*
  • Epithelial Cells / physiology
  • Epithelial Cells / ultrastructure
  • Evolution, Molecular
  • Gene Knockdown Techniques
  • HEK293 Cells
  • Humans
  • Mice
  • Microtubule-Associated Proteins
  • Phylogeny
  • Primary Cell Culture
  • Protein Transport
  • Protein-Serine-Threonine Kinases / metabolism
  • Trachea / cytology
  • Xenopus

Substances

  • Cell Cycle Proteins
  • Cep63 protein, mouse
  • Deup1 protein, mouse
  • Microtubule-Associated Proteins
  • Plk4 protein, mouse
  • Protein-Serine-Threonine Kinases