Daughter-cell-specific modulation of nuclear pore complexes controls cell cycle entry during asymmetric division

Nat Cell Biol. 2018 Apr;20(4):432-442. doi: 10.1038/s41556-018-0056-9. Epub 2018 Mar 12.

Abstract

The acquisition of cellular identity is coupled to changes in the nuclear periphery and nuclear pore complexes (NPCs). Whether and how these changes determine cell fate remain unclear. We have uncovered a mechanism that regulates NPC acetylation to direct cell fate after asymmetric division in budding yeast. The lysine deacetylase Hos3 associates specifically with daughter cell NPCs during mitosis to delay cell cycle entry (Start). Hos3-dependent deacetylation of nuclear basket and central channel nucleoporins establishes daughter-cell-specific nuclear accumulation of the transcriptional repressor Whi5 during anaphase and perinuclear silencing of the G1/S cyclin gene CLN2 in the following G1 phase. Hos3-dependent coordination of both events restrains Start in daughter, but not in mother, cells. We propose that deacetylation modulates transport-dependent and transport-independent functions of NPCs, leading to differential cell cycle progression in mother and daughter cells. Similar mechanisms might regulate NPC functions in specific cell types and/or cell cycle stages in multicellular organisms.

Publication types

  • Research Support, Non-U.S. Gov't
  • Video-Audio Media

MeSH terms

  • Acetylation
  • Cell Cycle*
  • Cyclins / genetics
  • Cyclins / metabolism
  • Gene Expression Regulation, Fungal
  • Histone Deacetylases / genetics
  • Histone Deacetylases / metabolism
  • Mitosis*
  • Nuclear Pore / genetics
  • Nuclear Pore / metabolism*
  • Protein Processing, Post-Translational
  • Repressor Proteins / genetics
  • Repressor Proteins / metabolism
  • Saccharomyces cerevisiae / genetics
  • Saccharomyces cerevisiae / growth & development
  • Saccharomyces cerevisiae / metabolism*
  • Saccharomyces cerevisiae Proteins / genetics
  • Saccharomyces cerevisiae Proteins / metabolism*
  • Signal Transduction
  • Time Factors

Substances

  • CLN2 protein, S cerevisiae
  • Cyclins
  • Repressor Proteins
  • Saccharomyces cerevisiae Proteins
  • Whi5 protein, S cerevisiae
  • Histone Deacetylases
  • Hos3 protein, S cerevisiae