Adhesion-growth factor crosstalk regulates AURKB activation and ERK signalling in re-adherent fibroblasts

J Biosci. 2021:46:46.

Abstract

Aurora kinases despite their similarity have distinct roles in the cell cycle, which is regulated by cell-matrix adhesion and growth factors. This study reveals loss of adhesion and re-adhesion to differentially regulate Aurora kinases. AURKB activation that drops on the loss of adhesion recovers on re-adhesion in serumdeprived conditions but not in the presence of serum growth factors. A rapid 30 min serum treatment of serumdeprived cells blocks the adhesion-dependent recovery of AURKB, which negatively correlates with Erk activation. AZD mediated inhibition of AURKB in serum-deprived re-adherent cells promotes Erk activation and membrane ruffling, comparable to presence of serum. These studies thus define a novel adhesion-growth factor-dependent regulation of AURKB that controls adhesion-dependent Erk activation in re-adherent fibroblasts.

MeSH terms

  • Animals
  • Aurora Kinase A / genetics*
  • Aurora Kinase A / metabolism
  • Aurora Kinase B / genetics*
  • Aurora Kinase B / metabolism
  • Cell Adhesion / drug effects
  • Cell Cycle / drug effects
  • Cell Cycle / genetics
  • Cell Line
  • Culture Media, Serum-Free / pharmacology
  • Embryo, Mammalian
  • Fibroblasts / cytology
  • Fibroblasts / drug effects*
  • Fibroblasts / metabolism
  • Gene Expression Regulation
  • Intercellular Signaling Peptides and Proteins / pharmacology*
  • MAP Kinase Signaling System
  • Mice
  • Mitogen-Activated Protein Kinase 1 / genetics*
  • Mitogen-Activated Protein Kinase 1 / metabolism
  • Mitogen-Activated Protein Kinase 3 / genetics*
  • Mitogen-Activated Protein Kinase 3 / metabolism

Substances

  • Culture Media, Serum-Free
  • Intercellular Signaling Peptides and Proteins
  • Aurka protein, mouse
  • Aurkb protein, mouse
  • Aurora Kinase A
  • Aurora Kinase B
  • Mapk1 protein, mouse
  • Mapk3 protein, mouse
  • Mitogen-Activated Protein Kinase 1
  • Mitogen-Activated Protein Kinase 3