ANKHD1 regulates cell cycle progression and proliferation in multiple myeloma cells

FEBS Lett. 2012 Dec 14;586(24):4311-8. doi: 10.1016/j.febslet.2012.10.037. Epub 2012 Nov 6.

Abstract

ANKHD1 is a multiple ankyrin repeat containing protein, highly expressed in cancers, such as acute leukemia. The present study was undertaken to determine the expression and functional significance of ANKHD1 in human Multiple Myeloma (MM). We found that ANKHD1 is highly expressed in MM patient cells and cell lines. In vitro, lentiviral mediated ANKHD1-shRNA inhibited proliferation and delayed S to G2M cell cycle progression in glucocorticoid resistant (U266) and sensitive (MM1S) MM cells. Further ANKHD1 silencing resulted in upregulation of cyclin dependent kinase inhibitor p21 irrespective of the p53 status of the MM cell lines. These data suggest that ANKHD1 might have a role in MM cell proliferation and cell cycle progression by regulating expression of p21.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Cycle*
  • Cell Line, Tumor
  • Cell Proliferation*
  • Cyclin-Dependent Kinase Inhibitor p21 / metabolism*
  • Gene Silencing
  • Glucocorticoids / therapeutic use
  • Humans
  • Multiple Myeloma / genetics
  • Multiple Myeloma / metabolism*
  • RNA, Small Interfering / genetics
  • RNA, Small Interfering / metabolism
  • RNA-Binding Proteins / biosynthesis*
  • RNA-Binding Proteins / genetics
  • Tumor Suppressor Protein p53 / metabolism
  • Up-Regulation

Substances

  • ANKHD1 protein, human
  • Cyclin-Dependent Kinase Inhibitor p21
  • Glucocorticoids
  • RNA, Small Interfering
  • RNA-Binding Proteins
  • Tumor Suppressor Protein p53