Expression of the dominant-negative regulator Id4 is induced during adipocyte differentiation

Heping Chen, Yi Chinn Weng, Gina C. Schatteman, Laura Sanders, Robert J. Christy, Barbara A. Christy

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Expression of the Id4 gene was investigated during differentiation of 3T3-L1 preadipocytes into mature adipocytes. Id4 is a member of a family encoding non-DNA binding helix-loop-helix proteins proposed to inhibit the activity of basic HLH (bHLH) proteins important in many developmental processes. We show here that Id4 expression is low in confluent preadipocytes and rapidly induced by treatment with the combination of hormones which causes differentiation into mature adipocytes. Id4 expression is also induced by treatment with individual hormones, especially dexamathasone. Id4 mRNA can be detected in mouse and human adipose tissue. Genes encoding E-proteins (bHLH proteins known to interact with and be regulated by Id proteins) are expressed and regulated during differentiation in 3T3-L1 cells. These data suggest that the Id4 transcriptional regulator is playing a role in adipose cell differentiation and suggest that DNA-binding HLH proteins may also be important in regulation of differentiation of these cells.

Original languageEnglish (US)
Pages (from-to)614-619
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume256
Issue number3
DOIs
StatePublished - Mar 24 1999

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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