Id proteins in cell growth and tumorigenesis

Cancer Cell. 2003 Jun;3(6):525-30. doi: 10.1016/s1535-6108(03)00141-7.


Since the gene encoding Id1 was cloned in 1990, Id proteins have been implicated in regulating a variety of cellular processes, including cellular growth, senescence, differentiation, apoptosis, angiogenesis, and neoplastic transformation. The development of knockout and transgenic animal models for many members of the Id gene family has been particularly useful in sorting out the biologic relevance of these genes and their expression during normal development, malignant transformation, and tumor progression. Here we review the current understanding of Id gene function, the biologic consequences of Id gene expression, and the implications for Id gene regulation of cell growth and tumorigenesis.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.
  • Review

MeSH terms

  • Animals
  • Apoptosis
  • Cell Cycle
  • Cell Differentiation
  • Cell Division / physiology
  • Cell Transformation, Neoplastic
  • Cellular Senescence
  • Gene Expression Regulation
  • Helix-Loop-Helix Motifs
  • Humans
  • Inhibitor of Differentiation Protein 1
  • Mice
  • Neoplasms / metabolism*
  • Repressor Proteins*
  • Transcription Factors / metabolism*


  • ID1 protein, human
  • Idb1 protein, mouse
  • Inhibitor of Differentiation Protein 1
  • Repressor Proteins
  • Transcription Factors