Transcriptional repression of the anti-apoptotic survivin gene by wild type p53

J Biol Chem. 2002 Feb 1;277(5):3247-57. doi: 10.1074/jbc.M106643200. Epub 2001 Nov 19.

Abstract

Survivin is a member of the inhibitor of apoptosis family. This apoptosis inhibitor also has an evolutionarily conserved role as a mitotic spindle checkpoint protein. Previous studies on p53-repressed genes have implicated several genes involved in the G(2)/M transition of the cell cycle as targets of negative regulation by p53. However, few targets of p53 repression that are anti-apoptotic have been identified. This study identifies the anti-apoptotic survivin gene as a p53-repressed gene. Notably, Survivin repression by p53 is shown to be distinct from p53-dependent growth arrest. Chromatin immunoprecipitations indicate that p53 binds the survivin promoter in vivo; immunobinding studies indicate that this site overlaps with a binding site for E2F transcription factors and is subtly distinct from a canonical p53-transactivating element. The survivin-binding site contains a 3-nucleotide spacer between the two decamer "half-sites" of the p53 consensus element; deletion of this spacer is sufficient to convert the survivin site into a transactivating element. Finally, we show that overexpression of Survivin in cells sensitive to p53-dependent cell death markedly inhibits apoptosis induced by ultraviolet light. The identification of survivin as a p53 repressed gene should aid in the elucidation of the contribution of transcriptional repression to p53-dependent apoptosis.

Publication types

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

MeSH terms

  • Adenocarcinoma
  • Animals
  • Apoptosis / genetics*
  • Base Sequence
  • Breast Neoplasms
  • Cell Cycle / genetics
  • Cell Cycle Proteins*
  • Chromatin / genetics
  • Chromatin / ultrastructure
  • Chromosomal Proteins, Non-Histone / genetics*
  • Cyclin-Dependent Kinase Inhibitor p21
  • Cyclin-Dependent Kinases / metabolism
  • Cyclins / deficiency
  • Cyclins / genetics
  • Cyclins / metabolism
  • DNA-Binding Proteins / metabolism
  • E2F Transcription Factors
  • Female
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Inhibitor of Apoptosis Proteins
  • Lung Neoplasms
  • Mice
  • Mice, Knockout
  • Microtubule-Associated Proteins*
  • Molecular Sequence Data
  • Neoplasm Proteins
  • Promoter Regions, Genetic
  • Recombinant Proteins / metabolism
  • Reverse Transcriptase Polymerase Chain Reaction
  • Spindle Apparatus / genetics
  • Survivin
  • Transcription Factors / metabolism
  • Transcription, Genetic*
  • Transfection
  • Tumor Cells, Cultured
  • Tumor Suppressor Protein p53 / metabolism*

Substances

  • BIRC5 protein, human
  • CDKN1A protein, human
  • Cdkn1a protein, mouse
  • Cell Cycle Proteins
  • Chromatin
  • Chromosomal Proteins, Non-Histone
  • Cyclin-Dependent Kinase Inhibitor p21
  • Cyclins
  • DNA-Binding Proteins
  • E2F Transcription Factors
  • Inhibitor of Apoptosis Proteins
  • Microtubule-Associated Proteins
  • Neoplasm Proteins
  • Recombinant Proteins
  • Survivin
  • Transcription Factors
  • Tumor Suppressor Protein p53
  • Cyclin-Dependent Kinases