Dynamic 14-3-3/client protein interactions integrate survival and apoptotic pathways

Semin Cancer Biol. 2006 Jun;16(3):193-202. doi: 10.1016/j.semcancer.2006.03.003. Epub 2006 Apr 1.

Abstract

The serine/threonine binding protein, 14-3-3, possesses a diverse array of client proteins. It is involved in the regulation of apoptosis through multiple interactions with proteins of the core mitochondrial machinery, pro-apoptotic transcription factors, and their upstream signaling pathways. 14-3-3 coordinates with survival kinases to inhibit multiple pro-apoptotic molecules. One prominent mechanism for the suppression of apoptosis is through 14-3-3-mediated sequestration of pro-apoptotic client proteins. On the other hand, cellular stresses appear to signal through the inhibition of 14-3-3 function to exert their pro-apoptotic effect. Global inhibition of 14-3-3/client protein interaction induces apoptosis, and stands as an attractive intervention in diseases involving overactive survival signaling pathways. Because dysregulation of 14-3-3 has been associated with poor survival of cancer patients, targeting 14-3-3 may provide a novel therapeutic approach for the treatment of cancer.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • 14-3-3 Proteins / drug effects
  • 14-3-3 Proteins / metabolism*
  • Antineoplastic Agents / pharmacology
  • Apoptosis / physiology*
  • Caspases / metabolism
  • Cell Cycle / physiology
  • Cell Survival
  • Humans
  • Ligands
  • Neoplasms / drug therapy
  • Neoplasms / metabolism
  • Phosphorylation
  • Protein Binding
  • Protein Serine-Threonine Kinases
  • Proto-Oncogene Proteins c-bcl-2 / metabolism
  • Signal Transduction / physiology*

Substances

  • 14-3-3 Proteins
  • Antineoplastic Agents
  • Ligands
  • Proto-Oncogene Proteins c-bcl-2
  • Protein Serine-Threonine Kinases
  • Caspases