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Updated: Jun 2, 2026

Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins
08:12

Utilizing a Comprehensive Immunoprecipitation Enrichment System to Identify an Endogenous Post-translational Modification Profile for Target Proteins

Published on: January 8, 2018

Post-translational modifications of PTEN and their potential therapeutic implications

G Singh1, A M Chan

  • 1Department of Oncological Sciences, The Mount Sinai School of Medicine, One, Gustave L. Levy Place, Box#1130, New York, NY 10029, USA.

Current Cancer Drug Targets
|April 14, 2011
PubMed

Insights

PTEN, a crucial tumor suppressor, regulates cell growth and survival. Its post-translational modifications are key to understanding its role in cancer and developing new therapies.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • PTEN (Phosphatase and tensin homolog) is a tumor suppressor gene located on chromosome 10q23.31, frequently altered in glioblastoma and prostate cancer.
  • PTEN functions as a lipid phosphatase, regulating the phosphatidylinositol 3-kinase (PI3K) pathway, which controls cell proliferation, survival, and differentiation.
  • Mutations in PTEN are the cause of Cowden Syndrome, highlighting its critical role in human health.

Purpose of the Study:

  • To provide a comprehensive review of the diverse post-translational modifications (PTMs) of PTEN.
  • To elucidate the biological relevance of PTEN PTMs in normal and cancerous cells.
  • To discuss the therapeutic potential of modulating PTEN PTMs for cancer treatment.

Main Methods:

  • Literature review of studies characterizing PTEN structure, function, and PTMs.
  • Analysis of research on the impact of PTMs on PTEN's catalytic activity and localization.
  • Synthesis of findings related to PTEN's role in various cancers and potential therapeutic strategies.

Main Results:

  • PTEN protein structure includes catalytic and membrane-binding domains, with regulatory regions influencing its activity and localization.
  • PTEN undergoes various PTMs, including phosphorylation, ubiquitination, acetylation, and redox modifications, which fine-tune its biochemical properties.
  • These modifications significantly impact PTEN's tumor-suppressive functions and its involvement in cancer development.

Conclusions:

  • PTEN's diverse post-translational modifications are critical regulators of its function in both normal physiology and cancer.
  • Understanding these modifications offers potential therapeutic avenues for targeting PTEN in cancer treatment.
  • Targeting PTEN PTMs represents a promising strategy for developing novel anti-cancer therapies.

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