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PTEN: Redefining tumor suppressor functions in cancer by regulating transcription

J S Fathima Hameed1, Sougata Ghosh Chowdhury2, Parimal Karmakar3

  • 1BRIC-RGCB, Cancer Research Program, Thycaud, Poojappura, Thiruvananthapuram, Kerala 695014, India; Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.

Biochimica Et Biophysica Acta. Reviews on Cancer
|July 9, 2026
PubMed

Insights

The tumor suppressor PTEN regulates gene expression and chromatin functions. Understanding its transcriptional role offers new strategies for targeting PTEN deficiency in cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • The tumor suppressor PTEN is a dual-specificity phosphatase crucial for controlling cell growth and proliferation.
  • PTEN mutations are frequent in cancers, leading to loss-of-function and altered gene expression.
  • PTEN's role as a transcriptional regulator is underappreciated despite its known functions.

Purpose of the Study:

  • To review the mechanisms by which PTEN influences gene expression.
  • To focus on PTEN's evolving chromatin functions in transcriptional regulation.
  • To highlight the potential for targeting PTEN deficiency in cancer based on its regulatory roles.

Main Methods:

  • Literature review of PTEN's functions in gene expression.
  • Analysis of PTEN's phosphatase-dependent and independent mechanisms.
  • Examination of PTEN's interaction with chromatin and transcriptional machinery.

Main Results:

  • PTEN acts as a transcriptional regulator through various mechanisms.
  • PTEN's chromatin functions are integral to its tumor suppressor activity.
  • Evidence suggests PTEN influences gene expression patterns in cancer cells.

Conclusions:

  • PTEN's role in regulating transcription and chromatin is critical for its tumor suppressor function.
  • Further investigation into PTEN's transcriptional roles can reveal novel therapeutic strategies.
  • Targeting PTEN deficiency by leveraging its transcriptional regulatory functions holds promise for cancer treatment.
Keywords:
CancerChromatinGene expressionPTENTranscriptionTumor suppressor

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