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Isolation of Cancer Stem Cells From Human Prostate Cancer Samples
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eIF4E Phosphorylation in Prostate Cancer.

Leandro S D'Abronzo1, Paramita M Ghosh2

  • 1VA Northern California Health Care System, Mather, CA; Department of Urological Surgery, University of California at Davis, Sacramento, CA.

Neoplasia (New York, N.Y.)
|May 7, 2018
PubMed
Summary
This summary is machine-generated.

Prostate cancer progression involves altered RNA translation. Targeting eukaryotic translation initiation factor 4E (eIF4E) may overcome therapy resistance and reduce tumor growth.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Prostate cancer (PCa) progression is linked to changes in cellular control mechanisms, including RNA translation.
  • Overactivation of translation machinery is common in cancer, supporting tumor growth and proliferation.

Purpose of the Study:

  • To review the role of eukaryotic translation initiation factor 4E (eIF4E) in prostate cancer progression.
  • To explore how eIF4E phosphorylation contributes to therapy resistance in advanced PCa.

Main Methods:

  • Literature review focusing on molecular mechanisms in PCa.
  • Analysis of signal transduction pathways (PI3K/Akt/mTOR, Ras/MAPK) and their convergence on eIF4E.
  • Examination of eIF4E's role in mRNA translation initiation and m7G-cap binding.

Main Results:

  • PI3K/Akt/mTOR and Ras/MAPK pathways regulate PCa progression by converging on eIF4E.
  • eIF4E phosphorylation is implicated in resistance to hormonal therapy and chemotherapy in advanced PCa.
  • Phosphorylated eIF4E enhances translation of oncogene mRNAs, increasing tumorigenicity.

Conclusions:

  • eIF4E plays a critical role in PCa progression and therapy resistance.
  • Targeting eIF4E phosphorylation presents a potential strategy to improve treatment outcomes for advanced prostate cancer.