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Ribosomal protein P2: a potential molecular target for antisense therapy of human malignancies

James Gardner-Thorpe1, Hiromichi Ito, Stanley W Ashley

  • 1Department of Surgery, Brigham and Women's Hospital/Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.

Anticancer Research
|February 26, 2004
PubMed
Abstract

Insights

Antisense-P2 oligonucleotide therapy reduced ribosomal protein P2 levels, inhibiting cancer cell growth and altering proteomes. This approach shows promise for developing novel cancer treatments by targeting essential protein translation machinery.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Proteomics

Background:

  • Ribosomal protein P2 is crucial for protein translation.
  • Antisense-mediated depletion of P2 may disrupt cancer cell proteomes.
  • Investigating P2 depletion as a potential cancer therapy.

Purpose of the Study:

  • To determine if antisense-mediated depletion of ribosomal protein P2 can inhibit cancer cell growth.
  • To analyze proteomic changes induced by P2 depletion.
  • To identify cancer types vulnerable to P2 targeting.

Main Methods:

  • Transfection of MIA PaCa-2 and BxPC-3 cells with P2-antisense oligonucleotide.
  • Assay of cell growth using MTT and measurement of P2 levels via Western blotting.
  • Proteomic comparison using two-dimensional electrophoresis and mass spectrometry.

Main Results:

  • Antisense-P2 significantly reduced P2 levels (63%) and inhibited BxPC-3 cell growth (to 65% of control).
  • Seventeen proteins, including Rho C and LDH, showed altered expression.
  • Breast cancer tissues exhibited underexpression of P2 compared to normal tissues.

Conclusions:

  • Antisense-P2 technology demonstrates potential in slowing cancer cell proliferation.
  • The observed anti-cancer effects are linked to widespread proteomic alterations.
  • Targeting ribosomal protein P2 offers a potential therapeutic strategy for certain cancers.

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