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Published on: May 14, 2016

Four peptides decrease human colon adenocarcinoma cell number and DNA synthesis via cyclic GMP

William R Gower1, Brian A Vesely, Abdel A Alli

  • 1Department of Internal Medicine, University of South Florida Cardiac Hormone Center and James A. Haley Veterans Medical Center, Tampa, 33612, USA.

International Journal of Gastrointestinal Cancer
|May 2, 2006
PubMed
Abstract

Insights

Four peptide hormones significantly reduce colon cancer cells by up to 97% within 24 hours. These anticancer effects are mediated by cyclic guanosine monophosphate (cGMP).

Area of Science:

  • Oncology
  • Molecular Biology
  • Endocrinology

Background:

  • Colon cancer causes significant mortality, with limited treatment options.
  • Natriuretic peptides demonstrate anticancer effects in other adenocarcinoma types.

Purpose of the Study:

  • To investigate the anticancer effects of specific peptide hormones on colon adenocarcinoma cells.
  • To determine if cyclic guanosine monophosphate (cGMP) mediates these anticancer effects.

Main Methods:

  • Human colon adenocarcinoma cells were treated with four peptide hormones.
  • Cell viability, proliferation, and DNA synthesis were assessed.
  • The role of cGMP was evaluated using a cGMP antibody.
  • Western blotting identified natriuretic peptide receptors (NPRs).

Main Results:

  • A 89-97% decrease in colon cancer cells was observed within 24 hours.
  • Concentration-dependent reduction in cell number and DNA synthesis (65-83%) occurred.
  • cGMP mediated 75-97% of the observed anticancer and DNA synthesis effects.
  • Natriuretic peptide receptors A and C were identified in colon cancer cells.

Conclusions:

  • Four peptide hormones effectively eliminate a high percentage of colon cancer cells.
  • The anticancer mechanisms are specifically mediated by cyclic guanosine monophosphate (cGMP).
  • Natriuretic peptide receptors are present in colon adenocarcinoma cells, suggesting a potential therapeutic target.

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