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Polyamines and colon cancer.

V Milovic1, L Turchanowa

  • 12nd Department of Medicine and Department of General Pharmacology, J.W. Goethe University, Theodor Stern Kai 7, D-60590 Frankfurt, Germany. vladen.milovic@med.uni-tuebingen.de

Biochemical Society Transactions
|March 26, 2003
PubMed
Summary

Polyamines, crucial for cell growth, are elevated in colon cancer. Targeting polyamine synthesis and uptake offers a promising strategy for colorectal cancer chemoprevention.

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Area of Science:

  • Oncology
  • Gastroenterology
  • Biochemistry

Background:

  • Polyamines and their synthesizing enzymes are significantly upregulated in colon cancer.
  • Colonocytes, both normal and cancerous, are exposed to high luminal putrescine from gut microflora.
  • High polyamine levels are implicated in neoplastic proliferation and colorectal carcinogenesis.

Purpose of the Study:

  • To investigate the role of luminal polyamines in colon cancer.
  • To explore therapeutic strategies targeting polyamine metabolism for colorectal cancer chemoprevention.

Main Methods:

  • The study focuses on the uptake and utilization of luminal polyamines by neoplastic colonocytes.
  • It examines the influence of mitogens on polyamine uptake in the context of colonic carcinogenesis.

Main Results:

  • Neoplastic colonocytes readily uptake and fully utilize luminal polyamines.
  • Mitogens involved in colonic carcinogenesis strongly upregulate polyamine uptake.
  • High polyamine concentrations may benefit non-neoplastic colonic mucosal growth but are a concern in cancer.

Conclusions:

  • Inhibition of polyamine synthesis and uptake are logical chemoprevention strategies.
  • Impairing polyamine utilization and enhancing catabolism in neoplastic cells are potential therapeutic avenues.
  • Targeting polyamine pathways presents a promising approach for colorectal cancer chemoprevention.

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