Abstract:
BACKGROUND:The polyamine system is a promising target for anticancer therapy. Ideally, an antineoplastic compound affecting this system should inhibit both ornithine decarboxylase and the polyamine transporter, and toxicity should be mild. Agmatine, decarboxylated L-arginine, appears to be such a compound. METHODS:Adenosine triphosphate levels and the protein content of cell populations in culture were identified as surrogate markers for cell count. Agmatine content in cells and tissue specimens was measured by high-performance liquid chromatography. Antizyme levels were estimated by Western blotting. RESULTS:Agmatine inhibited the proliferation of six human intestinal tumor cell lines in a concentration-dependent manner; this inhibition probably was attributable to an interaction between agmatine and the intracellular polyamine system. Consistent with the inverse relation between cell proliferation and agmatine concentration was the finding that agmatine content in human colon carcinoma tissue was approximately one-half as great as it was in adjacent macroscopically normal tissue. CONCLUSIONS:The results of the current study were compatible with the hypothesis that agmatine possesses antineoplastic action against intestinal tumor cells. It is likely that this activity is attributable to agmatine's regulatory role in polyamine homeostasis.
journal_name
Cancerjournal_title
Cancerauthors
Molderings GJ,Kribben B,Heinen A,Schröder D,Brüss M,Göthert Mdoi
10.1002/cncr.20407subject
Has Abstractpub_date
2004-08-15 00:00:00pages
858-68issue
4eissn
0008-543Xissn
1097-0142journal_volume
101pub_type
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