Journal
CANCER CHEMOTHERAPY AND PHARMACOLOGY
Volume 54, Issue 1, Pages 57-63Publisher
SPRINGER-VERLAG
DOI: 10.1007/s00280-004-0782-5
Keywords
phenyl alkanoic acids; histone deacetylase
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Purpose. A structure-activity study was undertaken to determine the influence of side chain length of phenyl alkanoic acids and the degree of unsaturation of phenyl alkenoic acids on the induction of histone acetylation and inhibition of cancer cell proliferation. Materials and methods. Studies on cell proliferation were performed with DS19 mouse erythroleukemic cells, PC-3 human prostate cancer cells and Caco-2 human colon cancer cells. Actions on histone deacetylase and the induction of histone acetylation were compared for 4-phenylbutyrate and structurally related molecules. Results. Increasing inhibition of cell proliferation by phenyl alkanoic acids together with a decrease in cells in S phase and an increase in apoptotic cells was observed with increased chain length between four and ten carbons. Introduction of double bonds into the side chain was associated with increased growth inhibition. In contrast, 4-phenylbutyrate was a more potent inhibitor of histone deacetylase and inducer of histone acetylation than the other phenyl alkanoic acids examined. Conclusions. In comparison with the action of 4-phenylbutyrate, actions other than inhibition of histone deacetylase appear to be more important for growth inhibition by longer chain phenyl alkanoic and phenyl alkenoic acids.
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