Abstract
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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Acknowledgements
This research was supported in part by a grant from the Alma Toorock Memorial for Cancer Research. Phenyl alkanoic acids and structurally related molecules other than 4-phenylbutyric acid were provided by CircaGen Pharmaceutical, Phoenix, Md. We are grateful to Ms. Dana Stein for performing the analysis of cell cycle parameters.
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Lea, M.A., Shareef, A., Sura, M. et al. Induction of histone acetylation and inhibition of growth by phenyl alkanoic acids and structurally related molecules. Cancer Chemother Pharmacol 54, 57–63 (2004). https://doi.org/10.1007/s00280-004-0782-5
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DOI: https://doi.org/10.1007/s00280-004-0782-5