Induction of retinol esterification in retinal pigment epithelial cells by butyrate |
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Authors: | Ingming Jeng |
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Institution: | 1. Neurochemistry Research Unit Missouri Institute of Psychiatry, USA;2. Department of Biochemistry University of Missouri-Columbia School of Medicine 5400 Arsenal Street St. Louis, Missouri 63139, USA |
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Abstract: | Butyrate induced marked morphological changes in cultured human retinal pigment epithelial (RPE) cells. The cells assumed a flattened structure within six hours of exposure to butyrate. The butyrate-treated retinal pigment epithelial cells possessed an enhanced capacity to esterify retinol. Among all short chain organic acids tested, butyrate was by far the most effective, followed by pentanoate and hexanoate. The inductive effect of butyrate was specific for retinol esterification, since the incorporations of fatty acid into phosphatidyl choline and cholesteryl ester were not enhanced. Time-dependent, butyrate-enhanced retinol esterification may be related to the inhibition of cell proliferation. This represents the first report on the induction of retinol esterification in cultured retinal pigment epithelial cells. |
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