3 February 1999 Characterization of the cellular uptake of 5-aminolevulinic acid
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Photodynamic therapy with 5-aminolevulinic acid (5-ALA) is a promising alternative treatment for several types of cancer. This work represents a first approach to characterize the transport system for 5-ALA in human cancer cells, using WiDr cells from a primary adenocarcinoma of the rectosigmoid colon as a model system. The transport of 5-ALA in WiDr was found to be dependent on pH and temperature, and partially inhibited by inhibitors of the energetic metabolism. Although WiDr was shown to express System A, a common transport system for small aliphatic amino acids, the transport of 5-ALA in WiDr was not found to be mediated by this system.
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Eva Rud, Eva Rud, Kristian Berg, Kristian Berg, } "Characterization of the cellular uptake of 5-aminolevulinic acid", Proc. SPIE 3563, Photochemotherapy of Cancer and Other Diseases, (3 February 1999); doi: 10.1117/12.339116; https://doi.org/10.1117/12.339116

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