Synthesis and cellular studies of nonaggregated water-soluble phthalocyanines.
Basic Information
ID: ALA1144405
Journal: J Med Chem
Title: Synthesis and cellular studies of nonaggregated water-soluble phthalocyanines.
Authors: Liu W, Jensen TJ, Fronczek FR, Hammer RP, Smith KM, Vicente MG.
Abstract: Water-soluble phthalocyanines are promising photosensitizers for application in cancer therapy and in the photoinactivation of viruses. The water-soluble zinc(II) phthalocyanines 5 and 6 were synthesized by converting the corresponding ester derivative 4 into the sodium carboxylate and carboxylic acid species. Compound 5 can be solubilized in water as a monomeric species, as demonstrated by UV/vis and fluorescence spectroscopy. These compounds were characterized by analytical and spectroscopic methods and, in the case of 4, by X-ray crystallography. The water-soluble phthalocyanines were found to have low dark cytotoxicity toward V79 hamster fibroblasts and human HEp2 cells, to be phototoxic at low light and drug doses, to be taken up by cells in culture, and to localize intracellularly, mainly in the cell lysosomes. Conjugation of the anionic phthalocyanines with positively charged LipoGen liposomes resulted in effective delivery of these compounds into the nuclei of cells. It is concluded that these highly water-soluble phthalocyanines are promising sensitizers for the photodynamic therapy of tumors.
CiteXplore: 15715471
DOI: 10.1021/jm049375b
Patent ID: ┄