title: A first comparative study of purpurinimide-based fluorinated vs. nonfluorinated photosensitizers for photodynamic therapy.
abstract: A first report on the synthesis and comparative in vitro-in vivo photosensitizing efficacy of various fluorinated and the corresponding nonfluorinated, purpurinimide-based photosensitizers is discussed. In preliminary in vivo screening, compared with the nonfluorinated analogs, purpurinimides bearing trifluoromethyl substituents showed enhanced photosensitizing efficacy. Among compounds (isomers) with similar lipophilicity, the position of the substituents was found to play a decisive role in biological efficacy.
authors.affiliation: Photodynamic Therapy Center, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
authors.forename: Amy L
authors.initials: AL
authors.lastname: Gryshuk
authors.forename: Andrew
authors.initials: A
authors.lastname: Graham
authors.forename: Suresh K
authors.initials: SK
authors.lastname: Pandey
authors.forename: William R
authors.initials: WR
authors.lastname: Potter
authors.forename: Joseph R
authors.initials: JR
authors.lastname: Missert
authors.forename: Allan
authors.initials: A
authors.lastname: Oseroff
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Dougherty
authors.forename: Ravindra K
authors.initials: RK
authors.lastname: Pandey
mesh_terms: D000818:Animals; D004307:Dose-Response Relationship, Radiation; D004354:Drug Screening Assays, Antitumor; D005461:Fluorine / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology* / Q000627:therapeutic use; D008027:Light; D051379:Mice; D008809:Mice, Inbred C3H; D015394:Molecular Structure; D009368:Neoplasm Transplantation; D010778:Photochemotherapy / Q000379:methods*; D017319:Photosensitizing Agents / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology* / Q000627:therapeutic use; D011166:Porphyrins / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology* / Q000627:therapeutic use; D012513:Sarcoma, Experimental / Q000188:drug therapy / Q000378:metabolism / Q000473:pathology; D013997:Time Factors
chemical_list: D017319:Photosensitizing Agents; D011166:Porphyrins; D005461:Fluorine