期刊
BIOORGANIC & MEDICINAL CHEMISTRY
卷 13, 期 21, 页码 5927-5935出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2005.07.035
关键词
chalcogenoxanthylium dyes; pathogen inactivation; photodynamic therapy; virus inactivation; bacterial inactivation
资金
- NCI NIH HHS [CA69155] Funding Source: Medline
- NHLBI NIH HHS [HL66770] Funding Source: Medline
Thio- and selenoxanthylium dyes were prepared by the addition of 2-lithiothiophene, 4-N, N-dimethylaminophenylmagnesium bromide, and 1-naphthylmagnesium bromide to the appropriate 2,7-bis-N,N-dimethylaminochalcogenoxantlieti-9-one, followed by dehydration and ion exchange to the chloride salts. The corresponding chalcogenoxanthylium dyes were evaluated as photosensitizers for the inactivation of intracellular and extracellular virus in red blood cell suspensions and for the inactivation of selected strains of gram (+) and gram (-) bacteria in red blood cell Suspensions. Selected combinations of photosensitizer and light gave > 6log(10) inactivation of intracellular and extracellular virus, and > 4log(10) inactivation of extracellular bacteria with varying levels of hemolyis, following a 42-day storage of red blood cell suspensions. Photocleavage experiments with plasmid DNA and the chalcogenoxanthylium dyes suggested the genomic material contained in the virus and in the bacteria as one possible target for the photodynamic action of some of these dyes. (c) 2005 Elsevier Ltd. All rights reserved.
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