Chalcogenoxanthylium photosensitizers for the photodynamic purging of blood-borne viral and bacterial pathogens.

Chalcogenoxanthylium photosensitizers for the photodynamic purging of blood-borne viral and bacterial pathogens.
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硫族黄基光敏剂,用于光动力清除血源性病毒和细菌病原体。

DOI:
10.1016/j.bmc.2005.07.035
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发表时间:
2005
期刊:
Bioorganic & medicinal chemistry.
影响因子:
--
通讯作者:
Detty,MichaelR
Detty,MichaelR
中科院分区:
--
文献类型:
--
作者:
Wagner,StephenJ;Skripchenko,Andrey;Donnelly,DavidJ;Ramaswamy,Krishna;Detty,MichaelR

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硫代和硒代氧杂蒽酮染料通过将2-硫代氧杂蒽锂、4-N,N-二甲基氨基苯基溴化镁和1-萘基溴化镁加入到适当的2,7-双-N,N-二甲基氨基硫属氧杂蒽-9-酮中,然后脱水和离子交换成氯化物盐来制备。评价了相应的硫属氧杂蒽染料作为光敏剂,用于灭活红细胞悬液中的细胞内和细胞外病毒,以及灭活红细胞悬液中选定的革兰氏(+)和革兰氏(-)细菌菌株。在红细胞悬液储存42天后,选定的光敏剂和光的组合对细胞内和细胞外病毒的灭活> 6log 10,对具有不同溶血水平的细胞外细菌的灭活> 4log 10。用质粒DNA和硫属氧杂蒽染料进行的光裂解实验表明,病毒和细菌中所含的基因组物质是其中一些染料的光动力作用的一个可能靶点。
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-dimethylaminochalcogenoxanthen-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 >6log10inactivation of intracellular and extracellular virus, and >4log10inactivation 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.
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