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- W1963548145 abstract "Adenoviral vectors efficiently deliver exogenous genes to salivary glands. There are two general epithelial cell types, with very different functions, in salivary glands - acinar and ductal. To determine if gene expression can be restricted in vivo to either general cell type using a relatively cell/tissue-specific promoter in conjunction with adenovirus-mediated gene transfer, we tested the human amylase and kallikrein promoters. For initial studies the sensitive reporter gene luciferase was used in two adenoviral constructs. The adenovirus AdAMY-luc contains the human salivary gland amylase promoter (-1003 to +2)(AMY1C) and AdKALL-luc contains the human tissue kallikein promoter (-315 to -1)(KLK1). The adenovirus AdKALL-hAQP1 was also used to test a therapeutic gene, human aquaporin-1 (hAQP1), potentially of importance in treating surviving ductal cells in irradiation-damaged glands. Luciferase expression after AdAMY-luc delivery in vivo directly to the parotid, submandibular, and sublingual glands, as well as to the lungs, and intravenously via the femoral vein, was restricted to the three salivary glands and the pancreas. AdKALL-luc delivery via the same routes resulted in a more general distribution of luciferase expression, although greatest luciferase activity was seen in salivary glands and lung. Luciferase activity after AdAMY-luc delivery was proportionally greater (~14-fold) in acinar cells, whereas luciferase activity after AdKALL-luc delivery was proportionally greater (~9-fold) in ductal cells. The expression of hAQP1 after AdKALL-hAQP1 gene transfer was mainly observed in ductal cells in vivo. AdKALL-hAQP1 was as useful as AdCMV-hAQP1 in increasing salivary flow rates of irradiated rats. This study demonstrates that adenoviral vectors containing the relatively cell/tissue-specific AMY1C or KLK1 promoters may be useful for targeting therapeutic gene expression in salivary glands." @default.
- W1963548145 created "2016-06-24" @default.
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- W1963548145 date "2001-12-10" @default.
- W1963548145 modified "2023-10-15" @default.
- W1963548145 title "Evaluation of Salivary Gland Acinar and Ductal Cell-Specific Promoters<i>In Vivo</i>with Recombinant Adenoviral Vectors" @default.
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- W1963548145 doi "https://doi.org/10.1089/10430340152710559" @default.
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