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- W2078412195 abstract "Salivary glands (SGs) have proven useful targets for clinical applications of gene therapeutics. In this toxicology and biodistribution study, which conforms to U.S. Food and Drug Administration Good Laboratory Practice regulations, four doses (107–1010 particles) of a serotype 2 adeno-associated viral (AAV2) vector encoding human erythropoietin were directly administered to the right submandibular gland of male and female BALB/c mice (n = 21 per gender dose group). Control-treated (saline administered; n = 66) and vector-treated (n = 168) animals did not differ in clinical appearance, morbidity and mortality rates, food and water consumption, weight gain ratios, and final weight. Clinical hematology values also were unaffected by AAV2 administration except for parameters influenced by the expression of the recombinant protein (e.g., hematocrit). Mice were killed on days 3, 30, 55, and 92. No major vector-related toxicity was uncovered after complete pathology and histopathology review. However, a significant gender-related difference in vector biodistribution was revealed by quantitative polymerase chain reaction. In male mice vector (group receiving 1010 particles/animal) effectively transduced, and was primarily confined within, the SGs (i.e., ∼800 times more copies in SGs than in liver; day 3) and long lived. In contrast, in female mice, SG transduction was less efficient (260-fold less than in males; day 3) and short lived, and vector was disseminated widely via both the bloodstream (SG:liver copy ratio, ∼1) and saliva (30-fold greater than in males). The observed vector biodistribution is likely due to differences in AAV2 receptor targets and structural differences affecting SG integrity. Sexual dimorphism is a factor of major significance that could potentially affect gene therapy clinical applications in SGs." @default.
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- W2078412195 date "2007-11-01" @default.
- W2078412195 modified "2023-10-10" @default.
- W2078412195 title "Gender Differences in Serotype 2 Adeno-Associated Virus Biodistribution After Administration to Rodent Salivary Glands" @default.
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- W2078412195 doi "https://doi.org/10.1089/hum.2007.072" @default.
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