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- W1993002034 abstract "Replication-deficient adenoviruses have been used to transfer various genes of interest to mammalian tissues in vivo. Effective gene therapy for inborn genetic defects presenting with significant morbidity and mortality at birth will require correction of the defect prenatally. To test the hypothesis that intra-amniotically administered adenovirus transfers gene expression to fetal tissues, replication-deficient human type 5 adenovirus carrying the lacZ gene which encodes nuclear-targeted bacterial beta-galactosidase (Av1LacZ4) was instilled into the amniotic cavity of fetal sheep (10(10) to 1.5 x 10(11) pfu) and fetal mice (10(9) pfu) at 0.8 term gestation. Amniotic membranes and gastrointestinal and respiratory tract tissues were harvested after 3 d, bacterial beta-galactosidase activity was determined by 5-bromo-4-chloro-3-indoyl-beta-D-galactopyranoside (X-gal) enzyme-histochemistry, and tissue integrity was assessed in sections stained with hematoxylin and eosin. Bacterial beta-galactosidase activity was abundant in amniotic membranes and present in lower levels in esophagus, stomach, and small intestine as well as in conducting airways and pulmonary alveoli. To determine whether gene transfer by intraamniotic injection of adenovirus was dose-dependent, Av1Luc1, an adenoviral vector carrying the gene for luciferase (10(5)-10(9) pfu), was injected intraamniotically into fetal mice at 0.8 term gestation. Luciferase activity measured after 3 d in tissue homogenates of Av1Luc1-treated fetal mice revealed a linear dose response in amniotic membranes and gastrointestinal and respiratory tract organs. Intraamniotic administration of an adenoviral gene vector leads to expression of the transferred gene in amniotic membranes as well as in fetal gastrointestinal and respiratory tract tissues in a dose-dependent manner." @default.
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- W1993002034 date "1995-12-01" @default.
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- W1993002034 title "Intraamniotic Administration of an Adenoviral Vector for Gene Transfer to Fetal Sheep and Mouse Tissues" @default.
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- W1993002034 doi "https://doi.org/10.1203/00006450-199512000-00004" @default.
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