title: Improving gene transfer in human renal carcinoma cells: Utilization of adenovirus vectors containing chimeric type 5 and type 35 fiber proteins.
abstract: The transduction efficacy of adenovirus serotype 5 (Ad5) vector in human renal carcinoma cells is generally low due to the down-regulated expression of Coxsackie and adenovirus receptor (CAR) in target cells. By contrast, the infectivity of adenovirus serotype 35 vectors depends on the binding rate to CD46 receptor, independent of CAR. In this study, we examined whether an adenovirus vector containing chimeric type 5 and type 35 fiber proteins (Ad5/F35) increases transduction efficiency compared to Ad5 vector in human renal carcinoma cells in vitro. The expression of CAR was much lower in the human renal carcinoma cells than in control HEK293 cells. By contrast, the expression of CD46 was similar and perhaps at a higher level in the human renal carcinoma cells than in the HEK293 cells. The transduction efficacy of Ad5/F35 vector was dramatically higher compared to that of Ad5 in human renal carcinoma cells, and was correlated to the expression of CD46. Thus, Ad5/35 vector may be useful for the development of novel gene therapy approaches to renal cell carcinoma.
authors.affiliation: Laboratory of Cell and Gene Therapy, Institute for Advanced Medical Sciences, Hyogo College of Medicine, Hyogo 663-8501; ; Advanced Medical Research Center, Hyogo University of Health Sciences, Hyogo 650-8530;
authors.forename: Bishnu
authors.initials: B
authors.lastname: Acharya
authors.forename: Shuji
authors.initials: S
authors.lastname: Terao
authors.forename: Toru
authors.initials: T
authors.lastname: Suzuki
authors.forename: Michio
authors.initials: M
authors.lastname: Naoe
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Hamada
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mizuguchi
authors.forename: Akinobu
authors.initials: A
authors.lastname: Gotoh