Abstract
Non-human adenoviruses such as bovine adenovirus type 3 (BAV-3) that do not replicate in human cells but can infect human cells in culture could provide an attractive alternative to human adenoviral vectors for gene therapy. In addition, a large-animal model for genetic diseases can be very useful for the assessment of the efficacy of adenovector-mediated gene delivery in man. Recombinant human subgroup C adenovectors use the coxsackie and adenovirus receptor (CAR) to enter their target cells. Through RT-PCR and sequencing we determined the complete coding sequence of bovine CAR which serves as the primary adenoviral attachment site on bovine cells. A multiple sequence alignment, involving all the previously identified CAR species (man, mouse, rat, pig, and dog) showed that bovine CAR was most related to porcine CAR (92% nucleotide similarity) and demonstrated a highly conserved adenovirus binding Ig1 domain.
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