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Nucleic acid hybridization for detection of cell culture-amplified adenovirus.

Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany 12201-0509.

ABSTRACT

A number of recombinant plasmids containing genomic segments of adenovirus were constructed. Seven cloned probes, as well as total adenovirus type 2 (Ad2) and Ad16 genomic DNA, were tested by a nucleic acid hybridization technique for sensitivity and specificity in detecting adenoviruses in infected cells. Adenovirus DNA was spotted onto a nitrocellulose filter and hybridized with 32P-labeled DNA probes. The probes, total Ad2 genomic DNA, and plasmid pAd2-H (containing the hexon gene from Ad2 DNA) all detected 10 reference serotypes of five genomic subgroups (A through E) with similar sensitivities. However, plasmid pAd2-H required less preparation time than did total Ad2 DNA. Probes pAd2-F (containing the fiber gene from Ad2) and pAd16-BD (containing the BamHI D fragment from Ad16) hybridized only with reference serotypes from the homologous subgroups (C and B, respectively). Of 101 patient isolates amplified in cells, pAd2-H detected 100% of all isolates from both the homologous and the heterologous subgroups. The detection rates for pAd2-F were 100% (subgroup C) and 3.6% (subgroups A, B, and D), and those for pAd16-BD were 100% (subgroup B) and 9.4% (subgroups A, C, and D). A commercial biotinylated product (Pathogene II) was also included in this study for comparison.