Journal
JOURNAL OF GENERAL VIROLOGY
Volume 87, Issue -, Pages 479-487Publisher
MICROBIOLOGY SOC
DOI: 10.1099/vir.0.81508-0
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Aptamers selected against various kinds of targets have shown remarkable specificity and affinity, similar to those displayed by antibodies to their antigens. To employ aptamers as genotyping reagents for the identification of pathogens and their strains, in vitro selections were carried out to find aptamers that specifically bind and distinguish the closely related human influenza A virus subtype H3N2. The selected aptamer, P30-10-16, binds specifically to the haernagglutinin (HA) region of the target strain A/Panama/2007/1 999(H3N2) and failed to recognize other human influenza viruses, including another strain with the same subtype, H3N2. The aptamer displayed over 1 5-fold-higher affinity to the HA compared with the monoclonal antibody, and efficiently inhibited HA-mediated membrane fusion. These studies delineate the application of aptamers in the genotyping of viruses.
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