Selection of DNA aptamers that bind to influenza A viruses with high affinity and broad subtype specificity.
Biochem Biophys Res Commun
; 443(1): 37-41, 2014 Jan 03.
Article
in En
| MEDLINE
| ID: mdl-24269231
ABSTRACT
Many cases of influenza are reported worldwide every year. The influenza virus often acquires new antigenicity, which is known as antigenic shift; this results in the emergence of new virus strains, for which preexisting immunity is not found in the population resulting in influenza pandemics. In the event a new strain emerges, diagnostic tools must be developed rapidly to detect the novel influenza strain. The generation of high affinity antibodies is costly and takes time; therefore, an alternative detection system, aptamer detection, provides a viable alternative to antibodies as a diagnostic tool. In this study, we developed DNA aptamers that bind to HA1 proteins of multiple influenza A virus subtypes by the SELEX procedure. To evaluate the binding properties of these aptamers using colorimetric methods, we developed a novel aptamer-based sandwich detection method employing our newly identified aptamers. This novel sandwich enzyme-linked aptamer assay successfully detected the H5N1, H1N1, and H3N2 subtypes of influenza A virus with almost equal sensitivities. These findings suggest that our aptamers are attractive candidates for use as simple and sensitive diagnostic tools that need sandwich system for detecting the influenza A virus with broad subtype specificities.
Key words
AIV; DNA aptamer; ELAA; Enzyme-linked aptamer assay (ELAA); HA; HEK; Influenza virus; MDCK; Madin-Darby canine kidney; NA; SELEX; SPR; avian influenza virus; enzyme-linked aptamer assay; hemagglutinin; human embryonic kidney; neuraminidase; surface plasmon resonance; systematic evolution of ligands by exponential enrichment
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Influenza A virus
/
DNA
/
Aptamers, Nucleotide
/
Influenza, Human
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
2014
Document type:
Article