Your browser doesn't support javascript.
loading
Cotinine-conjugated aptamer/anti-cotinine antibody complexes as a novel affinity unit for use in biological assays
Experimental & Molecular Medicine ; : 554-561, 2012.
Artículo en Inglés | WPRIM | ID: wpr-211931
ABSTRACT
Aptamers are synthetic, relatively short (e.g., 20-80 bases) RNA or ssDNA oligonucleotides that can bind targets with high affinity and specificity, similar to antibodies, because they can fold into unique, three-dimensional shapes. For use in various assays and experiments, aptamers have been conjugated with biotin or digoxigenin to form complexes with avidin or anti-digoxigenin antibodies, respectively. In this study, we developed a method to label the 5' ends of aptamers with cotinine, which allows formation of a stable complex with anti-cotinine antibodies for the purpose of providing another affinity unit for the application in biological assays using aptamers. To demonstrate the functionality of this affinity unit in biological assays, we utilized two well-known aptamers AS1411, which binds nucleolin, and pegaptanib, which binds vascular endothelial growth factor. Cotinine-conjugated AS1411/anti-cotinine antibody complexes were successfully applied to immunoblot, immunoprecipitation, and flow cytometric analyses, and cotinine-conjugated pegaptanib/anti-cotinine antibody complexes were used successfully in enzyme immunoassays. Our results show that cotinine-conjugated aptamer/anti-cotinine antibody complexes are an effective alternative and complementary technique for aptamer use in multiple assays and experiments.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Fosfoproteínas / Unión Proteica / Bioensayo / Anticuerpos Antiidiotipos / Proteínas de Unión al ARN / Cotinina / Células 3T3 NIH / Factor A de Crecimiento Endotelial Vascular / Aptámeros de Nucleótidos / Células Hep G2 Límite: Animales / Humanos Idioma: Inglés Revista: Experimental & Molecular Medicine Año: 2012 Tipo del documento: Artículo

Similares

MEDLINE

...
LILACS

LIS

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Fosfoproteínas / Unión Proteica / Bioensayo / Anticuerpos Antiidiotipos / Proteínas de Unión al ARN / Cotinina / Células 3T3 NIH / Factor A de Crecimiento Endotelial Vascular / Aptámeros de Nucleótidos / Células Hep G2 Límite: Animales / Humanos Idioma: Inglés Revista: Experimental & Molecular Medicine Año: 2012 Tipo del documento: Artículo