Generation and characterization of aptamers against grass carp reovirus infection for the development of rapid detection assay
| Autor: | Pengfei Li, Hehe Xiao, S. Wu, Mingzhu Liu, Xinling Qin, Yu Qing |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Carps Veterinary (miscellaneous) Aptamer Aquatic Science Virus Fish Diseases 03 medical and health sciences chemistry.chemical_compound In vivo Animals Cells Cultured biology SELEX Aptamer Technique 04 agricultural and veterinary sciences Aptamers Nucleotide biology.organism_classification Virology Reoviridae Infections Grass carp 030104 developmental biology chemistry Membrane protein Molecular Probes 040102 fisheries Nucleic Acid Conformation 0401 agriculture forestry and fisheries Molecular probe Systematic evolution of ligands by exponential enrichment DNA |
| Zdroj: | Journal of Fish Diseases. 44:33-44 |
| ISSN: | 1365-2761 0140-7775 |
| Popis: | Grass carp reovirus (GCRV) causes devastating viral haemorrhagic disease in farmed grass carp (Ctenopharyngon idellus). As novel molecular probes, aptamers have been widely applied in rapid diagnosis and efficient therapies against virus or diseases. In this study, three single-stranded DNA (ssDNA) aptamers were selected against GCRV-infected CIK cells via SELEX (systematic evolution of ligands by exponential enrichment technology). Secondary structures predicted by MFOLD indicated that aptamers formed stem-loop structures, and GVI-11 had the lowest ΔG value of -30.84 KJ/mol. Three aptamers could specifically recognize GCRV-infected CIK cells, with calculated dissociation constants (Kd) of 220.86, 176.63 and 278.66 nM for aptamers GVI-1, GVI-7 and GVI-11, respectively, which indicated that they could serve as specific delivery system for antiviral therapies. The targets of aptamers GVI-1, GVI-7 and GVI-11 on the surface of GCRV-infected cells could be membrane proteins, which were trypsin-sensitive. Furthermore, FAM-labelled aptamer GVI-7 could be applied to detect GCRV infection in vivo. It is the first time to generate and characterize aptamers against GCRV-infected cells. These aptamers have great potentials in development of rapid diagnosis technology and antiviral agents against GCRV infection in aquaculture. |
| Databáze: | OpenAIRE |
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