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  • Title: Isolation of ssDNA aptamers that inhibit rabies virus.
    Author: Liang HR, Hu GQ, Zhang T, Yang YJ, Zhao LL, Qi YL, Wang HL, Gao YW, Yang ST, Xia XZ.
    Journal: Int Immunopharmacol; 2012 Nov; 14(3):341-7. PubMed ID: 22771543.
    Abstract:
    Aptamers, functional nucleic acids, capable of binding a variety of molecular targets with high affinity and specificity, have emerged as promising therapeutic agents. In this study, the cell surface-systematic evolution of ligands by exponential enrichment (Cell-SELEX) strategy was used to generate DNA aptamers which targeted to the intact rabies virus-infected live cells. Through 35 iterative rounds of selection, five high-affinity single-stranded DNA (ssDNA) aptamers were generated by cell-SELEX. Virus titer assay and real-time quantitative reverse transcription PCR (qRT-PCR) assay revealed that all five aptamers could inhibit replication of rabies virus (RABV) in cultured baby hamster kidney (BHK)-21 cells; and T14 and F34 aptamers were most effective. The qRT-PCR also showed a dose-dependent inhibitory effect in BHK-21 cells. Collectively, these data show the feasibility of generating functionally effective aptamers against rabies virus-infected cells by the Cell-SELEX iterative procedure. These aptamers may prove clinically useful as therapeutic molecules with specific antiviral potential against RABV infections.
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