ArticleResearch in pharmaceutical sciences2025
A novel hybrid approach to overcome defects of CE-SELEX and cell-SELEX in developing aptamers against aspartate β-hydroxylase.
Article in Research in pharmaceutical sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and purpose: Aptamers, a new category of molecular probes, are overthrowing antibodies in molecular diagnostics. However, there are serious problems with using aptamers for this application including poor or non-specific binding Experimental approach: In our approach, the selected oligomer pool from the last cycle of CE-SELEX was sequenced and then subjected to 3 additional rounds of Cell-SELEX which provides native ASPH (CEC hybrid-SELEX). High-throughput sequencing was applied to achieve a comprehensive sight of the enriched pools. Further confirmatory investigations on oligomers with higher copy numbers were performed using flow cytometry. Findings/Results: Three selected oligomers, AP-CEC 1, AP-CEC 2, and AP-CEC 3, showing Kd values of 43.09 nM, 34.85 nM, and 35.92 nM, respectively, were achieved based on the affinity assessment of the ASPH-expressing cells. Conclusion and implications: Our research suggested that CEC hybrid-SELEX could help recognize which oligomers from CE-SELEX are more capable of binding native ASPH
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