Development of a DNA-encoded library screening method DEL Zipper to empower the study of RNA-targeted chemical matter

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To date, RNA-targeted chemical matter is under explored due to a lack of robust screening assays. In this study, we present a novel RNA-targeted small molecule screening approach using a specialized DNA-encoded library (DEL). Our findings reveal that the specialized DEL library, called DEL Zipper, can significantly reduce single-stranded DNA-RNA region interaction signals during various kinds of RNA selection. By performing the selection against both G-quadruplex, we have identified novel hits that interact with RNA targets and the results are validated through binding. This study demonstrates that the DEL Zipper method is a robust screening assay that has potential for discovering small molecule ligands for diverse RNA targets.

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