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Updated: Jun 24, 2026

Practical Aspects of Sample Preparation and Setup of 1H R1ρ Relaxation Dispersion Experiments of RNA
Published on: July 9, 2021
Reversed-phase ion-pair liquid chromatography analysis and purification of small interfering RNA
Sean M McCarthy1, Martin Gilar, John Gebler
1Waters Corporation, Milford, MA 01757, USA. sean_m_mccarthy@waters.com
Abstract:
Small interfering RNA (siRNA)-induced gene silencing shows great promise in genomic research and therapeutic applications. siRNA duplexes are typically assembled from complementary synthetic oligonucleotides. High-purity single-stranded species are required for in vivo applications. Methods for separation, characterization, and purification of short RNA strands have been developed based on reversed-phase ion-pair liquid chromatography. The purification strategies were developed for both single-stranded and duplex RNA species. The method of duplex purification uses on-column annealing of complementary RNA strands, followed by separation of the target duplex from truncated duplexes and single-stranded RNA forms. The proposed method significantly reduces the purification time of synthetic siRNA.
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