PMID- 32004766 OWN - NLM STAT- MEDLINE DCOM- 20201204 LR - 20201214 IS - 1873-264X (Electronic) IS - 0731-7085 (Linking) VI - 182 DP - 2020 Apr 15 TI - Characterization of therapeutic oligonucleotides by liquid chromatography. PG - 113105 LID - S0731-7085(19)32877-8 [pii] LID - 10.1016/j.jpba.2020.113105 [doi] AB - Marketed therapies in the pharmaceutical landscape are rapidly evolving and getting more diverse. Small molecule medicines have dominated in the past while antibodies have grown dramatically in recent years. However, the failure of traditional small and large molecules in accessing certain targets has led to increased R&D efforts to develop alternative modalities. Therapeutic oligonucleotides (ONs) can accurately be directed against their ribonucleic acid (RNA) target and represent a promising approach in previously untreated diseases. Established automated synthesis of ONs coupled with chemical improvements and the advance of new drug delivery technologies has recently brought ONs to a heightened level of interest. The first part of the present review describes the different classes of oligonucleotides, namely antisense oligonucleotide (ASO), small interfering RNA (siRNA), microRNA (miRNA), aptamer and immunostimulatory ON, with a focus on their delivery systems relevant for future analytical characterization. The second part reviews the typical impurities in therapeutic ON products. The third part discusses the use of historical methods anion exchange chromatography (AEX), ion-pair reversed phase liquid chromatography (IP-RP), mixed-mode chromatography (MMC) and recent analytical methodologies of hydrophilic interaction liquid chromatography (HILIC), two-dimensional liquid chromatography (2D-LC) mass spectrometry for the characterization of ASO and siRNA modalities. The effects of physicochemical properties of RPLC columns and ion-pair agents on ON separation are specifically addressed with possible future directions for method development provided. Finally, some innovative analytical developments for the analysis of siRNAs and their delivery materials to pave the way toward the use of multi-attribute methods in the near future are discussed. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Goyon, Alexandre AU - Goyon A AD - Small Molecules Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA. FAU - Yehl, Peter AU - Yehl P AD - Small Molecules Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA. FAU - Zhang, Kelly AU - Zhang K AD - Small Molecules Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA. Electronic address: zhang.kelly@gene.com. LA - eng PT - Journal Article PT - Review DEP - 20200120 PL - England TA - J Pharm Biomed Anal JT - Journal of pharmaceutical and biomedical analysis JID - 8309336 RN - 0 (Oligonucleotides) RN - 0 (RNA, Small Interfering) SB - IM MH - Chromatography, Liquid/*methods MH - Drug Contamination MH - *Drug Delivery Systems MH - Humans MH - Oligonucleotides/administration & dosage/*analysis MH - RNA, Small Interfering/administration & dosage/analysis OTO - NOTNLM OT - 2D-LC OT - AEX OT - HILIC OT - Ion-pair RPLC OT - MMC OT - Oligonucleotides COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/02/01 06:00 MHDA- 2020/12/15 06:00 CRDT- 2020/02/01 06:00 PHST- 2019/11/26 00:00 [received] PHST- 2019/12/21 00:00 [revised] PHST- 2020/01/08 00:00 [accepted] PHST- 2020/02/01 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/02/01 06:00 [entrez] AID - S0731-7085(19)32877-8 [pii] AID - 10.1016/j.jpba.2020.113105 [doi] PST - ppublish SO - J Pharm Biomed Anal. 2020 Apr 15;182:113105. doi: 10.1016/j.jpba.2020.113105. Epub 2020 Jan 20.