title: Gel electrophoresis in a polyvinylalcohol coated fused silica capillary for purity assessment of modified and secondary-structured oligo- and polyribonucleotides.
abstract: Application of a polyvinylalcohol-coated (PVA-coated) capillary in capillary gel electrophoresis (CGE) enables the selective separation of oligoribonucleotides and their modifications at high resolution. Quality assessment of shorter oligomers of small interfering RNA (siRNA) is of key importance for ribonucleic acid (RNA) technology which is increasingly being applied in medical applications. CGE is a technique of choice for calculation of chemically synthesized RNAs and their modifications which are frequently obtained as a mixture including shorter oligoribonucleotides. The use of CGE with a PVA-coated capillary to analyze siRNA mixtures presents an alternative to conventionally employed techniques. Here, we present study on identification of the length and purity of RNA mixture ingredients by using PVA-coated capillaries. Also, we demonstrate the use of PVA-coated capillaries to identify and separate phosphorylated siRNAs and secondary structures (e.g. siRNA duplexes).
authors.affiliation: Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland.
authors.forename: Martyna
authors.initials: M
authors.lastname: Barciszewska
authors.affiliation: Poznan Science and Technology Park, Adam Mickiewicz University Foundation, Rubież 46, 61-612 Poznań, Poland.|FutureSynthesis sp. z o.o. ul, Rubież 46, 61-612 Poznań, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Sucha
authors.affiliation: Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland.
authors.forename: Sandra
authors.initials: S
authors.lastname: Bałabańska
authors.affiliation: Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland.
authors.forename: Marcin K
authors.initials: MK
authors.lastname: Chmielewski
mesh_terms: D002851:Chromatography, High Pressure Liquid; D019075:Electrophoresis, Capillary / Q000379:methods; D009690:Nucleic Acid Conformation; D010766:Phosphorylation; D011061:Poly A / Q000737:chemistry; D011072:Poly U / Q000737:chemistry; D011131:Polyribonucleotides / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012313:RNA / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D011131:Polyribonucleotides; D011061:Poly A; D011072:Poly U; D012313:RNA; D012822:Silicon Dioxide; D011142:Polyvinyl Alcohol