RNA based therapeutics represent a powerful new tool for gene therapy. In RNA production, impurities such as nucleotide triphosphates, abortive transcripts, and DNA template can affect down-stream applications by triggering immune responses. Gel-based methods of purification, such as preparative denaturing polyacrylamide gel electrophoresis (PAGE) and agarose gels, are limited by poor resolution of RNA size and potential chemical modifications from reagents such as formaldehyde.
To date, high performance liquid chromatography (HPLC) remains a staple method for purification of messenger RNA (mRNA) and RNA oligonucleotides. Presented here are two HPLC methods, a size exclusion-based method for the purification of long mRNA, and a reverse-phase method for the purification of oligonucleotides.
Application of ΦX174 HaeIII digest fragments using wide pore C18 column
>> Information on COSMOSIL RNA-RP1 (under construction）
Single base resolution at 40 nucleotides
|Paper:||Separation of long-stranded RNAs by RP-HPLC using an octadecyl-based column with super-wide pores|
|Author:||Tomomi Kuwayama, Makoto Ozaki, Motoshi Shimotsuma & Tsunehisa Hirose|
|Article:||Analytical Sciences volume 39, 417-425 (2023)
|Overview:||Messenger ribonucleic acids (mRNAs) have been used in vaccines for various diseases and are attracting attention as a new pharmaceutical paradigm. The purification of mRNAs is necessary because various impurities, such as template DNAs and transcription enzymes, remain in the crude product after mRNA synthesis. Among the various purification methods, reversed-phase high-performance liquid chromatography (RP-HPLC) is currently attracting attention. Herein, we optimized the pore size of the packing materials, the mobile phase composition, and the temperature of the process; we also evaluated changes in the separation patterns of RNA strands of various lengths via RP-HPLC. Additionally, single-stranded (50-1000 nucleotides in length) and double-stranded (80-500 base pairs in length) RNAs were separated while their non-denatured states were maintained by performing the analysis at 60 °C using triethylammonium acetate as the mobile phase and octadecyl-based RNA-RP1 with super-wide pores (> 30 nm) as the column. Furthermore, impurities in a long-stranded RNA of several thousand nucleotides synthesized by in vitro transcription were successfully separated using an RNA-RP1 column. The columns used in this study are expected to separate various RNA strands and the impurities contained in them.
COSMOSIL Application, which includes more than 7,700 applications using COSMOSIL/COSMOCORE columns, is now usable by clicking the link below which is in Nacalai Tesque, Inc. The application is searchable by sample category, sample name, CAS No., column name and particle size
|COSMOCORE 2.6C18 packed column (2.1 mm I.D. x 100 mm)||12614-71||1 pkg||814.00||Buy|
|COSMOSIL RNA-RP1 Packed Column (2.0 mm I.D. x 100 mm)||21078-31||1 pkg||1,584.00||Buy|
|COSMOSIL RNA-RP1 Packed Column (4.6 mm I.D. x 100 mm)||21079-21||1 pkg||1,584.00||Buy|
|COSMOSIL RNA-RP1 Packed Column (10.0 mm I.D. x 100 mm)||21080-81||1 pkg||3,724.00||Buy|
|COSMOSIL RNA-SEC-1000 Packed Column (4.6 mm I.D. x 250 mm)||21088-01||1 pkg||2,119.00||Buy|
|COSMOSIL RNA-SEC-1000 Guard Column (7.5 mm I.D. x 50 mm)||20785-91||1 pkg||1,017.00||Buy|
|COSMOSIL RNA-SEC-1000 Packed Column (7.5 mm I.D. x 300 mm)||19380-21||1 pkg||2,996.00||Buy|
|COSMOSIL RNA-SEC-2000 Packed Column (4.6 mm I.D. x 250 mm)||21095-01||1 pkg||2,119.00||Buy|
|COSMOSIL RNA-SEC-2000 Guard Column (7.5 mm I.D. x 50 mm)||21096-91||1 pkg||1,017.00||Buy|
|COSMOSIL RNA-SEC-2000 Packed Column (7.5 mm I.D. x 300 mm)||19381-11||1 pkg||2,996.00||Buy|