Simplified methods for large scale enzymatic synthesis of oligoribonucleotides

Area of Science:

• Biochemistry
• Molecular Biology
• Synthetic Chemistry

Background:

• Enzymatic synthesis of oligoribonucleotides is crucial for various biological and chemical applications.
• Existing methods for large-scale synthesis often face challenges in purification and yield.

Purpose of the Study:

• To develop simplified, large-scale enzymatic methods for synthesizing oligoribonucleotides.
• To improve purification strategies and enzyme removal for higher product quality.

Main Methods:

• Utilized polynucleotide phosphorylase for enzymatic polymerization.
• Employed RPC-5 chromatography at two pH values to prevent primer phosphorolysis.
• Implemented rapid dialysis for efficient large-scale desalting.
• Developed simplified enzyme removal techniques.
• Applied high-resolution 1H and 31P NMR for product identification and purity assessment.

Main Results:

• Achieved simplified, large-scale enzymatic synthesis of oligoribonucleotides.
• Successfully addressed primer phosphorolysis using dual-pH RPC-5 chromatography.
• Demonstrated high product purity and yield (milligrams) suitable for physical studies.
• Established a scalable method starting with grams of material.

Conclusions:

• The developed method offers a simplified and efficient approach for large-scale oligoribonucleotide synthesis.
• The combination of advanced chromatography, rapid dialysis, and NMR analysis ensures high-purity products.
• This method provides sufficient quantities of oligoribonucleotides for extensive physical investigations.