Efficient extraction of adventitious virus nucleic acid using commercially available methods

Area of Science:

• Pharmaceutical Science
• Virology
• Molecular Biology

Background:

• Pharmaceutical product development requires rigorous screening for adventitious viral contamination.
• Sensitive assays are needed to detect low levels of viral nucleic acid.

Purpose of the Study:

• To compare the efficiency of four different nucleic acid extraction methods.
• To assess viral nucleic acid recovery in relevant pharmaceutical matrices.
• To identify optimal extraction methods for sensitive viral detection.

Main Methods:

• Three model viruses (Minute virus of Mice, Porcine Circovirus, Feline Leukemia Virus) were used.
• Nucleic acid extraction was performed using four distinct methods (kits and manual).
• Quantification of extracted nucleic acid was done via droplet digital PCR.

Main Results:

• All four methods successfully recovered viral nucleic acid from tested matrices.
• The silica-column based extraction method yielded significantly higher viral nucleic acid recovery.
• Similar results were observed using bioreactor supernatant, mimicking industry conditions.

Conclusions:

• Silica-column based extraction is highly effective for recovering viral nucleic acid in pharmaceutical contexts.
• This finding supports the selection of optimal extraction methods for sensitive contamination detection.
• The study provides insights for Next Generation Sequencing and PCR applications in pharmaceutical quality control.