Laboratory procedures to generate viral metagenomes

Area of Science:

• Virology
• Metagenomics
• Molecular Biology

Background:

• Viral metagenomics studies uncultured viral nucleic acids from diverse environments.
• Generating viral metagenome libraries requires specialized concentration, purification, and extraction techniques.
• No single protocol is universally applicable; methods must be adapted to sample types.

Purpose of the Study:

• To describe laboratory protocols for collecting viruses for virome generation.
• To outline methods for concentrating viral particles from various sample matrices.
• To detail steps for eliminating contaminating cellular and free nucleic acids.

Main Methods:

• Concentration of viral particles from diverse sample types.
• Purification to remove contaminating cells and free nucleic acids.
• Extraction, amplification, and purification of viral nucleic acids for sequencing.

Main Results:

• Successful isolation of viral nucleic acids suitable for high-throughput sequencing.
• Protocols are adaptable to different sample sources and viral particle types.
• Complete sample processing achievable within approximately one week.

Conclusions:

• The presented protocols provide a framework for generating viral metagenome sequence libraries.
• Individualization of steps is crucial for optimizing viral nucleic acid recovery.
• This work facilitates the study of uncultured viruses through metagenomic approaches.