Extraction of nucleic acids is a challenging and one of the most crucial steps influencing reliable and accurate quantification of the target DNA/RNA in the sample. We develop custom DNA/RNA extraction protocols, optimise and evaluate. Finally, the protocol can be qualified and used in subsequent analyses.

Viral vector copy number determination digital PCR offers most accurate quantification. We develop new custom assays and/or optimise existing assays, evaluate their performance and qualify and/or validate best performing assays. Different platforms for digital PCR can be employed e.g., Bio-Rad’s ddPCR system, Quantstudio 3D, Fluidigm, Qiacuity).

Residual cell line DNA and plasmid DNA in the final product raise safety concerns. Accurate and sensitive approaches are need to determine their presence and quantity. We develop new custom assays or use existing protocols for quantification of hcDNA and pDNA with qPCR or dPCR.

Proteins originating from cell line culture also present a big safety concern. We offer optimisation of the ELISA-based protocol for accurate quantification of proteins.

ELISA based viral particle quantification can be used to supplement molecular data on viral genome quantity, while negative staining electron microscopy offers unique opportunity to observe the viral particles and possible impurities - the latter assays are performed in collaboration with experts at National Institute of Biology (NIB).