Winner of the 2023 R&D 100 Award
The Cygnus MockV® RVLP Kit is based on a BSL-1 compatible stock solution of non-infectious Retrovirus-like Particles (RVLP), derived endogenously from CHO cell culture, as a spiking agent for viral clearance testing. From your own bench, predict retroviral validation outcomes, incorporate viral clearance into process development/ optimization experiments and employ viral clearance to QbD, DOE and HTS approaches. Instead of relying solely on a CRO-provided model XMuLV retrovirus, you can now independently spike and assess the removal of the original retrovirus-like particle of regulatory concern1.
The MockV® RVLP Kit includes a vial of RVLP stock solution, a 96-well plate for sample analysis, RNA extraction and qPCR reagents, and a well-controlled RNA standard for accurate and reliable RVLP quantification. By following the kit’s easy-to-use protocol, scientists can detect as little as 1 x 103 RVLP/mL, enabling an LRV of ~ 5.0 to be determined. Each kit contains 2.0 mL of RVLP Stock Solution at a concentration of 1 x 1010 RVLP/mL, sufficient for spiking up to 200 mL of load material to 1% (v/v), and quantification components for conducting analysis on 23 samples in triplicate. In less than one day, the assay and data analysis can be performed. A real-time qPCR instrument is required along with standard laboratory equipment. Minimal experience with RNA extraction or qPCR protocols is required. Compatible purification steps include Protein A chromatography, virus filtration, anion and cation exchange chromatography, mixed-mode, hydrophic-interaction and size- exclusion chromatography. The MockV® RVLP Kit achieves LRV accuracy to within ± 0.5 for these modes of separation as compared to traditional viral clearance studies with XMuLV model virus.
Now, through the use of Cygnus’s BSL-1 compatible viral clearance kits, you can easily and economically quantify viral clearance for downstream process steps in your own lab, on your timeline.
Abbreviations:
QbD = Quality by Design
DOE = Design of Experiment
HTS = High-throughput Screening
References:
1. Anderson, Kevin P., et al. "Endogenous origin of defective retrovirus-like particles from a recombinant Chinese hamster ovary cell line." Virology1 (1991): 305-311.
