Viral vaccines sometimes induce the side effects which intimidate humans. Hence, it is urgently required to detect efficiently hazardous viruses which may be contaminated in viral vaccines. Most vaccines are derived from the biological forms. The effe...
Viral vaccines sometimes induce the side effects which intimidate humans. Hence, it is urgently required to detect efficiently hazardous viruses which may be contaminated in viral vaccines. Most vaccines are derived from the biological forms. The effective and sensitive evaluation methods for hazardous viruses should be established because dangerous contaminants such as viruses may be involved during manufacturing processes and the storage of virus vaccine products. Some of products may be mixed with the hazardous viruses derived from animal or human resources. During the culture and purification, hazardous viruses such as retrovirus and HBV may be contaminated. Animal cell culture systems, specially for insect cells, have been used for the production of recombinant proteins. In these study, recovery test for clearance validation of HBV and retrovirus HIV I were performed as spike testing. HBV x and HIV I plasm ids were serially spiked into various conditions of media containing FBS (DMEM, SDM, RPMI 1640, GICM, IMDM) and detected by PCR/ELISA. When HBV x was spiked into DMEM and SDM, 0.1 pg HBV x plasmid was difficult to detect HBV x PCR products in agarose gel. In addition, HIV I pol was more difficult to detect in various media than HBV x by PCR in agarose gel irrespective of FBS. However, those PCR products can be detected by our ELISA system. In order to evaluate our PCR/ELISA system, we have 6 times performed PCR/ELISA. Intra-assay and inter-asasy showed that our PCR/ELISA even detected up to 500 times diluted PCR products from HBV x and HIV I pol plasmids serially spiked in various media. These results suggested that our PCR/ELISA system can validate the absence of viruses which may be contaminated in biological products.