Evaluation of cellular substrates used in research and production of biological products for infection with BVDV 1 & 2

Simultaneously with the expansion of vaccine production on cell culture media, identification and elimination of adventitious viruses infecting culture media of animal origin, as well as prevention of contamination of biological products from cell culture media to one of the main concerns of production Vaccine suppliers. The aim of this study was to investigate the possible contamination of cellular substrates used in research and production of biological products of Razi Vaccine and Serum Research Institute with BVD1 and BVD2 viruses. The address of this investigate was 44 samples from 44 cell lines with different passage numbers and storage dates in a total of 100 samples. After extracting RNA from the above cells, a screening test was performed using Real Time PCR and a pair of primers to identify all Pestivirus. In this experiment, the cytopathic biotype BVDV1a NADL was used as a positive control. Then the species and their subspecies were determined by RT-PCR method. Infection was observed in five cells Hek293, IBRS2, RBK, FLK, RK13, all cells except IBRS2 in BVDV1b typing. All of these cells are used in research and quality control of biological products.