This invention relates to the NBLS (
Niobium Bovine Kidney Cell Line), with accession number CCTCC NO: C2022197. This invention also provides its application in culturing BVDV
virus. This invention successfully introduced the SV40-LT
gene into primary
Niobium Bovine Kidney Cells, activating their
telomerase activity and extending the
cell lifespan
in vitro. Experiments showed that the NBLS
Niobium Bovine Kidney Cell Line of this invention can be passaged for more than 50 generations without changing its growth and proliferation characteristics, thus obtaining an immortalized
cell line. This F50 generation Niobium Bovine
Kidney Cell Line NBLS is
highly sensitive to BVDV
virus and can efficiently proliferate the
virus. The virus
titer proliferated using this
cell line shows increased sensitivity compared to primary Niobium Bovine
Kidney Cells, reducing production costs. Therefore, this invention provides a new technical means for the large-scale production of BVDV vaccines.