Author Archives: Dan Mardirosian

eBook: Viral Vaccine Production — Cultivation of Vero Cells in Packed-Bed Bioreactors

Vero cells are anchorage-dependent cells that are used widely as a platform for viral vaccine production (1). In stirred-tank bioreactors, they are grown ordinarily on microcarriers. Fibra-Cel disks are an alternative attachment matrix because they provide a three-dimensional environment that protects cells from damaging shear forces. However, such disks have not been tested for the cultivation of Vero cells. We tested whether benchtop single-use and glass bioreactors with a packed bed made of Fibra-Cel disks would be suitable for cultivation…

Scaling Up a CHO-Produced Hormone–Protein Fusion Product

    Many biotechnology companies recognize the powerful benefits of increasing product titer early in product development as a strategy to minimize manufacturing costs, scale, and the duration necessary to produce clinical supplies and achieve product commercialization. Additional benefits include minimizing or completely avoiding significant regulatory delays to market that can be caused by major process technology changes (such as cell line and product quality changes). Recently, another significant benefit has been realized too: Smaller, more productive and efficient 2,000-L…