摘要:
Herpesvirus preparations, e.g. cultured HSV type 2, e.g. genetically disabled virus for vaccine use, can be purified, e.g. for subsequent pharmaceutical formulation, with solid phase affinity reagents containing sulfate- or sulfonate-comprising binding groups, e.g. sulfated polysacharide groups, e.g. heparin or dextran sulfate, and eluting e.g. with salt solutions. The process can be combined with other culture and harvesting steps.
摘要:
A process of harvesting a herpesvirus from a cell culture infected therewith comprises treating said culture with a hypertonic aqueous salt solution to yield a virus suspension, e.g. to give improved yield of virus for live virus vaccine where otherwise cell-disruption might be used to harvest the virus by disrupting virus-infected cells. The harvesting step can be followed e.g. by nuclease treatment, diafiltration and lyophilisation.
摘要:
This invention relates to the purification of biological preparations such as proteins and nucleic acids, especially for example proteins that have been produced by recombinant DNA techniques in bacteria. In a particular embodiment, the invention concerns improved methods for reducing the content of contaminants in biological preparations, e.g. recombinant proteins produced in host bacteria.