Dsm IP Assets B.v.

Dpx Holdings B.v.

Jose Manuel Coco Martin

Maike Wubben

John Crowley

Maria Gerarda Wilhelmina Gunnewijk

John Wyeth Medica Ireland Crowley

Maike Wübben

The invention relates to a process for the culturing of cells by continuous perfusion culturing of a cell culture comprising cell culture medium and cells, wherein cell culture medium is added to the cell culture, the cell culture is circulated over a filter module comprising hollow fibers resulting in an outflow of liquid having a lower cell density than the cell culture and the flow within the filter module is an alternating tangential flow. Preferably, culture medium is added at a particular perfusion rate and/or biomass is removed form the culture at least once. The method is especially suitable for the culturing of aggregating cells. The invention also relates to such a process wherein a biological substance, preferably an antibody, is produced by the cells, which biological substance may be further purified in downstream processing.

Process for cell culturing by continuous perfusion

Process for cell culturing by continuous perfusion and alternating tangential flow

We describe a process for the monitoring of contaminant removal during the purification process of a pharmaceutical product produced by a host cell, wherein at least two different samples taken during the purification process of the pharmaceutical product are incubated with at least one protein biochip array and contaminants in the samples bound to the protein biochip array are subsequently detected. Preferably samples are taken before the first purification step and after each subsequent purification step.

Process for the monitoring of contaminant removal during the purification process of a pharmaceutical product produced by a host cell

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Roden, Netherlands

Jose Manuel Coco Martin