CHO Quasispecies—Implications for Manufacturing Processes
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Recombinant proteins are gaining in importance for therapeutic applications. The proteins are expressed in stable cell lines, within which recombinant DNA has incorporated into the host cells genome. Identification and isolation of extremely high producers ...
Conditionally immortalized human cells are valuable substrates for basic biologic studies, as well as for the production of specific proteins and for the creation of bioartificial organs. We previously demonstrated that the lentivector-mediated transductio ...
The final glycosylation pattern of recombinant proteins might be determined by the choice of the host cell, cell culture conditions and the purification. Each step influences glycosylation and improved glycosylation of the product may thus be obtained by c ...
In vertebrates, pigment cells account for a small percentage of the total cell population and they intermingle with other cell types. This makes it difficult to isolate them for analyzes of their functions in the context of development. To alleviate such d ...
Exposure to human serum induces the lysis of xenogeneic cells through natural antibodies and complement activation. The carbohydrate Galactose-alpha1,3-Galactose (Gal-alpha1,3-Gal) epitope, has been shown to be the principal antigenic determinant on target ...
DNA-calcium phosphate coprecipitates have been used for 30 years as an efficient method to introduce genetic material into cells. The method involves simple solutions that can be prepared or purchased by the experimentalist. All the numerous variations of ...
Fluorescent proteins expressed in mammalian cells can be quantified quickly and noninvasively with a standard fluorescence plate reader. We have previously exploited this quality in cell growth assessment (Hunt et al., 1999b). In this work, different CHO c ...
The zebrafish has emerged over the last decade as a powerful model system for understanding molecular and cellular aspects of vertebrate development and disease processes. Because of the implications for, and applications to human health, the vast majority ...
Current restrictions for human cell-based therapies have been related to technological limitations with regards to cellular proliferation capacity and maintenance of differentiated phenotype for primary human cell culture. In our experience, we have seen t ...
Various methods exist to transfect mammalian cells in culture. It is generally accepted that individual methods have to be optimized for each of the cell lines or cell types used. Despitethe use of optimized protocols, significant day-to-day variationsin t ...
