Generation of stable, high-producing cho cell lines by lentiviral vector-mediated gene transfer in serum-free suspension culture
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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 ...
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 ...
Fluorescence in situ hybridization (FISH, 15) and high density, non-selective long term perfusion culture were used to study aspects of genetic stability and productivity in recombinant CHO cells. We analysed the distribution and structure of recombinant a ...
Adeno-associated virus (AAV)-based vectors belong to the most promising gene transfer vectors in clinical studies. To provide vector for late-stage clinical trials as well as for a potential commercial phase, a scalable, cGMP-compliant process is required. ...
Human immunodeficiency virus type 1-based lentivirus vectors containing the green fluorescent protein (GFP) gene were used to transduce murine Lin(-) c-kit(+) Sca1(+) primitive hematopoietic progenitor cells. Following transduction, the cells were plated i ...
Drug-inducible systems allowing the control of gene expression in mammalian cells are invaluable tools for genetic research, and could also fulfill essential roles in gene- and cell-based therapy. Currently available systems, however, often have limited in ...
Microinjection is a gene transfer technique enabling partial control of plasmid delivery into the nucleus or cytoplasm of cultured animal cells. Here this method was used to establish various recombinant mammalian cell lines. The injection volume was estim ...
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 ...
Recombinant proteins are important for biomedical research and for the treatment of human disease. Therefore it is necessary to develop reproducible bioprocesses to rapidly produce proteins of adequate quality and quantity. Expression in mammalian cells is ...
Neurotrophic factors hold promise for the treatment of neurodegenerative diseases. Intrathecal transplantation of polymer encapsulated cell lines genetically engineered to release neurotrophic factors provides a means to deliver them continuously behind th ...