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Expression of functional factor VIII in primary human skin fibroblasts after retrovirus-mediated gene transfer. 1990

R C Hoeben, and R C van der Jagt, and F Schoute, and N H van Tilburg, and M P Verbeet, and E Briët, and H van Ormondt, and A J van der Eb
Department of Medical Biochemistry, Sylvius Laboratories, Leiden, The Netherlands.

We have developed a retroviral-vector system for the transfer and expression of a cloned blood clotting factor VIII cDNA. Since inclusion of the complete cDNA into existing vectors is precluded by its large size, we deleted most codons for the B-domain, which is also excised during in vivo maturation of factor VIII. When inserted into the retroviral vector M5-neoR (Laker, C., Stocking, C., Bergholtz, V., Hess, N., DeLamarter, J. F., and Ostertag, W. (1987) Proc. Natl. Acad. Sci. U. S. A. 84, 8458-8462), the sequence was shown to be efficiently expressed in murine fibroblast cell lines, as well as in primary human skin fibroblasts. Upon infection of murine fibroblast cell lines, clones containing only a single copy of the integrated vector-provirus secreted up to 125 milliunits of factor VIII antigen/10(6) cells/day. Equivalent amounts were found in a factor VIII activity assay, which signifies that the factor VIII protein secreted by the infected fibroblasts is fully functional. Primary human skin fibroblasts infected with the vector virus secreted up to 30 milliunits/10(6) cells/day.

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010957 Plasmids Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS. Episomes,Episome,Plasmid
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002872 Chromosome Deletion Actual loss of portion of a chromosome. Monosomy, Partial,Partial Monosomy,Deletion, Chromosome,Deletions, Chromosome,Monosomies, Partial,Partial Monosomies
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D005169 Factor VIII Factor VIII of blood coagulation. Antihemophilic factor that is part of the factor VIII/von Willebrand factor complex. Factor VIII is produced in the liver and acts in the intrinsic pathway of blood coagulation. It serves as a cofactor in factor X activation and this action is markedly enhanced by small amounts of thrombin. Coagulation Factor VIII,Factor VIII Clotting Antigen,Factor VIII Coagulant Antigen,Factor VIII Procoagulant Activity,Thromboplastinogen,Blood Coagulation Factor VIII,F VIII-C,Factor 8,Factor 8 C,Factor Eight,Factor VIIIC,Hyate-C,Hyatt-C,F VIII C,Hyate C,HyateC,Hyatt C,HyattC
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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