Abstract: A method for achieving site specific integration of a desired DNA at a target site in a mammalian cell via homologous recombination is described. This method provides for the reproducible selection of cell lines wherein a desired DNA is integrated at a predetermined transcriptionally active site previously marked with a marker plasmid. The method is particularly suitable for the production of mammalian cell lines which secrete mammalian proteins at high levels, in particular immunoglobulins. Novel vectors and vector combinations for use in the subject cloning method are also provided.
Type:
Application
Filed:
April 1, 2002
Publication date:
December 19, 2002
Applicant:
IDEC PHARMACEUTICALS Corp.
Inventors:
Mitchell R. Reff, Richard Spence Barnett, Karen Retta McLachlan
Abstract: A method for achieving site specific integration of a desired DNA at a target site in a mammalian cell via homologous recombination is described. This method provides for the reproducible selection of cell lines wherein a desired DNA is integrated at a predetermined transcriptionally active site previously marked with a marker plasmid. The method is particularly suitable for the production of mammalian cell lines which secrete mammalian proteins at high levels, in particular immunoglobulins. Novel vectors and vector combinations for use in the subject cloning method are also provided.
Type:
Grant
Filed:
June 30, 1999
Date of Patent:
July 2, 2002
Assignee:
IDEC Pharmaceuticals Corp.
Inventors:
Mitchell R. Reff, Richard Spence Barnett, Karen Retta McLachlan