Abstract: The present invention provides improved cell culture systems that allow optimum production of recombinant proteins. Among other things, the present invention provides methods of cell culture including a step of cultivating cells adapted to growth factor-free medium in a cell culture system that provides at least one growth factor.

Abstract: Nucleic acid molecules modified to enhance recombinant protein expression, e.g., that of A? peptide binding antibodies, and/or to reduce or eliminate mis-spliced and/or intron read-through (IRT) by-products are disclosed. The invention also provides methods for producing A? peptide binding antibodies devoid of mis-spliced and/or intron read-through by-products by expression of such nucleic acid molecules under cell culture conditions suitable for recombinant A? peptide binding antibody expression.

Abstract: The present invention provides methods for systematically identifying genes and proteins and related pathways that maximize protein expression and secretion by expression profiling analysis. The present invention further provides methods for manipulating the identified genes and proteins to engineer improved cell lines.

Abstract: Methods of adapting cells, e.g., mammalian cells, to a cell culture process are provided. When the adapted cells are genetically modified and used for protein production, they exhibit beneficial characteristics, such as being able to attain higher cell densities and/or achieve a higher overall yield of the produced protein.

Abstract: Nucleic acid molecules modified to enhance recombinant protein, e.g., antibody, expression and/or reduce or eliminate mis-spliced and/or intron read-through (IRT) by-products are disclosed. The invention also provides methods for producing proteins devoid of mis-spliced and/or intron read-through by-products by the use of such vectors in host cells under cell culture conditions suitable for recombinant protein expression.

Abstract: The present invention provides an oligonucleotide array capable of identifying genes and related pathways involved with the induction of a particular phenotype by a cell line, e.g., the genes and related pathways involved with the induction of transgene expression by the cell line. The invention is particularly useful when there is little or no information about the genome of the cell line being studied, because it provides methods for identifying consensus sequences for known and previously undiscovered genes, and for designing oligonucleotide probes to the identified consensus sequences. Additionally, when the array is to be used to determine optimal conditions for expression of a transgene by the cell line, the invention teaches methods of including oligonucleotide probes to transgene sequences in the array. The invention also provides methods of using the array to identify genes and related pathways involved with the induction of a particular cell line phenotype.

Abstract: The present invention provides an oligonucleotide array capable of identifying genes and related pathways involved with the induction of a particular phenotype by a cell line, e.g., the genes and related pathways involved with the induction of transgene expression by the cell line. The invention is particularly useful when there is little or no information about the genome of the cell line being studied, because it provides methods for identifying consensus sequences for known and previously undiscovered genes, and for designing oligonucleotide probes to the identified consensus sequences. Additionally, when the array is to be used to determine optimal conditions for expression of a transgene by the cell line, the invention teaches methods of including oligonucleotide probes to transgene sequences in the array. The invention also provides methods of using the array to identify genes and related pathways involved with the induction of a particular cell line phenotype.