Abstract: A cell culture medium comprising tyrosine at a concentration of at least 3 mM and polyvinylalcohol (PVA).

Abstract: A cell culture medium comprising tyrosine at a concentration of at least 3 mM and polyvinylalcohol (PVA).

Abstract: An improved system for large scale production of polypeptides in cell culture is provided. In accordance with the present invention, cells expressing a polypeptide of interest are grown in media that contain copper, glutamate or both. The use of such a system allows production of polypeptides in which misfolding and/or aggregation are reduced, and in which total glycosylation is increased. Polypeptides expressed in accordance with the present invention may be advantageously used in the preparation of pharmaceutical, agricultural or other commercial compositions.

Abstract: The present invention provides, among other things methods of increasing cell density, viability and/or titer in a cell culture including steps of adding a composition comprising iron to the cell culture.

Abstract: This invention relates to methods for rationally designing cell culture media for use in cell cultures, e.g., cell cultures employed in polypeptide production; cell culture media designed with the disclosed methods; methods of producing a polypeptide of interest, e.g., an antibody, using such media; polypeptides produced using the methods and media disclosed herein; and pharmaceuticals compositions containing such polypeptides. The rationally designed media contain a concentration of an amino acid that is calculated for use in cell mass, a concentration of the amino acid that is calculated for use in cell maintenance, and a concentration of the amino acid that is calculated for incorporation into the polypeptide of interest.

Abstract: This invention relates to methods for rationally designing cell culture media for use in cell cultures, e.g., cell cultures employed in polypeptide production; cell culture media designed with the disclosed methods; methods of producing a polypeptide of interest, e.g., an antibody, using such media; polypeptides produced using the methods and media disclosed herein; and pharmaceuticals compositions containing such polypeptides. The rationally designed media contain a concentration of an amino acid that is calculated for use in cell mass, a concentration of the amino acid that is calculated for use in cell maintenance, and a concentration of the amino acid that is calculated for incorporation into the polypeptide of interest.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture is provided. In accordance with the present invention, cells expressing the protein or polypeptide of interest are grown in media that comprise a glycolysis-inhibiting substance. Additionally and/or alternatively, cells expressing the protein or polypeptide of interest are grown in media in which glutamine is limited. The use of such a system allows high levels of protein or polypeptide production and lessens accumulation of undesirable metabolic waste products such as lactate. Proteins and polypeptides expressed in accordance with the present invention may be advantageously used in the preparation of pharmaceutical, immunogenic, agricultural or other commercial compositions.

Abstract: Methods and processes for improved recombinant protein production are provided. The methods are useful for production of growth factors, particularly those of the TGF-? superfamily, including bone morphogenetic proteins (BMPs), such as BMP-2. Suitable host cells are cultured in media where iron is present at a concentration of at least 2.25 ?M and if pyridoxal is present, it makes up less than 55% of the molar concentration of vitamin B6 in the media.

Abstract: Methods and processes for improved recombinant protein production are provided. The methods are useful for production of growth factors, particularly those of the TGF-? superfamily, including bone morphogenetic proteins (BMPs), such as BMP-2. Suitable host cells are cultured in media where iron is present at a concentration of at least 2.25 ?M and if pyridoxal is present, it makes up less than 55% of the molar concentration of vitamin B6 in the media.

Abstract: An improved system for large scale production of polypeptides in cell culture is provided. In accordance with the present invention, cells expressing a polypeptide of interest are grown in media that contain copper, glutamate or both. The use of such a system allows production of polypeptides in which misfolding and/or aggregation are reduced, and in which total glycosylation is increased. Polypeptides expressed in accordance with the present invention may be advantageously used in the preparation of pharmaceutical, agricultural or other commercial compositions.

Abstract: Methods of producing a protein in cell culture comprising an anti-senescence compound, such as the antioxidant carnosine, are provided. According to teachings of the present invention, cells grown in a cell culture medium comprising an anti-senescence compound exhibit increased viability and productivity. Furthermore, cell cultures grown in the presence of an anti-senescence compound exhibit decreased levels of high molecular weight aggregates in the cell culture medium.

Abstract: Methods of improving protein production in animal cell cultures are provided. Cell culture methods are presented wherein glucose is fed in a restricted manner to cell culture; this restricted feeding of glucose to the cell culture results in lactate production being controlled to a low level. The restricted feeding of glucose in a fed-batch process is not accomplished through a constant-rate feeding of glucose, and the restricted feeding need not depend on sampling. Instead, restricted feeding of glucose to the culture is accomplished through feeding of glucose to the culture at a rate that is a function of an expected or a premodeled rate of glucose consumption by the animal cells when exposed to medium containing a high level of glucose. Because lactate production is controlled to low levels, recombinant protein production is increased.

Abstract: This invention relates to methods for rationally designing cell culture media for use in cell cultures, e.g., cell cultures employed in polypeptide production; cell culture media designed with the disclosed methods; methods of producing a polypeptide of interest, e.g., an antibody, using such media; polypeptides produced using the methods and media disclosed herein; and pharmaceuticals compositions containing such polypeptides. The rationally designed media contain a concentration of an amino acid that is calculated for use in cell mass, a concentration of the amino acid that is calculated for use in cell maintenance, and a concentration of the amino acid that is calculated for incorporation into the polypeptide of interest.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.

Abstract: Methods of producing a protein in cell culture comprising an anti-senescence compound, such as the antioxidant carnosine, are provided. According to teachings of the present invention, cells grown in a cell culture medium comprising an anti-senescence compound exhibit increased viability and productivity. Furthermore, cell cultures grown in the presence of an anti-senescence compound exhibit decreased levels of high molecular weight aggregates in the cell culture medium.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.

Abstract: An improved system for large scale production of proteins and/or polypeptides in cell culture, particularly in media characterized by one or more of: i) a cumulative amino acid concentration greater than about 70 mM; ii) a molar cumulative glutamine to cumulative asparagine ratio of less than about 2; iii) a molar cumulative glutamine to cumulative total amino acid ratio of less than about 0.2; iv) a molar cumulative inorganic ion to cumulative total amino acid ratio between about 0.4 to 1; or v) a combined cumulative glutamine and cumulative asparagine concentration between about 16 and 36 mM, is provided. The use of such a system allows high levels of protein production and lessens accumulation of certain undesirable factors such as ammonium and/or lactate. Additionally, culture methods including a temperature shift, typically including a decrease in temperature when the culture has reached about 20-80% of it maximal cell density, are provided.