182results about How to "High protein yield" patented technology

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.

The present invention describes methods and processes for the production of proteins, particularly glycoproteins, by animal cell or mammalian cell culture, preferably, but not limited to, fed-batch cell cultures. In one aspect, the methods comprise at least two temperature shifts performed during the culturing period, in which the temperature is lower at the end of the culturing period than at the time of initial cell culture. Throughout their duration, the culturing processes of the invention involving two or more downward shifts in temperature sustain a high viability of the cultured cells, and can yield an increased end titer of protein product, and a high quality of protein product, as determined, e.g., by sialic acid content of the produced protein. In another aspect, the methods comprise the delayed addition of polyanionic compound during the culturing period. The delayed addition of polyanionic compound sustains a high viability of the cultured cells, and can extend the growth phase, delay the onset of the death phase, and arrest the death phase.

The present invention provides an improved expression system for the production of recombinant polypeptides utilizing auxotrophic selectable markers. In addition, the present invention provides improved recombinant protein production in host cells through the improved regulation of expression.

Compositions and methods are provided for the enhanced in vitro synthesis of protein molecules, by optimizing the metabolism of amino acids present in the reaction mix, preferably all amino acids in the reaction mixture. By performing synthesis with extracts from genetically modified microbial strains that are deficient in multiple amino acid metabolizing enzymes reduces the enzymatic activities responsible for catalyzing these reactions and improves the overall yield of synthesis.

The present invention relates to blocking the activity of IL-TIF polypeptide molecules. IL-TIF is a cytokine involved in inflammatory processes and human disease. The present invention includes anti-IL-TIF antibodies and binding partners, as well as methods for antagonizing IL-TIF using such antibodies and binding partners in IL-TIF-related human inflammatory diseases, amongst other uses disclosed.

The invention provides compositions that increase the mobilization, homing, expansion, and / or differentiation of stem cells and methods of using the same for the treatment of mammals.

The present invention relates to methods for the separation of various components from eggs. More particularly, the present invention relates to methods for the separation of proteins and lipids from eggs, including technical eggs (inedible) or edible eggs, yolks or whites, which comprises cross-linking the lipids of eggs with a cross-linking reagent. In an embodiment, the method includes separating the proteins from the cross-linked lipids. In an embodiment, the method includes the separation of various components associated with the cross-linked lipids. The methods disclosed herein allow for the isolation of multiple different components from the egg in an efficient, cost-effective manner without compromising the recovery process of the components or their subsequent utility in various applications or compositions. The compositions and isolated components obtained by the methods of the invention can be used in pharmaceutical, medical, nutritional, cosmetic or health applications.

The present invention provides a newly identified B7 receptor, zB7R1 that functions as lymphocyte inhibitory receptor, which is a PD-1-like molecule and is expressed on T cells. The present invention also provides the discovery of zB7R1's ability to bind to CD155. Methods and compositions for modulating zB7R1-mediated negative signaling and interfering with the interaction of its counter-receptor for therapeutic, diagnostic and research purposes are also provided.