Abstract:
Cell culture media comprising antioxidants are provided herein as are methods of using the media for cell culturing and polypeptide production from cells. Compositions comprising polypeptides, such as therapeutic polypeptides, produced by the methods herein are also provided.
Abstract:
Cell culture media comprising antioxidants are provided herein as are methods of using the media for cell culturing and polypeptide production from cells. Compositions comprising polypeptides, such as therapeutic polypeptides, produced by the methods herein are also provided.
Abstract:
The present invention relates to a method for producing natural killer cells (hereinafter, referred to as “NK cells”), NK cells produced thereby, and a composition for treating cancers and infectious diseases containing the same. The present invention provides a method for producing NK cells, which maintain high cytotoxicity and cell viability to exhibit high therapeutic effects against cancers and infectious diseases and can be cultured ex vivo at high efficiency and high concentration. In addition, a culture method which maintains cell concentration at a constant level is used for the production of NK cells, and thus the overgrowth of the cells can be prevented so that the cells can be maintained at an optimal state. Particularly, even when the cells are thawed after freezing, the function of the cells is not impaired, and the NK cells can maintain high cell viability and cytotoxicity. Thus, the NK cells can be easily stored and supplied in a liquid or frozen state without needing an additional treatment process.
Abstract:
It is an object of the present invention to allow a cell to produce a protein at a high level using a medium containing an enzymatic degradation product of fish meat or a fish meat extract. A method of culturing a cell comprising starting culturing in an initial medium and feeding at least once a feed medium to the initial medium during culturing, wherein at least one of the initial medium or the feed medium contains an enzymatic degradation product of fish meat or a fish meat extract added thereto. A method of producing a protein of interest using the above culture method.
Abstract:
The present invention relates generally to glutamine-free cell culture media supplemented with asparagine. The invention further concerns the production of recombinant proteins, such as antibodies, in asparagine-supplemented glutamine-free mammalian cell culture.
Abstract:
The present disclosure relates to a method of reducing heterogeneity in antibodies during culturing, wherein the heterogeneity is due to proportion of charge variant of the antibody. The disclosure also comprises a process of growing cells in a cell culture system that results in antibodies with the reduced heterogeneity. In one embodiment antibody heterogeneity is reduced by the addition of divalent transitional metal ions such as zinc (Zn2+) to the cell culture medium. In another embodiment antibody heterogeneity is reduced by decreasing the osmolality of the cell culture medium.
Abstract:
The present invention relates to hematopoietic cells, and more specifically to methods for long-term in vitro culturing and ex vivo expansion of hematopoietic cells. The present invention also provides compositions useful for culturing cells, such as media for culturing hematopoietic cells, specifically haematopoietic stem cells (HSC) and haematopoietic progenitor cells (HPC). The present invention further provides compositions including growth factor combinations and methods utilizing altered growth and environmental conditions that are applicable in vitro culturing and to ex vivo expansion of HSC and/or HPC.
Abstract:
It has been found out that among antibodies showing reactivity with wild type TGF-α, antibodies less reactive with G79A-substituted TGF-α have an excellent growth-suppressing effect on cancer cells having a mutated Ras gene. Further, it has been found out that most of these antibodies have an activity of inhibiting EGFR tyrosine phosphorylation and/or an induction-suppressing activity on vascular endothelial cells.
Abstract:
The present invention provides anti-mortalin peptide antibodies having stronger anticancer effects than known anti-mortalin antibodies, hybridomas producing such antibodies, and anticancer agents using such antibodies. Specifically, a hybridoma C-26 strain (FERM P-21875) and a hybridoma C-69 strain (FERM P-21876) producing anti-mortalin monoclonal antibodies having the function of being internalized by cancer cells and specificity to mortalin antigens, and having the good function of suppressing the cancer cell proliferation in vivo were obtained from hybridoma clones obtained using as an immunogen cocktail of the 2 types of peptide containing “LFGRAP” and “KAMQDAEVSKSDIGEVI” epitopes for an anti-mortalin antibody having the function of being internalized by cancer cells. Thus, anticancer agents containing the monoclonal antibodies as active ingredients could also be provided. Moreover, the epitope sequences recognized by these monoclonal antibodies were confirmed to be “EVILVG” and “DLFGR.”
Abstract:
Based on the observation of the cooperation of osteopontin (OPN) and matrixmetalloproteinase-9 (MMP-9) in the promotion of the metastatic phenotype, therapies and diagnostic assays are disclosed for the treatment of a tumor that overexpresses OPN, such as hepatocellular carcinoma (HCC), for example metastatic HCC. In one example, methods of treating a tumor include administration of an agent that reduces cellular invasion resulting from the interaction between a fragment of OPN (OPN-5kD) generated by MMP-9 cleavage and CD44 receptor. Examples of such agents include fragments of OPN-5kD and antibodies specific for OPN-5kD. Therapeutic compositions are also provided that include such agents. Also provided are methods of diagnosing or prognosing a tumor, for example by detecting expression of OPN-5kD peptide or OPN-c mRNA in a biological sample obtained from the subject. Also provided are antibodies that specifically bind OPN-5kD.