نتایج جستجو برای: stable cho cell lines
تعداد نتایج: 2020869 فیلتر نتایج به سال:
Background In early development stages of biologicals there is often more than one molecule against a specific target. A careful candidate evaluation is crucial to choose an optimal lead variant for further development. Complex biologicals are typically produced in CHO cells and host cells as well as the process are known to influence important molecule features such as glycan patterns or activ...
A major bottleneck in the manufacture of recombinant therapeutic proteins is the time and effort needed for the generation of stable, high-producing mammalian cell lines. Conventional gene transfer methods for stable cell line generation rely on random transgene integration, resulting in unpredictable and highly variable levels of expression of the transgene in individual clones [1,2]. As a con...
We report the discovery and validation of a novel CHO cell engineering target for improving IgG expression, serpin peptidase inhibitor, clade B, member 1 (Serpinb1). Transcriptomic studies using microarrays revealed that Serpinb1 was up-regulated in cultures with IgG heavy and light chain transcription transiently repressed compared with cultures treated with non-targeting siRNA. As proof of co...
Xeroderma pigmentosum (XP) is an autosomal recessive human disease, characterized by an extreme sensitivity to sunlight, caused by the inability of cells to repair UV light-induced damage to DNA. Cell fusion was used to transfer fragments of Chinese hamster ovary (CHO) chromosomes into XP cells. The hybrid cells exhibited UV resistance and DNA repair characteristics comparable to those expresse...
Chinese hamster ovary (CHO) cells, first isolated in 1957, are the preferred production host for many therapeutic proteins. Although genetic heterogeneity among CHO cell lines has been well documented, a systematic, nucleotide-resolution characterization of their genotypic differences has been stymied by the lack of a unifying genomic resource for CHO cells. Here we report a 2.4-Gb draft genome...
In the present study, we have identified species-specific housekeeping genes (HKGs) for Chinese Hamster Ovary (CHO) cells using data from microarray gene expression profiling. HKGs suitable for quantitative RT-PCR normalization should display relatively stable expression levels across experimental conditions. We analyzed transcription profiles of several IgG-producing recombinant CHO cell lines...
Background and Objectives: Several studies have been carried out on the use of cell lines in researches, production and processing of drugs and biological products, and on the identification of toxicity and efficacy.The present study was conducted to determine the characteristics of BHK-21 cell lines as a suitable substrate for use in vaccine production and quality control, viral culture and re...
Four water-soluble Fusarium metabolites (fumonisin B1, fusaric acid, butenolide and moniliformin), water-insoluble pigment (8-O-methylbostrycoidin), and an Alternaria metabolite (AAL-toxin) were tested for relative cytotoxicity to five established mammalian cell lines. Butenolide was the most cytotoxic to all five cell lines. LC50s were; 1 microgram/ml to rat hepatoma (RH) (tumors derived from ...
Prox1 Facilitates Transfected CHO Cell Proliferation through Activation of the AKT Signaling Pathway
The homeobox transcription factor Prox1 plays an important role in the development of many embryonic organs. Previous studies indicated that Prox1 facilitates hepatic progenitor-cells proliferation. However, the underlying mechanism of Prox1 in tumor genesis, formation, and progression are poorly understood and need to be exploited. Herein, Chinese Hamster Ovary (CHO) cells were transfected and...
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