Tae Ho Byun

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Recombinant Chinese hamster ovary (CHO) parental clones expressing a humanized antibody against S surface antigen of hepatitis B virus were obtained by cotransfection of heavy chain (HC) and light chain (LC) cDNA expression vectors into dihydrofolate reductase (DHFR)-deficient CHO cells. When 23 representative parental clones were subjected to stepwise(More)
Sodium butyrate (NaBu) is used as a productivity enhancer for the production of therapeutic recombinant proteins in Chinese hamster ovary (CHO) cells. However, NaBu is well-known for having a cytotoxic effect, thereby inducing apoptosis. As an endeavor to reduce this defect, we studied 11 antioxidants known for inhibiting apoptosis, according to a(More)
The surface plasmon resonance (SPR) biosensor measures the real-time kinetics of noncovalent interaction between a receptor and its ligand. Monoclonal antibodies (mAbs) against recombinant factor VIII (rFVIII) were screened from 127 mAb candidates using the SPR biosensor for the purpose of affinity purification of rFVIII. Each mAb showed a different(More)
This study was carried out to evaluate the mutagenic potential of recombinant antihemophilic factor VIII (GC-gamma AHF). Salmonella typhimurium (S. typhimurium) reversion assay with/without histidine moiety, chromosomal aberration assay on Chinese hamster lung (CHL) fibroblast cells and in vivo micronucleus assay using mouse bone marrow cells and supravital(More)
In this study, we examined the development of the upper eyelids to provide a basic understanding of gross anatomical structures and information relative to mechanisms of congenital anomalies in the upper eyelids. We studied the upper eyelids by external and histological observation in 48 human embryos and in fetuses from 5 to 36 weeks postfertilization. The(More)
Vascular endothelial growth factors (VEGFs) are a family of proteins that mediate angiogenesis. VEGF165 is a VEGF-A isoform and has been extensively studied owing to its potential use in therapeutic angiogenesis. This study established Chinese hamster ovary (CHO) cells overexpressing recombinant human VEGF165 (rhVEGF165) protein. The production rate of the(More)
beta-Domain deleted recombinant factor VIII (GC-rAHF), newly developed by Korea Green Cross Co., is a novel therapeutic for hemophiliacs and is currently under clinical evaluation. The general pharmacological properties of this drug were evaluated using mice, rats, guinea pigs and rabbits. Intravenous doses of 5 to 500 IU/kg were assayed in several tests to(More)
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