Hamster Chinese

Vaccine candidates are based on the two viral surface proteins, gD and gB (80). Recombinant methods are used to express the proteins, either in Chinese hamster ovary (CHO) cells or in baculovims. The proteins are purified as subunits and formulated with different adjuvants. Clinical trials with these vaccine candidates have been performed, but the results to date have not been encouraging. 

Bredinin, Neosidomycin, and SF-2140. Bredinin (62), isolated from the culture filtrates of Eupenicillium brefeldianum (1,4), inhibits the multiplication of L5178Y, HeLa S3, RK-13, mouse L-ceUs, and Chinese hamster cells. GMP can reverse the inhibition by (62), but (62) is not incorporated into the nucleic acids. The inhibition of nucleic acid synthesis and chromosomal damage in the S and G 2 phases that is caused by (62), is reversed by GMP. It blocks the conversion of IMP to XMP and XMP to GMP. In combination with GMP, (62) interferes with intracellular cAMP levels and thereby inhibits cell division. 

B. Cytogenetic analysis in cultured Chinese hamster or human cells... 

L Na -iiidepeiideiit Braiiched-chaiii and aromatic amino acids Ehrlich ascites cells Chinese hamster ovary cells Hepatocytes... 

The different furanones 104 were tested for their potency as inhibitors of PGE2 production both in transfected Chinese hamster ovarian (CHO) cells expressing human COX-2 and in human whole blood. Compound 104r proved to be an orally active and selective COX-2 inhibitor that is devoid of the ulcerogenic effect at >100 times the dose for antiinflammatory, analgesic, and antipyretic effects (99BMC3187). 

FIGURE 2.11 Receptor-occupancy curves for activation of human calcitonin type 2 receptors by the agonist human calcitonin. Ordinates (response as a fraction of the maximal response to human calcitonin). Abscissae (fractional receptor occupancy by human calcitonin). Curves shown for receptors transfected into three cell types human embryonic kidney cells (HEK), Chinese hamster ovary cells (CHO), and Xenopus laevis melanophores. It can be seen that the different cell types lead to differing amplification factors for the conversion from agonist receptor occupancy to tissue response. 

Landry, J., Chretien, P., Laszio, A., Lambert, H. (1991). Phosphorylation of hsp27 during development and decay of thermotolerance in Chinese hamster cells. J. Cell Physiol. 147,93-101. 

Westra, A. Dewey, W.C. (1971). Variation in the sensitivity to heat shock during the cell cycle of Chinese hamster cells in vitro. Inti. J. Radiat. Biol. 19,461-417. 

Dornase alfa is produced by genetically engineered Chinese Hamster ovary cells containing DNA encoding for the native human protein deoxyribunuclease I. It is purified by tangential flow filtration and column chromatography. 

Chinese hamster ovary Chinese hamster V79 Human lymphoid cells/LAZ-007 Human lymphocytes... 

Results of methyl parathion assays involving effects on chromosomes have also been contradictory. For sister chromatid exchange, Waters et al. (1982) reported a positive response in Chinese hamster ovary cells only in the presence of metabolic activation system, while methyl parathion tested positive without a metabolic activation system in Chinese hamster V79 cells (Chen et al. 1981), cultured normal human lymphoid cells (Chen et al. 1981 Gomez-Arroyo et al. 1987 Sobti et al. 1982), and Burkitt s l5miphoma cells (Chen et al. 1981). Chen et al. (1981) found a significant dose-related increase in sister chromatid exchange in both hamster and human cultured cells, but dose-related cell cycle delays were less pronounced in human cell lines than in V79 cells. Negative results were obtained for chromosomal aberrations in human lymphocytes without a metabolic activation system (Kumar et al. 1993). 

Chen HH, Sirianni SR, Huang CC. 1982. Sister chromatid exchanges in Chinese hamster cells treated with seventeen organophosphorus compounds in the presence of a metabolic activation system. Environ Mutagen 4 621-624. 

Sirianni SR, Huang CC. 1980. Comparison of induction of sister chromatid exchange, 8-azaguanine- and ouabain-resistant mutants by cyclophosphamide, ifosfamide and l-(pyridyl-3)-3,3-dimethyltriazene in Chinese hamster cells cultured in diffusion chambers in mice. Carcinogenesis 1 353-355. 

Since our backbone 2 aPNA incorporates six Lys residues in its peptide sequence and is cationic at a physiological pH, we were optimistic that this aPNA would be taken up into cells without the need for any external carrier system. To answer the simple question of whether b2 aPNAs are intemahzed, a standard fluorescence microscopy experiment was performed to see if whole cells that were incubated with a fluorescent-labeled aPNA would internahze labeled material [70]. Chinese Hamster Ovary (CHO) cells in culture were incubated with BODIPY-la-beled TCCCT(b2) at 37 °C for various periods of time. Following incubation, the cells were rinsed in phosphate-buffered sahne (PBS), fixed with 4% formaldehyde at ambient temperature for 20 min, then washed with PBS and stored in a refrigerator until examined by fluorescence microscopy. 

The cytotoxic activities of the 2, 2 -difluoro analog (775) of 737 against Chinese hamster ovary and tumor cells, in comparison with those of 1- -d-arabinofuranosylcytosine ara-C, a drug for leukemia), have been studied 775 is transported the faster through membrane into cells, more effectively phosphorylated by the deoxycytidine kinase (to the 5 -mono-phosphate) and, after conversion into the 5 -triphosphate, more highly accumulated in the cells, with longer duration time, than is ara-C, but nevertheless 775 is incorporated into the DNA to a lesser extent than is ara-C. These characteristics of 775 were discussed. 

HT29 (colorectal) CHO (Chinese hamster ovary) SVM(muntjac cells) BITC > PEITC PEITC > AITC AITC > BITC > PEITC > PITC Musk et al. (5)... 

Canonero, R., Martelli, A., Marinari, U.R. and Brambilla, G. (1990). Mutation induction in Chinese hamster lung V79 cells by five alk-2-enals produced by lipid peroxidation. Mutat. Res. 244, 153-156. 

Romert, L. and Jenssen, D. (1983). Rabbit alveolar macrophage-mediated mutagenesis of polycyclic aromatic hydrocarbons in V79 Chinese hamster cells. Mutat. Res. Ill, 245-252. 

Belcourt, M.F. Hodnick, W. F. Rockwell, S. Sartorelli, A. C. Bioactivation of mitomycin antibiotics by aerobic and hypoxic Chinese hamster ovary cells overexpressing DT-diaphorase. Biochem. Pharm. 1996, 51, 1669-1678. 

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