Biomaterial Database

Altered interaction between Sendai virus and a Chinese hamster cell mutant with defective cholesterol synthesis. 1987

A Yoshimura, and T Kobayashi, and K Hidaka, and M Kuwano, and S Ohnishi

Department of Biochemistry, Oita Medical School, Japan.

An amphotericin B-resistant mutant (AMBr-1) isolated from the Chinese hamster V79 cell line is defective in a pathway for sterol synthesis and contains a much reduced free cholesterol level as compared with the parental V79. The character of the plasma membrane of AMBr-1 was compared with that of V79 by measuring the fusion with the envelope of the Sendai virus and also by measuring membrane fluidity: AMBr-1 was found to be more sensitive to Sendai virus-induced cytolysis than V79. Both assays for membrane-permeability change and electron spin resonance (ESR) study showed an enhanced response to the fusion between viral envelope and plasma membrane in AMBr-1 cells. Measurement of the fluorescence polarization for 1,6-diphenyl-1,3,5-hexatriene suggested that the membrane of AMBr-1 was more fluid than that of V79. This aberrant nature of the cell membrane of AMBr-1 might be caused by the altered membranous sterol content.

UI	MeSH Term	Description	Entries
D008560	Membrane Fluidity	The motion of phospholipid molecules within the lipid bilayer, dependent on the classes of phospholipids present, their fatty acid composition and degree of unsaturation of the acyl chains, the cholesterol concentration, and temperature.	Bilayer Fluidity,Bilayer Fluidities,Fluidities, Bilayer,Fluidities, Membrane,Fluidity, Bilayer,Fluidity, Membrane,Membrane Fluidities
D008561	Membrane Fusion	The adherence and merging of cell membranes, intracellular membranes, or artificial membranes to each other or to viruses, parasites, or interstitial particles through a variety of chemical and physical processes.	Fusion, Membrane,Fusions, Membrane,Membrane Fusions
D009154	Mutation	Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.	Mutations
D010222	Parainfluenza Virus 1, Human	A species of RESPIROVIRUS also called hemadsorption virus 2 (HA2), which causes laryngotracheitis in humans, especially children.	Hemadsorption Virus 2,Human parainfluenza virus 1,Para-Influenza Virus Type 1,Parainfluenza Virus Type 1,Para Influenza Virus Type 1
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D002462	Cell Membrane	The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.	Plasma Membrane,Cytoplasmic Membrane,Cell Membranes,Cytoplasmic Membranes,Membrane, Cell,Membrane, Cytoplasmic,Membrane, Plasma,Membranes, Cell,Membranes, Cytoplasmic,Membranes, Plasma,Plasma Membranes
D002463	Cell Membrane Permeability	A quality of cell membranes which permits the passage of solvents and solutes into and out of cells.	Permeability, Cell Membrane
D002784	Cholesterol	The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils.	Epicholesterol
D004161	Diphenylhexatriene	A fluorescent compound that emits light only in specific configurations in certain lipid media. It is used as a tool in the study of membrane lipids.	1,6-Diphenyl-1,3,5-hexatriene,1,6-Diphenylhexatriene,1,6 Diphenylhexatriene
D004578	Electron Spin Resonance Spectroscopy	A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.	ENDOR,Electron Nuclear Double Resonance,Electron Paramagnetic Resonance,Paramagnetic Resonance,Electron Spin Resonance,Paramagnetic Resonance, Electron,Resonance, Electron Paramagnetic,Resonance, Electron Spin,Resonance, Paramagnetic