Electron microscopic evidence for bridges between bovine respiratory syncytial virus particles. 1988

F Bélanger, and L Berthiaume, and R Alain, and G Lussier, and M Trudel
Centre de Recherche en Virologie, Institut Armand-Frappier, Université du Québec, Laval, Canada.

Electron microscopic examination of ultrathin sections of a continuous cell line of ovine kidney (OK) origin, infected by bovine respiratory syncytial virus (BRSV), revealed the presence of well defined bridges between virus particles. This is the first report of this novel structure. Observation of ultrathin sections of human RSV Long strain also grown on OK cells did not show inter-particle bridges and therefore suggested that this structure could be specific to BRSV. The biological significance of these bridges is not clear at this time; a possibility is that the bridges are formed by the fusion protein of BRSV which is known to cause cell fusion. Besides the structural implications, the importance is in relation to purification strategies for this virus, which must now take into account that most of the viral particles occur in large aggregates.

UI MeSH Term Description Entries
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D012136 Respiratory Syncytial Viruses A group of viruses in the PNEUMOVIRUS genus causing respiratory infections in various mammals. Humans and cattle are most affected but infections in goats and sheep have also been reported. Chimpanzee Coryza Agent,Orthopneumovirus,RSV Respiratory Syncytial Virus,Chimpanzee Coryza Agents,Coryza Agent, Chimpanzee,Orthopneumoviruses,Respiratory Syncytial Virus,Syncytial Virus, Respiratory,Virus, Respiratory Syncytial
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014771 Virion The infective system of a virus, composed of the viral genome, a protein core, and a protein coat called a capsid, which may be naked or enclosed in a lipoprotein envelope called the peplos. Virus Particle,Viral Particle,Viral Particles,Particle, Viral,Particle, Virus,Particles, Viral,Particles, Virus,Virions,Virus Particles

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