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Modulation of Coronavirus-mediated Cell Fusion by Homeostatic Control of Cholesterol and Fatty Acid Metabolism by Marguerite Cervin; Robert Anderson is a Medicine article available to read on EtoBox.

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## Abstract Cellular susceptibility to fusion mediated by murine coronavirus (mouse hepatitis virus, MHV strain A59) was separated into lipid‐dependent and lipid‐independent mechanisms with the use of subclones and selected mutants of mouse L‐2 fibroblasts. Fusion‐resistant L‐2 cell mutants had similar cholesterol and fatty acid composition as did their fusion‐susceptible parent subclone, and were presumably deficient in a genetically mutable non‐lipid, host cell factor (e.g., fusion protein receptor). On the other hand, cellular sensitivity to virus fusion, which is known to be influenced by cell cholesterol content [Daya et al., 1988], was shown further to be modulated by homeostatic alterations in fatty acid metabolism. Cholesterol supplementation of mouse L‐2 fibroblasts or of peritoneal macrophages from MHV‐susceptible mice elevated susceptibility to viral fusion. Increased fusion susceptibility occurred in cholesterol‐supplemented L‐2 cells in the absence of any detectable alterations i n host cell fatty acid composition, thus demonstrating fusion enhancement by cholesterol alone. L‐2 cells cloned by limiting dilution in normal (not cholesterol‐supplemented) medium were found

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Author

Marguerite Cervin; Robert Anderson

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0146-6615)

Published

1991

Language

EN

Field

Medicine (Health Sciences)