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Journal of Cell Science, Vol 28, Issue 1 179-188, Copyright © 1977 by Company of Biologists

JOURNAL ARTICLES

Studies of membrane fusion. I. Paramyxovirus-induced cell fusion, a scanning electron-microscope study

S Knutton, D Jackson and M Ford

Fusion of erythrocytes and HeLa cells with Sendai and Newcastle disease viruses has been studied by scanning electron microscopy. Most virus particles are spherical but vary in diameter from approximately 200 to approximately 600 nm. At 4 degrees C virus particles bind randomly to the cell surface and at high cell densities cross-linking of adjacent cells by virus particles results in cell agglutination. Cell-cell fusion takes place when the agglutinated cell suspension is warmed to 37 degrees C. Fusion is initiated at sites of cell-cell contact and is accompanied in all cases by cell swelling. In the case of suspension HeLa cells, virally mediated cell swelling involves an 'unfolding' of cell surface microvilli and results in the formation of smooth-surfaced single or fused cells. With erythrocytes, swelling results in haemolysis. There is a dramatic reduction in the numbers of virus particles bound to cells following fusion.


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D. Stoltz, R. Lapointe, A. Makkay, and M. Cusson
Exposure of ichnovirus particles to digitonin leads to enhanced infectivity and induces fusion from without in an in vitro model system
J. Gen. Virol., November 1, 2007; 88(11): 2977 - 2984.
[Abstract] [Full Text] [PDF]


© The Company of Biologists Ltd 1977