Characterization of echoviruses that bind decay accelerating factor (CD55): evidence that some haemagglutinating strains use more than one cellular receptor.
Several echoviruses (EVs) have previously been shown to use decay accelerating factor (DAF) as a cellular receptor. Since DAF is expressed on erythrocytes, EVs that use this receptor cause haemagglutination. Here we show that all EVs that haemagglutinate do so via attachment to DAF and that this interaction can be inhibited by a monoclonal antibody (MAb) specific for DAF domain SCR3. Although the viruses haemagglutinate via DAF some can bind to rhabdomyosarcoma cells from which DAF has been removed and infect in the presence of a MAb against DAF. This suggests that some EVs have the capacity to interact with more than one cellular receptor.
School of Animal and Microbial Sciences, University of Reading, Whiteknights, UK.
R M
RM
Powell
V
V
Schmitt
T
T
Ward
I
I
Goodfellow
D J
DJ
Evans
J W
JW
Almond
D000818:Animals; D000911:Antibodies, Monoclonal / Q000378:metabolism; D018958:CD55 Antigens / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D002460:Cell Line; D004458:Echovirus 6, Human / Q000378:metabolism; D029822:Enterovirus B, Human / Q000378:metabolism*; D006384:Hemagglutination; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D051379:Mice; D043265:Phosphatidylinositol Diacylglycerol-Lyase; D011991:Receptors, Virus / Q000378:metabolism*; D013462:Sulfur Radioisotopes; D014407:Tumor Cells, Cultured; D010738:Type C Phospholipases / Q000378:metabolism / Q000494:pharmacology
D000911:Antibodies, Monoclonal; D018958:CD55 Antigens; D011991:Receptors, Virus; D013462:Sulfur Radioisotopes; D010738:Type C Phospholipases; D043265:Phosphatidylinositol Diacylglycerol-Lyase