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. 1982 Mar;41(3):958–964. doi: 10.1128/jvi.41.3.958-964.1982

Adsorption of Rous sarcoma virus to genetically susceptible and resistant chicken cells studied by laser flow cytometry.

M F Notter, J F Leary, P C Balduzzi
PMCID: PMC256832  PMID: 6284984

Abstract

Quantitative binding of Rous sarcoma virus (RSV) of different antigenic subgroups to chicken cells was examined by using a laser flow cytometer/cell sorter. RSV of subgroups A, C, and E, labeled with the fluorescent membrane probe rhodamine-18, bound 2 to 10 times more to genetically susceptible chicken embryo fibroblasts than to resistant cells, as measured by flow cytometry on a single-cell basis. This suggested that susceptible cells possess both specific and nonspecific receptors for virus adsorption, whereas resistant cells bind virus only by means of nonspecific sites. Polybrene at low concentration increased eightfold the binding of virus. Higher levels of Polybrene inhibited adsorption. Cell binding sites were saturable, and attachment of labeled virus could be partially blocked by preexposure of cells to unlabeled RSV. Virus surface glycoproteins played an important role in adsorption, since their removal with bromelain decreased binding of virus to susceptible cells. Maximal binding of RSV to both susceptible and resistant cells occurred within 10 min, although the level of binding was up to 10-fold higher for susceptible cells. Binding to all cell types showed a broad distribution. This implies that there are considerable differences in the number of virions bound per cell.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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