当前位置： SCI文献检索 > VIROLOGY期刊下所有文献 > Different recombinant murine leukemia viruses use different cell surface receptors.

Different recombinant murine leukemia viruses use different cell surface receptors.

Abstract：

:Retroviruses can be grouped by viral interference measurements into classes which use common cell surface receptors. We previously tested a large number of isolates of mink cell focus-inducing (MCF) murine leukemia viruses (MuLVs), and reported that all of them share a distinct receptor on NIH/3T3 cells (A. Rein, Virology 120, 251, 1982). We now extend this generalization to several additional recombinant isolates, including two (SL3-2 and GPA-V2) which would not be considered MCFs on the basis of host-range data. We note the superiority of interference tests, based on positive, unambiguous data, over host-range tests for virus classification. We also show that in contrast to the MCFs, which are all derived from ecotropic MuLVs, a recombinant derived from wild mouse amphotropic MuLV (S. Rasheed et al., Int. J. Cancer 29, 345, 1982) uses a unique receptor on NIH/3T3 cells. This suggests that (a) mouse cells contain more than one type of endogenous env sequence; and (b) there is some specificity in the generation of recombinants, since ecotropic MuLVs appear to give rise only to MCFs, while amphotropic MuLV has generated a distinct type of recombinant. It also represents a second case (in addition to the MCFs) in which an env gene recombinant is more pathogenic than its exogenous parent. We also show that xenotropic MuLV does not interfere with MCFs in NZB mouse cells; thus, despite the close homology between MCF and xenotropic env sequences, the gp70 of xenotropic MuLV appears to have no detectable affinity for the MCF receptor.

journal_name

Virology

journal_title

Virology

authors

Rein A,Schultz A

doi

10.1016/0042-6822(84)90255-1

subject

Has Abstract

pub_date

1984-07-15 00:00:00

pages

144-52

issue

1

eissn

0042-6822

issn

1096-0341

journal_volume

136

pub_type

杂志文章

相关文献

VIROLOGY文献大全