Journal of Experimental Medicine, Vol 158, 1693-1702, Copyright © 1983 by Rockefeller University Press
Susceptibility to Friend helper virus leukemias in CXB recombinant inbred mice
JE Silver and TN Fredrickson
The seven CXB recombinant inbred strains were tested for susceptibility to
Friend helper virus (F-MuLV) hematopoietic neoplasms. BALB/c and CXB- H
mice develop erythroblastosis after neonatal inoculation with F-MuLV, while
C57BL/6 and the six other RI strains develop lymphoma and myelogenous
leukemia. This strain distribution pattern is different from that for H-2,
Gpd-1 (linked to Fv-1), Fv-2, Rfv-3, and Cv (linked to Rmcf) but the same
as that for Bv, the endogenous ecotropic virus of C57BL/6. However,
analysis of crosses segregating Bv show that resistance to F-MuLV
erythroblastosis is not linked to Bv. Disease-free survival is shortest for
BALB/c mice, intermediate for CXB-H and CXB-J, and longest for C57BL/6 and
the other RI strains. We conclude: (a) the major C57BL/6 gene for
resistance to F-MuLV erythroblastosis is different from previously
identified Friend virus restriction loci; (b) latency for F-MuLV leukemias
is controlled by more than one gene; and (c) latency and susceptibility to
F-MuLV erythroblastosis are not inherited concordantly in the CXB-RI
strains.