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Document 0106
DOCN M9610106
TI Biological characterization and molecular cloning of murine C-type
retroviruses derived from the TSZ complex from mainland China.
DT 9601
AU Bundy LM; Ru M; Zheng BF; Cheng L; Pattengale PK; Portis JL; Fan H;
Department of Molecular Biology and Biochemistry, University of;
California at Irvine 92717, USA.
SO Virology. 1995 Oct 1;212(2):367-82. Unique Identifier : AIDSLINE
GENBANK/M17739
AB Characterization of the SRS murine retrovirus complex, derived from the
TSZ system of murine leukemia developed in China, was carried out. The
initial stock contained XC+, NB-tropic virus (and possibly other
viruses), and induced several neoplastic diseases in neonatally
inoculated NIH Swiss mice: erythroid leukemia, myeloid leukemia (acute
myeloblastic leukemia), and lymphoblastic lymphoma (both B- and
T-lymphoid). In addition, approximately 30% of inoculated animals
developed central nervous system disease--hindlimb paralysis or
semilateral paralysis. Rescue of virus from the spleen of an animal with
combined erythroid/myeloid leukemia, followed by endpoint dilution gave
two stocks: 19-6 (XC+, NB-tropic) and 19-7 (XC-, NB-tropic). Both stocks
induced erythroid and myeloid leukemia, and 19-6 induced CNS symptoms as
well. Southern blot analysis indicated that the predominant viruses from
the 19-6 and the 19-7 cultures were related, but different in the env
region. An infectious virus molecular clone of provirus from 19-6 cells
was obtained. The resulting cloned virus [SRS 19-6 murine leukemia virus
(MuLV)] induced four kinds of leukemia: erythroid, myeloid, B-lymphoma,
and T-lymphoma; in many cases, more than one tumor type was identified
in the same animal. Such a broad spectrum of leukemias induced by a
cloned MuLV is unusual. Flaccid hindlimb paralysis induced by SRS 19-6
MuLV could be attributed to meningeal B-lymphoma. Immunofluorescent
staining with a panel of env-specific monoclonal antibodies confirmed
that the 19-6 and 19-7 viral stocks contained different viruses, which
differed from previously characterized MuLVs. The viruses of the SRS
complex may provide interesting reagents for investigations of
MuLV-induced disease.
DE Animal Animals, Newborn Base Sequence China Cloning, Molecular DNA,
Viral/GENETICS Genes, env/GENETICS Leukemia Viruses,
Murine/*GENETICS/PATHOGENICITY Leukemia,
Experimental/PATHOLOGY/*VIROLOGY Lymphoma,
Lymphoblastic/PATHOLOGY/VIROLOGY Mice Molecular Sequence Data
Paralysis/VIROLOGY Proviruses/GENETICS Restriction Mapping
Retroviridae Infections/PATHOLOGY/*VIROLOGY Sequence Analysis, DNA
Spleen/VIROLOGY Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S.
Tumor Virus Infections/PATHOLOGY/*VIROLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).