Genetic Analysis of Myeloproliferative Leukemia Virus, a Novel Acute Leukemogenic Replication-defective Retrovirus

Overview

Journal J Virol

Publisher American Society for Microbiology

Date 1987 Feb 1

PMID 3027384

Citations 4

Authors

J F Penciolelli

F Wendling

J Robert-Lezenes

J P Barque

P Tambourin

S Gisselbrecht

Affiliations

Soon will be listed here.

Abstract

The myeloproliferative leukemia virus (MPLV) is a new acute leukemogenic, nonsarcomatogenic retroviral complex that is generated during the in vivo passage of a molecularly cloned Friend ecotropic helper virus. Examination of viral RNA expression in MPLV-producing cells revealed the presence of two distinct molecular species that hybridized with a long terminal repeat or an ecotropic env-specific probe but not with a xenotropic mink cell focus-forming virus env-specific probe derived from a spleen focus-forming virus: an 8.2-kilobase species corresponding to a full-length Friend murine leukemia virus (F-MuLV) and a deleted species with a genomic size of 7.4 kilobases. This deleted virus was biologically cloned by limiting dilutions and single cell cloning in Mus dunni fibroblasts. Three nonproducer clones with normal morphologies and containing one single integrated copy of the deleted virus were superinfected with F-MuLV, Moloney murine leukemia virus, Gross murine leukemia virus, mink cell focus-forming virus (HIX), or the amphotropic 1504 murine leukemia virus. All pseudotypes caused macroscopic and microscopic abnormalities in mice that were similar to those seen in the parental stock. A comparison of the physical maps of F-MuLV and MPLV, which was deduced from the restriction enzyme digests of unintegrated proviral DNAs, indicated that the MPLV-defective genome (i) is probably derived from F-MuLV, (ii) has conserved the F-MuLV gag and pol regions, and (iii) is deleted and rearranged in the env region in a manner that is clearly distinct from that of Friend or Rauscher spleen focus-forming viruses.

Citing Articles

Introduction of a cis-acting mutation in the capsid-coding gene of moloney murine leukemia virus extends its leukemogenic properties.

Audit M, Dejardin J, Hohl B, Sidobre C, Hope T, Mougel M J Virol. 1999; 73(12):10472-9.

PMID: 10559365 PMC: 113102. DOI: 10.1128/JVI.73.12.10472-10479.1999.

Characterization of mpl cytoplasmic domain sequences required for myeloproliferative leukemia virus pathogenicity.

Benit L, Courtois G, Charon M, Varlet P, Dusanter-Fourt I, Gisselbrecht S J Virol. 1994; 68(8):5270-4.

PMID: 8035524 PMC: 236472. DOI: 10.1128/JVI.68.8.5270-5274.1994.

Constitutive activation of a variant of the env-mpl oncogene product by disulfide-linked homodimerization.

Courtois G, Benit L, Mikaeloff Y, Pauchard M, Charon M, Varlet P J Virol. 1995; 69(5):2794-800.

PMID: 7707501 PMC: 188973. DOI: 10.1128/JVI.69.5.2794-2800.1995.

The human homolog of the myeloproliferative virus maps to chromosome band 1p34.

Le Coniat M, Souyri M, Vigon I, Wendling F, Tambourin P, Berger R Hum Genet. 1989; 83(2):194-6.

PMID: 2550356 DOI: 10.1007/BF00286717.

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