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M9640643.TXT
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1996-03-04
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Document 0643
DOCN M9640643
TI An array of murine leukemia virus-related elements is transmitted and
expressed in a primate recipient of retroviral gene transfer.
DT 9604
AU Purcell DF; Broscius CM; Vanin EF; Buckler CE; Nienhuis AW; Martin MA;
Laboratory of Molecular Microbiology, National Institute of; Allergy and
Infectious Diseases, National Institutes of Health,; Bethesda, MD 20892,
USA.
SO J Virol. 1996 Feb;70(2):887-97. Unique Identifier : AIDSLINE
GENBANK/K01384
AB Direct RNA-PCR analyses of T-cell lymphomas that developed in rhesus
macaques during a gene transfer experiment revealed the presence of
several different recombinant murine leukemia viruses (MuLV). Most
prominent was the expected MuLV recombinant, designated MoLTRAmphoenv in
which the amphotropic env of the helper packaging virus was joined to
the long terminal repeat (LTR) of the Moloney MuLV-derived vector. This
retrovirus does not exist in nature. An additional copy of the core
enhancer acquired from the vector LTR may have augmented the replicative
properties of MoLTRAmphoenv MuLV in several different rhesus cell types
compared with the prototype amphotropic MuLV4070A. Unexpectedly, at
least two types of mink cell focus-forming MuLV elements, arising from
endogenous retroviral sequences expressed in the murine packaging cell
line, were also transmitted and highly expressed in one of the macaques.
Furthermore, murine virus-like VL-30 sequences were detected in the
rhesus lymphomas, but these were not transcribed into RNA. The
unanticipated presence of an array of MuLV-related structures in a
primate gene transfer recipient demands ever-vigilant scrutiny for the
existence of transmissible retroviral elements and replication-competent
viruses possessing altered tropic or growth properties in packaging
cells producing retroviral vectors.
DE Animal Base Sequence Cells, Cultured Cloning, Molecular DNA, Viral
Gene Expression Regulation, Viral Gene Transfer/*ADVERSE EFFECTS
Genes, env *Genetic Vectors Leukemia Viruses,
Murine/*GENETICS/ISOLATION & PURIF/ PATHOGENICITY Lymphoma/*VIROLOGY
Macaca mulatta Mice Molecular Sequence Data Promoter Regions
(Genetics) Repetitive Sequences, Nucleic Acid Retroviridae
Infections/*VIROLOGY Support, Non-U.S. Gov't Transcription, Genetic
Tumor Virus Infections/*VIROLOGY Viral Envelope Proteins/GENETICS
Virus Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).