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1996-03-09
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Document 0328
DOCN M9650328
TI Autocrine interferon-beta synthesis for gene therapy of HIV infection:
increased resistance to HIV-1 in lymphocytes from healthy and
HIV-infected individuals.
DT 9605
AU Vieillard V; Lauret E; Maguer V; Jacomet C; Rozenbaum W; Gazzolo L; De
Maeyer E; URA 1343 Centre National de la Recherche Scientifique,
Institut; Curie, University of Paris 11, Orsay, France.
SO AIDS. 1995 Nov;9(11):1221-8. Unique Identifier : AIDSLINE MED/96126175
AB OBJECTIVE: To explore the possibility of gene therapy of HIV infection
based on the multiple antiretroviral activities of interferon
(IFN)-beta. DESIGN: We introduced into HIV target cells an IFN-beta gene
placed under an expression control ensuring a low and constitutive
expression, sufficient to confer a permanent antiviral state without
impeding normal cell function. METHODS: We transformed, with an efficacy
ranging from 20-55%, peripheral blood lymphocytes (PBL) derived from
healthy, seronegative donors, and from asymptomatic HIV-infected
individuals by the HMB-KbHuIFN beta retroviral vector carrying the human
IFN-beta coding sequence driven by a fragment of the murine H-2Kb gene
promoter. RESULTS: The replication rate of the IFN-beta-expressing cells
was no different from that of untransformed controls during the 21-day
period of in vitro observation. When IFN-beta-transformed, purified CD4+
lymphocytes from healthy donors were HIV-1LAI-infected, virus
replication was inhibited and most of the cells survived, in contrast to
untransformed CD4+ cells which were all destroyed 12 days after
infection. Protection of CD4+ cells from the same donors was also
observed in suspensions of IFN-beta-transformed total PBL that were
infected with HIV-1LAI. In IFN-beta-transformed PBL from four
HIV-infected donors, endogenous HIV replication was decreased and 28-69%
of the CD4+ cells survived at the end of the 21 days in culture. In the
untransformed control PBL suspensions, all CD4+ cells were destroyed. In
long-term experiments, HIV-infected, IFN-beta-transformed cell
populations of the lymphocytic CEM and the promonocytic U937 line were
kept in culture for 60 days, during which time they remained resistant
to HIV infection. CONCLUSION: These results indicate that further
exploration of autocrine IFN-beta production for somatic cell gene
therapy of HIV infection is warranted.
DE Antiviral Agents/*THERAPEUTIC USE Base Sequence Cell Line, Transformed
Cells, Cultured Gene Therapy Gene Transfer Human HIV
Infections/METABOLISM/PATHOLOGY/*THERAPY HIV-1/*DRUG EFFECTS/ISOLATION
& PURIF Interferon-beta/BIOSYNTHESIS/GENETICS/*THERAPEUTIC USE
Lymphocytes/METABOLISM/*VIROLOGY Molecular Sequence Data Support,
Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).