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M9550233.TXT
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1995-03-04
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Document 0233
DOCN M9550233
TI Transfer of an anti-HIV-1 ribozyme gene into primary human lymphocytes.
DT 9505
AU Leavitt MC; Yu M; Yamada O; Kraus G; Looney D; Poeschla E; Wong-Staal F;
Department of Medicine, University of California, San Diego, La; Jolla
92093-0665.
SO Hum Gene Ther. 1994 Sep;5(9):1115-20. Unique Identifier : AIDSLINE
MED/95134789
AB We reported previously that human CD4+ T cell lines stably expressing a
hairpin ribozyme targeted to the human immunodeficiency virus type 1
(HIV-1) U5 leader sequence were resistant to challenge with diverse
HIV-1 viral clones and clinical isolates (Yamada et al., 1994). To
simulate more closely the in vivo infection process for investigations
of anti-HIV-1 ribozyme gene therapy, we developed a system to transfer
this ribozyme gene into freshly isolated human peripheral blood
lymphocytes (PBLs) using a murine retrovirus vector. Following
transduction and G418 selection, human PBLs from multiple donors
expressed the ribozyme and resisted challenge by HIV-1 viral clones and
clinical isolates, while control vector-transduced PBLs remained fully
permissive for HIV-1 infection. No inhibition of an HIV-2 clone lacking
the target was seen in ribozyme-expressing PBLs. Ribozyme expression had
no effect on viability or proliferation kinetics of the primary
lymphocytes. This study is the first demonstration in primary human T
cells of resistance to HIV-1 infection conferred by gene transfer. A
human clinical trial is in development to test further the safety and
efficacy of this ribozyme in PBLs of HIV-1-infected patients in vivo.
DE Base Sequence Cells, Cultured Comparative Study Drug
Resistance/GENETICS *Gene Transfer Genetic Vectors
Gentamicins/PHARMACOLOGY Human HIV-1/*GENETICS/PHYSIOLOGY
HIV-2/PHYSIOLOGY Immunity, Natural *Lymphocytes/VIROLOGY Molecular
Sequence Data Recombinant Fusion Proteins/BIOSYNTHESIS RNA Polymerase
III/METABOLISM RNA, Catalytic/BIOSYNTHESIS/*GENETICS Selection
(Genetics) *Virus Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).