home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
HEALTH
/
MED9602.ZIP
/
M9620967.TXT
< prev
next >
Wrap
Text File
|
1996-02-26
|
3KB
|
50 lines
Document 0967
DOCN M9620967
TI Genetic modification of human peripheral blood lymphocytes with a
transdominant negative form of Rev: safety and toxicity.
DT 9602
AU Fox BA; Woffendin C; Yang ZY; San H; Ranga U; Gordon D; Osterholzer J;
Nabel GJ; Howard Hughes Medical Institute, University of Michigan
Medical; Center, Ann Arbor 48109-0650, USA.
SO Hum Gene Ther. 1995 Aug;6(8):997-1004. Unique Identifier : AIDSLINE
MED/96022631
AB A transdominant mutant form of the rev gene, M10, confers resistance to
infection by the human immunodeficiency virus (HIV) in vitro and is
currently under investigation as a potential intervention in acquired
immunodeficiency syndrome (AIDS). In this report, we examine three
issues relevant to the safety of autologous transfer of human T cells
genetically modified with Rev M10. First, the potential for malignant
transformation was assessed in vitro using interleukin-2 (IL-2)
dependence and fibroblast transformation assays, and tumorigenicity was
evaluated in severe combined immunodeficient (SCID) mice. Possible
toxicity was evaluated by pathologic analysis following adoptive
transfer of genetically modified human T cells into SCID mice. Second,
methods were developed that permit T cell activation required for gene
transfer but do not allow replication of endogenous HIV. Third, T cell
function was evaluated in peripheral blood lymphocytes (PBL) of
HIV-seropositive donors transduced with Rev M10 and compared to a
negative control mutant, delta Rev M10. By all criteria, no oncogenicity
or toxicity was observed. Human T cells transduced with these vectors
did not grow in the absence of IL-2 in vitro, and no tumors were
observed following transplantation of genetically modified human cells
into recipient SCID mice. Histopathological analysis of heart, lung,
liver, spleen, and kidney of animals 1-21 weeks following adoptive
transfer of gene-modified human T cells revealed no significant
abnormalities. Additionally, no differences were observed in the pattern
of cytokine secretion in enriched human PBL expressing Rev M10 compared
to delta Rev M10.2+
DE Animal Antiviral Agents/PHARMACOLOGY Base Sequence Cell Line Cell
Transformation, Neoplastic Cytokines/BIOSYNTHESIS Female Fibroblasts
*Gene Transfer Genes, rev/*GENETICS Genes, Dominant *Genetic Vectors
Gold/TOXICITY Human HIV-1/*GENETICS/PHYSIOLOGY Immunotherapy,
Adoptive Interleukin-2/PHYSIOLOGY Lymphocyte Transformation Mice
Mice, Inbred BALB C Mice, SCID Microspheres Molecular Sequence Data
Retroviridae/GENETICS Reverse Transcriptase Inhibitors/PHARMACOLOGY
Support, U.S. Gov't, P.H.S.
T-Lymphocytes/*IMMUNOLOGY/METABOLISM/TRANSPLANTATION Virus
Replication/DRUG EFFECTS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).