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M9490655.TXT
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1994-09-24
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Document 0655
DOCN M9490655
TI Virus production and spontaneous cell proliferation in HTLV-I-infected
lymphocytes.
DT 9411
AU Mann DL; Martin P; Hamlin-Green G; Nalewaik R; Blattner W; Laboratory of
Viral Carcinogenesis, Program Resources,; Inc./DynCorp., National Cancer
Institute Frederick Cancer; Research and Development Center, Maryland
21702-1201.
SO Clin Immunol Immunopathol. 1994 Sep;72(3):312-20. Unique Identifier :
AIDSLINE MED/94340804
AB Cultured peripheral blood lymphocytes (PBL) from HTLV-I-infected
individuals proliferate in the absence of added mitogens and/or
cytokines. In an attempt to answer questions regarding the activating
signals for cells and virus, antibodies that react with cell surface
components that are known to regulate cell activation and antibodies
reacting with viral proteins were added to cultures of PBL from
HTLV-I-infected, disease-free individuals. Spontaneous proliferation and
virus production increased in the presence of antibodies reacting with
CD3 and alpha/beta T cell receptors (TCR) while antibodies to HLA class
II and viral proteins had no effect. Addition of HLA class I antibodies
shut down virus production and cell proliferation. These observations
indicate that both virus and cell activation may occur through the
alpha/beta TCR on the infected cell. Cyclosporin A, however, markedly
decreased cell proliferation but had only a modest suppressive effect on
virus production. Thus, the uncoupling of cell proliferation from virus
production by cyclosporin A suggests the possibility that the signal
transduction pathways for these two events are different.
DE Antibodies, Monoclonal Antigens, Surface/IMMUNOLOGY Base Sequence
Cells, Cultured Cyclosporine/PHARMACOLOGY DNA, Viral/GENETICS Human
HTLV-I/DRUG EFFECTS/IMMUNOLOGY/*PHYSIOLOGY HTLV-I Antigens/IMMUNOLOGY
HTLV-I Infections/*IMMUNOLOGY/*MICROBIOLOGY Lymphocyte
Transformation/DRUG EFFECTS/*IMMUNOLOGY Molecular Sequence Data
Polymerase Chain Reaction RNA, Viral/BIOSYNTHESIS/GENETICS Support,
U.S. Gov't, P.H.S. T-Lymphocyte
Subsets/CYTOLOGY/*IMMUNOLOGY/*MICROBIOLOGY Virus Replication/DRUG
EFFECTS/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).