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M9490093.TXT
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1994-09-03
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Document 0093
DOCN M9490093
TI Retrovirus-induced immunosuppression via blocking of dendritic cell
migration and down-regulation of adhesion molecules.
DT 9411
AU Gabrilovich DI; Woods GM; Patterson S; Harvey JJ; Knight SC; Antigen
Presentation Research Group, Clinical Research Centre,; Harrow, U.K.
SO Immunology. 1994 May;82(1):82-7. Unique Identifier : AIDSLINE
MED/94321005
AB Dendritic cells (DC) within tissues may acquire and process antigens,
carry them into lymph nodes and cluster and activate T cells. The
ability of DC to acquire antigen and to migrate to lymph nodes was
estimated during murine retroviral infection caused by Rauscher
leukaemia virus (RLV). A novel mechanism of inducing immunodeficiency
has now been identified. In mice infected with RLV, DC failed to migrate
into lymph nodes following exposure of the skin to the contact
sensitizer, fluorescein isothiocyanate. RLV infection of a proportion of
DC both in skin and lymph nodes, shown by semi-quantitative polymerase
chain reaction (PCR) and down-regulation of expression of adhesion
molecules (CD54 and CD44) on the surface of Langerhans' cells, may
contribute to the described phenomenon. A failure of DC migration could
be an important immunosuppressive mechanism of RLV infection in mice and
we speculate on a similar role for DC in human immunodeficiency virus-1
(HIV-1) infection in humans.
DE Animal Base Sequence Cell Adhesion Molecules/ANALYSIS Cell
Movement/IMMUNOLOGY Dendritic Cells/*IMMUNOLOGY Down-Regulation
(Physiology)/IMMUNOLOGY Female Immune Tolerance/*IMMUNOLOGY
Langerhans Cells/IMMUNOLOGY Leukemia, Experimental/*IMMUNOLOGY Lymph
Nodes/IMMUNOLOGY Mice Mice, Inbred BALB C Mice, Inbred C57BL
Molecular Sequence Data Oligonucleotide Probes/CHEMISTRY *Rauscher
Virus Retroviridae Infections/*IMMUNOLOGY Support, Non-U.S. Gov't
Tumor Virus Infections/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).