home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
HEALTH
/
MED9602.ZIP
/
M9620518.TXT
< prev
next >
Wrap
Text File
|
1996-02-26
|
3KB
|
48 lines
Document 0518
DOCN M9620518
TI Recombinant human growth-regulated oncogene-alpha induces T lymphocyte
chemotaxis. A process regulated via IL-8 receptors by IFN-gamma,
TNF-alpha, IL-4, IL-10, and IL-13.
DT 9602
AU Jinquan T; Frydenberg J; Mukaida N; Bonde J; Larsen CG; Matsushima K;
Thestrup-Pedersen K; Department of Dermatology, University of Aarhus,
Denmark.
SO J Immunol. 1995 Dec 1;155(11):5359-68. Unique Identifier : AIDSLINE
MED/96072814
AB The human cytokine growth-regulated oncogene (GRO)-alpha is a small
glycoprotein secreted by monocytes, endothelial cells, glycoprotein
secreted by monocytes, endothelial cells, fibroblasts, synovial cells,
and some tumor cells such as melanoma cells. It is structurally related
to IL-8 and can activate neutrophils, whereas it induces chemotaxis,
exocytosis, and a respiratory burst in neutrophils. To date, its
functions on T lymphocytes have not been well established. We report
here that recombinant human (rh)GRO-alpha is a potent chemoattractant
for freshly isolated T lymphocytes, but not for anti-CD3 mAb-activated T
lymphocytes. It attracts CD4+ and CD8+ T lymphocyte subsets to an equal
extent. The migrating T lymphocytes toward rhGRO-alpha are predominantly
CD45RO+ memory CD4+ and CD8+ subsets. The chemotactic migration of T
lymphocytes toward rhGRO-alpha is stimulated via the IL-8 receptors on
the cells. This process can be augmented by IFN-gamma and TNF-alpha, and
inhibited by IL-4, IL-10, and IL-13. In addition, we also document that
on T lymphocytes there exist IL-8 receptors that can be up-regulated by
IFN-gamma, TNF-alpha, and IL-2. Our results demonstrate that rhGRO-alpha
gene encodes for an inflammatory mediator that stimulates the
directional migration of T lymphocytes. It may thus be another important
mediator in the diseases in which T lymphocytes form the major
constituent of the cellular infiltration.
DE Antigens, CD/DRUG EFFECTS/IMMUNOLOGY/*METABOLISM Antigens,
CD3/IMMUNOLOGY Base Sequence Chemotactic
Factors/GENETICS/*PHARMACOLOGY Chemotaxis, Leukocyte/*DRUG EFFECTS
CD4-Positive T-Lymphocytes/DRUG EFFECTS CD8-Positive T-Lymphocytes/DRUG
EFFECTS Growth Substances/GENETICS/*PHARMACOLOGY Human
Immunophenotyping Interferon Type II/METABOLISM
Interleukins/*METABOLISM Molecular Sequence Data Receptors,
Interleukin/DRUG EFFECTS/IMMUNOLOGY/*METABOLISM Recombinant
Proteins/GENETICS/PHARMACOLOGY RNA, Messenger/ANALYSIS Support,
Non-U.S. Gov't T-Lymphocyte Subsets/*DRUG EFFECTS Tumor Necrosis
Factor/METABOLISM Up-Regulation (Physiology)/GENETICS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).