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Type: Journal article
Title: Effect of cytokine and antigen stimulation on peripheral blood lymphocyte syndecan-1 expression
Author: Manakil, J.
Seymour, G.
Bartold, P.
Citation: Molecular Oral Microbiology, 2007; 22(4):272-276
Publisher: Blackwell Munksgaard
Issue Date: 2007
ISSN: 0902-0055
Statement of
J. F. Manakil, G. J. Seymour, P. M. Bartold
Abstract: <h4>Introduction</h4>Cytokines are not only produced by activated lymphocytes but also interact with a number of cell-surface molecules on the same cells. Syndecan-1 is one such cell-surface molecule, which has the capacity to bind a variety of growth factors as well as cytokines. The aim of this study was to examine the effects of transforming growth factor beta (TGF-beta), interleukin-1 (IL-1), IL-2, IL-4, lipopolysaccharide (LPS) from Porphyromonas gingivalis and tetanus toxoid on syndecan-1 expression by B and T lymphocytes.<h4>Methods</h4>B and T lymphocytes were obtained from the peripheral blood of healthy donors. Following exposure to the above growth factors, cytokines and antigens, syndecan-1 expression was determined by flow cytometry.<h4>Results</h4>Subjects could be categorized as high or low expressors of syndecan-1. In the high-responder group TGF-beta1 alone resulted in a significant increase in syndecan-1 expression by both B and T cells. None of the other cytokines and antigens produced a significant response. When analysed in combination, TGF-beta1 in combination with IL-2, IL-4, P. gingivalis LPS and tetanus toxoid all produced significant increases in syndecan-1 expression by B cells. For T cells, combinations of TGF-beta1 with IL-2 and tetanus toxoid resulted in increased syndecan-1 expression.<h4>Conclusions</h4>Both B and T lymphocytes synthesize the cell-surface proteoglycan syndecan-1 and its expression can be modulated by TGF-beta1, either alone or in combination with IL-2, IL-4 and LPS from P. gingivalis and tetanus toxoid. While these may reflect general responses under inflammatory conditions their biological significance requires further investigation.
Keywords: Lymphocytes
Cells, Cultured
Recombinant Proteins
Antigens, Bacterial
Drug Combinations
Analysis of Variance
Regression Analysis
Lymphocyte Activation
Gene Expression Regulation
Middle Aged
Transforming Growth Factor beta1
DOI: 10.1111/j.1399-302X.2007.00356.x
Appears in Collections:Aurora harvest 6
Dentistry publications

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