Induction of a regulatory T cell type 1 response reduces the development of atherosclerosis in apolipoprotein E-knockout mice

T helper type 1 (Th1) response plays a permissive role in atherosclerosis. We hypothesized that adoptive transfer of a novel subtype of T lymphocytes called regulatory T cells type 1 (Tr1) would inhibit Th1 responses by inducing a bystander immune suppression and therefore limit the development of a...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 2003-09, Vol.108 (10), p.1232-1237
Main Authors: MALLAT, Ziad, GOJOVA, Andrea, BRUN, Valérie, ESPOSITO, Bruno, FOURNIER, Nathalie, COTTREZ, Francoise, TEDGUI, Alain, GROUX, Hervé
Format: Article
Language:English
Subjects:
Adoptive Transfer - methods
Animals
Apolipoproteins E - deficiency
Apolipoproteins E - genetics
Arteriosclerosis - immunology
Arteriosclerosis - pathology
Arteriosclerosis - prevention & control
Atherosclerosis (general aspects, experimental research)
Biological and medical sciences
Blood and lymphatic vessels
Bystander Effect - immunology
Cardiology. Vascular system
Cells, Cultured
Cholesterol - blood
Clone Cells
Cytokines - metabolism
Female
Freund's Adjuvant - immunology
Immunoglobulin E - blood
Immunoglobulin G - blood
Immunosuppression - methods
Interferon-gamma - metabolism
Interleukin-10 - metabolism
Lymph Nodes - cytology
Lymph Nodes - immunology
Medical sciences
Mice
Mice, Inbred C57BL
Mice, Knockout
Ovalbumin - immunology
Spleen - cytology
Spleen - immunology
T-Lymphocytes - cytology
T-Lymphocytes - immunology
T-Lymphocytes - physiology
T-Lymphocytes - transplantation
Th1 Cells - immunology
Th1 Cells - physiology
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Summary:T helper type 1 (Th1) response plays a permissive role in atherosclerosis. We hypothesized that adoptive transfer of a novel subtype of T lymphocytes called regulatory T cells type 1 (Tr1) would inhibit Th1 responses by inducing a bystander immune suppression and therefore limit the development of atherosclerosis. Clones of ovalbumin (OVA)-specific Tr1 cells expanded in vitro were administered intraperitoneally (106 cells per mouse) with their cognate antigen (50 microg of OVA subcutaneously in complete Freund's adjuvant [CFA]) to female apolipoprotein E-knockout mice. A group of mice received only (OVA/CFA) immunization without Tr1 cells. Two other control groups received no immunization and were injected with either Tr1 cells or saline. After 9 weeks of treatment, mice injected with (OVA/CFA)+OVA-specific Tr1 cells showed a significant decrease in Th1 responses, as revealed by a decrease in OVA-specific IgG2a serum levels (P
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.0000089083.61317.A1