[Inhibition of T cell proliferation and T cell-induced osteoclastogenesis by peroxisome proliferator activated receptor-γ ligand]. 2011

Xiao-ping Lin, and Hong-li Liu, and Li-li DU, and Kawai Toshihisa, and Chun-hui Zhang
Department of Stomatology, Shengjing Hospital of China Medical University. Shenyang, Liaoning Province, China. Xiaoping_ba@yahoo.com

OBJECTIVE To examine the effect of peroxisome proliferator activated receptor-γ(PPARγ) ligand, 15d-PGJ2 on inhibition of T cell proliferation and T cell-mediated osteoclastogenesis, and clarify the possible mechanism. METHODS T cells from A.actinomycetetemcomitans immunized BALB/c mice were isolated from cervical lymph nodes and T lymphocytes enriched in vitro. At 3-day after 15d-PGJ2 (0,1×10(-8),1×10(-7),1×10(-6),1×10(-5)mol/L) induction,T cell proliferation analysis was measured by cintilography, the concentration of RANKL, TNF-α and IL-10 were measured in culture supernatants by ELISA, and osteoclastogenesis of co-culture with RAW 264.7 cell and T lymphocyte supernatants that enriched in vitro by tartrate resistant acid phosphatase (TRAP) staining. SASS 11.0 software package was used for statistical analysis. RESULTS By 1×10-5mol/L 15d-PGJ2 induction, T cell 3H incorporation remarkably decreased, the expression of RANKL and TNF-α in the supernatant markedly decreased, significantly different compared with the control group(P<0.05), but IL-10 was not significantly different, and the numbers of TRAP positive cells decreased, significantly different compared with the control group (P<0.05),which was dose-dependent. CONCLUSIONS PPARγ ligand 15d-PGJ2 can inhibit 3H incorporation, down-regulate cytokine release, decrease T cell-induced osteoclastogenesis. The data suggest that PPARγ ligand plays an important role in T cell-induced bone resorption.

UI MeSH Term Description Entries
D008024 Ligands A molecule that binds to another molecule, used especially to refer to a small molecule that binds specifically to a larger molecule, e.g., an antigen binding to an antibody, a hormone or neurotransmitter binding to a receptor, or a substrate or allosteric effector binding to an enzyme. Ligands are also molecules that donate or accept a pair of electrons to form a coordinate covalent bond with the central metal atom of a coordination complex. (From Dorland, 27th ed) Ligand
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013601 T-Lymphocytes Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen. T Cell,T Lymphocyte,T-Cells,Thymus-Dependent Lymphocytes,Cell, T,Cells, T,Lymphocyte, T,Lymphocyte, Thymus-Dependent,Lymphocytes, T,Lymphocytes, Thymus-Dependent,T Cells,T Lymphocytes,T-Cell,T-Lymphocyte,Thymus Dependent Lymphocytes,Thymus-Dependent Lymphocyte
D014409 Tumor Necrosis Factor-alpha Serum glycoprotein produced by activated MACROPHAGES and other mammalian MONONUCLEAR LEUKOCYTES. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to TNF-beta (LYMPHOTOXIN), but they share TNF RECEPTORS. Cachectin,TNF-alpha,Tumor Necrosis Factor Ligand Superfamily Member 2,Cachectin-Tumor Necrosis Factor,TNF Superfamily, Member 2,TNFalpha,Tumor Necrosis Factor,Cachectin Tumor Necrosis Factor,Tumor Necrosis Factor alpha
D015230 Prostaglandin D2 The principal cyclooxygenase metabolite of arachidonic acid. It is released upon activation of mast cells and is also synthesized by alveolar macrophages. Among its many biological actions, the most important are its bronchoconstrictor, platelet-activating-factor-inhibitory, and cytotoxic effects. 11-Dehydroprostaglandin F2alpha,PGD2,11-Dehydroprostaglandin F2 alpha,11 Dehydroprostaglandin F2 alpha,11 Dehydroprostaglandin F2alpha,D2, Prostaglandin,F2 alpha, 11-Dehydroprostaglandin,F2alpha, 11-Dehydroprostaglandin,alpha, 11-Dehydroprostaglandin F2
D047495 PPAR gamma A nuclear transcription factor. Heterodimerization with RETINOID X RECEPTOR ALPHA is important in regulation of GLUCOSE metabolism and CELL GROWTH PROCESSES. It is a target of THIAZOLIDINEDIONES for control of DIABETES MELLITUS. PPARgamma,PPARgamma2,PPARgamma3,Peroxisome Proliferator-Activated Receptor gamma,Thiazolidinedione Receptor,mPPARgamma1,mPPARgamma2,Peroxisome Proliferator Activated Receptor gamma,Receptor, Thiazolidinedione
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D053245 RANK Ligand A transmembrane protein belonging to the tumor necrosis factor superfamily that specifically binds RECEPTOR ACTIVATOR OF NUCLEAR FACTOR-KAPPA B and OSTEOPROTEGERIN. It plays an important role in regulating OSTEOCLAST differentiation and activation. Tumor Necrosis Factor Ligand Superfamily Member 11,CD254 Antigen,OPGL Protein,Osteoclast Differentiation Factor,Osteoprotegerin Ligand,RANKL Protein,Receptor Activator of Nuclear Factor-kappa B Ligand,Receptor Activator of Nuclear Factor-kappaB Ligand,TNF Superfamily, Member 11,TRANCE Protein,Tumor Necrosis Factor-Related Activation-Induced Cytokine,Antigen, CD254,Differentiation Factor, Osteoclast,Receptor Activator of Nuclear Factor kappa B Ligand,Receptor Activator of Nuclear Factor kappaB Ligand,Tumor Necrosis Factor Related Activation Induced Cytokine

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