Abstract:
:Exposure to pathogens induces dendritic cells to release inflammatory cytokines and chemokines. The inflammatory response is controlled by endogenous agents such as anti-inflammatory cytokines, glucocorticoids, anti-inflammatory neuropeptides, and lipid mediators. This study is the first report on the inhibition by prostaglandin E2 (PGE2) of TNF release from bone marrow-derived dendritic cells stimulated with lipopolysaccharide (LPS), a TLR4 ligand, or peptidoglycan, a TLR2 ligand. The inhibition of TNF occurs at both mRNA and protein level. The inhibitory effect of PGE2 is mediated by the EP2 and EP4 receptors, and involves both PKA signaling and mediation by DC-derived IL-10. Intraperitoneal administration of PGE2 together with LPS results in a reduction in serum TNF and intracellular TNF in peritoneal exudate cells, compared to LPS alone. In addition, administration of PGE2 in vivo reduces the numbers of CD11c+ DCc that accumulate in the peritoneal cavity in response to LPS. The various implications of the PGE2-induced reduction in TNF are discussed.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Vassiliou E,Jing H,Ganea Ddoi
10.1016/s0008-8749(03)00158-8subject
Has Abstractpub_date
2003-06-01 00:00:00pages
120-32issue
2eissn
0008-8749issn
1090-2163pii
S0008874903001588journal_volume
223pub_type
杂志文章abstract::The proliferative responses of natural killer (NK) cells to 12-O-tetradecanoylphorbol-13-acetate (TPA), which directly activates protein kinase c(PKC), and to the Ca2+ ionophores A23817 and ionomycin, known to enhance the intracellular calcium, have been investigated. Highly purified large granular lymphocytes (LGL) w...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(88)90007-x
更新日期:1988-04-15 00:00:00
abstract::Purine nucleoside phosphorylase (PNP) is a purine salvage pathway enzyme which we have found to be 8-10 times more active (per cell) in human peripheral blood null lymphocytes than in T lymphocytes. To test the hypothesis that null cells are, in part, pre-T lymphocytes we have defined an in vitro system for null cell ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90288-5
更新日期:1983-06-01 00:00:00
abstract::The functional specificity of three types of macrophage chemotactic factors ( MCFs ), -a, -b, and -c, from purified protein derivative of tuberculin (PPD)-induced delayed hypersensitivity reaction (DHR) skin sites on guinea pigs, was analyzed using macrophage cell line cells, M1, established from myeloid leukemia cell...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(84)90354-x
更新日期:1984-06-01 00:00:00
abstract::We have analyzed the effect of cyclosporin-A (CsA) on the proliferative and cytotoxic responses induced by mixed-lymphocyte cultures (MLC-s) on low and high density T lymphocytes. Allogeneic stimulation had a different impact on the two subsets. Proliferative and cytotoxic responses were inversely correlated; i.e., hi...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90100-0
更新日期:1986-12-01 00:00:00
abstract::TNF-alpha plays an important role in the development of secondary lymphoid tissues. Earlier studies showed that fibroblastic reticular cells express TNF-alpha receptor, suggesting that TNF-alpha may affect the development of FRCs. To test this, we analyzed the development and function of FRCs in wild-type or TNF-alpha...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2015.01.006
更新日期:2015-02-01 00:00:00
abstract::Conalbumin (CA)-specific type 2 helper T cell (Th2) clone, D10G4.1 (D10) produces IL4 when stimulated with varying doses of TNP-CA in the presence of mitomycin C-treated C3H spleen cells or purified B cells as antigen-presenting cells (APC). The production of IL4 was assessed by bioassay and by expression of IL4 mRNA....
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(92)90333-k
更新日期:1992-12-01 00:00:00
abstract::We have performed immunoperoxidase staining on cryostat tissue sections and immunofluorescence analysis on cell suspensions to identify cells expressing the alpha/beta T cell antigen receptor during ontogeny and adult life in chickens. We used the mouse monoclonal antibody, TCR2, which was previously shown to recogniz...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90079-7
更新日期:1990-01-01 00:00:00
abstract::The utility of multiple antigenic peptides (MAPs) for the induction of antibody and cellular immune responses in animal models has been demonstrated for a variety of peptide epitopes involved in human disease. However, little is known about immune responses to MAPs constructed with antigenic tumor epitopes, nor has pe...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1996.0310
更新日期:1996-12-15 00:00:00
abstract::The engulfment of apoptotic cells by monocytes and unprimed macrophages results in M2 polarization. In the current study, we investigated whether apoptotic cells influence the phenotypic and functional characteristics of GM-CSF-differentiated human macrophages (GM-Mφ). Our results demonstrate that GM-Mφ preincubated w...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2018.06.002
更新日期:2018-09-01 00:00:00
abstract::The murine B-cell differentiation antigen Lyb-2 has been shown to be involved in B-lymphocyte activation and has been postulated by some to be related to a receptor for B-cell stimulatory factor I (BSF-1) (H. Yakura et al., J. Immunol. 137, 1475, 1986). Here we have demonstrated that monoclonal antibody (mAB) to Lyb-2...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(88)90302-4
更新日期:1988-04-01 00:00:00
abstract::Previous studies have validated the capacity of classical (HLA-A,B,C) and nonclassical (HLA-G) MHC class I antigens expressed by target cells to influence natural killer (NK) cell-mediated cytolysis. Generally, elevated expression of these HLA class I molecules is correlated with enhanced resistance to lysis by NK cel...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1996.0020
更新日期:1996-01-10 00:00:00
abstract::Delta opioid receptors (DORs) are known to modulate multiple T-cell responses. However, little is known about the expression of these receptors. These studies evaluated the expression of DOR mRNA and protein after a single in vivo exposure to staphylococcal enterotoxin B (SEB). SEB (20 microg, ip) significantly enhanc...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.2000.1717
更新日期:2000-11-01 00:00:00
abstract::The role of macrophages (M phi) in the in vitro primary antibody response of murine lymphocytes to sheep erythrocytes was investigated. Peritoneal M phi were activated to express Ia antigens either in vitro or in vivo. Nonactivated Ia- M phi were also examined. We observed that only Ia- M phi but also Ia+ M phi failed...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(85)90316-8
更新日期:1985-10-15 00:00:00
abstract::Bcl-2 proto-oncogene is expressed in normal lymphoid tissues and its role has been suggested to involve the selection of B and T cells. Here we report three-color flow cytometric studies on the expression of bcl-2 protein in the thymus and periphery. Bcl-2 was expressed in the majority of T and B cells and down-regula...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1127
更新日期:1994-05-01 00:00:00
abstract::Acting through CD14 and TLR4/MD-2, lipopolysaccharide (LPS) triggers strong pro-inflammatory activation of macrophages, which, if not appropriately controlled, may lead to lethal septic shock. Therefore, numerous mechanisms of negative regulation of responses to LPS exist, but whether they include down-regulation of L...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2016.11.008
更新日期:2017-02-01 00:00:00
abstract::Dexamethasone is a potent anti-inflammatory and immunosupressive agent that has complex, yet incompletely defined, effects on the immune response. Here, we explored the effect of dexamethasone on the expression of TCR zeta chain and TCR/CD3-induced early signaling events in human T lymphocytes. Immunoblotting studies ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.2001.1761
更新日期:2001-02-25 00:00:00
abstract::The lineage of lymphokine-activated killer (LAK) cells is poorly understood. To examine the relationship between LAK and natural killer (NK) cells we utilized two congenitally immunodeficient mice, namely severe combined immunodeficient (scid) and athymic (nude) mice that lack T cells but have normal NK cells. LAK act...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(89)90190-1
更新日期:1989-04-15 00:00:00
abstract::The CD2 (T11) molecule belongs to a family of cell-surface glycoproteins that function as adhesion molecules in the immune system. Human CD2 is found exclusively on cells of the T lineage: peripheral T lymphocytes, NK cells, and thymocytes. CD2 binds specifically to the surface glycoprotein LFA-3. CD2/LFA-3 adhesion i...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1133
更新日期:1993-06-01 00:00:00
abstract::In an attempt to better relate specific membrane characteristics of human adult and cord blood lymphocytes to specific functional activities, the phenotypic differences that exist in these two populations have been examined. Cord blood cells have considerably more spontaneous suppressor cell activity than adult cells....
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90214-9
更新日期:1983-10-01 00:00:00
abstract::The effect of the addition of dialyzable leukocyte extract (DLE)(transfer factor) to tuberculostatic drugs in the treatment of superinfected fistulating tuberculosis of bones and joints was evaluated in a controlled study. Eleven patients whose disease had persisted for a mean of 20 +/- 4.8 years and had proved to be ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(84)90091-1
更新日期:1984-03-01 00:00:00
abstract::Medicinal plants are considered immunomodulatory as they display various biological activities. There is no report addressing the anti-inflammatory effects of Daphne gnidium. In this study, we investigated the effects of D. gnidium ethyl acetate (EA) leaf extract on mice immune cell function in vitro. Production of pr...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2010.12.002
更新日期:2011-01-01 00:00:00
abstract::IgA nephropathy (IgAN) is a tonsil-related disease. We previously showed that oligodeoxynucleotides with CpG (CpG-ODN) and B-cell activation factor (BAFF) are involved in hyperproduction of IgA from tonsillar mononuclear cells of patients with IgAN (IgAN-TMCs). In this study, we focused on a proliferation-inducing lig...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2019.103925
更新日期:2019-07-01 00:00:00
abstract::The aim of this study was to analyze in vivo the L3T4+ T-cell-subset-independent reactivity of Lyt2+ T cells toward transplantation alloantigens. To this end, we depleted normal mice of L3T4+ T cells by injection of monoclonal antibodies to the L3T4 antigen. This procedure not only led phenotypically to a disappearanc...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(88)90059-7
更新日期:1988-01-01 00:00:00
abstract::We have studied the effects of prostaglandin E2 (PGE2) and cholera toxin, two modulators of adenylyl cyclase, and 8-bromo cAMP (8-BrcAMP) on various parameters of lymphocyte activation using the human T cell line Jurkat. Our results show that PGE2 and cholera toxin inhibit, in a dose-related manner, the phytohemagglut...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90035-p
更新日期:1990-07-01 00:00:00
abstract::Peripheral blood mononuclear cells (PBMCs) from cattle vaccinated with Bacillus Calmette-Guerin (BCG) were obtained and expanded in vitro by incubation with purified protein derivative. The ability of these cells to modulate the replication of virulent Mycobacterium bovis in autologous-infected macrophages was compare...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2005.01.003
更新日期:2004-11-01 00:00:00
abstract::Murine histocompatibility antigens were solubilized from the spleens and lungs of C57BL/6 (H-2b) animals with hypertonic salt (3 M KC1). Aggregate-free soluble antigens were incubated with nonadherent lymph node cells from BALB/c (H-2d) mice for 18 hr prior to their use as responder cells in the mixed-lymphocyte react...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90281-2
更新日期:1983-06-01 00:00:00
abstract::We investigated whether sn-1,2-dioctanoylglycerol (diC8) activates highly purified human T cells. diC8's signaling activity was also compared with that of 12-O-tetradecanoylphorbol-13-acetate (TPA). diC8 and ionomycin were synergistic in promoting T-cell proliferation. The proliferative response was dependent upon an ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(88)90243-2
更新日期:1988-10-15 00:00:00
abstract::Nontypeable Haemophilus influenzae (NTHi) is the etiological agent most frequently associated with bacterial exacerbations of chronic obstructive pulmonary disease (COPD). The present work shows that NTHi strains induced in primary normal human bronchial epithelial cells (NHBE) a cytokine/chemokine response in which C...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2009.09.008
更新日期:2010-01-01 00:00:00
abstract::Following interaction of the random polymer (Glu60,Phe40)n (GPhe) with antigen-presenting accessory cells (APC), unusual costimulatory activities were noted in several murine T cell systems. When GPhe, in contrast with other random copolymers (GT,GL), was added during "inhibition" and T cell "repertoire" studies as a ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90198-z
更新日期:1990-08-01 00:00:00
abstract::To improve the engraftment of human peripheral blood lymphocytes (PBL) to severe combined immunodeficient (SCID) mice, and to elucidate the factors which prevent the PBL's survival, we treated SCID mice with mAb, which neutralizes murine IFN-gamma's ability to activate cell-mediated immunity. Compared with untreated m...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1997.1238
更新日期:1998-01-10 00:00:00