Abstract:
:A 2-kDa synthetic derivative of the macrophage-activating lipopeptide (MALP-2) from Mycoplasma fermentans is a potent inducer of monocytes/macrophages and improves the immunogenicity of antigens co-administered by systemic and mucosal routes. Dendritic cells (DC) are the most potent antigen-presenting cells, which are able to prime naive T cells in vivo. To elucidate the underlying mechanisms of MALP-2 adjuvanticity, we analyzed its activity on bone marrow-derived murine DC. In vitro stimulation of immature murine DC with MALP-2 resulted in the induction of maturation with up-regulated expression of MHC class II, costimulatory (CD80, CD86) and adhesion (CD40, CD54) molecules. MALP-2 also enhances the secretion of cytokines (IL-1alpha, IL-6 and IL-12), and increases DC stimulatory activity on naive and antigen-specific T cells. Further studies demonstrated that MALP-2 treatment of DC results in a dose-dependent shift from the protein pattern of proteasomes to immunoproteasomes (up-regulation of LMP2, LMP7 and MECL1), which correlates with an increased proteolytic activity. Thus, the adjuvanticity of MALP-2 can be mediated, at least in part, by the stimulation of DC maturation, which in turn leads to an improved antigen presentation. Therefore, MALP-2 is a promising molecule for the development of immune therapeutic or prophylactic interventions.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Link C,Gavioli R,Ebensen T,Canella A,Reinhard E,Guzmán CAdoi
10.1002/eji.200324511keywords:
subject
Has Abstractpub_date
2004-03-01 00:00:00pages
899-907issue
3eissn
0014-2980issn
1521-4141journal_volume
34pub_type
杂志文章abstract::We analyzed the avidity and CD28-mediated co-stimulatory requirements for the activation of T cells in vivo and in vitro. The strength of the T cell/antigen-presenting cell interaction was varied by using altered peptide ligands for stimulation. Co-stimulatory requirements were studied using T cells from CD28-deficien...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260908
更新日期:1996-09-01 00:00:00
abstract::Chemokine receptors are important for recruiting leukocytes to sites of infection and may contribute to immune cell activation. The present study investigated the role of the chemokine receptor CCR2 in polymicrobial septic peritonitis. The results showed that peritoneal production of the CCR2 ligands CCL2 and CCL12 in...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425294
更新日期:2004-12-01 00:00:00
abstract::Cellular immune responses are likely to play a key role in determining the clinical outcome in acute infection with hepatitis C virus (HCV), but the dynamics of such responses and their relationship to viral clearance are poorly understood. In a previous study we have shown highly activated, multispecific cytotoxic T ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200009)30:9<2479::AID-IMMU2479>3
更新日期:2000-09-01 00:00:00
abstract::Dendritic cells (DCs) are the key APCs not only for the priming of naïve T cells, but also for the induction and maintenance of peripheral T-cell tolerance. We have recently shown that cognate interactions between Foxp3(+) Tregs and steady-state DCs are crucial to maintain the tolerogenic potential of DCs. Using DIETE...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201343738
更新日期:2014-04-01 00:00:00
abstract::Genetic control has been studied of the response to the encephalitogenic nonapeptide (NP) determinant of myelin basic protein (BP) in inbred guinea pigs of strains resistant or susceptible to induction of experimental autoimmune encephalomyelitis (EAE). By studying bone marrow-reconstituted animals, we found that susc...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830110409
更新日期:1981-04-01 00:00:00
abstract::An abnormal protein, from a petient with mu-chain disease has been studied: protein BUR. It is devoid of the F (ab'')2 mu fragment; molecular weight determinations and immunological data identify the protein as a F(c) 5 mu fragment. Similarly, carbohydrate determinations and proteolysis experiments relate it to a Fcmu...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830050306
更新日期:1975-03-01 00:00:00
abstract::Previously, we found that co-expression of CD25 and TNFR2 identified the most suppressive subset of mouse Treg. In this study, we report that human peripheral blood (PB) FOXP3(+) cells present in CD25(high), CD25(low) and even CD25(-) subsets of CD4(+) cells expressed high levels of TNFR2. Consequently, TNFR2-expressi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200940022
更新日期:2010-04-01 00:00:00
abstract::The thymic architecture is normally compartmentalized into a central medulla surrounded by a peripheral cortical region. We investigated how compartmentalization of the thymic stroma is regulated using T cell receptor (TCR)-transgenic mouse models. Our studies show that the signals generated by TCR/peptide/major histo...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270121
更新日期:1997-01-01 00:00:00
abstract::Deoxyguanosine (dGuo) has been implicated as the toxic metabolite causing a severe impairment of cellular immunity in children with a genetic deficiency of purine nucleoside phosphorylase (PNP). In peripheral blood T cells of normal donors both the pathway which leads to phosphorylation of dGuo (ultimately resulting i...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160412
更新日期:1986-04-01 00:00:00
abstract::Soluble TRAIL (sTRAIL) can be produced by myeloid-derived cells to kill cancer cells. Whether this mechanism is used by T cells, and if so, how sTRAIL production is regulated, remains unclear. Our previous studies showed that ex vivo expanded human γδ T cells express TRAIL and NK receptor group 2 (R2), member D (NKG2D...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201243150
更新日期:2013-12-01 00:00:00
abstract::The developmental stages and the role of protein tyrosine kinases (PTK) in the maturation of CD3+CD8 alpha alpha+ intraepithelial lymphocytes (IEL) have not been extensively characterized. However, comparisons of thymic and extrathymic T cell development indicate that these processes involve some distinct signaling an...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270229
更新日期:1997-02-01 00:00:00
abstract::Interleukin (IL)-7 and IL-2 are important lymphoproliferative cytokines which both use the gamma c chain as part of their respective receptors. To learn more of their signaling mechanisms a comparison was made of the patterns of intracellular tyrosine phosphorylated proteins induced by these cytokines in the murine T ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830261125
更新日期:1996-11-01 00:00:00
abstract::We have developed a quantitative assay for the measurement of class I assembly induced by peptide. We have applied this assay to H-2Db, Kb and HLA-A2.1 with a panel of 49 overlapping peptides derived from HIV-1 gag protein. We find that the effects of peptide on assembly form a continuous distribution. By defining pos...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210909
更新日期:1991-09-01 00:00:00
abstract::CD5 is expressed on T cells and a subset of B cells (B1a). It can attenuate TCR signalling and impair CTL activation and is a therapeutic targetable tumour antigen expressed on leukemic T and B cells. However, the potential therapeutic effect of functionally blocking CD5 to increase T cell anti-tumour activity against...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201948309
更新日期:2020-05-01 00:00:00
abstract::Immunizations via the i.n. and intravaginal (ivag) routes effectively generate strong genital tract antibody-mediated immunity. To what extent the same is true for T-cell responses is incompletely known. Therefore, we set out to investigate optimal conditions for stimulation of genital tract CD4(+) T-cell responses, ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201041297
更新日期:2011-09-01 00:00:00
abstract::T cell-depleted B cells from a patient with LFA-1 deficiency were tested in costimulation assays for responsiveness to recombinant human IL4 (BSF-1) and purified low molecular weight B cell growth factor (BCGFlow). In both cases the response of LFA-1-deficient B cells was comparable with normal controls. Monoclonal an...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830180212
更新日期:1988-02-01 00:00:00
abstract::In this study the genetic control of major histocompatibility complex (MHC) class II gene expression during the transition from B cell to plasma cell has been analyzed. Class II molecules are not expressed in plasma cells because of an active suppression resulting in the abrogation of class II gene transcription. We s...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830261028
更新日期:1996-10-01 00:00:00
abstract::Radiolabeled protein A from Staphylococcus aureus (SpA) injected i.v. into mice and rabbits forms a soluble [(IgG)2-(SpA)1]2 complex (Mr = 684 000) which is identical in composition to that formed by SpA in vitro with an equivalent amount or an excess of IgG. A soluble rabbit IgG-SpA complex injected into a mice or ra...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130802
更新日期:1983-08-01 00:00:00
abstract::We evaluated the role of regulatory T cells (CD4(+) CD25(+) Foxp3(+) cells, Tregs) in human Mycobacterium tuberculosis infection. Tregs were expanded in response to M. tuberculosis in healthy tuberculin reactors, but not in tuberculin-negative individuals. The M. tuberculosis mannose-capped lipoarabinomannan (ManLAM) ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200737268
更新日期:2008-02-01 00:00:00
abstract::Indirect immunofluorescence performed with 2 polyclonal and 4 monoclonal antibodies directed against human beta 2-microglobulin (beta 2m) revealed the presence of a beta 2m-like determinant on the membrane of a subpopulation of earthworm leukocytes classified as weakly adherent acidophils. Two out of the 4 monoclonal ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830131216
更新日期:1983-12-01 00:00:00
abstract::The heterogeneous nuclear ribonucleoprotein A2 (hnRNP-A2) has been described as an important autoantigen in rheumatoid arthritis (RA) since it is targeted by autoantibodies, autoreactive T cells, and is aberrantly expressed in synovial cells in patients. To identify hnRNP-A2-specific T-cell epitopes possibly associate...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200939482
更新日期:2010-06-01 00:00:00
abstract::The effect of fractionated total lymphoid irradiation (TLI) on the maturation of B cells was examined in mice. At various times after irradiation of the mice, their spleen cells were tested for the mitogenic responses to dextran sulfate and lipopolysaccharide. In parallel the cells were stained with fluorescent anti-T...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830130109
更新日期:1983-01-01 00:00:00
abstract::We have followed the fate of mature CD8+ T cells with a male-specific transgenic T cell receptor after antigenic stimulation with hemopoietic cells in the absence or presence of help. Our data show that mature CD8+ T cells can be deleted after a 3-week period of transient activation and that help, e.g. in the form of ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230835
更新日期:1993-08-01 00:00:00
abstract::Activation pathways inducing the expression of the interferon (IFN)-gamma gene in a cytotoxic T lymphocyte (CTL) clone were studied for their effects on transcription and on mRNA stability. IFN-gamma was secreted by the CTL clone in response to the Ca2+ ionophore ionomycin when used in conjunction with either protein ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250405
更新日期:1995-04-01 00:00:00
abstract::A cDNA coding for the human interleukin 1 receptor antagonist protein (IL 1Ra) was used to clone the corresponding murine cDNA. The nucleotide sequence of the open reading frame coding for the processed form of mIL 1Ra predicted a 152-residue protein that was 77% identical to human IL 1Ra. The cellular and tissue dist...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830211119
更新日期:1991-11-01 00:00:00
abstract::Invariant NKT cells were stimulated with cholesteryl O-acyl α-glycosides in the context of CD1d. The activated NKT cells have potential to sustain the homeostasis in the body exposed to excess in either Th1- or Th2-immunity. ...
journal_title:European journal of immunology
pub_type: 信件
doi:10.1002/eji.201847825
更新日期:2019-02-01 00:00:00
abstract::Fc gamma receptor-bearing U937 cells, when incubated in serum-free buffer, were found to release spontaneously a suppressor material for pokeweed mitogen-drigen IgG synthesis which could be retained on Sepharose 4B-IgG immunosorbents. Immunosorbents coupled with IgM or F (ab')2 fragments of IgG were unable to retain t...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160106
更新日期:1986-01-01 00:00:00
abstract::High frequencies of CD5+TcR alpha/beta- T cells were induced in the peritoneal cavity of rats immunized with syngeneic W439 lymphoma cells. These TcR alpha/beta- cells expressed TcR delta mRNA as analyzed by the polymerase chain reaction technique. The delta + (TcR gamma/delta +) T cells were of the CD2+, CD3+, CD4-, ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830211122
更新日期:1991-11-01 00:00:00
abstract::Previously we implicated c-Jun N-terminal kinase (JNK) as an element that is involved in signal integration during co-stimulation of T lymphocytes. This pathway has now been traced to an upper level, comprising MAPKK SEK1/MKK4/JNKK1 which, similarly to JNK, must receive input both from the TCR and CD28. A large portio...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199808)28:08<2320::AID-IMM
更新日期:1998-08-01 00:00:00
abstract::CD27, which belongs to the tumor necrosis factor receptor family, is expressed on germinal center (GC) but not on naive B cells, suggesting an important function of this molecule in the regulation of the GC reaction. We described here the expression of CD70, which is the ligand for CD27. We observed that in most tonsi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260508
更新日期:1996-05-01 00:00:00