Abstract:
:To date, although a promising anti-inflammatory activity of oligomeric proanthocyanidins (OPCs) has been observed in asthma, the mechanism responsible for these immunomodulatory properties remains obscure. Dendritic cells (DCs) that reside in the airway have been widely perceived as an important contributor to asthma. Our study was to demonstrate OPCs' effects on maturation and immunoregulation of pulmonary CD11c+ dendritic cells (DCs). BALB/c mice were exposed to ovalbumin (OVA) to induce murine model of asthma. In addition, pulmonary DCs and bone marrow-derived DCs (BMDCs) cultures were used to evaluate impacts of OPCs on DCs function. The results obtained here indicated that OPCs treatment dramatically reduced airway inflammation, such as the infiltration of inflammatory cells and the levels of allergen-specific serum IgE and Th2 cytokines. The expression of co-stimulatory molecules especially CD86 distributed on pulmonary DCs and bone marrow-derived DCs (BMDCs) also markedly declined. The phosphorylation of cAMP responsive element-binding protein (CREB) was significantly inhibited while no changes were observed in the expression of cAMP responsive element modulator (CREM). By transferring BMDCs into the airways of naïve mice, we found that OPCs-treated DCs (DC+OVA+OPC) were much less potent in promoting CD4+ T cells proliferation than OVA-pulsed DCs (DC+OVA), followed by the ameliorated eosinophilic inflammation in airway. Our findings tailor a novel profile of OPCs in the regulation of DCs function, shedding new light on the therapeutic potential of OPCs in asthma management.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Li Y,Yu Q,Zhao W,Zhang J,Liu W,Huang M,Zeng Xdoi
10.1016/j.molimm.2017.09.012subject
Has Abstractpub_date
2017-11-01 00:00:00pages
209-217eissn
0161-5890issn
1872-9142pii
S0161-5890(17)30511-4journal_volume
91pub_type
杂志文章abstract::The migration of dendritic cells (DCs) from the site of antigen-encounter to regional lymphoid organs is crucial for DCs to function as potent antigen-presenting cells. Matrix metalloproteinase-9 (MMP-9) is critically for DCs migration across extracellular matrix (ECM). We verified in previous studies that hypoxia dim...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2007.12.002
更新日期:2008-04-01 00:00:00
abstract::Superantigens, like staphylococcal enterotoxin A (SEA), induce a strong proliferative response followed by clonal deletion of a substantial portion of defined V(beta) T-cells. The remaining cells display in vitro anergy. Anergy is a major mechanism to ensure antigen-specific tolerance in T-lymphocyte in the adult. Co-...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2004.03.001
更新日期:2004-05-01 00:00:00
abstract::Class switch DNA recombination (CSR) substitutes an immunoglobulin (Ig) constant heavy chain (C(H)) region with a different C(H) region, thereby endowing an antibody with different biological effector functions. CSR requires activation-induced cytidine deaminase (AID) and occurrence of double-strand DNA breaks (DSBs) ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2008.07.003
更新日期:2008-11-01 00:00:00
abstract::Interleukin-12 (IL-12) is a heterodimeric cytokine produced by macrophages in response to intracellular pathogens and provides an obligatory signal for the differentiation of T-helper-1 cells. p300 is an important histone acetyltransferase (HAT) and has been implicated in the regulation of gene expression. Whether p30...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2004.05.013
更新日期:2004-11-01 00:00:00
abstract::The dynamics of human antigen-specific immunoglobulin (Ig) responses in early life are not well characterized. We have previously observed an inverse relationship between allergen-specific Ig concentration and allergen-Ig-binding affinity in allergen-sensitive atopic adults, suggesting a possible feedback relationship...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2004.07.006
更新日期:2005-01-01 00:00:00
abstract::Immunoglobulins are important elements of the adaptive immune system that bind to an immense variety of microbial antigens to neutralize infectivity and specify effector functions. In the present study, the immunoglobulin heavy chain constant region (IGHC) genes from marine mammals were identified and compared with th...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2018.04.011
更新日期:2018-07-01 00:00:00
abstract::The molecular structure of protein and epitope mapping strategies are required to engineer the epitopes of a protein. In the present study, IgE binding regions of osmotin were identified and mutated to obtain hypoallergenic variant. The three dimensional (3-D) model of osmotin obtained by homology modeling comprised o...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2014.10.019
更新日期:2015-03-01 00:00:00
abstract::Protein kinase C-associated kinase (PKK; DIK/RIP4) is an ankyrin-repeat containing serine/threonine receptor-interacting protein (RIP)-family kinase that can activate NFkappaB, and is required for keratinocyte development. In earlier studies, the expression of a catalytically inactive mutant of PKK in the B cell linea...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2005.09.009
更新日期:2006-04-01 00:00:00
abstract::T-cell activation requires interaction of T-cell receptors (TCR) with peptide epitopes bound by major histocompatibility complex (MHC) proteins. This interaction occurs at a special cell-cell junction known as the immune or immunological synapse. Fluorescence microscopy has shown that the interplay among one agonist p...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2007.09.022
更新日期:2008-03-01 00:00:00
abstract::Egr-1 is an immediate early gene that is rapidly upregulated in response to mitogenic signals induced by antigen receptor crosslinking on murine B lymphocytes. It has been shown that levels of Egr-1 expression are closely correlated with B cell proliferation in several models of B cell activation and tolerance. We com...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(93)90463-l
更新日期:1993-11-01 00:00:00
abstract::We describe several proteins that are components of the rabbit B cell receptor complex. Two proteins (37 kDa and 42 kDa) were found in non-covalent association with IgM expressed on B cells from peripheral blood. These proteins were also immunoprecipitated by anti-B29 (Ig-beta) and anti-mb1 (Ig-alpha) monoclonal antib...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(95)00028-d
更新日期:1995-07-01 00:00:00
abstract::Aging is an irreversible physiological process characterized by increased risk of diseases, reduced effectiveness of vaccines, and decreased immune responses. One of the most prominent paradigms of aging and age related conditions is the progressive accumulation of un-repaired DNA breaks leading to apoptosis and exhau...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2012.07.001
更新日期:2013-01-01 00:00:00
abstract::Rearrangements in reading frame 2 promote the expression of a truncated heavy chain, the Dmu protein. Dmu can assemble into a pre-B cell receptor like complex that appears to induce a subset of signals elicited by full length mu, but cannot promote the pro-B to pre-B cell transition of Rag-/- B cells. In order to dete...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2005.09.020
更新日期:2006-03-01 00:00:00
abstract::Porphyromonas gingivalis causes periodontal diseases and its lipopolysaccharide (LPS) is considered as a major virulence factor responsible for pathogenesis. Since initial recognition of P. gingivalis LPS (Pg.LPS) in the oral cavity might be crucial for the host response, we identified Pg.LPS-binding proteins (Pg.LPS-...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2011.06.434
更新日期:2011-09-01 00:00:00
abstract::Conjugates of monoclonal antibodies and Pseudomonas exotoxin A (PE) were formed with disulfide or thioether bonds. Thioether conjugates which formed with succinimidyl 4-(N-maleimidomethyl)-cyclohexane-1-carboxylate (SMCC) modified PE and reduced antibody formed with an 80% yield of equimolar conjugate within 30 min wi...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(90)90140-u
更新日期:1990-03-01 00:00:00
abstract:BACKGROUND:A T cell subtype with the CD4+CD25-FoxP3+ phenotype was recently described. We aimed to investigate the frequency of these cells and their ability to produce cytokines in tumor-draining lymph nodes from patients with breast cancer (BC). MATERIALS AND METHODS:Mononuclear cells from lymph nodes of 20 patients...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2019.10.007
更新日期:2019-12-01 00:00:00
abstract::Purified human C5 was converted non-enzymically to an activated form as defined by its ability to participate in reactive lysis. This conversion occurred following exposure to systems that generate oxygen radicals, namely addition of H2O2 in the presence of ascorbic acid and iron or the addition of xanthine oxidase, a...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(89)90057-6
更新日期:1989-12-01 00:00:00
abstract::We recently identified IgE-binding epitopes of bovine serum albumin (BSA), the major beef allergen, and found that the major epitope structure contains an EXXV motif. Here we report hypoallergenic analogue peptides of BSA that preserve T cell reactivity to retain the capacity to induce immunotolerance. Substitution of...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2004.04.028
更新日期:2004-07-01 00:00:00
abstract::Macrophages play an important role both in innate and adaptive immune responses. Treatment with interferon (IFN) γ together with lipopolysaccharide (LPS) activates pro-inflammatory macrophages which secrete various pro-inflammatory cytokines including IL-12. IL-12 promotes a Th1 type immune response by directly contro...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2012.03.017
更新日期:2012-07-01 00:00:00
abstract::Mycobacterium tuberculosis (M.tb) infects 8 million and kills 2.2 million people each year worldwide. M.tb modulates the immune response of the infected individual. Empirically, suppressor carbohydrates (SC) produced by CD8+ T cells in response to M.tb were found to induce a T helper 2 response rather than a protectiv...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2007.10.022
更新日期:2008-03-01 00:00:00
abstract::An IgGl(lambda) Mot myeloma protein showed a unique susceptibility toward papain digestion. The Fab fragment of Mot was more digestible with papain than the Fc fragment. This phenomenon was found to occur by unusual cleavage of the Fd fragment with papain. Determination of the complete primary structure of the V regio...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(86)90039-8
更新日期:1986-02-01 00:00:00
abstract::We have designed and produced a stable bispecific scFv dimer (bisFv) by non-covalent association of two hybrid VH-VL pairs derived from an anti-neuraminidase antibody (NC10) and an anti-glycophorin antibody (1C3). The bisFv dimer was demonstrated to have binding activity to the two respective target antigens and was e...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/s0161-5890(96)00097-1
更新日期:1996-12-01 00:00:00
abstract::A bovine papilloma virus-derived vector was used to direct the high level expression in mouse C127 cells of three different cDNAs encoding the human interleukin-2 receptor. These were: the previously described cDNA clone isolated from the T-cell lymphoma, HUT-102; a cDNA clone isolated from mitogen-activated, normal p...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(86)90123-9
更新日期:1986-09-01 00:00:00
abstract::Maspin (mammary serine protease inhibitor) is a non-inhibitory member of the serine protease inhibitor superfamily and a tumor suppressor in several cancers due to its ability to inhibit cell invasion, angiogenesis, and promote apoptosis. However, its immunomodulatory function remains largely unexplored. Thus, we expl...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2016.12.021
更新日期:2017-02-01 00:00:00
abstract::The two N-linked oligosaccharides in native human C9 were deleted by site-specific mutagenesis. This aglycosyl-C9 did not differ from its native form in hemolytic and bactericidal activity. A new N-glycosylation site (K311N/E313T) was introduced into the turn of a helix-turn-helix [HTH] fold that had been postulated t...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2010.01.013
更新日期:2010-04-01 00:00:00
abstract::MiRNAs are a class of endogenous tiny RNAs that act as inhibitors of translation or promote RNA degradation by duplex-formation within the 3'-UTR of target mRNAs. They play an important role during a wide range of cellular processes by fine-tuning of gene expression. The differentiation of monocytes to macrophages pla...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2013.06.014
更新日期:2013-12-01 00:00:00
abstract::Leishmania infantum pyridoxal kinase (PK) protein was characterized after an immunoproteomics screening performed with the sera from patients suffering visceral leishmaniasis (VL). Since it was recognized by sera of mammalian hosts infected by a viscerotropic Leishmania species, PK could emerge as a new vaccine candid...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2020.06.010
更新日期:2020-08-01 00:00:00
abstract::The purpose of the present work was to determine the ability of BgTX peptides, corresponding to the various loops and exposed regions of alpha-bungarotoxin (BgTX) and representing regions that are recognized by B and/or T cells, to stimulate protective immunity in mice against in vivo challenge with BgTX. The BgTX LD5...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(96)00014-4
更新日期:1996-05-01 00:00:00
abstract::A common feature of human IgG1 antibodies used for cancer treatment is that their anti-tumour efficacy requires high serum trough levels and continued therapy for several months. Treatment cycles, thereby, consume several grams of IgG1 translating into significant drug needs and costs. The basis for the low in vivo ef...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2005.07.010
更新日期:2006-03-01 00:00:00
abstract::The analysis of the antigenic structure of human interferon (IFN)-alpha 1 with a panel of monoclonal antibodies revealed four immunodominant regions. Three of them, recognized by 12 of 14 antibodies were mapped into the aminoterminal portion of IFN-alpha 1 around residues 31-38, 43-53 and 63-85. The region 31-85 prove...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(92)90124-g
更新日期:1992-07-01 00:00:00