Abstract：
:The chemokine receptor CCR2 binds four pro-inflammatory monocyte chemoattractant proteins, designated MCP1/CCL2, MCP2/CCL8, MCP3/CCL7 and MCP4/CCL13. This study demonstrates the important biology of this receptor during the response to the chemokine milieu. Competitive chemotaxis and calcium flux assays were performed utilising mixtures of chemokines to assess a hierarchal arrangement of chemokine prepotency; these demonstrated that the MCP2-CCR2 interaction is able to supersede signals generated by RANTES, another pro-inflammatory chemokine, or the homeostatic chemokine SDF1. These observations were validated using three physiologically relevant monocytic cell lines. Having identified the importance of CCR2, experiments were then performed to examine the signal transduction processes coupled to this receptor. G protein coupling was initially examined; Cholera toxin reduced the chemotactic response to MCP2 (p<0.001), whilst the response to the other MCP chemokines remained normal. The response to MCP2 was uniquely inhibited by elevated concentrations of cAMP and, unlike MCP1, 3 and 4 (p<0.05), MCP2 failed to inhibit adenylate cyclase. Expression of dominant negative H-ras demonstrated that each MCP chemokine required active ras in order to elicit ERK activation and a chemotactic response. Unlike MCP1, MCP2 failed to induce nuclear translocation of activated ERK1 or subsequent induction of c-Myc expression. Akt activation also showed ligand-specific differences, with MCP2 producing a delayed response compared to the other MCP chemokines. Together these data highlight the importance of CCR2 and suggest that it is a powerful tool for fine tuning the immune response.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
O'Boyle G,Brain JG,Kirby JA,Ali Sdoi
10.1016/j.molimm.2006.09.033subject
Has Abstractpub_date
2007-03-01 00:00:00pages
1944-53issue
8eissn
0161-5890issn
1872-9142pii
S0161-5890(06)00640-7journal_volume
44pub_type
杂志文章abstract：:Tumor-associated macrophages (TAMs) are preferentially M2 skewed and promote tumor growth, angiogenesis, invasion, and/or metastasis. In this study, we have analyzed the in vitro immunomodulatory potential of a non-toxic neem leaf glycoprotein (NLGP) in reprogramming Stage III supraglottic laryngeal tumor cell lysate ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2014.01.015
更新日期：2014-06-01 00:00:00
abstract：:A sheep cDNA library was screened with a human C mu probe, and the complete nucleotide sequence of a 1923 nt cDNA was determined. It contains sequences corresponding to all the exons (VH, DH, JH, CH1, CH2, CH3 and CH4) characteristic of the immunoglobulin mu heavy chain regions. The deduced amino acid sequence shows a...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(92)90120-m
更新日期：1992-07-01 00:00:00
abstract：:As an initial step towards the molecular analysis of the murine V kappa locus, a cosmid library from BALB/cJ mouse liver DNA was screened with probes representing 10 V kappa families. Of eight cosmids that were isolated from the initial screen, five contained a single restriction fragment that hybridized to the probes...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(92)90015-p
更新日期：1992-03-01 00:00:00
abstract：:Major histocompatibility complex (MHC) molecules present peptide antigens to T lymphocytes and initiate immune responses. The peptides loaded onto MHC class I or MHC class II molecules can be derived from cytosolic proteins, both self and foreign. A variety of cellular processes, including endocytosis, vesicle traffic...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2018.05.009
更新日期：2018-07-01 00:00:00
abstract：:Individually amplified kappa cDNA molecules from single B lymphocytes revealed sequence heterogeneity and aberrantly spliced products. The nature and frequency of the base changes and their absence from similarly amplified beta2 microglobulin transcripts indicate that they were not derived by Taq polymerase misincorpo...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(00)00055-9
更新日期：2000-04-01 00:00:00
abstract：BACKGROUND:Atopic dermatitis (AD) or atopic eczema is a skin disease characterized with itching, increased serum level of immunoglobulin E, and peripheral eosinophilia. Thymoquinone (TQ) is an important ingredient of Nigella sativa seeds having antioxidant and anti-inflammatory effects. OBJECTIVE:Present study investi...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2018.07.013
更新日期：2018-09-01 00:00:00
abstract：:Increasing evidence has demonstrated that the epithelial cells in the lung play crucial roles in regulating certain inflammatory responses by modulating Wnt signaling during microbial infection. However, the anti-microbial functions of Wnt signaling in alveolar epithelial cells remain elusive. In this report, we show ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2014.02.002
更新日期：2014-06-01 00:00:00
abstract：:Phosphocholine (PC)-specific antibodies that arise in the mouse in response to Proteus morganii (PM) and use V1-DFL16.1-JH1 are characterized by a number of recurring mutations. Most striking is an invariant A for G substitution in codon 95 of VH which results in an asparagine instead of aspartate at that position. Be...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(93)90069-n
更新日期：1993-03-01 00:00:00
abstract：:A variety of important cellular functions are regulated by cytokines. The Jak-STAT pathway is one of the important signaling pathways downstream of cytokine receptors. Following binding of a ligand to its cognate receptor, receptor-associated Jaks are activated. STAT proteins are then in turn activated by tyrosine pho...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/s0161-5890(00)00018-3
更新日期：2000-01-01 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：:Since secretion of IgE antibodies is known to be blocked by tunicamycin, the first aim of the present study was to determine at which step of glycosylation or processing secretion was restored. For this purpose, murine hybridoma cells secreting an anti beta-lactoglobulin IgE were incubated either in the presence of in...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(87)90187-8
更新日期：1987-08-01 00:00:00
abstract：:The fifth component of the complement cascade, C5a, was iodinated using the Bolton-Hunter reagent. Results from the present study, using the high affinity ligand, [125I]Bolton-Hunter-labeled C5a ([125I]BH-C5a), revealed a single binding site on membranes prepared from human neutrophils, U-937 cells and human monocytes...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(92)90168-w
更新日期：1992-11-01 00:00:00
abstract：:The effect of antibody affinity on molecular forms of immune complexes was investigated by measuring antigen-antibody interactions using surface plasmon resonance (SPR), electrospray ionization time-of-flight mass spectrometry under non-denaturing conditions (MS), analytical ultracentrifugation (AUC), and transmission...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.09.009
更新日期：2009-12-01 00:00:00
abstract：:Although the lambda-bearing antibodies represent only 5% of the total mouse serum immunoglobulins, some antigens such as B1355 dextran (alpha (1-3)Dex), the 4-hydroxy-3-nitrophenyl acetyl (NP) and 2,4-dinitro or 2,4,6-trinitrophenyl (DNP/TNP) antigens can induce lambda-positive immune responses. In contrast to the lam...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(88)90061-2
更新日期：1988-02-01 00:00:00
abstract：:In human peripheral blood, most of the CD3+ cells express the alpha/beta T cell receptor. A smaller fraction of CD3+ T cells express the gamma/delta T cell receptor (from 1 to 10% depending the individuals, with an average of 3-5%). Interestingly, although the alpha/beta + T cells never express the gamma chain at the ...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/0161-5890(92)90001-e
更新日期：1992-04-01 00:00:00
abstract：:The complement system is a vital component of the immune-priveliged human eye that is always active at a low-grade level, preventing harmful intraocular injuries caused by accumulation of turnover products and controlling pathogens to preserve eye homeostasis and vision. The complement system is a double-edged sword t...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2017.05.028
更新日期：2017-09-01 00:00:00
abstract：:Lysozyme is an important component of the insect non-specific immune response against bacteria that is characterized by its ability to break down bacterial cell-walls. By searching an EST database from the fall armyworm, Spodoptera frugiperda (Negre et al., 2006), we identified five sequences encoding proteins of the ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.09.028
更新日期：2009-12-01 00:00:00
abstract：:PKZ, protein kinase containing Z-DNA binding domains, is a novel member of eIF2α kinase in fish. PKZ can be up-regulated in response to Poly I:C or heat stress, and it has a typical eIF2α kinase activity. However, the relationship between fish PKZ and apoptosis remains unclear. In the present study, effects of PKZ on ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2015.11.006
更新日期：2016-01-01 00:00:00
abstract：:The concomitant effects of trans-chromosomal allotype suppression of both an a VH and an n Cmu locus allotype in multiheterozygous rabbits were investigated. For example of the expression of the a2 VH and n81 Cmu allotypes were suppressed in a multiheterozygous rabbit having the a1 chi-y-n81de12,15f73g74/a2 chi 32y33n...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(82)90257-7
更新日期：1982-01-01 00:00:00
abstract：:Tunicamycin inhibited the synthesis of glycosylated mu-chains and kappa-chains in the human lymphoblastoid cell line, Daudi. Nonglycosylated IgM could not be detected on the surface of tunicamycin-treated cells by cell surface iodination techniques even under conditions where membrane IgM was re-expressed in control c...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(83)90106-2
更新日期：1983-01-01 00:00:00
abstract：:The functional importance of each amino acid residue making up the antigenic determinants of three different peptide-mAb interactions was determined using complete series of substitution analogs of the three immunizing synthetic peptides. Fingerprint substitution profiles for the three different antigenic determinants...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(93)90032-7
更新日期：1993-04-01 00:00:00
abstract：:CD55 is a key regulator of complement activation, expressed on most tissues and cells in man and other mammals. In the rat, alternative splicing in the gene encoding CD55 yields GPI-anchored (GPI-CD55) and transmembrane (TM-CD55) forms. Published Northern blot analysis indicated that while GPI-CD55 was broadly express...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2006.08.018
更新日期：2007-03-01 00:00:00
abstract：:Subunits of the mitochondrial ATP synthase complex are expressed on the surface of tumors, bind the TCR of human Vgamma9/Vdelta2 lymphocytes and promote their cytotoxicity. Present experiments show that detection of the complex (called ecto-F1-ATPase) at the cell surface by immunofluorescence correlates with low MHC-c...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.05.026
更新日期：2008-01-01 00:00:00
abstract：:Very sensitive assays of IgE are required for determining prevalence of allergic reactions in children. In order to develop a sensitive two-site IRMA two kinds of mAb were produced. Antibodies specific for D epsilon 1 determinants were derived from immunization with a 40 kDa papain Fc fragment. They bound equally nati...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(87)90158-1
更新日期：1987-11-01 00:00:00
abstract：:T-cell-replacing factor (TRF)/IL-5 is a T-cell-derived glycoprotein which has pleiotropic activity on lymphoid and myeloid cells. IL-5 polypeptide translated into Xenopus oocytes are heterogeneous in molecular size (40,000 to 60,000 under nonreducing conditions) and yields a monomeric form (Mr of 25,000 to 30,000) und...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(90)90158-v
更新日期：1990-09-01 00:00:00
abstract：:We have recently isolated and characterized human and mouse genes of a putative natural killer (NK) cell tumour-recognition protein (NK-TR) that is specifically expressed in NK cells. This gene codes for a 150 kD protein with a cyclophilin-related amino terminus followed by several positively charged domains. We repor...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(93)90047-f
更新日期：1993-10-01 00:00:00
abstract：:Increasing evidence suggests that inflammation and apoptosis are involved in the development of acute myocardial ischemia (AMI). Nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) have recently been identified as key mediators of inflammatory responses. The aim of this study was to explore the speci...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2016.06.013
更新日期：2016-08-01 00:00:00
abstract：:Endogenous mouse mammary tumor proviruses (MMTV; Mtv loci) deletes Vbeta6 expressing T cells in the thymus of Mtv-7(+) DBA/2 (H2(d)) mice through negative selection. We found that in Mtv-7(-) BALB/c (H2(d)) mice, Vbeta6 is a dominant V gene used in T cell responses to an 18 amino acid long peptide antigen: EYKEYAEYAEY...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.11.006
更新日期：2010-02-01 00:00:00
abstract：:A phosphorylcholine (PC)-binding IgG (Mab2) antibody produced by a hybridoma derived from a BALB/c mouse which had been immunized against Trichinella spiralis was found to bind to the immunizing antigen (TSC) but not to other PC-associated antigens such as pneumococcal antigen (PNC) and PC-conjugated ovalbumin (PC-OVA...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(94)90106-6
更新日期：1994-10-01 00:00:00
abstract：:A 30,000 mol. wt component (beta) is associated in a 1:1 ratio with the 50,000 mol. wt glycoprotein (alpha) which binds immunoglobulin E (IgE) on mast cells and related tumor cells. We show that alpha and beta are associated in membrane preparations. This is consistent with previous results which showed labeling of be...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(82)90334-0
更新日期：1982-02-01 00:00:00
