Abstract:
:Immunoglobulin E (IgE)-dependent mechanisms play a pivotal role in mediating allergic disease. Previously, VH-Cepsilon transcripts from blood or spleen of atopic asthmatics have been analysed for VH gene usage and patterns of somatic mutation. An over-representation of the minor VH5 family has been observed, consistent with a superantigen drive. As local mucosal events in IgE production may be more significant in the disease process, we have analysed VH-Cepsilon transcripts from a bronchial biopsy of a patient with severe asthma. VH5 predominance was confirmed with 10 of 30 unique clones derived from this family. Repeated sequences, some with intraclonal variation, revealed clonal expansion and continuing mutational activity at the site. Unexpectedly, three unmutated VH-Cepsilon sequences were found, indicating that isotype switching to IgE can occur without mutation. Detection of a sister clone with extensive mutations was again consistent with local mutational activity. Evidence for local isotype switching was obtained by identification of clonally related immunoglobulin M (IgM), immunoglobulin G (IgG) and immunoglobulin E (IgE) sequences. However, in contrast to findings in blood, no IgG4 transcripts clonally related to IgE were detected, suggesting that the balance between synthesis of IgG4 and IgE may differ between systemic and local sites. These data confirm a VH5 bias in IgE, and support the concept that IgE-synthesizing B cells arise via local differentiation.
journal_name
Immunologyjournal_title
Immunologyauthors
Snow RE,Djukanovic R,Stevenson FKdoi
10.1046/j.1365-2567.1999.00910.xkeywords:
subject
Has Abstractpub_date
1999-12-01 00:00:00pages
646-51issue
4eissn
0019-2805issn
1365-2567pii
910journal_volume
98pub_type
杂志文章相关文献
IMMUNOLOGY文献大全abstract::IgM was purified from normal human colostrum and salivary secretions devoid of IgA. The isolated immunoglobulin was found to contain J chain, and showed a slight affinity for free secretory component (SC). In the secretions IgM was saturated with SC, but only 60--70 per cent of the molecules had retained the component...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1975-09-01 00:00:00
abstract::The non-specific normal immunosuppressive protein (Nip) has been described in our laboratory and its biological activity was extensively studied. In the present study, further purification analyses of Nip were conducted. Fractionation of Nip by Ultrogel AcA 34 column resulted in peak (I) that displayed Nip activity in...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1983-08-01 00:00:00
abstract::Mucosa-associated invariant T (MAIT) cells express the semi-invariant T-cell receptor TRAV1-2 and detect a range of bacteria and fungi through the MHC-like molecule MR1. However, knowledge of the function and phenotype of bacteria-reactive MR1-restricted TRAV1-2(+) MAIT cells from human blood is limited. We broadly ch...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12461
更新日期:2015-07-01 00:00:00
abstract::The in vitro treatment with Fusarenon-X, a mycotoxin produced by Fusarium nivale Fn 2B, depressed the mitogenic responses of mouse lymphocytes to the T-cell mitogens, phytohaemagglutinin (PHA) and concanavalin A (Con A), but to a lesser extent to B-cell mitogen, a bacterial lypopolysaccharide (LPS). The in vitro treat...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1982-04-01 00:00:00
abstract::Various methods for measuring monocyte numbers and function in human blood are compared. The assays used were: phagocytosis of antibody-sensitized sheep red cells; staining for diffuse non-specific esterase activity; capacity to adhere to polystyrene and ability to lyse human A1 red cells sensitized with allogeneic an...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1977-12-01 00:00:00
abstract::Dendritic cells (DC) isolated from the lymph nodes or spleens of mice and pulsed with contact sensitizers or protein antigens stimulate primary proliferative responses by syngeneic T cells and responses to alloantigens in the mixed leucocyte reaction (MLR). Using enriched human peripheral blood DC, we attempted to sti...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1994-10-01 00:00:00
abstract::Random-bred TO mice have been selectively bred into two lines on the basis of the relative affinity (KR) of antibody produced to protein antigens, one line producing high and the other low KR antibody. After four generations of selective breeding the difference in KR between the two lines was highly significant (P les...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1975-09-01 00:00:00
abstract::C57Bl/6 (B6) mice produced highly developed granulomata in the lung 3 or 4 weeks after intravenous injection with oil-associated BCG cell walls (CW), but C3H/He (C3H) mice did not. The potential to develop granulomata is genetically controlled (Yamamoto & Kakinuma, 1978). It is probable that the genes control only T-c...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1981-05-01 00:00:00
abstract::Recent studies in mice have highlighted the importance of polymorphic genetic loci such as the major histocompatibility complex (MHC) or minor lymphocyte-stimulating antigen (Mls) in determining the nature of the peripheral T-cell receptor (TcR) population. As our knowledge of the equivalent process in humans is incom...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1991-10-01 00:00:00
abstract::Many experiments have demonstrated that the nervous and immune systems interact in a bidirectional fashion. Neuropeptides, including substance P, have been shown to modulate lymphocyte DNA, RNA and immunoglobulin synthesis in vitro and to play a role in inflammatory and hypersensitivity disease states. However, the ro...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract::Loss of ζ-associated protein 70 (Zap70) results in severe immunodeficiency in humans and mice because of the critical role of Zap70 in T-cell receptor (TCR) signalling. Here we describe a novel mouse strain generated by N-ethyl-N-nitrosourea mutagenesis, with the reduced protein stability (rps) mutation in Zap70. The ...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12199
更新日期:2014-03-01 00:00:00
abstract::with AgB-primed B or T cells and injected into syngeneic X-irradiated recipients. Anti-THF and anti-Eid purified by an AgB-specific T suppressor factor (TSF) affi-gel adsorbent retain their ability to specifically initiate [3H]-thymidine incorporation of AgB-primed T cells. The data indicate that both anti-THF and ant...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1982-02-01 00:00:00
abstract::Purified pertussis toxin (PPT) is a potent mitogen for human T lymphocytes and is shown to cause rapid calcium mobilization in resting T cells, a T-cell line and CD3- lymphocytes with natural killer (NK) activity. In resting T cells the PPT activation is associated with cytoplasmic alkalinization. A similar rise in in...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1988-07-01 00:00:00
abstract::Donor mice were painted on the skin of the abdomen with the contact sensitizing agent, oxazolone. One day later 2-5 x 10(6) cells from the regional lymph nodes were injected into the footpads of recipient mice. Contact sensitivity was detected 6 days later by challenging the ears of the recipients and measuring the in...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1979-05-01 00:00:00
abstract::Lymphocytes are heterogeneous with respect to their life-span. Typical B cells, bearing on their membranes immunoglobulin receptors, easily detectable by immunofluorescence, belong mainly to the long-lived population: this can be observed using combined autoradiography and immunofluorescence. However, when primed mice...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1975-05-01 00:00:00
abstract::The amount and relative affinity of antibodies to tetanus toxoid were measured, following immunization, in patients with chronic or recurrent acute chest infections and in healthy controls. The responding patients and controls produced similar amounts of antibody and, although antibody affinity was higher in the contr...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
abstract::Cocultures of dispersed human fetal liver cells with murine Swiss 3T3 fibroblasts resulted in the development of human mast cells after 1 to 4 weeks of culture. Mast cells were detected by immunohistochemistry using a murine monoclonal anti-tryptase antibody, before metachromasia appeared with toluidine blue. When sub...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract::Lymph nodes (LN) are secondary lymphoid organs spread throughout the lymphatic system. They function to filter pathogenic material from the lymphatic fluid to maintain the health of the organism. Subcapsular sinus macrophages (SCSM) are among the first-responders within the LN due to their strategic location within th...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12727
更新日期:2017-06-01 00:00:00
abstract::Co-expression of EP2 and EP3 subtypes of prostaglandin E2 (PGE2) receptors (R) by U937 human monocytic cells permitted comparative studies of desensitization of each subtype. Specific binding of [3H]PGE2 to membranes of U937 cells showed a Kd of 2.9 +/- 0.3 nM (mean +/- SEM) and a Bmax of 40.5 +/- 1.0 fmol/mg protein,...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::The activation of guinea-pig eosinophils was studied by measuring the production of superoxide anion (O2-) and the secretion of eosinophil peroxidase (EPO). Phorbol myristate acetate (PMA), calcium ionophore, plasma-activated zymosan, concanavalin A and recombinant human anaphylatoxin C5a induced the release of varyin...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::It is important to identify characteristics that confer on proteins the potential to induce allergenic sensitization and allergenic disease. Protein allergens carry T-cell epitopes that are capable of inducing a type 2 T helper (Th2) cell response. There is limited information regarding factors that govern the allerge...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.2001.01314.x
更新日期:2001-11-01 00:00:00
abstract::Human neutrophils express Toll-like receptor 4 (TLR4) at low levels, and the role of this receptor in neutrophil responses to microbial stimuli has been questioned. Genetic manipulation of these cells to enable the study of the role of proteins such as TLR4 in their function is challenging. Here, we show that primary ...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2567.2008.02949.x
更新日期:2009-06-01 00:00:00
abstract::Membrane sialoglycoprotein (GP) of mouse erythrocytes were incorporated into artificial membranes of liposomes which also contained DNP-aminocaproylphosphatidylethanolamine hapten. The liposomes were tested for their potential to modulate the anti-hapten antibody response in mice as a plausible model of haptenated iso...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1984-12-01 00:00:00
abstract::Hepatitis C virus (HCV) infection is a global health problem characterized by a high rate of chronic infection, which may in part be due to a defect in myeloid dendritic cells (mDCs). This defect appears to be remedied by treatment with interferon-α (IFN-α) -based antiviral therapies; however, the molecular mechanisms...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12350
更新日期:2014-12-01 00:00:00
abstract::A suppressive B-cell factor (SBF)-producing hybridoma termed TS-4.44 was established by fusion of B cells which possessed receptors for the Fc portion of IgG (FcR gamma + B cells) and thymidine kinase defective fibroblasts, 3T3-4E cells. The biological properties of hybridoma-produced SBF (Hyb-SBF) are almost the same...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1983-12-01 00:00:00
abstract::Although it is clear that the CD45 tyrosine phosphatase is required for efficient T-cell activation and T-cell development, the factors that regulate CD45 function remain uncertain. Previous data have indicated that there is an association of CD45 with CD4 and the T-cell receptor (TCR) complex controlled by the variab...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2567.2007.02602.x
更新日期:2007-08-01 00:00:00
abstract::Mice fed a protein-deficient diet containing 2% ovalbumin for 6 weeks (PD) show a reduced spleen IgA plaque-forming cell (PFC) response after oral immunization with sheep red blood cells (SRBC), compared to the response of mice fed a control diet containing 20% ovalbumin (C). This reduced IgA PFC response was partiall...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1988-08-01 00:00:00
abstract::The biological effects of three thymosin fraction 5 polypeptides, designated as beta 10, beta 4, and alpha 1 were tested in the MLR of mouse splenocytes, lymph node cells and thymocytes against syngeneic or allogeneic stimulators. It was found that all three polypeptides, after in vivo and in vitro treatment of the re...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1985-04-01 00:00:00
abstract::Suramin, a polyanionic and polycyclic compound, was initially used for the treatment of trypanosomiasis and onchocerciasis. In the last decade, it has been used in therapy of cancer and acquired immune deficiency syndrome (AIDS). The influence of suramin on the expression of various markers by human mononuclear phagoc...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1994-04-01 00:00:00
abstract::Two phenotypically distinct subpopulations of dendritic cells (SIRPalpha+ CC81Ag- DC and SIRPalpha- CC81Ag+ DC) have previously been identified in bovine afferent lymph which show functional differences when assayed in vitro. The purpose of this study was to investigate whether differences in cytokine production betwe...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.2003.01712.x
更新日期:2003-09-01 00:00:00