Abstract:
:CD40 ligand (CD40L) and IL-4 are sufficient to induce resting murine B cells to divide and switch isotypes from IgM and IgD to IgG1 and IgE. Tracking of cell division following (5- and 6) carboxyfluorescein diacetate succinimidyl ester (CFSE) labeling revealed that B cells expressed IgG1 after three cell divisions, and IgE after five. The probability of isotype switching at each division was independent of both time after stimulation and of the dose of CD40L. IL-4 concentration regulated the number of divisions that preceded isotype switching. Loss of surface IgM and IgD was also related to cell division and appeared to be differentially regulated. B cell proliferation was typically asynchronous with the proportion of cells in consecutive divisions being markedly affected by the concentration of CD40L and IL-4. Simultaneous (5-bromo)-2'-deoxyuridine labeling and CFSE staining revealed that B cells in each division cycle were dividing at the same rate. Therefore, division cycle asynchrony resulted from dose-dependent variation in the time taken to enter the first division cycle. These results suggest that T-dependent B cell expansion is linked to predictable functional changes that may, in part, explain why IgE is produced in response to prolonged antigenic stimulation.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Hasbold J,Lyons AB,Kehry MR,Hodgkin PDdoi
10.1002/(SICI)1521-4141(199803)28:03<1040::AID-IMMsubject
Has Abstractpub_date
1998-03-01 00:00:00pages
1040-51issue
3eissn
0014-2980issn
1521-4141pii
10.1002/(SICI)1521-4141(199803)28:03<1040::AID-IMMjournal_volume
28pub_type
杂志文章abstract::Stromal elements are major components of lymphoid tissues contributing to both tissue architecture and function. In this study we report on the phenotype and function of fibroblast-like stromal cells obtained from human spleen. These cells express high levels of CD44 and ICAM-1 and moderate levels of VLA-4, VCAM, CD40...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199812)28:12<3940::AID-IMM
更新日期:1998-12-01 00:00:00
abstract::Regulatory T cells (Treg) are vital in maintaining the homeostasis of immune reactions. In chronic infections, such as schistosomiasis, it remains unclear whether engagement of the TLR family is required to induce Treg activity. Thus, we performed in vivo studies using TLR2-/- mice infected with Schistosoma mansoni an...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200737063
更新日期:2007-08-01 00:00:00
abstract::KARAP/DAP12 is a broadly distributed transmembrane signaling polypeptide with an immunoreceptor tyrosine-based activation motif, and is non-covalently associated with a variety of activating surface receptors. We report here the characterization of transgenic mice that overexpress KARAP/DAP12 polypeptides in both myel...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200209)32:9<2653::AID-IMMU2653>3
更新日期:2002-09-01 00:00:00
abstract::Longitudinal studies on the kinetics of viral antigen specific CD8 T cell responses have led to a model whereby a relatively small subset of the primary effector CD8 T cells expanding after the first week of acute viral infection initiate a program of cell survival and differentiation into long lived memory T cells. T...
journal_title:European journal of immunology
pub_type: 评论,杂志文章
doi:10.1002/eji.200535516
更新日期:2005-11-01 00:00:00
abstract::MRL/MP-lpr/lpr mice are homozygous for the lpr mutation that results in the accumulation of phenotypically abnormal cells (CD3+CD4+CD8-) in all lymphoid issues. Although no major abnormalities in the T cell receptor repertoire expressed by such lpr cells have been reported, the lpr mutation is a major disease-accelera...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220432
更新日期:1992-04-01 00:00:00
abstract::CD30 is a costimulatory molecule of the TNF receptor superfamily, expressed on activated T and B cells. Previously, we have shown in a murine asthma model the crucial role of CD30 signaling for the development of this Th2-cell-mediated disease. In the present study, we investigated the role of CD30 in the maintenance ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200839004
更新日期:2009-07-01 00:00:00
abstract::TCR- but not CD2-triggered IL-2 production is p56(lck) dependent. To test the hypothesis that p59(fyn), a second src-family protein tyrosine kinase (PTK) expressed in T lymphocytes, might be an essential upstream component of the CD2 signaling pathway, we generated human (h) CD2 transgenic (tg) fyn(+/+) and fyn(-/-) m...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(2000012)30:12<3507::AID-IMMU3507
更新日期:2000-12-01 00:00:00
abstract::The purpose of this study was to obtain additional information on the mechanism by which interferon-gamma (IFN-gamma) is able to regulate gene expression in macrophages. The expression of the genes for class II histocompatibility I-A beta, tumor necrosis factor (TNF) and complement component C3 was assayed after treat...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830190621
更新日期:1989-06-01 00:00:00
abstract::Recently activated peripheral T cells treated with IL-2 for 4 days expressed Fas ligand (FasL)-mediated cytotoxicity. These IL-2-treated T cells had high nuclear expression of SP1 and NFAT, but lacked the Egr-2 and Egr-3 that could be induced by anti-CD3 stimulation and had been implicated in FasL gene activation. A m...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199911)29:11<3456::AID-IMM
更新日期:1999-11-01 00:00:00
abstract::MicroRNAs control developmental pathways and effector functions in immune cells. Previous studies have studied the role of microRNAs in natural killer (NK) cells. However, the mouse models of microRNA depletion used were nonNK-specific and only partially depleting, hampering the interpretation of the data obtained. To...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201546163
更新日期:2016-08-01 00:00:00
abstract::We here report the cDNA sequences of 11 new rat Ly49 genes with full and three with incomplete open reading frames. Although obtained from different inbred rat strains, these as well as six previously published cDNA represent non-allelic genes matching different loci in the Brown Norway (BN) rat genome, which is predi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425429
更新日期:2005-01-01 00:00:00
abstract::Hypoxia and glucose deprivation are often observed in the microenvironment surrounding solid tumors in vivo. However, how they interfere with MHC class I antigen processing and CD8(+) T-cell responses remains unclear. In this study, we analyzed the production of antigenic peptides presented by classical MHC class I in...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201545835
更新日期:2016-04-01 00:00:00
abstract::Among 15 anti-DNA antibody-producing hybridomas derived from a single NZB X NZW F1 mouse, an IgM and an IgG were shown to use the same VH gene of the Q52 family. Using a combination of two primers both consisting of a mixture of oligonucleotides (one complementary to the 5' end of VH segment and one to the 3' end of V...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220417
更新日期:1992-04-01 00:00:00
abstract::Reciprocal expression of CD45RA and CD45RO in human CD4+ T cells defines populations understood to be naive cells (CD45RA+CD45RO-) and memory cells (CD45RA-CD45RO+). We investigate two subsets of CD45RA-CD45RO+ CD4+ human T cells which differ by fourfold in their expression of the CD45RB isoform; one is CD45RBbright a...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830240536
更新日期:1994-05-01 00:00:00
abstract::Murine Thy-1+, TcR V gamma 3/V delta 1+ dendritic epidermal T cells (DETC) differ from most other T cell subsets by the absence of CD4 and CD8 antigens as well as the lack of CD5 expression. To see whether negativity for those antigens is an intrinsic feature of a given T cell population or if such triple-negative T c...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830240612
更新日期:1994-06-01 00:00:00
abstract::Bispecific antibodies binding to the TCR/CD3 complex and to a tumor-associated surface molecule can be used to target cytotoxic T lymphocytes against tumor cells. We reasoned that high-affinity binding to CD3 may reduce the efficiency of T cell stimulation and target the bispecific reagent to T cells rather than to tu...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200211)32:11<3102::AID-IMMU3102>
更新日期:2002-11-01 00:00:00
abstract::The contribution of specific antibodies (Ab) to successful clearance of Pneumocystis carinii from host pulmonary tissues has received increasing attention. Sera collected from diseased recombinase-activating gene (RAG)-1(-/-), TCRbetaxdelta(-/-), TCRbeta(-/-) and Abeta(-/-) mutants as well as from aerogenic parasite-e...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199908)29:08<2464::AID-IMM
更新日期:1999-08-01 00:00:00
abstract::The CD4 and CD8 coreceptor molecules on immature thymocytes participate in T cell repertoire selection. To examine more definitively the role of CD4 and CD8 in the negative and positive selection of immature thymocytes, we generated transgenic mice with elevated surface CD4 expression and mated them with mice expressi...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830220317
更新日期:1992-03-01 00:00:00
abstract::Bone marrow-derived macrophages were stained with a variety of monoclonal antibodies (mAb) with specificity for the mycobacterial heat shock protein (hsp) 60 or with specific rabbit antiserum raised against mycobacterial hsp 60. The mAb ML30 as well as the specific antiserum brightly stained bone marrow-derived macrop...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830210437
更新日期:1991-04-01 00:00:00
abstract::Twenty-seven B cell hybridomas derived from spleen cells of nonimmunized, 6-day-old BALB/c mice and previously characterized serologically were screened for VH-gene expression: hybridomas expressing the two most D-proximal VH-gene families, 7183 and QUPC 52 were over-represented in this sample. Strikingly, clones sero...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830170315
更新日期:1987-03-01 00:00:00
abstract::Maintenance of peripheral tolerance and inactivation of autoreactive T cells is based on a delicate balance between pro-inflammatory and protective cytokines that is poorly understood. We have here addressed how the local expression of the inflammatory cytokine TNF-alpha can impair peripheral tolerance and lead to aut...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200323328
更新日期:2003-05-01 00:00:00
abstract::Cholesterol- and sphingolipid-rich membrane microdomains termed lipid rafts appear to play a central role in B cell activation. In mature B cells, signaling through the B cell antigen receptor(BCR) is initiated from within rafts and leads to activation. In immature B cells, the BCR is excluded from rafts and signaling...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200112)31:12<3789::aid-immu3789>
更新日期:2001-12-01 00:00:00
abstract::Hypersensitivity to nickel (Ni) represents the most common manifestation of contact allergy in humans. The role of metal-specific T cells in this disease is well established, but the molecular interactions involved in their activation are poorly understood. We examined the T cell receptor (TCR) repertoire in T cells a...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270808
更新日期:1997-08-01 00:00:00
abstract::Influenza virus infection is an important cause of severe asthma exacerbations, but it remains unclear how a Th1-mediated antiviral response triggers a prototypical Th2 disease. We investigated CD4+ T cells and group 2 innate lymphoid cells (ILC2s) in influenza virus-infected mice. We found that ILC2s accumulated in t...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201747421
更新日期:2019-01-01 00:00:00
abstract::The transcription factor c-Maf is critical for IL-4 production and the development of Th2 cells, which promote humoral immunity and protect against extracellular parasites. Yet, little else is known of c-Maf function in CD4 cells. Here, we identify a novel role for c-Maf in regulating susceptibility to apoptosis. Over...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636979
更新日期:2007-10-01 00:00:00
abstract::Durch Pflanzenkrankheiten entstehen weltweit hohe Ernteverluste. Eine der häufigsten Infektionen in der Familie der Kreuzb&luml;tengewächse wird durch den Pilz Plasmodiophora brassicae verursacht. Die Krankheit äußert sich in Form von Wurzeltumoren, den "Kohlherniegallen". Da es auf verseuchten Böden zu hohen Ernteaus...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(sici)1521-415x(200001)30:1<14::aid-biuz14
更新日期:2000-01-01 00:00:00
abstract::A monoclonal antibody (mAb), 2D1(IgM), was identified for its anti-proliferative effect on human T leukemia cell line, SUP-T13. The cells bound with 2D1 showed DNA ladder patterns of oligonucleosomes, demonstrating apoptosis. Peripheral mononuclear cells activated by phytohemagglutinin or OKT3 induced expression of 2D...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230831
更新日期:1993-08-01 00:00:00
abstract::At least two subsets of CD4+ T helper cell lymphocytes termed Th1 and Th2 exist in the mouse and probably in humans. They are characterized by the secretion of different lymphokines and by their functional behavior. Dysregulated expansion of one or the other subset may be one reason for the development of certain dise...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830230805
更新日期:1993-08-01 00:00:00
abstract::Secretion of proinflammatory mediators by activated macrophages plays an important role in the immune response to Trypanosoma cruzi. We have previously reported that AgC10, a glycosylphosphatidylinositol-anchored mucin from T. cruzi, inhibits TNF secretion by activated macrophages (de Diego, J., Punzon, C., Duarte, M....
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200324660
更新日期:2004-06-01 00:00:00
abstract::Two out of five murine IgG3 anti-trinitrophenyl (TNP) monoclonal antibodies (mAb) obtained either by immunization with TNP-keyhole limpet hemocyanin (KLH) (CB1, CB5, CB6 and 4H10) or with dinitrophenyl-lipopolysaccharide (9A6), exhibited anti-IgG rheumatoid factor (RF) activity (CB6 and 4H10). The anti-IgG activity of...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830191123
更新日期:1989-11-01 00:00:00