Abstract:
:The present paper describes a comparative analysis of light chains associated with primary and secondary IgM, as well as with secondary IgG antibodies to fluorescein, undertaken in order to explore the relationship between light chain somatic hypermutation and the isotype switch. The data reveal a disparity in the frequency of somatic hypermutation of secondary IgM heavy versus light chains. Among 20 secondary IgM light chains, a mutation frequency of 1/777 nucleotides was defined. In contrast, our previous analysis of the heavy chains of these molecules had identified a mutation frequency of 1/129. Among 17 IgG-derived light chains, obtained from animals killed at the same time point as those from which the secondary IgM antibodies were obtained, we measured a mutation frequency of 1/77. Finally, analysis of 20 light chains derived from primary IgM antibodies revealed a mutation frequency of only 1/1192 nucleotides. These data demonstrate that, prior to the class switch, light chain mutation occurs at a frequency considerably lower than that measured for the associated heavy chain gene. Six additional apparent mutations in the secondary IgM antibody 95B3 were all shared with a set of IgG antifluorescein antibodies belonging to the Vkappa 34 family. It is suggested that these light chains represent the products of a previously uncharacterized germ line gene.
journal_name
Immunol Cell Bioljournal_title
Immunology and cell biologyauthors
van der Keyl H,Gellad ZF,Owen JAdoi
10.1046/j.1440-1711.2000.00903.xsubject
Has Abstractpub_date
2000-06-01 00:00:00pages
224-37issue
3eissn
0818-9641issn
1440-1711pii
icb903journal_volume
78pub_type
杂志文章abstract::Cancer immunosurveillance representing, till recently, the explanatory framework relating cancer and the immune system, does not convincingly explain tumor escape. At the beginning of the decade, a new theory emerged, namely the immunoediting theory, and it comprehensively defines the role of the immune system in carc...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/sj.icb.7100006
更新日期:2007-01-01 00:00:00
abstract::CD8+ T lymphocytes are key effectors in the control of viral diseases and some tumours. In general, the majority of CD8+ T cells recognize a few immunodominant epitopes, but in some circumstances, subdominant specificities may be more relevant as targets for vaccines or immunotherapy. Epstein-Barr virus (EBV)-associat...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/sj.icb.7100083
更新日期:2007-10-01 00:00:00
abstract::CD45 (lymphocyte common antigen) is a receptor-linked protein tyrosine phosphatase that is expressed on all leucocytes, and which plays a crucial role in the function of these cells. On T cells the extracellular domain of CD45 is expressed in several different isoforms, and the particular isoform(s) expressed depends ...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/icb.1997.68
更新日期:1997-10-01 00:00:00
abstract::The evolutionarily conserved catabolic process of autophagy involves the degradation of cytoplasmic components through lysosomal enzymes. Basal levels of autophagy maintain cellular homeostasis and under stress conditions high levels of autophagy are induced. It is often under such stress conditions that high levels o...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/icb.2014.85
更新日期:2015-01-01 00:00:00
abstract::Antigen presentation by enterocytes isolated from the rat small bowel was studied by using T cell proliferation, and immunoregulatory function in an antigen-driven culture system, as indicator systems. Lymph node T cells obtained from rats immunized with ovalbumin (OA) failed to divide when cultured for 4 days in the ...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1990.52
更新日期:1990-12-01 00:00:00
abstract::Peroxidase-conjugated anti-surface immunoglobulin (sIg) was used quantitatively to monitor endocytosis of crosslinked sIg on murine B lymphocytes. The role of biochemical second messengers in the initiation of endocytosis was assessed by employing several inhibitors. A novel peroxidase detection system was used and te...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1993.1
更新日期:1993-02-01 00:00:00
abstract::Numerous studies have associated carriage of HLA-DRB1*1501, DQA1*0102 and DQB1*0602 (DR15, DQ6) with dominant resistance to type 1 diabetes and have concluded that one or more of the component HLA class II molecules mediate this effect. Mechanisms for MHC class II-mediated resistance to diabetes have been proposed fro...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1046/j.1440-1711.2001.01043.x
更新日期:2001-12-01 00:00:00
abstract::Listeria monocytogenes is the causative agent of infections like sepsis and meningitis, especially in immunocompromised hosts. Human macrophages are able to phagocytose and digest L. monocytogenes but IL-4 prevents human macrophages from killing the bacteria, the mechanisms of which are unknown. In the present study, ...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1711.2003.01196.x
更新日期:2003-12-01 00:00:00
abstract::Mast cells (MC) can undergo significant changes in number and phenotype; these alterations result in the differential expression of growth factors and cytokines. Kit ligand (KL; stem cell factor) is produced by mesenchymal cells, and in the liver by biliary epithelial cells. Recent studies suggest that KL, and its rec...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1111/j.1440-1711.2005.01368.x
更新日期:2005-12-01 00:00:00
abstract::Tamm-Horsfall protein (THP) binds strongly to complement 1q (C1q), a key component of the classical complement pathway. The goals of this study were to determine whether THP altered the activation of the classical complement pathway and whether the carbohydrate portion of THP was involved in this glycoprotein's bindin...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1111/j.1440-1711.2006.01434.x
更新日期:2006-08-01 00:00:00
abstract::Antibodies can have a protective but non-essential role in natural chlamydial infections dependent on antigen specificity and antibody isotype. IgG is the dominant antibody in both male and female reproductive tract mucosal secretions, and is bi-directionally trafficked across epithelia by the neonatal Fc receptor (Fc...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.2013.110
更新日期:2014-05-01 00:00:00
abstract::Arginase-1 (Arg-1)-expressing M2-like macrophages are associated with Th2-skewed immune responses, allergic airway pathology, ectopic B16 melanoma cancer growth in murine models, and can be induced by Oncostatin M (OSM) transient overexpression in vivo. Here, we compare OSM to the gp130-cytokine IL-6 in mediating macr...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1111/imcb.1035
更新日期:2018-03-01 00:00:00
abstract::Intravenous (i.v.) immunization of mice with recombinant vaccinia viruses stimulated the highest antibody and cytotoxic T lymphocyte (CTL) responses when i.v., intraperitoneal (i.p.), intranasal (i.n.), footpad (f.p.) and tail scarification (t.s.) routes were compared. Intraperitoneal immunization of mice resulted in ...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1989.48
更新日期:1989-10-01 00:00:00
abstract::The cellular effects of biodiesel emissions particulate matter (BDEP) and petroleum diesel emissions particulate matter (PDEP) were compared using a human airway cell line, A549. At concentrations of 25 microg/ml, diesel particulate matter induced the formation of multinucleate cells. In cells treated with a mixture o...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/sj.icb.7100109
更新日期:2007-11-01 00:00:00
abstract::Over the past few years a great deal of research has examined how T cell-dependent immune responses are initiated and subsequently regulated. Ligation of the TCR with an antigenic peptide bound to an MHC protein on a professional APC provides the crucial antigen-specific stimulus required for T cell activation. Intera...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1046/j.1440-1711.1999.00795.x
更新日期:1999-02-01 00:00:00
abstract::Retinoic acid (RA) in the steady state enhances induction of Foxp3(+) regulatory T (Treg) cells and inhibits differentiation of Th1 and Th17 cells, thereby maintaining tolerance, but can in inflammatory conditions promote effector Th1 and Th17 cells that mediate inflammation. IL-17-producing γδ T cells have recently b...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.2016.39
更新日期:2016-09-01 00:00:00
abstract::This study demonstrates that a syngeneic specific cytotoxic T lymphocyte (CTL) response to a class I major histocompatibility complex (MHC) positive tumour requires dual processing and recognition of tumour antigens. One type of antigen is processed and expressed in association with class I MHC at the surface of intac...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1993.36
更新日期:1993-08-01 00:00:00
abstract::The immune system has developed mechanisms to detect and initiate responses to a continual barrage of immunological challenges. Dendritic cells (DC), a heterogeneous population of leucocytes, play a major role as immunosurveillance agents. To accomplish this function, DC are equipped with highly efficient mechanisms t...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1111/j.1440-1711.2004.01216.x
更新日期:2004-02-01 00:00:00
abstract::The differentiation of myeloid cells into macrophages and granulocytes is accompanied by marked changes in adhesive phenotype. Here we seek to understand the regulation of expression and functionality of the VLA-4 (alpha 4 beta 1), LPAM-1 (alpha 4 beta 7) and HML-1 (alpha E beta 7) integrins on monocytes/macrophages a...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1996.67
更新日期:1996-10-01 00:00:00
abstract::A hypothesis if formulated for the mode of action of the 'atopy gene': the gene(s) causing an increased tendency to mount an IgE immune response to trivial environmental antigens. It is postulated that some antigens are not efficiently transported to the lymphoid organs, the location of the 'eutopic' immune system; mi...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/icb.1996.28
更新日期:1996-04-01 00:00:00
abstract::Barely 60 years ago, the thymus was considered to be a vestigial organ with no known function or just a graveyard for dying lymphocytes. Now, the thymus and its cells cover a vast area of immunology, genetics and epigenetics relating to medicine, including inflammation, infection, vaccination, dysbiosis, immunodeficie...
journal_title:Immunology and cell biology
pub_type: 传,历史文章,信件
doi:10.1111/imcb.12220
更新日期:2019-03-01 00:00:00
abstract::Neospora caninum is a coccidian parasite causative of clinical infections in a wide range of animal hosts. The maturation and activation of splenic conventional dendritic cells (cDCs) and plasmacytoid dendritic cells (pDCs) were studied here in BALB/c mice challenged intraperitoneal with N. caninum tachyzoites. The nu...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.2009.65
更新日期:2010-01-01 00:00:00
abstract::This paper reports the production and characterization of three monoclonal antibodies (mAb) recognizing ovine vascular cell adhesion molecule-1 (VCAM-1). The mAb were raised against sheep umbilical vein endothelial cells (ShUVEC) and flow cytometric analysis demonstrated that one mAb, QE4G9, was cross-reactive with hu...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1997.85
更新日期:1997-12-01 00:00:00
abstract::T lymphocytes are characterized by the use of structurally diverse TCR. The discovery of subsets of canonical T cells that have structurally homogeneous TCR presents an enigma: What antigens do these T cells recognize, and how does their antigen specificity relate to their functions? One subset of canonical T cells is...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1111/j.0818-9641.2004.01257.x
更新日期:2004-06-01 00:00:00
abstract::Latex beads, 250 and 610 nm in diameter, and parapox virus isolated from ecthyma in sheep, were injected into intestinal loops containing either jejunal or ileal Peyer's patches (PP) of 3-4 week old calves. Uptake of latex and parapox virus was restricted to the ileal PP, 30-60 min after injection. The latex beads see...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1988.35
更新日期:1988-08-01 00:00:00
abstract::The possible role and influence of tumour necrosis factor-alpha (TNF-alpha) in the human mixed lymphocyte culture (MLC) reaction was investigated. Polyclonal rabbit sera to recombinant human-TNF-alpha (rhTNF-alpha) consistently inhibited the MLC, and this could be reversed by simultaneous addition of rhTNF-alpha to th...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/icb.1992.15
更新日期:1992-04-01 00:00:00
abstract::Upon their activation, CD4 T cells can differentiate into distinct T helper cell subsets with specialised functions. Different T helper cell subsets produce specific cytokines that mediate beneficial and sometimes detrimental effects, depending on the infection or disease setting. CD4 T-cell priming relies on signals ...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/icb.2015.45
更新日期:2015-10-01 00:00:00
abstract::There is a logarithmic increase in the cost and complexity of the research and development process when transitioning a promising candidate vaccine from the laboratory into the clinic. Managing complex development programs involving people from diverse technical, cultural and geographical backgrounds is a specialised ...
journal_title:Immunology and cell biology
pub_type: 杂志文章,评审
doi:10.1038/icb.2009.30
更新日期:2009-07-01 00:00:00
abstract::Mycobacterium tuberculosis uses numerous mechanisms to avoid elimination by the infected host. In this study, we investigated the possibility whether, similar to other pathogens, M. tuberculosis exploits natural CD4+ CD25+ T-regulatory cells (Treg) to suppress the effector function of responding host lymphocytes, thus...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1111/j.1440-1711.2006.01460.x
更新日期:2006-10-01 00:00:00
abstract::The identification of the genes that make up rearranged immunoglobulin genes is critical to many studies. For example, the enumeration of mutations in immunoglobulin genes is important for the prognosis of chronic lymphocytic leukemia, and this requires the accurate identification of the germline genes from which a pa...
journal_title:Immunology and cell biology
pub_type: 杂志文章
doi:10.1038/sj.icb.7100144
更新日期:2008-02-01 00:00:00