Abstract：
:The number of possible T cell activation outcomes resulting from T cell receptor (TCR) engagement suggests that the TCR is able to differentially activate a myriad of signaling pathways depending on the nature of the stimulus. The complex structural organization of the TCR itself could underlie this diversity of responses. Assembly and stoichiometric studies have helped us to shed some light on the initiation of TCR signaling. The TCR is composed of TCR and CD3 dimers. Changes in the interaction between CD3 subunits within the CD3 dimers and in the interaction of these dimers with the TCR heterodimer could be the triggering mechanism that initiates the first activation events. One of the hallmarks of these early changes in TCR conformation is the induced recruitment of the adapter protein Nck to a proline-rich sequence of the cytoplasmic tail of CD3epsilon, but there may be others. According to our most recent observations, the TCR is organized in pre-existing clusters within plasma membrane microdomains, exhibiting a complexity above and beyond that of dimer composition complexity. How the presence of TCR in clusters influences TCR avidity and propagation of TCR signals is something that has yet to be investigated.
journal_name
Immunol Revjournal_title
Immunological reviewsauthors
Alarcón B,Gil D,Delgado P,Schamel WWdoi
10.1034/j.1600-065x.2003.00017.xkeywords:
subject
Has Abstractpub_date
2003-02-01 00:00:00pages
38-46eissn
0105-2896issn
1600-065Xpii
017journal_volume
191pub_type
杂志文章,评审abstract：:We have discussed four specific models which provide different kinds of information about the requirements for T cell activation. The first utilized a CTL clone designated L3, which is reactive specifically with Ld alloantigen, to study the involvement of the associative recognition structure Lyt-2 in cytolysis. The a...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1984.tb01105.x
更新日期：1984-10-01 00:00:00
abstract：:In the non-obese diabetic (NOD) mouse, a Th1-biased autoimmune response arises spontaneously against glutamic acid decarboxylase, concurrent with the onset of insulitis. Subsequently, Th1-type autoreactivity spreads intra- and intermolecularly to other beta-cell autoantigens (beta CAAs), suggesting that a spontaneous ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1998.tb01214.x
更新日期：1998-08-01 00:00:00
abstract：:IgG dimers occurring in therapeutic Ig preparations have been characterized as Id-anti-Id, in that the sites of interaction are localized to the distal tips of the Fab arms. The observation that such dimers are prevalent in Ig or Igi.v. prepared from large plasma pools, but absent in preparations from a single individ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1994.tb00861.x
更新日期：1994-06-01 00:00:00
abstract：:Germinal centers (GCs) are sites of rapid B-cell proliferation and somatic mutation. These ovoid structures develop within the center of follicles and grow to a stereotypic size. The cell migration and interaction dynamics underlying GC B-cell selection events are currently under intense scrutiny. In recent study, we ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2012.01114.x
更新日期：2012-05-01 00:00:00
abstract：:The epithelium of the human small intestine contains a large population of intraepithelial cytolytic alphabeta T-cell receptor (TCR) CD8 alpha beta T lymphocytes (IE-CTLs), whose main role is to sustain epithelial integrity by rapidly eliminating infected and damaged cells. In mouse, the recognition of inducible/modif...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2006.00481.x
更新日期：2007-02-01 00:00:00
abstract：:Tolerance for self has appeared incomplete for many self antigens. We have obtained experimental evidence that both for self heat shock proteins and T cell receptor V-gene products, reactive T cells are part of the normal immune repertoire. Furthermore, it has become apparent that stimulation of T cell responsiveness ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1996.tb00899.x
更新日期：1996-02-01 00:00:00
abstract：:Almost four decades of research into the role of human leukocyte antigen-B27 (HLA-B27) in susceptibility to spondyloarthritis has yet to yield a convincing answer. New results from an HLA-B27 transgenic rat model now demonstrate quite convincingly that CD8(+) T cells are not required for the inflammatory phenotype. Di...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2009.00865.x
更新日期：2010-01-01 00:00:00
abstract：:The discovery of the autoimmune regulator (AIRE) protein and the delineation of its critical contributions in the establishment of central immune tolerance has significantly expanded our understanding of the immunological mechanisms that protect from the development of autoimmune disease. The parallel identification a...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12714
更新日期：2019-01-01 00:00:00
abstract：:The structure and amino acid diversity of the T-cell receptor (TCR), similar in nature to that of Fab portions of antibodies, would suggest that these proteins have a nearly infinite capacity to recognize antigen. Yet all currently defined native T cells expressing an α and β chain in their TCR can only sense antigen ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12327
更新日期：2015-09-01 00:00:00
abstract：:One of the fundamental aspects of the innate immune system is its capacity to discriminate between self and non-self or altered self, and to quickly respond by eliciting effector mechanisms that act in concert to restore normalcy. This capacity is determined by a set of evolutionarily conserved pattern recognition rec...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2011.01045.x
更新日期：2011-09-01 00:00:00
abstract：:The response to pathogens and damage in plants and animals involves a series of carefully orchestrated, highly evolved, molecular mechanisms resulting in pathogen resistance and wound healing. In metazoans, damage- or pathogen-associated molecular pattern molecules (DAMPs, PAMPs) execute precise intracellular tasks an...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2007.00579.x
更新日期：2007-12-01 00:00:00
abstract：:Schistosomiasis is a serious global helminthic disease, in which the main immunopathology consists of a granulomatous and fibrosing reaction against tissue-trapped parasite eggs. The severity of this inflammatory process, the product of a CD4(+) T-cell-mediated immune response against parasite egg antigens, is, howeve...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2004.00197.x
更新日期：2004-10-01 00:00:00
abstract：:In this review we address questions which must be considered if better attempts are to be made to treat all persons presently infected with human immunodeficiency virus (HIV). There are thirty million people in the world presently living with HIV, only 10% of whom are likely to be able to access currently available dr...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1999.tb01337.x
更新日期：1999-08-01 00:00:00
abstract：:A successful immune response depends on the migration of lymphocytes into lymph nodes or inflamed tissues where they make contact with antigen-presenting cells. We are interested in how one member of the integrin family, leukocyte function-associated antigen-1 (LFA-1), controls the function and, in particular, the mig...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2007.00537.x
更新日期：2007-08-01 00:00:00
abstract：:In addition to its effects on sexual differentiation and reproduction, estrogen has important impact on the immune system and on bone. It has also been evident that the effects of estrogen on bone to a large extent are mediated via its action on immune cells. Estrogen has a dichotomous impact on the immune system by d...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2005.00326.x
更新日期：2005-12-01 00:00:00
abstract：:T cells (derived from peripheral blood lymphocytes [PBL], lymph nodes or tumor tissues and restimulated with autologous tumor cells and expanded in interleukin-2 [IL-2]), when cloned, produce three functional classes of clone. Class I T-cell clones exhibit the phenotype of alpha/beta cytotoxic T lymphocytes (CD3+, CD8...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1990.tb00803.x
更新日期：1990-08-01 00:00:00
abstract：:Although T-cell clones bearing T-cell receptors with high affinity for self-peptide major histocompatibility complex (MHC) products are generally eliminated in the thymus (recessive tolerance), the peripheral T-cell repertoire remains strongly biased toward self-peptide MHC complexes and includes autoreactive T cells....
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2005.00247.x
更新日期：2005-04-01 00:00:00
abstract：SUMMARY:This volume covers many topics in the field of T-cell costimulation. The need for such a volume is testament to the growth of the field. From its beginning as a concept in the 1980s, we have now progressed to the point where many molecules now have functionally defined roles in T-cell costimulation. In addition...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2009.00780.x
更新日期：2009-05-01 00:00:00
abstract：:Superantigens (SAGs) are a class of disease-causing and immunostimulatory proteins of bacterial or viral origin that activate T cells by binding to the V beta domain of the T-cell antigen receptor (TCR). The three-dimensional structure of the complex between a TCR beta chain (mouse V beta 8.2-J beta 2.1-C beta 1) and ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1998.tb01196.x
更新日期：1998-06-01 00:00:00
abstract：:Regulatory T cells (Tregs) and the PD-1: PD-ligand (PD-L) pathway are both critical to terminating immune responses. Elimination of either can result in the breakdown of tolerance and the development of autoimmunity. The PD-1: PD-L pathway can thwart self-reactive T cells and protect against autoimmunity in many ways....
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2010.00923.x
更新日期：2010-07-01 00:00:00
abstract：:Inflammasomes are the central signaling hubs of the inflammatory response. They process cytosolic evidence of infection, cell damage, or metabolic disturbances, and elicit a pro-inflammatory response mediated by members of the interleukin-1 family of cytokines and pyroptotoic cell death. On the molecular level, this i...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12611
更新日期：2018-01-01 00:00:00
abstract：:The preceding paragraphs describe several uses of specific antibodies to IL-1. Standard radioimmunoassays and ELISA procedures were developed with demonstrated utility in studies attempting to quantitate the cytokine in cell culture fluids. In part, antibody-based assays circumvent the problems associated with bioassa...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1991.tb00584.x
更新日期：1991-02-01 00:00:00
abstract：:The characterization of the microenvironment of human tumors led to the description of tertiary lymphoid structures (TLS) characterized by mature dendritic cells in a T-cell zone adjacent to B-cell follicle including a germinal center. TLS represent sites of lymphoid neogenesis that develop in most solid cancers. Anal...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12405
更新日期：2016-05-01 00:00:00
abstract：:Major histocompatibility complex class II (MHCII) molecules drive the development, activation and homeostasis of CD4* T-helper cells. They play a central role in key processes of the adaptive immune system, such as the generation of T-cell-mediated immune responses, the regulation of antibody production and the develo...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1034/j.1600-065x.2000.17813.x
更新日期：2000-12-01 00:00:00
abstract：:The age-associated changes in humoral immunity affect the quality more than the quantity of the antibody response. Changes in the quality of the antibody response with age include shifts in antibody specificities from foreign to autoantigens, in antibody isotypes from IgG to IgM, in antibody affinities from high to lo...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1997.tb01032.x
更新日期：1997-12-01 00:00:00
abstract：:Studies over the last decade uncovered overlapping niches for hematopoietic stem cells (HSCs), multipotent progenitor cells, common lymphoid progenitors, and early B cell progenitors. HSC and lymphoid niches are predominantly composed by mesenchymal progenitor cells (MPCs) and by a small subset of endothelial cells. N...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12749
更新日期：2019-05-01 00:00:00
abstract：:The infiltration of human tumors by T cells is a common phenomenon, and over the past decades, it has become increasingly clear that the nature of such intratumoral T-cell populations can predict disease course. Furthermore, intratumoral T cells have been utilized therapeutically in clinical studies of adoptive T-cell...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12140
更新日期：2014-01-01 00:00:00
abstract：:Macrophages play essential roles in tissue homeostasis, pathogen elimination, and tissue repair. A defining characteristic of these cells is their ability to efficiently adapt to a variety of abruptly changing and complex environments. This ability is intrinsically linked to a capacity to quickly alter their transcrip...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12213
更新日期：2014-11-01 00:00:00
abstract：:Chronic inflammation in the tumor microenvironment and evasion of the antitumor effector immune response are two of the emerging hallmarks required for oncogenesis and cancer progression. The innate immune system not only plays a critical role in perpetuating these tumor-promoting hallmarks but also in developing anti...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12464
更新日期：2016-11-01 00:00:00
abstract：:Human T cell hybridomas were generated by several techniques and the supernatants generated were screened for activity on human B cells. Three general activities were noted; B cell proliferation factor ( BCPF ), B cell differentiation factor (BCDF), and an IgA isotype-specific helper factor. BCPF acts on B cells to in...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1984.tb00479.x
更新日期：1984-04-01 00:00:00
