Abstract:
:The presence of intestinal intra-epithelial lymphocytes (IEL) has been appreciated for over 100 years. However, until recently, the IEL were thought to be simply another specialized component of the gut-associated lymphoid tissue (GALT), sharing the same origin as lymphocytes found in other GALT compartments such as the lamina propria, the Peyer's patches, and the mesenteric lymph nodes. While the IEL remain functionally enigmatic, over the last ten years increasing evidence, originally based on the phenotypic complexity of IEL, has led to the conclusion that the intestinal epithelium comprises a distinct and unique lymphoid compartment within the organism. The recent discovery that the intestinal epithelium is a primary T lymphopoietic organ provides obvious potential explanations for the phenotypic peculiarities of IEL. The following discussion reviews the experiments that established that the intestinal epithelium is a site of T cell development and selection, and the discussion correlates phenotypic and functional heterogeneity of IEL within this context.
journal_name
Annu Rev Immunoljournal_title
Annual review of immunologyauthors
Poussier P,Julius Mdoi
10.1146/annurev.iy.12.040194.002513subject
Has Abstractpub_date
1994-01-01 00:00:00pages
521-53eissn
0732-0582issn
1545-3278journal_volume
12pub_type
杂志文章,评审abstract::CD45 is one of the most abundant leukocyte cell surface glycoproteins and is expressed exclusively upon cells of the hematopoietic system. Different isoforms of CD45 are generated by alternative splicing and are expressed in cell type-specific patterns on functional subpopulations of lymphocytes. In a major advance, C...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.12.040194.000505
更新日期:1994-01-01 00:00:00
abstract::The immune system is composed of single cells, and its function is entirely dependent on the capacity of these cells to traffic, localize within tissues, and interact with each other in a precisely coordinated fashion. There is growing evidence that the large families of chemokines and chemokine receptors provide a fl...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.18.1.593
更新日期:2000-01-01 00:00:00
abstract::A host has two methods to defend against pathogens: It can clear the pathogens or reduce their impact on health in other ways. The first, resistance, is well studied. Study of the second, which ecologists call tolerance, is in its infancy. Tolerance measures the dose response curve of a host's health in reaction to a ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-020711-075030
更新日期:2012-01-01 00:00:00
abstract::The innate immune system relies on its capacity to rapidly detect invading pathogenic microbes as foreign and to eliminate them. The discovery of Toll-like receptors (TLRs) provided a class of membrane receptors that sense extracellular microbes and trigger antipathogen signaling cascades. More recently, intracellular...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.021908.132715
更新日期:2009-01-01 00:00:00
abstract::The gastrointestinal tract harbors numerous commensal bacteria, referred to as the microbiota, that benefit host health by digesting dietary components and eliminating pathogens. The intestinal microbiota maintains epithelial barrier integrity and shapes the mucosal immune system, balancing host defense and oral toler...
journal_title:Annual review of immunology
pub_type: 杂志文章
doi:10.1146/annurev-immunol-070119-115104
更新日期:2020-04-26 00:00:00
abstract::Recent structural information for complexes of cytokine receptor ectodomains bound to their ligands has significantly expanded our understanding of the macromolecular topology and ligand recognition mechanisms used by our three principal shared cytokine signaling receptors-gp130, gamma(c), and beta(c). The gp130 famil...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.24.021605.090616
更新日期:2009-01-01 00:00:00
abstract::The complement system is an evolutionarily ancient key component of innate immunity required for the detection and removal of invading pathogens. It was discovered more than 100 years ago and was originally defined as a liver-derived, blood-circulating sentinel system that classically mediates the opsonization and lyt...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-042617-053245
更新日期:2018-04-26 00:00:00
abstract::Only 5 to 10% of immunocompetent humans are susceptible to tuberculosis, and over 85% of them develop the disease exclusively in the lungs. Human immunodeficiency virus (HIV)-infected humans, in contrast, can develop systemic disease that is more quickly lethal. This is in keeping with other evidence showing that susc...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.22.012703.104635
更新日期:2004-01-01 00:00:00
abstract::NK cells sit at the crossroads of innate and adaptive immunity and help coordinate tumor immunosurveillance and the immune response against pathogens. Balancing signals to NK cell precursors is crucial for their early development, when transcription factors compete to specify the different lymphocyte subsets. Despite ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.24.021605.090700
更新日期:2006-01-01 00:00:00
abstract::While still incomplete, the first data concerning the biochemistry of T cell receptor-ligand interactions in cell-free systems seem to have considerable predictive value regarding whether a T cell response is strong or weak or suppressive. This data will help considerably in elucidating the mechanisms behind T cell re...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.16.1.523
更新日期:1998-01-01 00:00:00
abstract::Major histocompatibility complex (MHC) class II molecules are heterodimeric cell surface proteins that are critically important for the development and function of cells in the immune system. In particular, the maturation of CD4+ T cells is dependent on the expression of MHC class II molecules on thymic epithelium, wh...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.13.040195.002221
更新日期:1995-01-01 00:00:00
abstract::The nonobese diabetic (NOD) mouse is a model of human autoimmune insulin-dependent diabetes mellitus. The NOD mouse also serves as a model for studying complex polygenic diseases because at least fourteen different loci are linked to disease development. The first Idd locus recognized, Idd1, is linked to the major his...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.13.040195.001143
更新日期:1995-01-01 00:00:00
abstract::During the last several years, the mechanism of IFN gamma-dependent signal transduction has been the focus of intense investigation. This research has recently culminated in the elucidation of a comprehensive molecular understanding of the events that underlie IFN gamma-induced cellular responses. The structure and fu...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.15.1.563
更新日期:1997-01-01 00:00:00
abstract::Development of the acquired immune response is dependent on the signaling of CD40 by its ligand, CD154. These molecules govern both the magnitude and quality of humoral- and cell-mediated immunity. A litany of studies have conclusively documented that blockade of this ligand-receptor pair can prevent, and also interve...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.22.012703.104533
更新日期:2004-01-01 00:00:00
abstract::The diverse microbial populations constituting the intestinal microbiota promote immune development and differentiation, but because of their complex metabolic requirements and the consequent difficulty culturing them, they remained, until recently, largely uncharacterized and mysterious. In the last decade, deep nucl...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-032713-120238
更新日期:2015-01-01 00:00:00
abstract::During alphabeta T cell development, cells diverge into alternate CD4 helper and CD8(+) cytotoxic T cell lineages. The precise correlation between a T cell's CD8 and CD4 choice and its TCR specificity to class I or class II MHC was noted more than 20 years ago, and establishing the underlying mechanism has remained a ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.25.022106.141715
更新日期:2010-01-01 00:00:00
abstract::Mast cells have existed long before the development of adaptive immunity, although they have been given different names. Thus, in the marine urochordate Styela plicata, they have been designated as test cells. However, based on their morphological characteristics (including prominent cytoplasmic granules) and mediator...
journal_title:Annual review of immunology
pub_type: 杂志文章
doi:10.1146/annurev-immunol-071719-094903
更新日期:2020-04-26 00:00:00
abstract::The epithelial architecture of the thymus fosters growth, differentiation, and T cell receptor repertoire selection of large numbers of immature T cells that continuously feed the mature peripheral T cell pool. Failure to build or to maintain a proper thymus structure can lead to defects ranging from immunodeficiency ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.26.021607.090408
更新日期:2008-01-01 00:00:00
abstract::The signaling lymphocyte activation molecule (SLAM)-associated protein, SAP, was first identified as the protein affected in most cases of X-linked lymphoproliferative (XLP) syndrome, a rare genetic disorder characterized by abnormal responses to Epstein-Barr virus infection, lymphoproliferative syndromes, and dysgamm...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-030409-101302
更新日期:2011-01-01 00:00:00
abstract::Our understanding of the X-linked lymphoproliferative syndrome (XLP) has advanced significantly in the last two years. The gene that is altered in the condition (SAP/SH2D1A) has been cloned and its protein crystal structure solved. At least two sets of target molecules for this small SH2 domain-containing protein have...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.19.1.657
更新日期:2001-01-01 00:00:00
abstract::In contrast to T cell receptors, signal transducing cell surface membrane molecules involved in the regulation of responses by cells of the innate immune system employ structures that are encoded in the genome rather than generated by somatic recombination and that recognize either classical MHC-I molecules or their s...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.20.100301.064812
更新日期:2002-01-01 00:00:00
abstract::NF-kappa B is a ubiquitous transcription factor. Nevertheless, its properties seem to be most extensively exploited in cells of the immune system. Among these properties are NF-kappa B's rapid posttranslational activation in response to many pathogenic signals, its direct participation in cytoplasmic/nuclear signaling...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.12.040194.001041
更新日期:1994-01-01 00:00:00
abstract::Analysis of cytokine mRNA and protein in rheumatoid arthritis tissue revealed that many proinflammatory cytokines such as TNF alpha, IL-1, IL-6, GM-CSF, and chemokines such as IL-8 are abundant in all patients regardless of therapy. This is compensated to some degree by the increased production of anti-inflammatory cy...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.14.1.397
更新日期:1996-01-01 00:00:00
abstract::During the last decade the immunoglobulin J chain has indeed come of age. The amino-acid sequence has been determined for the mouse and human polypeptides, and the data obtained have established the uniqueness of the primary structure and its high degree of conservation in vertebrates. The biosynthesis of J chain has ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.03.040185.002233
更新日期:1985-01-01 00:00:00
abstract::This article outlines my early start in medicine, a late start in immunology research, and my efforts to integrate the two activities. I first describe some of the background information, excitement, and implications of the recognition of T and B cells as separate but functionally intertwined arms of the adaptive immu...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-030409-101248
更新日期:2010-01-01 00:00:00
abstract::The discovery of new functions for the original B7 family members, together with the identification of additional B7 and CD28 family members, have revealed new ways in which the B7:CD28 family regulates T cell activation and tolerance. B7-1/B7-2:CD28 interactions not only promote initial T cell activation but also reg...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.23.021704.115611
更新日期:2005-01-01 00:00:00
abstract::T and B cells share a common somatic gene rearrangement mechanism for assembling the genes that code for their antigen receptors; they also have developmental pathways with many parallels. Shared usage of basic helix-loop-helix E proteins as transcriptional drivers underlies these common features. However, the transcr...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev-immunol-032712-100024
更新日期:2014-01-01 00:00:00
abstract::It is possible to create mice in which a planned alteration has been introduced at a specific locus in the genome. The planned alteration is first introduced into the genome of mouse embryonic stem (ES) cells in tissue culture. This is accomplished by homologous recombination between the targeted genomic locus and DNA...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.iy.10.040192.003421
更新日期:1992-01-01 00:00:00
abstract::B lymphopoiesis is regulated by multiple signals from stromal cell contact, soluble cytokines, antigen, and T helper cells. In vitro and biochemical experiments have implicated tyrosine kinases as key components of many of these signaling pathways. Genetic analysis of the role of these tyrosine kinases has been facili...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.14.1.131
更新日期:1996-01-01 00:00:00
abstract::HTLV-I infection is causally associated with a variety of human diseases including leukemia/lymphoma, myelopathy, uveitis, and arthropathy. Tax protein of HTLV-I, which is considered oncogenic, binds to transcription factors or other cytoplasmic cellular molecules involved in the fundamental cell function and thereby ...
journal_title:Annual review of immunology
pub_type: 杂志文章,评审
doi:10.1146/annurev.immunol.15.1.15
更新日期:1997-01-01 00:00:00