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 migration of immune cells. We find that this integrin operates not only as an adhesion receptor for T lymphoblasts (T cells) but also induces their migration in vitro at approximately 15 microm/min. Migration requires active myosin light chain kinase at the leading edge and Rho kinase at the trailing edge of the cell. Two active conformations of LFA-1 are differently distributed on the T-cell membrane and regulate independent aspects of migration. High-affinity LFA-1 is located in a midcell 'focal zone' and influences the speed of migration, whereas intermediate affinity LFA-1 controls leading edge adhesions. Manipulating LFA-1 conformation in vivo can be performed, for example, by creating the active conformation in a transgenic mouse, and this model gives further insight into the role of LFA-1 in migration. In humans, the beneficial effect of functioning CD18 integrins in combating infections in vivo is illustrated by rare patients displaying two forms of leukocyte adhesion deficiency. In summary, we speculate that T cells have evolved a mode of rapid migration that is of paramount importance in achieving the high-speed immune surveillance upon which depends the body's protection against diverse invaders from pathogens to cancer cells.
journal_name
Immunol Revjournal_title
Immunological reviewsauthors
Smith A,Stanley P,Jones K,Svensson L,McDowall A,Hogg Ndoi
10.1111/j.1600-065X.2007.00537.xsubject
Has Abstractpub_date
2007-08-01 00:00:00pages
135-46eissn
0105-2896issn
1600-065Xpii
IMR537journal_volume
218pub_type
杂志文章,评审abstract：:The activities of the immune system in repairing tissue injury and combating pathogens were long thought to be independent of the nervous system. However, a major regulatory role of immunomodulatory molecules released locally or systemically by the neuroendocrine system has recently emerged. A number of observations a...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12707
更新日期：2018-11-01 00:00:00
abstract：:Apoptosis is an important component of normal tissue physiology, and the prompt removal of apoptotic cells is equally essential to avoid the undesirable consequences of their accumulation and disintegration. Professional phagocytes are highly specialized for engulfing apoptotic cells. The recent ability to track cells...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12537
更新日期：2017-05-01 00:00:00
abstract：:The individual role of pathogen-binding Toll-like receptors (TLRs) and antibody-binding Fc receptors (FcRs) during pathogenic infections has been studied extensively. However, combined activation of these different receptor classes has received little attention, even though they are triggered simultaneously when immun...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12333
更新日期：2015-11-01 00:00:00
abstract：:Hepatitis B virus (HBV) is a major human pathogen that causes chronic infection and life-threatening liver diseases in millions of individuals. While pathological and epidemiological consequences of clinically evident HBV infections are well recognized, there is no similar knowledge on an asymptomatic, silently progre...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1034/j.1600-0528.2002.017406.x
更新日期：2000-04-01 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：:Natural killer (NK) cells of inbred mice reject allogeneic bone-marrow cells, and NK cells of F1 hybrid mice can reject parental bone-marrow cells (hybrid resistance). In some cases these patterns of rejection can be mimicked in vitro by utilizing IL-2 cultured NK effector cells and allogeneic or parental T-lymphoblas...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1997.tb00937.x
更新日期：1997-02-01 00:00:00
abstract：:Self-tolerance is achieved by deleting or regulating self-reactive lymphocytes at a series of cellular checkpoints placed at many points along the developmental pathways to plasma cells and effector T cells. At each checkpoint, what are the molecular pathways that determine whether a lymphocyte remains quiescent, begi...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1034/j.1600-065x.2000.00614.x
更新日期：2000-08-01 00:00:00
abstract：:On the basis of cell surface markers, mature T cells are considered to have either a naïve or a memory phenotype. These cells exhibit distinct types of kinetic behaviour in vivo. While naïve-phenotype cells persist long term in a non-dividing state, memory-phenotype T cells include cycling cells and exhibit a more rap...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1999.tb01327.x
更新日期：1999-08-01 00:00:00
abstract：:Unique Vγ2Vδ2 (Vγ9Vδ2) T cells existing only in human and non-human primates, account for the majority of circulating γδ T cells in human adults. Vγ2Vδ2 T cells are the sole γδ T-cell subpopulation capable of recognizing the microbial (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMBPP) produced by selected pathoge...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12927
更新日期：2020-11-01 00:00:00
abstract：:αβ T cells are an integral part of protective immunity against pathogens. After precursor cells arise in the adult bone marrow or fetal liver, they migrate to the thymus where they rearrange their T-cell receptor genes (TCR) and undergo selection on the basis of their interactions with ligands expressed by thymic stro...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12095
更新日期：2013-09-01 00:00:00
abstract：:MHC class I molecules function to present peptides comprised of eight to 11 residues to CD8+ T lymphocytes. Here we review the efforts of our laboratory to understand how cells generate such peptides from viral gene products. We particularly focus on the nature of substrates acted on by cytosolic proteases, the contri...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1999.tb01359.x
更新日期：1999-12-01 00:00:00
abstract：:The cellular communications between a human CD4+ clone and autologous CD4+ clones induced with the first clone are described. The autoreactive clones proliferated after stimulation with the inducer clone, but not after stimulation with autologous clones expressing irrelevant specificities. The inducer clone markedly l...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1990.tb00804.x
更新日期：1990-08-01 00:00:00
abstract：:The bronchus-associated lymphoid tissue (BALT) and the nasal-associated lymphoid tissue (NALT) constitute organized lymphoid aggregates that are capable of T- and B-cell responses to inhaled antigens. BALT, located mostly at bifurcations of the bronchus in animals and humans, is present in the fetus and develops rapid...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2005.00299.x
更新日期：2005-08-01 00:00:00
abstract：:Studies of the regulation of gene expression historically focused on transcription. However, during stress and apoptosis, profound gene expression changes occur more rapidly and globally than is possible by regulating transcription. Posttranscriptional changes in mRNA processing and translation in response to diverse ...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12052
更新日期：2013-05-01 00:00:00
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：:The major histocompatibility complex (MHC) plays a central role in controlling immune responsiveness, susceptibility to certain diseases and histo-incompatibility. A physical map of the complete rat MHC, the RTI complex, is presented based on a PAC clonal contig (RT1n haplotype). Expression profiling of various tissue...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1034/j.1600-065x.2001.1840108.x
更新日期：2001-12-01 00:00:00
abstract：SUMMARY:Dengue viruses (DENV) are the mosquito-borne viruses of greatest global public health importance. DENV circulate as four serotypes with significant immunologic cross-reactivity that does not provide protection from secondary infection with heterologous serotypes. The strong association of severe dengue illness,...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2008.00678.x
更新日期：2008-10-01 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：:Expressed predominantly on myeloid and natural killer (NK) cells, DAP12 is an adapter protein that can associate with a variety of receptors. To date, DAP12 has predominantly been characterized as an adapter protein that activates various myeloid and NK cell effector functions; however, recent findings have demonstrat...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2006.00466.x
更新日期：2006-12-01 00:00:00
abstract：:Group 1 innate lymphocytes consist of a phenotypically, spatially, and functionally heterogeneous population of NK cells and ILC1s that are engaged during pathogen invasion. We are only beginning to understand the context-dependent roles that different subsets of group 1 innate lymphocytes play during homeostatic pert...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12710
更新日期：2018-11-01 00:00:00
abstract：:The genes that encode molecules involved in antigen presentation within the class I and class II regions of the mammalian major histocompatibility complex (MHC) include several that are highly polymorphic. There is evidence that this polymorphism is maintained by positive selection, most likely overdominant selection,...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1999.tb01381.x
更新日期：1999-02-01 00:00:00
abstract：:It is clear by now that cell-to-cell interactions involving a variety of signals are required for effective immune response. The data reviewed here suggest that CD40-CD40L interactions are critical for development of CD4 T-cell-dependent effector functions. Lack of this important interaction results in greatly reduced...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1996.tb00921.x
更新日期：1996-10-01 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：:The nuclear hormone receptor retinoid-related orphan receptor γt (RORγt) induces a pro-inflammatory program in lymphoid cells, culminating in the expression of interleukin-6 (IL-6), IL-17, IL-22, granulocyte-macrophage colony-stimulating factor, and tumor necrosis factor. During ontogeny, the first type of cells expre...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2011.01071.x
更新日期：2012-01-01 00:00:00
abstract：:More than 20 years ago, immunologists discovered that resistance and susceptibility to experimental infection with the intracellular protozoan Leishmania major was associated with the development of T-helper 1 (Th1)- and Th2-dominated immune responses, respectively. This infectious disease model was later used to iden...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2010.00983.x
更新日期：2011-03-01 00:00:00
abstract：:Over the past two decades, structural biology has shown how T-cell receptors engage peptide/major histocompatibility complex (MHC) complexes and provided insight into the mechanisms underlying antigen specificity and cross-reactivity. Here we review and contextualize our contributions, which have emphasized the influe...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065X.2012.01165.x
更新日期：2012-11-01 00:00:00
abstract：:Vaccines or early childhood exposure to infection mediate immunity, that is, improved resistance against disease and death caused by a second infection with the same agent. This has been explained by and equaled to immunological memory, that is, an "altered immune system behavior" that is maintained in a presumably an...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/imr.12648
更新日期：2018-05-01 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：:The pattern of polymorphisms at MHC loci was studied by computer simulations and by DNA sequence analyses, with special reference to synonymous and non-synonymous divergence among alleles. A model of overdominance plus short-term selection was simulated for a gene family with allelic and non-allelic gene conversion. I...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.1600-065x.1999.tb01401.x
更新日期：1999-02-01 00:00:00
abstract：:The immunoreceptor tyrosine-based activation motif (ITAM) is a highly conserved region in the cytoplasmic domain of signaling chains and receptors and is a critical mediator of intracellular signals. ITAM-mediated signals depend on the Syk or zeta-associated protein of 70 kDa tyrosine kinases, and ITAM signaling is re...
journal_title：Immunological reviews
pub_type： 杂志文章,评审
doi：10.1111/j.0105-2896.2005.00325.x
更新日期：2005-12-01 00:00:00
