Abstract：
:Many immune cells can detect the direction and intensity of an extracellular chemical gradient, and migrate toward the source of stimulus. This process, called chemotaxis, is essential for immune system function and homeostasis, and its deregulation is associated with serious diseases. Chemotaxis is initiated by chemoattractant binding to heterotrimeric G protein-coupled receptors, which translate the gradients into accurate directional migration. A necessary step in this process is cell polarization, the acquisition of functional and spatial asymmetry. The use of new imaging technologies enables analysis of spatial and temporal changes in the activity of proteins and membrane domains involved in polarization and chemotaxis. We discuss the sometimes contradictory evidence available and the emerging molecular model for immune cell polarity and chemotaxis.
journal_name
Semin Immunoljournal_title
Seminars in immunologyauthors
Mañes S,Gómez-Moutón C,Lacalle RA,Jiménez-Baranda S,Mira E,Martínez-A Cdoi
10.1016/j.smim.2004.09.005keywords:
subject
Has Abstractpub_date
2005-02-01 00:00:00pages
77-86issue
1eissn
1044-5323issn
1096-3618pii
S1044-5323(04)00060-0journal_volume
17pub_type
杂志文章,评审abstract：:T helper (TH) cells can assume different phenotypes characterized by the secretion of distinct effector molecules. Interferon-gamma producing TH1 and IL-4 producing TH2 cells have long been recognized as important mediators of host defense, whereas regulatory T cells are known to suppress T cell responses. Recently, T...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2007.10.016
更新日期：2007-12-01 00:00:00
abstract：:Interferon epsilon (IFNε) is a type I IFN with unusual patterns of expression and therefore, function. It is constitutively expressed by reproductive tract epithelium and regulated by hormones during estrus cycle, reproduction, and menopause and by exogenous hormones. The IFNe protein is encoded by a gene in the type ...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2019.101328
更新日期：2019-06-01 00:00:00
abstract：:Antibody production is crucial for a successful vaccine response. Beyond the ability of vitamin A (VA) and its active metabolite, all-trans-retinoic acid (RA) to restore growth in VA-deficient animals, supplementation with VA and/or treatment with RA can augment antibody responses in both VA-deficient and VA-adequate ...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2008.08.004
更新日期：2009-02-01 00:00:00
abstract：:Plasmacytoid dendritic cells (pDCs) are specialized sensors of viral nucleic acids that initiate protective immunity through the production of type I interferons (IFNs). Normally, pDCs fail to sense host-derived self-nucleic acids but do so when self-nucleic acids form complexes with endogenous antimicrobial peptides ...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2009.01.004
更新日期：2009-06-01 00:00:00
abstract：:Pentraxins are highly conserved components of the humoral arm of innate immunity. They include the short pentraxins C reactive protein (CRP) and serum amyloid P component (SAP), and the long pentraxin PTX3. These are soluble pattern-recognition molecules that are present in the blood and body fluids, and share the abi...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2013.05.002
更新日期：2013-02-01 00:00:00
abstract：:The MHC class I antigen presentation pathway enables cells infected with intracellular pathogens to signal the presence of the invader to the immune system. Cytotoxic T lymphocytes are able to eliminate the infected cells through recognition of pathogen-derived peptides presented by MHC class I molecules at the cell s...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2015.03.010
更新日期：2015-03-01 00:00:00
abstract：:Initially discovered as an initiator protease in apoptosis mediated by death receptors, caspase-8 is now known to have an apparently confounding opposing effect in securing cell survival. It is required to allow mouse embryo survival, and the survival of hematopoietic cells during their development and activation. Cla...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2014.03.005
更新日期：2014-06-01 00:00:00
abstract：:Apoptosis of activated lymphocytes is critical to immune homeostasis. The cell surface receptor Fas is an important mediator of lymphocyte apoptosis; defective Fas expression causes accumulation of lymphocytes and autoimmune disease in mice. Apoptosis defects due to mutations of Fas have also been found in a rare huma...
journal_title：Seminars in immunology
pub_type： 杂志文章
doi：10.1006/smim.1996.0056
更新日期：1997-02-01 00:00:00
abstract：:From the earliest days in the field of tumor immunology three questions have been asked: do cancer cells express tumor-specific antigens, does the immune system recognize these antigens and if so, what is their biochemical nature? We now know that truly tumor-specific antigens exist, that they are caused by somatic mu...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2008.07.001
更新日期：2008-10-01 00:00:00
abstract：:Several mAbs that have been approved for the treatment of cancer make use of complement-dependent cytotoxicity (CDC) to eliminate tumor cells. Comprehensive investigations, based on in vitro studies, mouse models and analyses of patient blood samples after mAb treatment have provided key insights into the details of i...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2016.03.003
更新日期：2016-06-01 00:00:00
abstract：:The molecular and cellular mechanisms of allergen tolerance in humans have been intensively studied in the past few decades. The demonstration of epitope-specific T cell tolerance, particularly mediated by the immune suppressor functions of IL-10 led to a major conceptual change in this area more than 20 years ago. Cu...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2019.101326
更新日期：2019-08-01 00:00:00
abstract：:Autoimmune diseases have been studied from the perspective of an abnormal immune response in genetically vulnerable hosts. Although the immune response is responsible for the initiation of autoimmune diseases, the effectors of the disease process likely involves cytokines such as interleukin-1 (IL-1) and tumor necrosi...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：
更新日期：1992-06-01 00:00:00
abstract：:Vaccinations are powerful tools for combating infections. Because of the age-related impairment in immune functions, the currently available vaccines are protecting only a small proportion of the elderly population. We, here, provide an overview of age-related changes in innate and adaptive immunity with particular em...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2005.05.005
更新日期：2005-10-01 00:00:00
abstract：:Signals from the precursor-B cell receptor (pre-BCR) are essential for selection and clonal expansion of pre-B cells that have performed productive immunoglobulin heavy chain V(D)J recombination. In the mouse, the downstream signaling molecules SLP-65 and Btk cooperate to limit proliferation and induce differentiation...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2005.10.002
更新日期：2006-02-01 00:00:00
abstract：:The ability of the immune system to discriminate between healthy-self, abnormal-self, and non-self has been attributed mainly to alarmins signaling as "danger signals". It is now evident, however, that alarmins are much more complex and can perform specialized functions that can regulate a wide spectrum of processes r...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2018.08.004
更新日期：2018-08-01 00:00:00
abstract：:CR1 (C3b receptor) and CR2 (C3d/EBV receptor) are two C3 receptors expressed on B lymphocytes. CR1 and CR2 have structural similarities and their cross-linking at the B cell surface by antibodies or specific ligands in multimeric forms induce B cell activation. However, activation of human B cells through cell surface...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：
更新日期：1990-03-01 00:00:00
abstract：:In seeking an explanation for the complexity of tissue development, biologists are obliged to explain lineage commitment, the events that dictate whether or not a progenitor cell will differentiate into one cell type or another. Such explanations have been sought across a broad spectrum of biological systems, although...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1006/smim.1999.0180
更新日期：1999-08-01 00:00:00
abstract：:The LTB4 pathway is an attractive target for therapeutic drug development. Two broad classes of drugs have been pursued: antagonists of the primary LTB4 receptors (BLT1 and BLT2) and inhibitors of LTA4 Hydrolase (LTA4H), the rate limiting enzyme in the production of LTB4. An initial wave of effort culminated in the 19...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2017.08.007
更新日期：2017-10-01 00:00:00
abstract：:It is becoming increasingly accepted that macrophages play a crucial role in many diseases associated with chronic inflammation, including atherosclerosis, obesity, diabetes, cancer, skin diseases, and even neurodegenerative diseases. It is therefore not surprising that macrophages in human diseases have gained signif...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2015.07.003
更新日期：2015-08-01 00:00:00
abstract：:The commensal microbiome constitutes an important modulator of host physiology and risk of disease, including cancer development and progression. Lately, the microbiome has been suggested to modulate the efficacy of anti-cancer treatment. Examples include chemotherapy and total body irradiation-induced barrier functio...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2017.04.001
更新日期：2017-08-01 00:00:00
abstract：:Mycobacterium tuberculosis remains a major public health burden. It is generally thought that while B cell- and antibody-mediated immunity plays an important role in host defense against extracellular pathogens, the primary control of intracellular microbes derives from cellular immune mechanisms. Studies on the immun...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2014.10.005
更新日期：2014-12-01 00:00:00
abstract：:Celiac disease (CD) is an increasingly common disease of the small intestine that occurs in genetically susceptible subjects by ingestion of cereal gluten proteins. Gluten is highly abundant in the modern diet and well tolerated by most individuals. In CD, however, an erroneous but highly specific, adaptive immune res...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2015.11.001
更新日期：2015-09-01 00:00:00
abstract：:Increasing interest in the initial steps of hemopoiesis in the embryo is prompted by the lack of information about the primordial origin and the nature of hemopoietic stem cells. It appears critical to understand the emergence, diversification and differentiation potential of hemopoietic cells in the preliver embryo. ...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/1044-5323(95)90041-1
更新日期：1995-06-01 00:00:00
abstract：:V(D)J recombination consists of a DNA cleavage reaction catalysed by RAG1 and RAG2, followed by an end-joining reaction that utilizes the cell's double-strand break repair machinery. Genes essential for the end-joining reaction include: XRCC4 encoding a protein of unknown enzymatic function; XRCC5 and XRCC6 encoding 8...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1006/smim.1997.0070
更新日期：1997-06-01 00:00:00
abstract：:Macrophages are important for tissue development, homeostasis as well as immune response upon injury or infection. For a long time they were only seen as one uniform group of phagocytes with a common origin and similar functions. However, this view has been challenged in the last decade and revealed a complex diversit...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2016.03.017
更新日期：2015-12-01 00:00:00
abstract：:CD4+ helper T cells recognize short peptides stably associated with class II MHC molecules displayed on the surface of antigen presenting cells. Very little is known about the sequence of events that lead to the generation of these peptides from protein antigens. It is likely that native proteins must partially unfold...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1006/smim.1995.0039
更新日期：1995-12-01 00:00:00
abstract：:The frontiers of cancer immunotherapy are extending in terms of both the range of cancer types that can potentially be targeted and the types of therapeutics that are in clinical development. The use of adoptive cellular therapy (ACT) and its derivative, chimeric antigen receptor (CAR) T cells, is currently limited to...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2015.11.003
更新日期：2016-02-01 00:00:00
abstract：:Twenty-five years ago, immunologists and neuroscientists had little science of mutual interest. This is no longer the case. Neuroscientists now know that the first formally defined cytokine, IL-1, activates a discrete population of hypothalamic neurons. This interaction leads to the release of glucocorticoids from the...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1016/j.smim.2014.01.011
更新日期：2014-10-01 00:00:00
abstract：:Polymorphic MHC is absent from the trophoblast, therefore, it resists NK as well as CTL-mediated lysis in vitro. Activated gamma / delta TCR positive cells are significantly enriched in the decidua as well as in peripheral blood of healthy pregnant women. Human peripheral gamma / delta lymphocytes preferentially expre...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1006/smim.2000.0318
更新日期：2001-08-01 00:00:00
abstract：:The signalling mechanisms of the IL-2R remained an enigma until recent years. We now know that IL-2R are coupled to their own unique signalling pathways that complement rather than duplicate TCR signalling. The IL-2R beta- and gamma-chains are essential for signal coupling. Sequence comparisons indicate that portions ...
journal_title：Seminars in immunology
pub_type： 杂志文章,评审
doi：10.1006/smim.1993.1040
更新日期：1993-10-01 00:00:00
