Abstract:
:Thymocytes incubated with either ATP or GTP exhibit a brief period of enhanced DNA synthesis in contrast to the prolonged period of enhanced synthesis observed when thymocytes were incubated with concanavalin A. The cells responding to nucleotides represent a sub-population of theta antigen-bearing T cells comprising approximately 2% of the total thymocyte population as judged by a combined immunofluorescent/autoradiographic analysis. Thymocytes responsive to ATP and GTP are sensitive to cortisone suggesting that they are relatively immature T cells. ATP-responsive cells also preferentially aggregate with immature T cells when incubated with peanut agglutinin. GTP-responsive cells, on the other hand, do not. Nucleotides rendered insoluble by linkage to agarose via the ribose moiety are more active mitogenically at lower concentrations than either soluble nucleotides or even nucleotides linked to agarose via the nucleic acid base. The results are consistent with the view that the mitogenic response of thymocytes to nucleotides may be limited to as little as a single round of DNA synthesis and that such mitogenesis is stimulated at a site located on the plasma membrane.
journal_name
Immunologyjournal_title
Immunologyauthors
Gregory SH,Kern Msubject
Has Abstractpub_date
1981-03-01 00:00:00pages
451-7issue
3eissn
0019-2805issn
1365-2567journal_volume
42pub_type
杂志文章相关文献
IMMUNOLOGY文献大全abstract::The migration of immune cells through the extracellular matrix (ECM) towards inflammatory sites is co-ordinated by receptors recognizing ECM glycoproteins, chemokines and proinflammatory cytokines. In this context, galectins are secreted to the extracellular milieu, where they recognize poly-N-acetyllactosamine chains...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.1999.00746.x
更新日期:1999-05-01 00:00:00
abstract::Previously published work has shown that a cytotoxic T-cell epitope (CTL) representing residues 82-90 of the M2 protein of respiratory syncytial virus (RSV) is the target for a protective response against the virus. In this report, we demonstrate that a synthetic peptide representing residues 81-95, when covalently li...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
abstract::Immune synapse formation is critical for T lymphocyte activation, and mitochondria have a role in this process, by localizing close to the immune synapse, regulating intracellular calcium concentration, and providing locally required ATP. The interaction between antigen presenting cells (APCs) and T lymphocytes is a t...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12392
更新日期:2014-09-23 00:00:00
abstract::Major histocompatibility complex (MHC) class I-specific inhibitory natural killer receptors (iNKRs) are expressed by subsets of T cells but the mechanisms inducing their expression are poorly understood, particularly for killer-cell immunoglobulin-like receptors (KIRs). The iNKRs are virtually absent from the surface ...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/j.1365-2567.2009.03194.x
更新日期:2010-03-01 00:00:00
abstract::Antibodies to neuronal antigens are associated with many neurological diseases including paraneoplastic neurological disorders, epilepsy, amyotrophic lateral sclerosis and multiple sclerosis. Immunization with neuronal antigens such as neurofilament light (NF-L), a neuronal intermediate filament in axons, has been sho...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12797
更新日期:2017-12-01 00:00:00
abstract::To evaluate the role of the high-affinity monocyte receptor for lipopolysaccharide (LPS), CD14, in the process of tolerance to LPS, the human monocytic cell line Mono-Mac-6 was cultured in the absence or presence of different amounts of LPS. The kinetics of CD14 modulation in these cells showed an initial 4-day period...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1993-11-01 00:00:00
abstract::Interleukin-19 (IL-19) plays an important role in asthma by stimulating T helper type 2 (Th2) cytokine production. Interestingly, IL-4, a key Th2 cytokine, in turn up-regulates IL-19 expression in bronchial epithelial cells, so forming a positive feedback loop. In atopic dermatitis (AD), another Th2 disease closely re...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12339
更新日期:2014-12-01 00:00:00
abstract::A non-specific suppressor factor, owl monkey suppressor factor, OMSF, from leukaemic owl monkey peripheral T lymphocytes has been isolated and characterized. OMSF is a glycoprotein of a molecular weight of 66,000 which can be produced from purified owl monkey enhancing factor, OMEF, by both Tris buffer dialysis and by...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract::The defined antigen substrate spheres (DASS) system was employed for analysing reactions between solid state antibody or antigen and soluble immune complexes. Sepharose beads covalently coupled with ovalbumin were used to represent tumour cells and beads coupled with antibody against ovalbumin were used to represent a...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1975-06-01 00:00:00
abstract::Using double staining for T-cell receptor (TCR) and 5-bromo-2'-deoxyuridine (BRdU) we have examined the proliferation rates and lifespan of murine intraepithelial lymphocytes (IEL's) in vivo. After a 24-hr pulse of BRdU the number of labelled alpha beta TCR+ IEL was significantly higher in the ileum than the duodenum....
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1995-10-01 00:00:00
abstract::Many experiments have demonstrated that the nervous and immune systems interact in a bidirectional fashion. Neuropeptides, including substance P, have been shown to modulate lymphocyte DNA, RNA and immunoglobulin synthesis in vitro and to play a role in inflammatory and hypersensitivity disease states. However, the ro...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract::The concentration of CXCL12/SDF-1 in the bloodstream is tightly regulated, given its central role in leucocyte and stem/progenitor cell egress from bone marrow and recruitment to sites of inflammation or injury. The mechanism responsible for this regulation is unknown. Here we show that both genetic deletion and pharm...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12176
更新日期:2014-01-01 00:00:00
abstract::Natural cell-mediated cytotoxicity is mediated by a family of effector cells that express cytolytic activities distinct from those generally attributed to B cells, T cells and macrophages; it includes both natural killer (NK) and natural cytotoxic (NC) activities. There is now convincing evidence to show that NC activ...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract::Type A chrysotile fibres (white asbestos) were tested in vitro for activation of the complement system. Fibres were incubated in normal human serum (NHS), factor B-depleted human serum, and normal and C4-deficient guinea-pig sera; the supernates were assayed for the remaining complement activity. Activation of the alt...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1980-10-01 00:00:00
abstract::This study compares the effects of soluble intact (IgG) and F(ab')2 rabbit anti-mu and anti-delta antibodies on mouse B cells. The results show that while the F(ab')2 antibodies to both isotypes induce polyclonal B cell proliferation, the IgG antibodies are not mitogenic, but rather inhibit DNA synthesis induced by th...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1985-04-01 00:00:00
abstract::A murine model was used to study the respective roles of L3T4+ and Lyt-2+ T cells in protection against Chlamydia psittaci. Donor mice were intravenously (i.v.) infected with 1 x 10(5) plaque-forming units (PFU) per mice of live C. psittaci. One month after inoculation, splenic cells from donors were transferred into ...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
abstract::In two consecutive studies, eighteen and forty-one normal subjects were given a standard tuberculin skin test of 1 tuberculin unit (0.02 mug of PPD). Two days later another skin test was given. Readings of the skin reactions showed that subjects exhibiting strongly positive skin reactions in their primary skin tests s...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1975-02-01 00:00:00
abstract::Specific pathogen-free B6D2 mice were infected intravenously with 10(8) viable BCG, M. habana or M. simiae and the level of tuberculin hypersensitivity to 2.5 micrograms PPD or cytoplasmic protein antigens (CPA) prepared from the other organisms was determined using the footpad swelling test with increasing time after...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1980-03-01 00:00:00
abstract::The adult cockroach generates an adaptive humoral immune response exhibiting specificity and immunological memory when immunized with soluble proteins. In contrast, the response induced by bacteria in holometabolous insects is non-specific and short term, generally losing activity after 72 hr. We have found that the r...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1992-02-01 00:00:00
abstract::Programmed death-1 (PD-1) plays an important role in protecting against inflammation and myocyte damage in T-cell-mediated myocarditis. To understand whether fibrinogen-like protein-2 (FGL2) can affect the role of the PD-1/PD-L1 pathway in experimental autoimmune myocarditis (EAM), we investigated cardiac function in ...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12837
更新日期:2018-02-01 00:00:00
abstract::Interleukin-2 (IL-2) is a critical regulator of immune homeostasis through its non-redundant role in regulatory T (Treg) cell biology. There is major interest in therapeutic modulation of the IL-2 pathway to promote immune activation in the context of tumour immunotherapy or to enhance immune suppression in the contex...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1111/imm.12609
更新日期:2016-07-01 00:00:00
abstract::The negative role exerted by cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) in the regulation of T-cell activity, as induced by T-cell receptor (TCR)/CD3 and CD28 costimulation, has been widely described. In the present work we investigated the role of CTLA-4 in the control of cell activation, as induced by cost...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.2002.01493.x
更新日期:2002-10-01 00:00:00
abstract::Thymocytes expressing self-reactive T-cell receptors (TCR) are eliminated in the thymus through a TCR-mediated signal. This cell death signal (negative selection) generates nuclear morphological change and DNA fragmentation in thymocytes. However, the pathway leading to DNA fragmentation of thymocytes following TCR en...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.2002.01347.x
更新日期:2002-04-01 00:00:00
abstract::The cellular basis of the mechanism of immunological tolerance to human gamma-globulin (H gamma G) induced in foetal and neonatal mice by materno-foetal or materno-neonatal transfer after a single injection of tolerogen (deaggregated H gamma G) into the mothers was investigated using a cell transfer system and assays ...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1979-05-01 00:00:00
abstract::The CD3-T-cell receptor complex is the clonotypic surface structure by which T lymphocytes recognize foreign antigens and are subsequently activated. Because of the low immunogenicity of the CD3 molecules, anti-CD3 monoclonal antibodies (mAb) are difficult to prepare and have not been available in several species. Fol...
journal_title:Immunology
pub_type: 杂志文章
doi:10.1046/j.1365-2567.1996.d01-682.x
更新日期:1996-08-01 00:00:00
abstract::We examined the mechanisms of disturbed T-lymphocyte function that occurred during Schistosoma japonicum infection of BALB/c mice from the viewpoint of the interleukin cascade reaction. Each point of the interleukin cascade reaction was examined. First, IL-1 production by adherent peritoneal or spleen cells, as a sour...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1987-10-01 00:00:00
abstract::A rat thymic epithelial cell (TEC) line (R-TNC.1) was established from a long-term TEC culture. Based on its ultrastructure, phenotype and cytokeratin profile, this line was characterized as a type of cortical TEC. R-TNC.1 cells had nursing activity which was manifested by the binding and subsequent engulfment of thym...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1994-11-01 00:00:00
abstract::Murine lymphokine-activated killer (LAK) cells induced by systemic high-dose recombinant human interleukin 2 (IL-2) administration lysed fresh syngeneic peritoneal macrophages (M phi). LAK cells lysed resident peritoneal M phi and M phi activated in vivo with thioglycollate (TG), Corynebacterium parvum (C. parvum), or...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1989-12-01 00:00:00
abstract::The immunosuppressive activity of serum from PVG rats following orthotopic transplantation of DA liver has been examined in vitro. Liver grafts in this combination are never rejected, but induce a state of specific transplantation tolerance in the recipient. Serum from such tolerant animals was able to inhibit prolife...
journal_title:Immunology
pub_type: 杂志文章
doi:
更新日期:1987-08-01 00:00:00
abstract::Invariant natural killer T (iNKT) cells are an innate population of T cells identified by the expression of an invariant T-cell receptor and reactivity to lipid-based antigens complexed with CD1d. They account for a small percentage of lymphocytes, but are extremely potent and play central roles in immunity to infecti...
journal_title:Immunology
pub_type: 杂志文章,评审
doi:10.1111/imm.12481
更新日期:2015-08-01 00:00:00