Abstract:
:Chemokines as well as the signaling through the adhesion molecules intercellular adhesion molecule (ICAM)-3 and CD43 are able to induce in T lymphocytes their switching from a spherical to a polarized motile morphology, with the formation of a uropod at the rear of the cell. We investigated here the role of CD43 in the regulation of T-cell polarity, CD43-cytoskeletal interactions, and lymphocyte aggregation. Pro-activatory anti-CD43 monoclonal antibody (MoAb) induced polarization of T lymphocytes with redistribution of CD43 to the uropod and the CCR2 chemokine receptor to the leading edge of the cell. Immunofluorescence analysis showed that all three ezrin-radixin-moesin (ERM) actin-binding proteins localized in the uropod of both human T lymphoblasts stimulated with anti-CD43 MoAb and tumor-infiltrating T lymphocytes. Radixin localized at the uropod neck, whereas ezrin and moesin colocalized with CD43 in the uropod. Biochemical analyses showed that ezrin and moesin coimmunoprecipitated with CD43 in T lymphoblasts. Furthermore, in these cells, the CD43-associated moesin increased after stimulation through CD43. The interaction of moesin and ezrin with CD43 was specifically mediated by the cytoplasmic domain of CD43, as shown by precipitation of both ERM proteins with a GST-fusion protein containing the CD43 cytoplasmic tail. Videomicroscopy analysis of homotypic cell aggregation induced through CD43 showed that cellular uropods mediate cell-cell contacts and lymphocyte recruitment. Immunofluorescence microscopy performed in parallel showed that uropods enriched in CD43 and moesin localized at the cell-cell contact areas of cell aggregates. The polarization and homotypic cell aggregation induced through CD43 was prevented by butanedione monoxime, indicating the involvement of myosin cytoskeleton in these phenomena. Altogether, these data indicate that CD43 plays an important regulatory role in remodeling T-cell morphology, likely through its interaction with actin-binding proteins ezrin and moesin. In addition, the redistribution of CD43 to the uropod region of migrating lymphocytes and during the formation of cell aggregates together with the enhancing effect of anti-CD43 antibodies on lymphocyte cell recruitment suggest that CD43 plays a key role in the regulation of cell-cell interactions during lymphocyte traffic.
journal_name
Bloodjournal_title
Bloodauthors
Serrador JM,Nieto M,Alonso-Lebrero JL,del Pozo MA,Calvo J,Furthmayr H,Schwartz-Albiez R,Lozano F,González-Amaro R,Sánchez-Mateos P,Sánchez-Madrid Fsubject
Has Abstractpub_date
1998-06-15 00:00:00pages
4632-44issue
12eissn
0006-4971issn
1528-0020journal_volume
91pub_type
杂志文章相关文献
BLOOD文献大全abstract::We report two patients with a distinctive biphenotypic hematologic disorder characterized by lymphoblastic lymphoma (LBL), eosinophilia, and myeloid malignancy and/or hyperplasia associated with a t(8;13)(p11;q11) chromosomal translocation in both bone marrow and lymph node specimens. Both patients presented with lymp...
journal_title:Blood
pub_type: 杂志文章,评审
doi:
更新日期:1995-04-01 00:00:00
abstract::Although mycosis fungoides (MF) is typically an indolent disease, patients with advanced-stage disease (stages IIB-IVB), including Sézary syndrome (SS), often have a poor outcome. A 31-year, retrospective analysis of our cutaneous lymphoma database, of 297 patients with MF and SS, was undertaken to study long-term out...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2008-05-154609
更新日期:2008-10-15 00:00:00
abstract::On the basis of the finding of alternatively spliced mRNAs, the alpha-subunit of the receptor for GM-CSF is thought to exist in both a membrane spanning (tmGMRalpha) and a soluble form (solGMRalpha). However, only limited data has been available to support that the solGMRalpha protein product exists in vivo. We hypoth...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2000-01-15 00:00:00
abstract::Rabbit platelets were aggregated by adenosine diphosphate (ADP), allowed to deaggregate and then separated into density subpopulations by centrifugation through discontinuous Stractan density gradients. Although ADP causes little or no release of the contents of the amine storage granules of rabbit platelets, ADP caus...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1985-03-01 00:00:00
abstract::Thrombospondin is a principal glycoprotein secreted by thrombin-stimulated platelets and has known affinities for fibrinogen and fibrin. We studied the distribution of thrombospondin in clots formed in situ on Formvar-coated coverslips at 37 degrees C for intervals up to 17 hours. The distributions of three other majo...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1985-11-01 00:00:00
abstract::Binding of platelets to fibrinogen via integrin alphaIIbbeta3 stimulates cytoskeletal reorganization and spreading. These responses depend on tyrosine phosphorylation of multiple proteins by Src family members and Syk. Among Src substrates in platelets is adhesion- and degranulation-promoting adapter protein (ADAP), a...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-08-238238
更新日期:2010-03-18 00:00:00
abstract::Plasmin exposure modulates platelet aggregation responses, but a direct effect of plasmin on the platelet fibrinogen receptor, glycoprotein IIb/IIIa (GPIIb/IIIa), has never been conclusively shown in a plasma milieu. To examine this issue, we incubated platelets in platelet-rich plasma with plasmin and measured the ef...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1994-01-15 00:00:00
abstract::Interleukin-3 (IL-3) has been shown to be a promising agent in the stimulation of bone marrow regeneration following myeloablative therapy. The biologic half-life of this agent is very short (5 to 15 minutes), which limits the effectiveness of low-dose therapy. Here we show that the biologic effects of low-dose IL-3 i...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1993-08-15 00:00:00
abstract::The introduction of agents targeted at specific molecular events is changing the treatment paradigms in a number of malignancies. Historically, we have relied entirely on DNA-interactive, cytotoxic drugs for treating patients with leukemia. Increased understanding of the leukemic cell biology and pathogenesis, and the...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2018-08-832105
更新日期:2019-01-10 00:00:00
abstract::The effect of donor/recipient histocompatibility on relapse in patients receiving T-cell-depleted (TCD) grafts for chronic myelogenous leukemia (CML) was evaluated. Specifically, we sought to determine whether TCD results in an attenuation of the graft-versus-leukemia (GVL) effect on recipients of unrelated marrow gra...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-11-15 00:00:00
abstract::Autologous membrane-bound IgG was isolated from a subpopulation of human red blood cells (RBC) with specific density greater than 1.110, by affinity chromatography of purified RBC membrane glycoprotein preparations using immobilized wheat germ agglutinin and immobilized anti-human immunoglobulin (Ig) as immunoabsorben...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1981-08-01 00:00:00
abstract::Ten patients with idiopathic thrombocytopenic purpura (ITP) were studied before and following a rise in circulating platelets subsequent to infusions of intravenous gammaglobulin (400 mg/kg/day x 5 days). We quantitated the amount of circulating IgG capable of binding to normal donor platelets in vitro using an 125I-m...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-02-15 00:00:00
abstract::Improved supportive care, more precise risk stratification, and personalized chemotherapy based on the characteristics of leukemic cells and hosts (eg, pharmacokinetics and pharmacogenetics) have pushed the cure rate of childhood acute lymphoblastic leukemia to near 90%. Further increase in cure rate can be expected f...
journal_title:Blood
pub_type: 杂志文章,评审
doi:10.1182/blood-2012-05-378943
更新日期:2012-08-09 00:00:00
abstract::GVHD and tumor relapse are fundamental problems in allogeneic HSCT. Recent research has linked neovascularization to GVHD, tumor growth, and graft-versus-tumor (GVT) activity. Damage of the endothelium by the conditioning regimen provides the initiation stimulus for recruitment of donor-derived endothelial cells and t...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-10-312934
更新日期:2011-04-21 00:00:00
abstract::The histone deacetylase inhibitors (HDA-CIs) butyrate and trichostatin A activate gamma-globin expression via a p38 mitogen-activating protein kinase (MAPK)-dependent mechanism. We hypothesized that down-stream effectors of p38 MAPK, namely activating transcription factor-2 (ATF-2) and cyclic AMP response element (CRE...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2006-01-023713
更新日期:2006-11-15 00:00:00
abstract::The study of chemoattractant receptors on human monocytes had been limited by the lack of a radioligand suitable for use with the small numbers of cells routinely available from human donors. A new synthetic oligopeptide radioligand f[35S]met-leu-phe, with a higher specific radioactivity than was available with the tr...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1984-03-01 00:00:00
abstract::Interleukin-1 beta (IL-1 beta) converting enzyme (ICE) is a cysteine protease that specifically cleaves precursor IL-1 beta to its biologically active form. Recent studies have also implicated ICE in the induction of apoptosis in vertebrate cells. Because IL-1 plays a major role in acute myelogenous leukemia (AML) bla...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-12-15 00:00:00
abstract::Hypodiploidy <40 chromosomes is an uncommon genetic feature of acute lymphoblastic leukemia (ALL) in both children and adults. It has long been clear by cytogenetic analyses, and recently confirmed by mutational profiling, that these cases may be further subdivided into 2 subtypes: near-haploid ALL with 24 to 30 chrom...
journal_title:Blood
pub_type: 杂志文章,评审
doi:10.1182/blood-2016-10-743765
更新日期:2017-01-26 00:00:00
abstract::Notch is a major factor mediating interaction between hematopoietic progenitor cells (HPCs) and bone marrow stroma (BMS). However its contribution to dendritic cell (DC) differentiation is controversial. We found that main Notch ligands Delta-1 and Jagged-1 had the opposite effect on DC differentiation. Delta-1 promot...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2006-05-025601
更新日期:2007-01-15 00:00:00
abstract::Uniformly adopted response criteria are essential for assessment of therapies incorporating conventional chemotherapy and chemoimmunotherapy regimens. Recently, immunomodulatory agents, such as immune checkpoint inhibitors, have demonstrated impressive activity in a broad range of lymphoma histologies. However, these ...
journal_title:Blood
pub_type: 杂志文章,评审
doi:10.1182/blood-2016-05-718528
更新日期:2016-11-24 00:00:00
abstract::Retrovirus-mediated gene transfer into long-lived human pluripotent hematopoietic stem cells (HSCs) is a widely sought but elusive goal. A major problem is the quiescent nature of most HSCs, with the perceived requirement for ex vivo prestimulation in cytokines to induce stem cell cycling and allow stable gene integra...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract::Gene delivery via the hematopoietic stem cell (HSC) offers an attractive means to introduce antiviral genes into both T cells and macrophages for acquired immunodeficiency syndrome (AIDS) gene therapy. An amphotropic retroviral vector encoding a bicistronic gene coexpressing RevM10 and the murine CD8alpha' chain (lyt2...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1997-04-01 00:00:00
abstract::In vitro studies as well as clinical trials indicate that the cytokines granulocyte-macrophage colony-stimulating factor (GM-CSF) and granulocyte colony-stimulating factor (G-CSF) enhance the ability of neutrophils (polymorphonuclear leukocytes) to eliminate microbial organisms. Toll-like receptor (TLR) proteins, homo...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2002-09-01 00:00:00
abstract::Fetal/neonatal immune responses generally are considered to be immature and weaker than that of adults. We have studied the cord-blood T cells of newborns congenitally infected with Trypanosoma cruzi, the protozoan agent of Chagas disease. Our data demonstrate a predominant activation of CD8 T cells expressing activat...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2002-09-15 00:00:00
abstract::Production of a red blood cell's hemoglobin depends on mitochondrial heme synthesis. However, mature red blood cells are devoid of mitochondria and rely on glycolysis for ATP production. The molecular basis for the selective elimination of mitochondria from mature red blood cells remains controversial. Recent evidence...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2008-02-137398
更新日期:2008-08-15 00:00:00
abstract::Human platelets are aggregated and induced to release their granule contents and form thromboxane by peptides as short as 6-amino acid residues (SFLLRN) corresponding to the newly released N-terminus of the thrombin receptor that is cleaved by thrombin. Using washed platelets, we found that these responses to SFLLRN (...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1993-07-01 00:00:00
abstract::Tissue factor (TF), the cellular receptor for factor VIIa (FVIIa), besides initiating blood coagulation, is believed to play an important role in tissue repair, inflammation, angiogenesis, and tumor metastasis. Like TF, the chemokine interleukin-8 (IL-8) is shown to play a critical role in these processes. To elucidat...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-10-3417
更新日期:2004-04-15 00:00:00
abstract::Primary cutaneous lymphomas (PCLs) are clonal T- or B-cell neoplasms, which originate in the skin. In recent years, mast cells were described as regulators of the tumor microenvironment in different human malignancies. Here, we investigated the role of mast cells in the tumor microenvironment of PCL. We found signific...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2012-03-415638
更新日期:2012-09-06 00:00:00
abstract::In adult bone marrow, mature erythroblasts are produced within structures called erythroblastic islands and then cross the endothelial barrier to reach circulation. Erythroblastic islands are composed of a central macrophage surrounded by maturing erythroblasts. In this study, it is shown that erythroid cells, but not...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.v97.7.1968
更新日期:2001-04-01 00:00:00
abstract::Bone marrow CD34(+) cell apoptosis (annexin V), proliferation (Ki-67), and Bcl-2-related protein expression was evaluated by flow cytometry in 102 patients with myelodysplastic syndrome (MDS) and acute myeloid leukemia secondary to MDS (MDS-AML) and in 30 normal donors (NBM). Apoptosis was significantly increased in r...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00