Abstract:
:Leukocyte extravasation involves interdependent signaling pathways underlying the complex dynamics of firm adhesion, crawling, and diapedesis. While signal transduction by agonist-bound chemokine receptors plays a central role in the above responses, it is unclear how it contributes to the sustained and concurrent nature of such responses, given the rapid kinetics of chemokine-induced trimeric G protein coupling and homologous desensitization. Our findings unveil a novel role of beta-arrestins in regulating the activation of signaling pathways underlying discrete integrin-mediated steps in CXCR2-driven leukocyte extravasation. By combining in vivo approaches in beta-arrestin knockout mice with in vitro studies in engineered cellular models, we show that membrane-recruited beta-arrestin 2 is required for the onset and maintenance of shear stress-resistant leukocyte adhesion mediated by both beta(1) and beta(2) integrins. While both beta-arrestin isoforms are required for rapid keratinocyte-derived chemokine (KC)-induced arrest onto limiting amounts of vascular cell adhesion molecule-1 (VCAM-1), adhesion strengthening under shear is selectively dependent on beta-arrestin 2. The latter synergizes with phospholipase C in promoting activation of Rap1A and B, both of which co-operatively control subsecond adhesion as well as postarrest adhesion stabilization. Thus, receptor-induced Galpha(i) and beta-arrestins act sequentially and in spatially distinct compartments to promote optimal KC-induced integrin-dependent adhesion during leukocyte extravasation.
journal_name
Bloodjournal_title
Bloodauthors
Molteni R,Crespo CL,Feigelson S,Moser C,Fabbri M,Grabovsky V,Krombach F,Laudanna C,Alon R,Pardi Rdoi
10.1182/blood-2008-10-183699subject
Has Abstractpub_date
2009-07-30 00:00:00pages
1073-82issue
5eissn
0006-4971issn
1528-0020pii
blood-2008-10-183699journal_volume
114pub_type
杂志文章相关文献
BLOOD文献大全abstract::The transcription factor KLF4 may act both as an oncogene and a tumor suppressor in a tissue-depending manner. In T- and pre-B-cell lymphoma, KLF4 was found to act as tumor suppressor. We found the KLF4 promoter methylated in B-cell lymphoma cell lines and in primary cases of B-cell lymphomas, namely, follicular lymph...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-12-256446
更新日期:2010-09-02 00:00:00
abstract::We have identified a distinct population of colony-forming cells that give rise to mononuclear cells expressing an enzyme marker and other features of the osteoclast in bone marrow cultures stimulated by conditioned medium of a murine tumor cell line. These colony-forming cells were defined as osteoclast colony-formin...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
abstract::Atypical hemolytic uremic syndrome (aHUS) is associated with complement system dysregulation, and more than 25% of pediatric aHUS cases are linked to mutations in complement factor H (CFH) or CFH autoantibodies. The observation of thrombocytopenia and platelet-rich thrombi in the glomerular microvasculature indicates ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-03-205096
更新日期:2009-11-12 00:00:00
abstract::Airway dendritic cells (DCs) are held responsible for inducing sensitization to inhaled antigen, leading to eosinophilic airway inflammation, typical of asthma. However, less information is available about the role of these cells in ongoing inflammation. In a mouse model of asthma, sensitization to ovalbumin (OVA) was...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2002-03-0673
更新日期:2002-11-15 00:00:00
abstract::Neutrophils from healthy elderly donors generate significantly less diacylglycerol (DAG) and inositol triphosphate (IP3) than neutrophils from young donors, following stimulation by the chemotactic peptide, formyl-methionyl-leucylphenylalanine (FMLP). The defect in signal transduction occurred at a point proximal to t...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::Disseminated intravascular coagulation (DIC) is a condition characterized by systemic activation of coagulation, potentially leading to thrombotic obstruction of small and midsize vessels, thereby contributing to organ dysfunction. At the same time, ongoing consumption of platelets and coagulation proteins results in ...
journal_title:Blood
pub_type: 杂志文章,评审
doi:10.1182/blood-2017-10-804096
更新日期:2018-02-22 00:00:00
abstract::Kinetic studies have been carried out to investigate the functional heterogeneity previously observed in populations of human marrow or peripheral blood cells separated by velocity sedimentation. The results obtained confirm the earlier results, in that slowly-sedimenting cells were found to stimulate both colony form...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1975-06-01 00:00:00
abstract::High-pressure liquid chromatography analysis of polyamines in bone narrow from leukemic and nonleukemic subjects demonstrated increased concentrations of putrescine, spermidine, and spermine associated with increased cellularity. The most striking abnormality was the marked elevation of putrescine. Bone marrow polyami...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1976-04-01 00:00:00
abstract::We have developed a novel cotransplantation system in which gene-transduced human CD34+ progenitor cells are transplanted into immunodeficient (bnx) mice together with primary human bone marrow (BM) stromal cells engineered to produce human interleukin-3 (IL-3). The IL-3-secreting stroma produced sustained circulating...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1994-05-15 00:00:00
abstract::Human parvovirus B19 (B19V) infection shows a strong erythroid tropism and drastically destroys erythroid progenitor cells, thus leading to most of the disease outcomes associated with B19V infection. In this study, we systematically examined the 3 B19V nonstructural proteins, 7.5 kDa, 11 kDa, and NS1, for their funct...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-04-215756
更新日期:2010-02-04 00:00:00
abstract::CD4+CD25+ regulatory T (Treg) cells are potent modulators of alloimmune responses. In murine models of allogeneic bone marrow transplantation, adoptive transfer of donor CD4+CD25+ Treg cells protects recipient mice from lethal acute graft-versus-host disease (aGVHD) induced by donor CD4+CD25- T cells. Here we examined...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-05-2044
更新日期:2005-03-01 00:00:00
abstract::Von Willebrand disease (VWD)-type 2B originates from a gain-of-function mutation in von Willebrand factor (VWF), resulting in enhanced platelet binding. Clinical manifestations include increased bleeding tendency, loss of large multimers, thrombocytopenia, and circulating platelet aggregates. We developed a mouse mode...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-11-254193
更新日期:2010-06-10 00:00:00
abstract::A t(14;18) (q32;q21) chromosome translocation is closely associated with the follicular lymphoma, which is prevalent in the United States, and the t(14;18) causes the juxtaposition of a bcl-2 gene on chromosome 18 with an immunoglobulin heavy-chain gene locus on chromosome 14. Genomic DNAs from 30 Japanese patients wi...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-02-15 00:00:00
abstract::In this issue of Blood, Martin et al report poor outcomes for ibrutinib-refractory patients with mantle cell lymphoma (MCL). MCL, an uncommon B-cell lymphoma driven by dysregulated cyclin D1, responds well to initial therapy but is destined to relapse. Subsequent single-agent treatments had modest response rates and d...
journal_title:Blood
pub_type: 评论,杂志文章
doi:10.1182/blood-2016-02-694877
更新日期:2016-03-24 00:00:00
abstract::Burkitt lymphoma (BL) is classified into 3 clinical subsets: endemic, sporadic, and immunodeficiency-associated BL. So far, possible differences in their gene expression profiles (GEPs) have not been investigated. We studied GEPs of BL subtypes, other B-cell lymphomas, and B lymphocytes; first, we found that BL is a u...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-08-301556
更新日期:2011-03-31 00:00:00
abstract::Interleukin-2 (IL-2) withdrawal is a physiologic process inducing cell death in activated T lymphocytes. Glucocorticoid-induced leucine zipper (GILZ) has recently been identified as a protein modulating T-cell receptor activation by repressing various signaling pathways. We report here that IL-2 deprivation leads to e...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-12-4295
更新日期:2004-07-01 00:00:00
abstract::In 33 patients with thalassemia and idiopathic hemochromatosis, plasma ferritin protein levels ranged from 36 to 5,850 micrograms/L. The iron content of this ferritin as determined by immunoprecipitation ranged from undetectable amounts to 507 micrograms/L. The mean iron content of ferritin protein in those and other ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract::Interleukin-3 (IL-3) is a hematopoietic growth factor that regulates the differentiation of multilineage and committed progenitor cells and the functions of some mature blood cells. The expression of human IL-3 appears to be restricted to stimulated T lymphocytes. We have investigated the kinetics and mechanisms invol...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1991-03-15 00:00:00
abstract::Two families of Epstein-Barr virus (EBV), type A and type B, have been defined on the basis of sequence divergence in the EBNA-2 gene. Type A EBV immortalizes B cells more efficiently in vitro and infects immunocompetent individuals more commonly than type B EBV. However, increased rates of infection by type B EBV are...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-03-01 00:00:00
abstract::Glanzmann thrombasthenia is an autosomal recessive disorder of the platelet glycoproteins (GP) IIb and IIIa. These glycoproteins normally serve as receptors for other adhesive glycoproteins, including fibrinogen, von Willebrand factor, and fibronectin. Most patients affected by Glanzmann thrombasthenia have low levels...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1988-11-01 00:00:00
abstract::A human malignant melanoma cell line (M3Dau) was observed by electron microscopy to interact directly with human platelets and induced platelet aggregation. Fab fragments of a monoclonal antibody MoAb (LYP18), directed against the platelet glycoprotein (GP) IIb-IIIa complex, inhibited platelet-melanoma interactions an...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract::In this study we investigated telomere restriction fragment (TRF) length in a panel of mature B-cell lymphoproliferative disorders (MBCLDs) and correlated this parameter with histology and histopathogenesis in relation to the germinal center (GC). We assessed 123 MBCLD samples containing 80% or more tumor cells. TRF l...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-12-4412
更新日期:2004-06-15 00:00:00
abstract::The Wiskott-Aldrich syndrome (WAS) is a severe immunodeficiency and platelet deficiency disease arising from mutation(s) in the WASP gene, which in normal cells encodes an intracellular protein able to interact with other proteins relevant to the control of cytoskeleton organization. Immunodeficiency is mainly due to ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1997-10-15 00:00:00
abstract::Type I interferons (IFNs-alpha and IFN-beta) bind to a common receptor to exert strong antiproliferative activity on a broad range of cell types, including interleukin-6 (IL-6)-dependent myeloma cells. In this study, we investigated the effect of IFN-beta pretreatment on IL-6-stimulated mitogenic signaling in the huma...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract::In addition to its importance in transfusion, Kell protein is a member of the M13 family of zinc endopeptidases and functions as an endothelin-3-converting enzyme. To obtain information on the structure of Kell protein we built a model based on the crystal structure of the ectodomain of neutral endopeptidase 24.11 (NE...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-05-1564
更新日期:2003-10-15 00:00:00
abstract::Blockade of the CD40/CD154 signal is a potential immunomodulatory strategy for T-cell-mediated diseases. As a part of a phase 1, multicenter, dose-escalating trial of humanized monoclonal antibody to CD154 (IDEC-131/E6040) in patients with refractory immune thrombocytopenic purpura (ITP), the autoimmune response to gl...
journal_title:Blood
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1182/blood-2003-06-2167
更新日期:2004-02-15 00:00:00
abstract::The clinical use of intravenous immunoglobulin (IVIg) based on its immunomodulatory and anti-inflammatory potential remains an ongoing challenge. Fcgamma receptor-mediated effects of IVIg, although well elucidated in certain pathologies, cannot entirely account for its proven benefit in several autoimmune disorders me...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2007-03-079947
更新日期:2008-01-15 00:00:00
abstract::In this issue of Blood, Vérollet et al show that expression of the HIV-1–derived protein Nef alters the migratory mode adopted by macrophages, enhancing macrophage tissue infiltration and explaining the observed accumulation of tissue-resident macrophages in some HIV-infected patients. ...
journal_title:Blood
pub_type: 评论,杂志文章
doi:10.1182/blood-2015-01-618983
更新日期:2015-03-05 00:00:00
abstract::T cells are known to interact cooperatively with monocytes to produce Colony-Stimulating Factors (CSF), although T cell-mediated signals leading to CSF secretion by monocytes are not completely understood. We have made use of Northern blot hybridization and specific bioassays to study the effects of the T cell product...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-04-01 00:00:00
abstract::As tyrosine kinase inhibitors (TKIs) fail to induce long-term response in blast crisis chronic myelogenous leukemia (CML-BC) and Philadelphia chromosome-positive (Ph(+)) acute lymphoblastic leukemia (ALL), novel therapies targeting leukemia-dysregulated pathways are necessary. Exportin-1 (XPO1), also known as chromoso...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2013-04-495374
更新日期:2013-10-24 00:00:00