Abstract:
:Platelet factor 4 (PF4) serves as a lineage-specific marker of megakaryocyte development. We previously identified two positively acting sequences in the human platelet factor 4 (hPF4) gene promoter that synergized to drive high-level luciferase reporter gene expression in vitro. Using portions of the hPF4 5'-flanking region linked to the lacZ reporter gene, we observed in this investigation that constructs with -245 bp of 5'-flanking region were more active than constructs with -2 kb of 5'-flanking region in vitro. We created two independent transgenic mouse lines with a -245-bp hPF4/lacZ construct. Cells from these mice were tested for beta-galactosidase (beta-gal) expression at the mRNA level by Northern blot and semiquantitative reverse transcription polymerase chain reaction (RT-PCR) and at the protein level by immunohistochemistry assay. Mice from one line showed beta-gal expression specifically in all megakaryocytes of all ploidy classes from bone marrow and in platelets. Expression level was comparable to that driven by the 1.1-kb rat PF4 promoter in other transgenic mouse lines. Those in the second line showed no beta-gal expression in megakaryocytes, platelets, or any of the eight organs tested. The -245-bp hPF4 promoter is capable of driving reporter gene expression in a megakaryocyte-specific manner in transgenic mice. The small size of this megakaryocyte-specific promoter is compatible with that required in some viral vectors and may provide a model for targeting gene expression to megakaryocytes.
journal_name
Bloodjournal_title
Bloodauthors
Cui Z,Reilly MP,Surrey S,Schwartz E,McKenzie SEsubject
Has Abstractpub_date
1998-04-01 00:00:00pages
2326-33issue
7eissn
0006-4971issn
1528-0020journal_volume
91pub_type
杂志文章相关文献
BLOOD文献大全abstract::Myeloperoxidase (MPO) is a heme containing enzyme involved in the oxygen-dependent microbicidal activity of human polymorphonuclear leukocytes (PMN). Complete hereditary and acquired MPO deficiencies are defined as lack of peroxidase activity in PMN. Using this criterion, we studied a patient with complete hereditary ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-05-15 00:00:00
abstract::Autologous stem-cell transplantation has become a widely used therapy in Hodgkin's disease (HD). To appreciate the early and late risks associated with this procedure, its lethal toxicity and effects on the incidence of secondary cancers were studied. Data related to 467 French patients grafted from 1982 to 1995 for p...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1998-09-15 00:00:00
abstract::Previous results have demonstrated that anti-D therapy in children with chronic auto-immune thrombocytopenic purpura (AITP) induced a significant increase in several pro- and anti-inflammatory plasma cytokines within 2 hours of administration. To investigate the biologic basis of these early in vivo responses, we deve...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-04-1029
更新日期:2003-10-15 00:00:00
abstract::CD4(+)CD25(+)FOXP3(+) regulatory T cells (CD4(+) Treg cells) are thought to differentiate in the thymus and immigrate from the thymus to the periphery. Treg cells can regulate both acquired and innate immunity through multiple modes of suppression. The cross-talk between Treg cells and targeted cells, such as antigen-...
journal_title:Blood
pub_type: 杂志文章,评审
doi:10.1182/blood-2006-01-0177
更新日期:2006-07-15 00:00:00
abstract::Adhesive interactions between circulating sickle red blood cells (RBCs), leukocytes, and endothelial cells are major pathophysiologic events in sickle cell disease (SCD). To develop new therapeutics that efficiently inhibit adhesive interactions, we generated an anti-P-selectin aptamer and examined its effects on cell...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-05-285718
更新日期:2011-01-13 00:00:00
abstract::Elevated plasma clot lysis time (CLT) increases risk of venous and arterial thrombosis. It is unclear which fibrinolytic factors contribute to thrombosis risk. In 743 healthy control subjects we investigated determinants of CLT. By comparison with 770 thrombosis patients, we assessed plasma levels of fibrinolytic prot...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-02-267740
更新日期:2010-07-08 00:00:00
abstract::Mast cells play a critical role in innate immunity, allergy, and autoimmune diseases. The receptor/ligand interactions that mediate mast cell activation are poorly defined. The alpha2beta1 integrin, a receptor for collagens, laminins, decorin, E-cadherin, matrix metalloproteinase-1 (MMP-1), endorepellin, and several v...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2005-06-2218
更新日期:2006-01-01 00:00:00
abstract::Transforming growth factor-beta1 (TGF-beta1) has potent physiologic and pathologic effects on a variety of cell types at subnanomolar concentrations. Platelets contain 40 times as much TGF-beta1 as other cells and secrete it as an inactive (latent) form in complex with latency-associated peptide (LAP), which is disulf...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2008-04-151753
更新日期:2008-11-01 00:00:00
abstract::Rituximab, a monoclonal antibody that targets CD20 on B cells, is now central to the treatment of a variety of malignant and autoimmune disorders. Despite this success, a substantial proportion of B-cell lymphomas are unresponsive or develop resistance, hence more potent anti-CD20 monoclonal antibodies (mAbs) are cont...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-01-263533
更新日期:2010-06-24 00:00:00
abstract::Lymphomas afflict all age groups of people, with certain types demonstrating a female predilection in adolescents and young adults. A proportion of lymphomas that are diagnosed in this population demographic occur in the setting of pregnancy. Most of these behave aggressively at presentation and require immediate or u...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.2019000961
更新日期:2020-11-05 00:00:00
abstract::In utero transplantation (IUT) is becoming a viable option for the treatment of various immune and metabolic disorders diagnosed early in gestation. In this study, donor fetal liver cells had a 10-fold competitive engraftment advantage relative to adult bone marrow in allogeneic fetal severe combined immunodeficient (...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.v99.5.1870
更新日期:2002-03-01 00:00:00
abstract::Gossypin, a flavone originally isolated from Hibiscus vitifolius, has been shown to suppress angiogenesis, inflammation, and carcinogenesis. The mechanisms of these activities, however, are unknown. Because nuclear factor-kappaB (NF-kappaB) is associated with inflammation, carcinogenesis, hyperproliferation, invasion,...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2007-01-067256
更新日期:2007-06-15 00:00:00
abstract::In patients with chronic lymphocytic leukemia (CLL), lenalidomide can promote humoral immune responses but also induces a distinct disease-specific toxicity of tumor flare and cytokine release. These CLL-specific events result from increased expression of costimulatory molecules on B cells. Here we demonstrate that le...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2010-11-315705
更新日期:2011-04-21 00:00:00
abstract::The reduction of nitroblue tetrazolium dye by human neutrophils was measured in the presence of serum in which the complement system had been activated through the alternate pathway by interaction with inulin. Neutrophils incubated with serum inulin supernatants reduced the dye and showed a general increase in oxidati...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1975-06-01 00:00:00
abstract::To test the hypothesis that skeletal muscle myosins can directly influence blood coagulation and thrombosis, ex vivo studies of the effects of myosin on thrombogenesis in fresh human blood were conducted. Addition of myosin to blood augmented the thrombotic responses of human blood flowing over collagen-coated surface...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2016-03-707679
更新日期:2016-10-06 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::Twenty-four adults with ALL were treated with AMSA alone or in combination. Twenty-two were treated at time of relapse and two patients after failing primary induction therapy. All had been treated with anthracyclines prior to receiving AMSA. Of the 22 patients with ALL in relapse, 4 achieved a complete remission. Two...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1982-11-01 00:00:00
abstract::Adenosine deaminase (ADA) deficiency is a disorder of the purine metabolism leading to combined immunodeficiency and systemic alterations, including skeletal abnormalities. We report that ADA deficiency in mice causes a specific bone phenotype characterized by alterations of structural properties and impaired mechanic...
journal_title:Blood
pub_type: 杂志文章,多中心研究
doi:10.1182/blood-2009-03-209221
更新日期:2009-10-08 00:00:00
abstract::Zosuquidar, which modulates P-glycoprotein (P-gp) with minimal delay of anthracycline clearance, may reverse P-gp-mediated resistance in acute myeloid leukemia without increased toxicity. A total of 449 adults older than 60 years with acute myeloid leukemia or high-risk myelodysplastic syndrome enrolled in a randomize...
journal_title:Blood
pub_type: 杂志文章,随机对照试验
doi:10.1182/blood-2010-04-277269
更新日期:2010-11-18 00:00:00
abstract::Autoimmune lymphoproliferative syndrome (ALPS) is a disorder of abnormal lymphocyte survival caused by defective Fas-mediated apoptosis, leading to lymphadenopathy, hepatosplenomegaly, and an increased number of double-negative T cells (DNTs). Treatment options for patients with ALPS are limited. Rapamycin has been sh...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2006-01-010124
更新日期:2006-09-15 00:00:00
abstract::Studies of neutrophil nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activation in a cell-free system showed that the low molecular-weight guanosine triphosphatase (GTPase) Rac was required, and that Rap1a may participate in activation of the catalytic complex. Full-length posttranslationally modified Rac...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-02-01 00:00:00
abstract::Deferoxamine (DFO) is a high-affinity Fe (III) chelator produced by Streptomyces pilosus. DFO is used clinically to remove iron from patients with iron overload disorders. Orally administered DFO cannot be absorbed, and therefore it must be injected. Here we show that DFO induces ferritin degradation in lysosomes thro...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-05-224188
更新日期:2009-11-12 00:00:00
abstract::Unstained human eosinophils exhibit unusually bright autofluorescence, which allows them to be distinguished from other leukocytes using fluorescence microscopy. Eosinophil fluorescence is associated with the cytoplasmic granules of the cells. Eosinophil granule extracts, containing an as-yet-undefined eosinophil fluo...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1981-06-01 00:00:00
abstract::The phagocytic function of macrophages plays a pivotal role in eliminating apoptotic cells and invading pathogens. Evidence implicating plasminogen (Plg), the zymogen of plasmin, in phagocytosis is extremely limited with the most recent in vitro study showing that plasmin acts on prey cells rather than on macrophages....
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2014-01-549659
更新日期:2014-07-31 00:00:00
abstract::Monocyte and macrophage Fc gamma receptors are important components in the recognition of IgG-coated cells and IgG-containing immune complexes. Two proteins have been identified on human peripheral blood monocytes that can function as Fc gamma receptors, Fc gamma RI (70 Kd) and Fc gamma RII (40 Kd). We studied the rol...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-08-15 00:00:00
abstract::The physical interactions between B cells and stromal cells from the lymphoid tissue microenvironment are critical to the survival of normal and malignant B cells. They are principally mediated by integrins expressed on B cells and counterreceptors on stromal cells. Specifically, alpha4beta1 integrin engagement rescue...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2002-05-1519
更新日期:2003-02-01 00:00:00
abstract::We used restriction endonuclease analysis to determine the incidence of alpha-thalassemia in two Mediterranean islands. In a random population sample, the gene frequency of deletion-type alpha-thalassemia-2 (-alpha) was 0.18 in Sardinians and 0.07 in Greek Cypriots. All cases were the rightward crossover type. From th...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1982-08-01 00:00:00
abstract::Highly purified natural killer (NK) cell suspensions were tested for their capacity to release colony-stimulating activity (CSA) in vitro. NK cell suspensions comprised primarily CD16+ cells and were devoid of CD3+ T cells, CD15+ monocytes, and of B cells. CSA was detected in the NK cell supernatants and sustained the...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1989-07-01 00:00:00
abstract::Although phospholipid scramblase 1 (PLSCR1) was originally identified based on its capacity to promote transbilayer movement of membrane phospholipids, subsequent studies also provided evidence for its role in cell proliferation, maturation, and apoptosis. In this report, we investigate the potential role of PLSCR1 in...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-04-1630
更新日期:2004-12-01 00:00:00
abstract::The receptor for hyaluronic acid-mediated motility (RHAMM/CD168) has been described as a leukemia-associated antigen. To define T-cell epitopes of RHAMM/CD168 toward specific immunotherapies for acute myeloid leukemia (AML), 10 potential HLA-A2-binding RHAMM/CD168 peptides (R1 to R10) were synthesized based on compute...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-12-4787
更新日期:2005-08-01 00:00:00