Abstract:
:Patients with immune thrombocytopenia (ITP) commonly have antiplatelet antibodies that cause thrombocytopenia through Fcγ receptors (FcγRs). Antibodies specific for FcγRs, designed to inhibit antibody-FcγR interaction, had been shown to improve ITP in refractory human patients. However, the development of such FcγR-specific antibodies has stalled because of adverse events, a phenomenon recapitulated in mouse models. One hypothesis behind these adverse events involved the function of the Fc region of the antibody, which engages FcγRs, leading to inflammatory responses. Unfortunately, inhibition of Fc function by deglycosylation failed to prevent this inflammatory response. In this work, we hypothesize that the bivalent antigen-binding fragment regions of immunoglobulin G are sufficient to trigger adverse events and have reasoned that designing a monovalent targeting strategy could circumvent the inflammatory response. To this end, we generated a fusion protein comprising a monovalent human FcγRIIIA-specific antibody linked in tandem to human serum albumin, which retained FcγR-binding activity in vitro. To evaluate clinically relevant in vivo FcγR-blocking function and inflammatory effects, we generated a murine version targeting the murine FcγRIII linked to murine albumin in a passive murine ITP model. Monovalent blocking of FcγR function dramatically inhibited antibody-dependent murine ITP and successfully circumvented the inflammatory response as assessed by changes in body temperature, basophil activation, and basophil depletion. Consistent with our hypothesis, in vivo cross-linking of the fusion protein induced these inflammatory effects, recapitulating the adverse events of the parent antibody. Thus, monovalent blocking of FcγR function demonstrates a proof of concept to successfully treat FcγR-mediated autoimmune diseases.
journal_name
Bloodjournal_title
Bloodauthors
Yu X,Menard M,Prechl J,Bhakta V,Sheffield WP,Lazarus AHdoi
10.1182/blood-2015-08-664656subject
Has Abstractpub_date
2016-01-07 00:00:00pages
132-8issue
1eissn
0006-4971issn
1528-0020pii
blood-2015-08-664656journal_volume
127pub_type
杂志文章相关文献
BLOOD文献大全abstract::The expression of tumor-associated antigens (TAAs) might play a critical role in the control of minimal residual disease (MRD) in acute myeloid leukemia (AML), and therefore might be associated with clinical outcome in AML. In a DNA microarray analysis of 116 AML samples, we found a significant correlation between hig...
journal_title:Blood
pub_type: 临床试验,杂志文章
doi:10.1182/blood-2006-01-023127
更新日期:2006-12-15 00:00:00
abstract::We here report the initiation of hematopoietic recovery in congenitally hypoplastic S1/S1d mice by the cytotoxic ablation of cells bearing the natural killer (NK) phenotype (NK 1.1+). The most striking finding was the early several-fold increase in the cycling fraction of stem and progenitor cells (with the exception ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1991-09-15 00:00:00
abstract::In this issue of Blood, Acharya and colleagues provide evidence for the role of angiogenesis in the pathophysiology of hemophilic joint disease. Is this the linchpin that unravels this important clinical condition or merely a cog in a not so stepwise process? ...
journal_title:Blood
pub_type: 评论,杂志文章
doi:10.1182/blood-2011-01-327312
更新日期:2011-02-24 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::We have performed a retrospective analysis of the development of T- and B-cell functions after HLA-nonidentical T-cell-depleted bone marrow transplantation (BMT) performed in 193 patients with severe combined immunodeficiency (SCID) at 18 European centers between December 1982 and December 31, 1993. One hundred sixtee...
journal_title:Blood
pub_type: 杂志文章,多中心研究
doi:
更新日期:1998-05-15 00:00:00
abstract::We describe the cloning and characterization of Siglec-H, a novel murine CD33-related siglec-like molecule with 2 immunoglobulin domains. Unlike other CD33-related siglecs, Siglec-H lacks tyrosine-based signaling motifs in its cytoplasmic tail. Although Siglec-H has the typical structural features required for sialic ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2005-09-3842
更新日期:2006-05-01 00:00:00
abstract::As a promising new class of anticancer drugs, camptothecins have advanced to the forefront of several areas of therapeutic and developmental chemotherapy. In the present study, we report that NSC606985, a rarely studied camptothecin analog, induces apoptosis in acute myeloid leukemia (AML) cells NB4 and U937 and inhib...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-10-4011
更新日期:2005-05-01 00:00:00
abstract::The mutation status and usage of specific VH genes such as V3-21 and V1-69 are potentially independent pathogenic and prognostic factors in chronic lymphocytic leukemia (CLL). To investigate the role of antigenic stimulation, we analyzed the expression of genes involved in B-cell receptor (BCR) signaling/activation, c...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2005-04-1483
更新日期:2006-03-01 00:00:00
abstract::Polymorphonuclear neutrophils (PMN) contain multiple distinct secretory compartments that are sequentially mobilized during cell activation. Complement receptor type 1 (CR1) is a marker for a readily mobilizable secretory vesicle compartment, which can undergo exocytic fusion with the plasma membrane independently of ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1998-07-01 00:00:00
abstract::Radioimmunotherapy (RIT) has emerged as an effective treatment for lymphoma, however the underlying mechanisms are poorly understood. We therefore investigated the relative contributions of antibody and targeted radiation to the clearance of tumor in vivo, using 2 different syngeneic murine B-cell lymphoma models. Alt...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-06-2037
更新日期:2004-02-15 00:00:00
abstract::Acute chest syndrome (ACS) is a leading cause of death in sickle cell disease (SCD). Our previous work showed that hypoxia enhances the ability of sickle erythrocytes to adhere to human microvessel endothelium via interaction between very late activation antigen-4 (VLA4) expressed on sickle erythrocytes and the endoth...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1999-09-01 00:00:00
abstract::The effect of FLT3/FLK2 ligand (FL) on the growth of primitive hematopoietic cells was investigated using ThyloSca1+ stem cells. FL was observed to interact with a variety of factors to initiate colony formation by stem cells. When stem cells were stimulated in liquid culture with FL plus interleukin (IL)-3, IL-6, gra...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-05-15 00:00:00
abstract::ETS2 and ERG are transcription factors, encoded on human chromosome 21 (Hsa21), that have been implicated in human cancer. People with Down syndrome (DS), who are trisomic for Hsa21, are predisposed to acute megakaryoblastic leukemia (AMKL). DS-AMKL blasts harbor a mutation in GATA1, which leads to loss of full-length...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2008-08-174813
更新日期:2009-04-02 00:00:00
abstract::Essential thrombocythemia (ET) and primary myelofibrosis (PMF) are chronic diseases characterized by clonal hematopoiesis and hyperproliferation of terminally differentiated myeloid cells. The disease is driven by somatic mutations in exon 9 of CALR or exon 10 of MPL or JAK2-V617F in >90% of the cases, whereas the rem...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2015-07-661835
更新日期:2016-01-21 00:00:00
abstract::Cylindromatosis (CYLD) is a deubiquitinase that was initially identified as a tumor suppressor and has recently been implicated in diverse normal physiologic processes. In this study, we have investigated the involvement of CYLD in angiogenesis, the formation of new blood vessels from preexisting ones. We find that kn...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-10-248526
更新日期:2010-05-20 00:00:00
abstract::In previous experimental animal studies it has been demonstrated that antibody depletion is not followed by increased antibody synthesis. To assess whether these results are conferrable to antibody-depleted humans, we measured free light chains (flcs) as markers of current antibody synthesis in 8 patients treated with...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2002-01-0128
更新日期:2002-07-01 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::Cell-cell contact-dependent mechanisms that modulate proliferation and/or differentiation in the context of hematopoiesis include mechanisms characteristic of the interactions between members of the Notch family of signal transduction molecules and their ligands. Whereas Notch family members and their ligands clearly ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2007-11-115204
更新日期:2008-07-15 00:00:00
abstract::Among the most striking morphological features of acute nonlymphoblastic leukemias (ANLL) is the occurrence of eosinophilic cytoplasmic inclusions known as Auer rods on Auer bodies. We examined immature myeloid cells from the peripheral blood of 9 human fetuses of 16-19 wk gestation for the presence of such structures...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1983-03-01 00:00:00
abstract::E-proteins are widely expressed basic helix-loop-helix (HLH) transcription factors that regulate differentiation in many cell lineages, including lymphoid, muscle, and neuronal cells. E-protein function is controlled by HLH inhibitors such as Id and SCL/TAL1 proteins, which recently have been suggested to play a role ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2007-01-069914
更新日期:2007-10-01 00:00:00
abstract::We retrospectively analyzed outcomes among 567 patients with hematologic malignancies who had hematopoietic cell transplantation from human leukocyte antigen-identical sibling donors between 2001 and 2007 for a correlation between statin use and risk of graft-versus-host disease (GVHD). Compared with allografts where ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2009-08-240358
更新日期:2010-02-11 00:00:00
abstract::Monocytes/macrophages exert a series of important functions in vivo. To facilitate detailed investigation of their functional capacity and the mechanism leading to their differentiation, several cell lines have been established from primary material. We present here a new human monoblastic cell line, designated UG3. U...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1998-06-15 00:00:00
abstract::Understanding the molecular pathogenesis of lymphoma has led to paradigm-changing treatment opportunities. One example involves tailoring specific agents based on the cell of origin in aggressive lymphomas. Germinal center (GC)-derived diffuse large B-cell lymphoma (DLBCL) is known to be driven by an addiction to Bcl6...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2013-02-485441
更新日期:2013-09-19 00:00:00
abstract::To study outcomes of adults with idiopathic thrombocytopenic purpura (ITP), we performed a follow-up study in a cohort of 152 consecutive patients who were treated according to a well-defined algorithm. Long-term outcomes were determined relative to the response 2 years after diagnosis, because most (93%) patients who...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.v97.9.2549
更新日期:2001-05-01 00:00:00
abstract::Sympathetic axons embedded in a few arterioles and vasa vasora were recently shown to store tissue plasminogen activator (t-PA) in vesicles. But the extension of such t-PA axons to arteries and arterioles throughout the organism has not been verified. Confirmation of this anatomy would identify a second significant so...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2005-12-4884
更新日期:2006-07-01 00:00:00
abstract::An acquired gain-of-function mutation in the Janus kinase 2 (JAK2-V617F) is frequently found in patients with myeloproliferative disorders (MPDs). To test the hypothesis that JAK2-V617F is the disease-initiating mutation, we examined whether all cells of clonal origin carry the JAK2-V617F mutation. Using allele-specif...
journal_title:Blood
pub_type: 临床试验,杂志文章
doi:10.1182/blood-2005-11-009605
更新日期:2006-08-15 00:00:00
abstract::Infections during granulocytopenia are major complications of autologous bone marrow transplantation (ABMT). Since recombinant human granulocyte-macrophage colony-stimulating factor (rhuGM-CSF) has proved to accelerate bone marrow recovery after cytostatic chemotherapy, we studied its effects on hematopoietic regenera...
journal_title:Blood
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:
更新日期:1992-11-01 00:00:00
abstract::Human endothelial cells release two forms of a plasminogen activator-specific inhibitor: an active form that readily binds to and inhibits plasminogen activators and an inactive or latent form that has no anti-activator activity but which can be activated by denaturation. Latent and active forms of plasminogen activat...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1986-05-01 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::The recombinant thrombopoietins have been shown to be effective stimulators of platelet production in cancer patients. It was therefore of interest to determine if one of these, pegylated recombinant human megakaryocyte growth and development factor (PEG-rHuMGDF), could be used to increase platelet counts and conseque...
journal_title:Blood
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1182/blood.v98.5.1339
更新日期:2001-09-01 00:00:00