Abstract:
BACKGROUND:Specific tumor cell recognition is required for optimal tumor directed therapy. Lymphokine activated killer (LAK) cells are able to recognize tumor targets specifically because LAK cells can distinguish between normal and tumor cells. This study was aimed at analyzing receptor molecules on tumor cells and their counter-receptor molecules on LAK cells. Cell lines which differ in the pathway by which LAK cell lysis is mediated are important for an analysis of receptor molecules. METHODS:We adapted a novel method for efficient production of K562 clones in order to analyze the mechanisms by which target and effector receptor molecules mediate different LAK cell interactions. K562 cells were exposed to ethyl methanesulfonate (EMS) for mutagenization and addition of two rounds of irradiated LAK cells. Prior data demonstrated that irradiation does not effect cytolysis. Surviving cells were plated in methylcellulose and single colonies were obtained after ten days. Cells were washed, resuspended in medium, expanded and tested as targets in a 51Cr-release assay. RESULTS:With this procedure a variety of clones could be generated easily and time-savingly. All twelve clones expressed the bcr/abl transcript, as determined by PCR, and were sensitive to LAK cell lysis. However, cell blockage studies revealed that K562 clones were generated with LAK cell recognition differing from parental K562. Antibody blockage showed that lysis of clone 5 (LEF 5) is partially mediated via the LFA-1/ICAM-1 pathway. ICAM-1 expression of this clone was similar to expression on K562, as determined by flow cytometry. CONCLUSIONS:These clones are of great value for studying the receptor molecules involved in LAK--tumor cell interactions.
journal_name
Haematologicajournal_title
Haematologicaauthors
Lefterova P,Negrin R,Neubauer A,Huhn D,Blume K,Schmidt-Wolf Isubject
Has Abstractpub_date
1993-11-01 00:00:00pages
353-8issue
6eissn
0390-6078issn
1592-8721journal_volume
78pub_type
杂志文章相关文献
HAEMATOLOGICA文献大全abstract::We report on a patient affected by multicentric Castleman's disease who developed an acute immunohemolytic anemia due to warm antibody. The clinical course was characterized by refractoriness to the steroidal treatment and by a dramatic improvement of the hematological and objective picture following combination chemo...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::Effects of angiotensin (Ang)-(1-7), an AngII metabolite, on bone marrow-derived hematopoietic cells were studied. We identified Ang-(1-7) to stimulate proliferation of human CD34(+) and mononuclear cells in vitro. Under in vivo conditions, we monitored proliferation and differentiation of human cord blood mononuclear ...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2008.000034
更新日期:2009-06-01 00:00:00
abstract::Leukemia stem cells contribute to drug-resistance and relapse in chronic myeloid leukemia (CML) and BCR-ABL1 inhibitor monotherapy fails to eliminate these cells, thereby necessitating alternate therapeutic strategies for patients CML. The peroxisome proliferator-activated receptor-γ (PPARγ) agonist pioglitazone downr...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2018.194910
更新日期:2020-04-01 00:00:00
abstract::Next generation sequencing technologies have provided insights into the molecular heterogeneity of various myeloid neoplasms, revealing previously unknown somatic genetic events. In our cohort of 1444 cases analyzed by next generation sequencing, somatic mutations in the gene BRCA1-BRCA2-containing complex 3 (BRCC3) w...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2014.111989
更新日期:2015-08-01 00:00:00
abstract:BACKGROUND:The hemangioblast is a bi-potential precursor cell with the capacity to differentiate into hematopoietic and vascular cells. In mouse E7.0-7.5 embryos, the hemangioblast can be identified by a clonal blast colony-forming cell (BL-CFC) assay or single cell OP9 co-culture. However, the ontogeny of the hemangio...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2009.014241
更新日期:2010-06-01 00:00:00
abstract::Even though alterations in platelet counts are presumed to be detrimental, their impact on the survival of patients has not been studied in large cohorts. The prevalence of thrombocytopenia and thrombocytosis was examined in a large inner city outpatient population of 36,262 individuals aged ≥65 years old. A significa...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2013.101949
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:It has been shown that fludarabine (FLU) is superior to conventional treatment in B-CLL for rate and quality of response, leading to CR even at the molecular level. In this paper we report our preliminary results with this drug in B-CLL patients. METHODS AND PATIENTS:Twenty-seven B-CLL patients (16 refracto...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:
更新日期:1994-05-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Patients with acute myeloblastic leukemia (AML) with features of myelodysplastic syndrome and abnormalities of megakaryocytopoiesis often have cytogenetic aberrations of 3q21 and 3q26 bands involving the paracentric inversion [inv(3) (q21q26)] or a reciprocal translocation [t(3;3) (q21;q26)]. ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2003-11-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The threshold for prophylactic platelet transfusions has been classically established at 20,000/microL. In 48 patients with de novo acute myeloblastic leukemia (AML) we analyzed the effect of reducing the threshold for prophylactic platelet transfusion from 20,000/microL (group A) to 10,000/mic...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1998-11-01 00:00:00
abstract::We report results of a phase II trial of combination of melphalan, lenalidomide, and dexamethasone for the treatment of immunoglobulin light chain (AL) amyloidosis. The primary objectives were tolerability and hematologic response rate; secondary objectives were organ responses and survival. Treatment protocol consist...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2012.075192
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:A progressively growing number of peripheral blood stem cell transplants (PBSCTs) are being performed in patients with newly diagnosed multiple myeloma (MM) since they are ever more frequently being offered as up-front therapy. Furthermore, there are considerable concerns regarding the appropr...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Myelodysplastic syndromes are a heterogeneous group of hematopoietic stem cell disorders with a high propensity to transform into acute myeloid leukemia. Heterozygous missense mutations in IDH1 at position R132 and in IDH2 at positions R140 and R172 have recently been reported in acute myeloid leukemia. Howe...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2010.025494
更新日期:2010-10-01 00:00:00
abstract::Five patients with lymphoid blastic transformation of chronic myeloid leukemia have been treated with IL2 associated with Vincristine (VCR) plus Prednisone (PDN). Our study indicates that IL2 may be employed in the management of this disease without excessive toxicity at the higher doses in hospitalized patients and a...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::The availability of reliable and standardizable procedures with low contamination risk and less prominent loss in MNC, would solve the existing perplexities about the systematic use of this passage. We tried to experiment Areman's et al protocol that utilizes the CS 3000 blood cell processor without gradient, making s...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1991-03-01 00:00:00
abstract::The success of hematopoietic stem cell transplantation is determined by multiple factors. Additional complexity is conferred by covariables showing time-dependent effects. We evaluated the effect of predictors on competing-risk outcomes after hematopoietic stem cell transplantation in a time-dependent manner. We analy...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2017.183012
更新日期:2018-09-01 00:00:00
abstract::Epidemiological evidence suggests that infection is involved in the etiology of common acute lymphoblastic leukemia, either by stimulating an inappropriate immune response or in the form of a classical transforming agent. In an attempt to elucidate the role that infection is playing in this disease, we used representa...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2006-02-01 00:00:00
abstract::Some prospective studies showed that rabbit antithymocyte globulin was inferior to horse antithymocyte globulin as first-line therapy for patients with severe aplastic anemia. We retrospectively analyzed the clinical outcome of 455 children with severe aplastic anemia who received horse antithymocyte globulin (n=297) ...
journal_title:Haematologica
pub_type: 杂志文章,多中心研究
doi:10.3324/haematol.2013.089268
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Serum beta(2)-microglobulin (s beta(2)m) is an established prognostic factor for multiple myeloma and non-Hodgkin's lymphoma, but only limited data suggest an adverse prognostic significance for Hodgkin's lymphoma (HL). This study was undertaken to examine the impact of s beta(2)m on the progn...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract::We report a positive association between HLA-DRB1*15 (p= 0.0002) in Turkish patients with pediatric severe aplastic anemia (SAA) and a paradoxically favorable influence of the susceptibility marker on the clinical response to immunosuppressive therapy. These findings point to an immune mechanism mediated by DRB1*15 in...
journal_title:Haematologica
pub_type: 信件
doi:
更新日期:2002-07-01 00:00:00
abstract::Although myelodysplastic syndromes are heterogeneous disorders comprising a benign subset of bone marrow failure similar to aplastic anemia, no laboratory test has been established to distinguish it from bone marrow failures that can evolve into acute myeloid leukemia. Plasma thrombopoietin levels were measured in 120...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2012.066217
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Hepatocyte growth factor (HGF) is known to augment the effects of stem cell factor, interleukin-3, granulocyte-macrophage colony-stimulating factor (GM-CSF), erythropoetin, and granulocyte colony-stimulating factor, all of which are involved in hematopoiesis. HGF is also known to have a role in...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2000-05-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Storage pool diseases (SPD) are heterogeneous disorders associated with an abnormal presence of intraplatelet granules, which cause mild to moderate bleeding diathesis. We investigated signaling through tyrosine phosphorylation of proteins occurring in platelets with total or partial absence o...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Cord blood (CB) is a valuable source of stem cells. Most CB units are still cryopreserved in single bags in the world's CB banks. Thawing a single CB unit, dividing it into two parts, expanding the smaller one and refreezing the other would optimize ex vivo expansion of CB progenitors prior to...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::Long non-coding ribonucleic acids (RNAs) are a novel class of RNA molecules, which are increasingly recognized as important molecular players in solid and hematologic malignancies. Herein we investigated whether long non-coding RNA expression is associated with clinical and molecular features, as well as outcome of yo...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:10.3324/haematol.2017.166215
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND:An effective second-line treatment for intermediate and high grade non-Hodgkin's lymphoma is greatly needed since 30% of patients do not achieved complete remission (CR) and another 20% to 30% of the CRs will eventually relapse. METHODS:A four-drug combination with Mitoxantrone, Etoposide, Cisplatin and Dex...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Most minimal residual disease-directed treatment interventions in current treatment protocols for acute lymphoblastic leukemia are based on bone marrow testing, which is a consequence of previous studies showing the superiority of bone marrow over peripheral blood as an investigational material. Those studie...
journal_title:Haematologica
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3324/haematol.2011.042937
更新日期:2011-12-01 00:00:00
abstract:UNLABELLED:BACKGROUND Very severe aplastic anemia is characterized by a hypoplastic bone marrow due to destruction of CD34(+) stem cells by autoreactive T cells. Investigation of the pathomechanism by patient-specific gene expression analysis of the attacked stem cells has previously been impractical because of the sca...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2011.056705
更新日期:2012-09-01 00:00:00
abstract::The recent identification of acquired mutations in key components of the spliceosome machinery strongly implicates abnormalities of mRNA splicing in the pathogenesis of myelodysplastic syndromes. However, questions remain as to how these aberrations functionally combine with the growing list of mutations in genes invo...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2012.075325
更新日期:2013-07-01 00:00:00
abstract::To date, few mutations associated with a dominant quantitative deficiency of von Willebrand factor (VWF) and a high penetrance have been reported. This phenotype was confirmed in seven unrelated families of several patients diagnosed with von Willebrand's disease out of 70 who requested genetic studies of the VWF gene...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Transplant-related mortality (TRM) following allogeneic hematopoietic stem cell transplantation (HSCT) has been reported to be related to disease stage, duratiion of disease and type of donor. Furthermore, the outcome of transplants performed in the 1990s appears to be better than that of tran...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2004-10-01 00:00:00