Abstract：
:Activation of the N-ras gene via coding region mutations has been previously documented in 25% of patients with acute myeloid leukemia (AML). Since overexpression of normal N-ras is also transforming in vitro, the N-ras promoter of AML patients was analyzed for the presence of promoter mutations that may affect expression of the N-ras gene. Single-stranded conformational polymorphism (SSCP) was used to analyze samples from 26 AML patients and 13 normal subjects. A novel polymorphism at position 390 within the N-ras promoter was observed in both AML patients and normal samples at an overall frequency of 26%. In addition, two of 26 patients had single-base substitutions within protein binding sites that altered the binding of transcription factors to the promoter. One patient had a T-->A mutation at position 520 within an AP-1 binding site; the other had an A-->G mutation at position 409 within a protein binding region adjacent to a Myb binding site. The data suggest that in addition to coding region mutations in the N-ras gene, mutations in the promoter region that could alter regulation of N-ras expression provide an alternative mechanism of involvement of N-ras in AML.
journal_name
Exp Hematoljournal_title
Experimental hematologyauthors
Thorn J,Molloy P,Iland Hsubject
Has Abstractpub_date
1995-09-01 00:00:00pages
1098-103issue
10eissn
0301-472Xissn
1873-2399journal_volume
23pub_type
杂志文章abstract：:Imatinib mesylate (IM), a tyrosine kinase inhibitor currently used in chronic myeloid leukemia (CML), may also affect the growth of other cellular systems besides CML cells. Because it has been reported that IM may affect bone tissue remodeling, we evaluated the effects of IM on osteoblastic differentiation of human b...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2008.12.008
更新日期：2009-04-01 00:00:00
abstract：:The switch/sugar nonfermenting (SWI/SNF) family of chromatin remodeling complexes have been implicated in normal hematopoiesis. The ARID2 protein is a component of the polybromo-associated BAF (PBAF), one of the two main SWI/SNF complexes. In the current study, we used a conditional Arid2 knockout mouse model to deter...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2020.12.004
更新日期：2020-12-17 00:00:00
abstract：:Radiation therapy is used as total body treatment in preparation of the acute myelogenous leukemia (AML) patient for bone marrow transplantation. Many AML patients will have residual leukemia cells at the time of total body irradiation (TBI). In the present study, the effect of TBI on leukemic myeloid cells was compar...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1979-01-01 00:00:00
abstract：:Adherent cells from mouse bone marrow have been shown to promote the in vitro growth of the AVRij-1 tumour cell line. The experiments presented here suggest that the adherent cells involved in this phenomenon are the progeny of bone marrow derived fibroblastoid colony forming units. The latter were characterized by me...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1979-04-01 00:00:00
abstract：:Mast cell (MC)-fibroblast-immunocompetent cell interactions may play a role in the inflammatory and fibrotic processes present in chronic graft-vs.-host disease (cGVHD). Interactions between these cell types were examined in both murine and human cGVHD models. To this purpose, cell supernatants from mice or humans wit...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1997-03-01 00:00:00
abstract：:Peripheral blood progenitor cells (PBPC) mobilized by granulocyte colony-stimulating factor (G-CSF) promptly engraft allogeneic recipients after myeloablative chemotherapy for hematologic malignancies. Surprisingly, no exacerbation of acute graft-vs-host disease has been observed despite a 10-fold higher T-cell conten...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(01)00617-8
更新日期：2001-04-01 00:00:00
abstract：:Mouse hematopoietic stem cells (HSCs) are highly enriched in the rare (approximately 0.05%) Thy-1.1(lo)Lin(-/lo)Sca-1+ fraction of hematopoietic tissues. It has been demonstrated that Thy-1.1(lo)Lin(-/lo)Sca-1+ cells are the only HSCs in C57BL/Ka-Thy-1.1 bone marrow. In this study, we separated C57/Ka-Thy-1.1 bone mar...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1996-04-01 00:00:00
abstract：OBJECTIVE:Polo-like kinase 1 (Plk1) is a regulator of the cell cycle that has been implicated in the pathology of many cancers. We have investigated whether this kinase plays a role in multiple myeloma (MM) using the Plk1 inhibitor BI 2536. MATERIALS AND METHODS:We have used six MM cell lines and six patient-derived s...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2010.12.006
更新日期：2011-03-01 00:00:00
abstract：:The current knowledge concerning the blood supply to hematopoietic bone marrow during increased marrow metabolism is scanty. We have previously shown that an accelerated erythropoiesis in the awake rat is accompanied by a rapid increase in perfusion of the tibial marrow and its bony encasement. We have now measured bl...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1993-02-01 00:00:00
abstract：:When cultured mast cells of (WB X C57BL/6)F1-+/+(WBB6F1-+/+) and WB-+/+(WB) mice were directly injected into the skin of genetically mast cell-deficient WBB6F1-W/Wv mice, mast cell clusters appeared at the injection sites. Although in vitro colony-forming ability is comparable between cultured mast cells of WB mice an...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1988-12-01 00:00:00
abstract：:A transplanted tumor that induces granulocytosis and produces colony stimulating factor (CSF) was studied in mice during several passages. The sequence of events leading to granulocytosis was characterized. Band granulocytes were increased 3 days after tumor inoculation, while simultaneously CFU-s and CFU-c in bone ma...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1978-04-01 00:00:00
abstract：:Cells for study were obtained from mouse bone marrow by three methods: 1) Mechanical dissociation; 2) Trypsin release; and 3) Passage through a syringe and needle. The ratio of the fibroblast colony-forming cells in these suspensions was, respectively, 1:13:1. Of the colonies formed by cells obtained by trypsin releas...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1982-02-01 00:00:00
abstract：:Mammalian erythroblasts undergo enucleation through a process thought to be similar to cytokinesis. Microtubule-organizing centers (MTOCs) mediate organization of the mitotic spindle apparatus that separates the chromosomes during mitosis and are known to be crucial for proper cytokinesis. However, the role of MTOCs i...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2015.12.003
更新日期：2016-04-01 00:00:00
abstract：:The processing of inflammatory signals occurs through a variety of mechanisms; the recent descriptions of the tethered ligand receptor for thrombin (JA Hoxie et al., J Biol Chem 268:13756, and TK Vu et al., Cell 64:1057) provide a novel route and mechanism for cellular activation after inflammation and thrombosis. Usi...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1996-07-01 00:00:00
abstract：OBJECTIVE:TGF-beta1 is a powerful inhibitor of erythropoiesis. However, its mechanisms of action are not fully elucidated yet at the cellular level. In this work we have studied the effects of TGF-beta on UT-7 cell survival, proliferation and differentiation. MATERIALS AND METHODS:UT-7 cell line is strictly dependent ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(99)00155-1
更新日期：2000-03-01 00:00:00
abstract：:In vitro treatment of parental C57BL/6 lymphohematopoietic cell grafts with unabsorbed guinea pig anti-mouse thymocyte serum (ATS) and guinea pig complement (GPC), prior to inoculation into lethally irradiated B6D2F hybrid hosts, has proven to be of value in terms of mitigating graft-versus-host disease (GvHD). Howeve...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1976-11-01 00:00:00
abstract：:The fate of hematopoietic progenitor cells (HPCs) in the bone marrow (BM) microenvironment is determined by two different interactions: 1) they adhere (via integrins) to both extracellular matrix molecules and BM stromal cells; and 2) stromal cells produce cytokines that influence their survival, proliferation, differ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1998-08-01 00:00:00
abstract：:The synthesis and expression of protein complexes of 23,000 and 30,00 dalton (p23,30) HLA-DR antigen, and of 44,000 and 12,000 dalton (p44,12) HLA-A,B antigen and beta 2-microglobulin was demonstrated on human peripheral blood monocytes and in cultures of purified, adherent monocytes. In indirect immunofluorescence as...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1980-07-01 00:00:00
abstract：OBJECTIVE:MicroRNAs (miRNAs) are an abundant class of small noncoding RNAs that regulate diverse cellular functions by sequence-specific inhibition of gene expression. We determined miRNA expression profile during erythroid differentiation and putative roles in erythroid differentiation. METHODS:The expression profile...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2007.03.014
更新日期：2007-07-01 00:00:00
abstract：:The relationship between the hematopoietic stem cell (HSC) population and its surrounding bone marrow microenvironment is a rapidly evolving area of research. Normal HSC processes rely heavily on a complex communication network involving various marrow niches. Although leukemogenesis largely results from abnormal gene...
journal_title：Experimental hematology
pub_type： 杂志文章,评审
doi：10.1016/j.exphem.2018.07.001
更新日期：2018-10-01 00:00:00
abstract：:Hematopoietic stem/progenitor cells (HSPCs) play important roles in fighting systemic infection as they supply immune cells in a demand-adapted manner. Various mechanisms govern HSPC responses to infection, including cytokine signaling, niche function, and direct sensing of pathogen-derived molecules by HSPCs themselv...
journal_title：Experimental hematology
pub_type： 杂志文章,评审
doi：10.1016/j.exphem.2015.11.008
更新日期：2016-02-01 00:00:00
abstract：OBJECTIVE:The present study was designed to compare directly the frequency of circulating LTC-IC and E-LTC-IC mobilized in peripheral blood (PB) after chemotherapy supported by either G-CSF (PB-G) or GM-CSF (PB-GM) in comparison to steady-state bone marrow (BM) and PB (PB-ST) values in the same patients. MATERIALS AND...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(01)00762-7
更新日期：2002-01-01 00:00:00
abstract：:We have established an in vitro system with which to examine the ability of Abelson murine leukemia virus (A-MuLV) to infect early hemopoietic progenitor cells. Blast cell colonies containing less than 100 cells were shown to contain up to 85% of cells with secondary hemopoietic colony-forming ability. Infection of ce...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:We have studied the ability of subpopulations of hemopoietic stem cells, obtained from murine bone marrow using elutriation and multiparameter sorting, to establish and maintain hemopoiesis following their deposition on irradiated stromal layers of long-term bone marrow cultures. Two fractions were obtained that diffe...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1990-09-01 00:00:00
abstract：:The anemia of Belgrade b/b rats has been shown to be due to intracellular iron deficiency. The aim of this study of erythropoiesis at the progenitor cell level in these rats was to determine if a defect is present in the early phase of red cell production. Both erythroid colony-forming unit (CFU-E)- and erythroid burs...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1989-08-01 00:00:00
abstract：OBJECTIVES:GPIIb integrin expression has been found on platelets and megakaryocytes, and more recently on immature hematopoietic progenitors. We set out to investigate expression of GPIIb in other hematopoietic cell lineages and, having detected it on mast cells, aimed to determine what possible role it might perform. ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2005.01.011
更新日期：2005-04-01 00:00:00
abstract：:Human cord blood or bone marrow cells expressing the CD34 surface antigen include a population of pluripotent progenitors. We identified and isolated a subpopulation of cells coexpressing CD34 and c-kit, a transmembrane receptor with tyrosine kinase activity. Novel monoclonal antibodies (16A6, 14A3, 3D6) directed agai...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：:Normal and myeloid leukemic spleen cells from RF mice were cultured in vitro in plasma clots. In situ histochemical staining and karyotypic analysis of the colonies formed in the clot revealed that the colonies produced by leukemic and normal progenitors were indistinguishable morphologically and cytochemically. Colon...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1978-02-01 00:00:00
abstract：OBJECTIVE:We studied two adult brothers with severe congenital thrombocytopenia in order to determine the genetic etiology of their inherited disorder. Despite the absence of eczema or immunodeficiency, a mutation of the Wiskott-Aldrich syndrome (WAS) gene was suspected because of the presence of microthrombocytes. MA...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(02)01023-8
更新日期：2003-02-01 00:00:00
abstract：:Hematopoietic cells have the potential for providing benefit in a variety of clinical settings. These include cells for support of patients undergoing high-dose chemotherapy, as a target for replacement gene therapy, and as a source of cells for immunotherapy. The limitation to many of these applications has been the ...
journal_title：Experimental hematology
pub_type： 杂志文章,评审
doi：10.1016/s0301-472x(00)00610-x
更新日期：2001-01-01 00:00:00
