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Registros recuperados: 3
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Imprime registro no formato completo
Asynchronous expression of myeloid antigens in leukemic cells in a PML/RARalpha transgenic mouse model BJMBR
Santana,B.A.A.; Pintão,M.C.; Lima,R.S. Abreu e; Scheucher,P.S.; Santos,G.A.S.; Garcia,A.B.; Falcão,R.P.; Rego,E.M..
Acute promyelocytic leukemia (APL) is characterized by the expansion of blasts that resemble morphologically promyelocytes and harbor a chromosomal translocation involving the retinoic acid receptor a (RARa) and the promyelocytic leukemia (PML) genes on chromosomes 17 and 15, respectively. The expression of the PML/RARa fusion gene is essential for APL genesis. In fact, transgenic mice (TM) expressing PML/RARa develop a form of leukemia that mimics the hematological findings of human APL. Leukemia is diagnosed after a long latency (approximately 12 months) during which no hematological abnormality is detected in peripheral blood (pre-leukemic phase). In humans, immunophenotypic analysis of APL blasts revealed distinct features; however, the precise...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Acute promyelocytic leukemia; Acute myelogenous leukemia; Transgenic mice; Flow cytometry; Leukemogenesis.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000500008
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CCAAT/enhancer-binding protein alpha (CEBPA) gene haploinsufficiency does not alter hematopoiesis or induce leukemia in Lck-CALM/AF10 transgenic mice BJMBR
Lange,A.P.; Almeida,L.Y.; Araújo Silva,C.L.; Scheucher,P.S.; Chahud,F.; Krause,A.; Bohlander,S.K.; Rego,E.M..
Although rare, CALM/AF10 is a chromosomal rearrangement found in immature T-cell acute lymphoblastic leukemia (T-ALL), acute myeloid leukemia, and mixed phenotype acute leukemia of T/myeloid lineages with poor prognosis. Moreover, this translocation is detected in 50% of T-ALL patients with gamma/delta T cell receptor rearrangement, frequently associated with low expression of transcription factor CCAAT/enhancer-binding protein alpha (CEBPA). However, the relevance of CEBPA low expression for CALM/AF10 leukemogenesis has not yet been evaluated. We generated double mutant mice, which express the Lck-CALM/AF10 fusion gene and are haploinsufficient for the Cebpa gene. To characterize the hematopoiesis, we quantified hematopoietic stem cells, myeloid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leukemia; CEBPA; CALM/AF10; Transgenic mice.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000600604
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Telomere length analysis in monoclonal B-cell lymphocytosis and chronic lymphocytic leukemia Binet A BJMBR
Furtado,F.M.; Scheucher,P.S.; Santana,B.A.; Scatena,N.F.; Calado,R.T.; Rego,E.M.; Matos,D.M.; Falcão,R.P..
Monoclonal B-cell lymphocytosis (MBL) is an asymptomatic clinical entity characterized by the proliferation of monoclonal B cells not meeting the diagnosis criteria for chronic lymphocytic leukemia (CLL). MBL may precede the development of CLL, but the molecular mechanisms responsible for disease progression and evolution are not completely known. Telomeres are usually short in CLL and their attrition may contribute to disease evolution. Here, we determined the telomere lengths of CD5+CD19+ cells in MBL, CLL, and healthy volunteers. Twenty-one CLL patients, 11 subjects with high-count MBL, and 6 with low-count MBL were enrolled. Two hundred and sixty-one healthy volunteers aged 0 to 88 years were studied as controls. After diagnosis confirmation, a flow...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Chronic lymphocytic leukemia; Monoclonal B-cell lymphocytosis; Telomere length.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500603
Registros recuperados: 3
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