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<i>SEPT10</i>Expression in Chronic Lymphocytic Leukemia. Correlation with Clinical and Biological Prognostic Factors

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Open Journal of Blood Diseases 2013年第3期3卷 11-16页

作者： Ana Travella Julieta Panero Carmen Stanganelli Raimundo Bezares Irma Slavutsky División Patología Molecular Instituto de Investigaciones Hematológicas Academia Nacional de Medi- cina Buenos Aires Argentina laboratorio de genética de neoplasias linfoides Instituto de Medicina Experimental CONICET-Academia Nacional de Medicina Buenos Aires Argentina Servicio de Hematología Hospital General de Agudos “Dr Teodoro álvarez” Buenos Aires Ar- gentina.

Chronic lymphocytic leukemia (CLL) is characterized by a highly variable clinical course. Microarray studies allowed highlight genes differentially expressed in this pathology. In this study, we have evaluated the prognostic significance of SEPT10 expression in CLL patients. Results were correlated with immunoglobulin heavy-chain variable (IGHV) genes mutational status, genomic rearrangements and clinical parameters. SEPT10 mRNA levels were determined by quantitative real-time PCR in 70 newly diagnosed CLL patients consecutively referred to our Institution. A wide heterogeneity for SEPT10 expression was found. gene upregulation was observed in 18.5% of cases. The univariate analysis showed a positive association between gen expression and platelet count (p 0.0001) and a negative correlation with hemoglobin levels (p = 0.0094). Although no significant differences were observed, mean treatment free survival was shorter in patients with high expression (31 months) with respect to those with low mRNA levels (72 months). Cases with abnormal karyotypes had increased expression compared to those with normal karyotypes and no association between gene expression and FISH (fluorescence in situ hybridization) risk groups and IGHV mutational status was found. Cases using IGHV3-23 gene rearrangement had low SEPT10 expression. Our results showed an association between SEPT10 expression and features of adverse outcome but without independent prognostic value. The study of SEPT10 expression may be important for a better understanding of disease heterogeneity, adding further information to those provided by established prognostic factors.

关键词： Chronic Lymphocytic Leukemia SEPT10 Expression FISH Cytogenetics IGHV Mutational Status

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Cancer stem cell impact on clinical oncology

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World Journal of Stem Cells 2018年第12期10卷 183-195页

作者： Mariel E Toledo-Guzmán Gabriele D Bigoni-Ordonez Miguel Ibanez Hernandez Elizabeth Ortiz-Sánchez Subdirección de Investigación Básica Instituto Nacional de CancerologíaMexico City 14080Mexico departamento de Bioquímica Laboratorio de Terapia GénicaEscuela Nacional de Ciencias BiológicasPosgrado de Biomedicina y Biotecnología MolecularInstituto Politécnico NacionalMexico City 11340Mexico

Cancer is a widespread worldwide chronic disease. In most cases, the high mortality rate from cancer correlates with a lack of clear symptoms, which results in late diagnosis for patients, and consequently, advanced tumor disease with poor probabilities for cure, since many patients will show chemo-and radio-resistance. Several mechanisms have been studied to explain chemo-and radio-resistance to anti-tumor therapies, including cell signaling pathways, anti-apoptotic mechanisms, stemness, metabolism, and cellular phenotypes. Interestingly, the presence of cancer stem cells(CSCs), which are a subset of cells within the tumors, has been related to therapy resistance. In this review, we focus on evaluating the presence of CSCs in different tumors such as breast cancer, gastric cancer, lung cancer, and hematological neoplasias, highlighting studies where CSCs were identified in patient samples. It is evident that there has been a great drive to identify the cell surface phenotypes of CSCs so that they can be used as a tool for anti-tumor therapy treatment design. We also review the potential effect of nanoparticles, drugs, natural compounds, aldehyde dehydrogenase inhibitors, cell signaling inhibitors, and antibodies to treat CSCs from specific tumors. Taken together, we present an overview of the role of CSCs in tumorigenesis and how research is advancing to target these highly tumorigenic cells to improve oncology patient outcomes.

关键词： Cancer Targeted therapy Clinical outcome Drug resistance Cancer stem cells

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