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https://www.readbyqxmd.com/read/28498449/bioinformatic-analysis-of-the-effects-and-mechanisms-of-decitabine-and-cytarabine-on-acute-myeloid-leukemia
#1
Shiyong Zhou, Pengfei Liu, Huilai Zhang
Acute myeloid leukemia (AML) is a frequently occurring malignant disease of the blood and may result from a variety of genetic disorders. The present study aimed to identify the underlying mechanisms associated with the therapeutic effects of decitabine and cytarabine on AML, using microarray analysis. The microarray datasets GSE40442 and GSE40870 were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) and differentially methylated sites were identified in AML cells treated with decitabine compared with those treated with cytarabine via the Linear Models for Microarray Data package, following data pre‑processing...
May 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28494506/minimal-residual-disease-eradication-with-epigenetic-therapy-in-core-binding-factor-acute-myeloid-leukemia
#2
Brittany Knick Ragon, Naval Daver, Guillermo Garcia-Manero, Farhad Ravandi, Jorge Cortes, Tapan Kadia, Betul Oran, Maro Ohanian, Alessandra Ferrajoli, Naveen Pemmaraju, Hagop M Kantarjian, Gautam Borthakur
Recurrent translocations, t(8;21) or inv(16), in core binding factor acute myeloid leukemia (CBF-AML) are amenable to monitoring for minimal residual disease (MRD) with reverse transcriptase polymerase chain reaction (RTPCR). Despite a favorable prognosis, disease relapse remains the single cause of treatment failure in CBF-AML. Fusion products of these translocations recruit epigenetic silencing complexes resulting in hematopoietic maturation arrest. We hypothesized that maintenance therapy with hypomethylating agents (HMA), including decitabine (DAC) and azacitidine (AZA) after induction/consolidation, can be used for MRD elimination to ultimately prolong relapse free survival...
May 11, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28489568/efficacy-and-safety-of-decitabine-in-treatment-of-elderly-patients-with-acute-myeloid-leukemia-a-systematic-review-and-meta-analysis
#3
Pin-Fang He, Jing-Dong Zhou, Dong-Ming Yao, Ji-Chun Ma, Xiang-Mei Wen, Zhi-Hui Zhang, Xin-Yue Lian, Zi-Jun Xu, Jun Qian, Jiang Lin
Elderly patients with acute myeloid leukemia (AML) have limited treatment options concerned about their overall fitness and potential treatment related mortality. Although a number of clinical trials demonstrated benefits of decitabine treatment in elderly AML patients, the results remains controversial. A meta-analysis was performed to evaluate efficacy and safety of decitabine in treatment of elderly AML patients. Eligible studies were identified from PubMed, Web of Science, Embase and Cochrane Library. Nine published studies were included in the meta-analysis, enrolling 718 elderly AML patients...
April 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28488914/decitabine-treatment-of-multiple-extramedullary-acute-myeloid-leukemia-involvements-after-essential-thrombocytemia-transformation
#4
Pasquale Niscola, Elisabetta Abruzzese, Malgorzata Monika Trawinska, Massimiliano Palombi, Andrea Tendas, Marco Giovannini, Laura Scaramucci, Luca Cupelli, Stefano Fratoni, Nélida Inés Noguera, Gianfranco Catalano, Paolo de Fabritiis
No abstract text is available yet for this article.
May 10, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28484169/current-diagnosis-and-treatment-for-myelodysplastc-syndromes
#5
Tomoko Hata
Genetic analysis of myelodysplastic syndrome (MDS) using next-generation sequencing yields medcially important information, showing gene mutations in 90% of MDS cases. The World Health Organization (WHO) classification was revised in 2016 to incorporate SF3B1 gene mutations, frequently seen in MDS with ringed sideroblasts, into the diagnostic criteria. Unlike the poor prognosis seen in cases with ASXL1, EZH2, RUNX1 and in particular, TP53 MDS-related mutations, SF3B1 gene mutations show a favorable prognosis...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28482026/pre-clinical-drug-screen-reveals-topotecan-actinomycin-d-and-volasertib-as-potential-new-therapeutic-candidates-for-etmr-brain-tumor-patients
#6
Christin Schmidt, Nil A Schubert, Sebastian Brabetz, Norman Mack, Benjamin Schwalm, Jennifer A Chan, Florian Selt, Christel Herold-Mende, Olaf Witt, Till Milde, Stefan M Pfister, Andrey Korshunov, Marcel Kool
Background: Embryonal tumor with multilayered rosettes (ETMR) is a rare and aggressive embryonal brain tumor that solely occurs in infants and young children and has only recently been recognized as a separate brain tumor entity in the WHO classification for CNS tumors. Patients have a very dismal prognosis with a median survival of 12 months upon diagnosis despite aggressive treatment. The aim of this study was to develop novel treatment regimens in a pre-clinical drug screen in order to inform potentially more active clinical trial protocols...
May 8, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28480959/research-on-the-epigenetic-regulation-mechanism-of-the-ptpn6-gene-in-advanced-chronic-myeloid-leukaemia
#7
Xiaokun Zhang, Lin Yang, Xiaojun Liu, Ziyuan Nie, Xingzhe Wang, Yuxia Pan, Jianmin Luo
PTPN6, a tyrosine phosphatase protein, plays a negative role in cell signal transduction and is negatively correlated with tumour formation and growth. However, epigenetic regulation mechanism of the PTPN6 gene in advanced chronic myeloid leukaemia (CML) remains unclear. This study investigated bone marrow or blood samples from 44 CML patients and 10 healthy volunteers. KCL22 and K562 cells were cultured and treated with demethylation drugs and histone deacetylase inhibitors. Real time quantitative polymerase chain reaction (qPCR), methylation-specific PCR, bisulfite sequencing PCR, Western blotting, co-immunoprecipitation and chromatin immunoprecipitation (ChIP) was performed...
May 8, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28474744/outcome-of-elderly-patients-after-failure-to-hypomethylating-agents-given-as-frontline-therapy-for-acute-myeloid-leukemia-aml-single-institution-experience
#8
Rama Nanah, Kristen McCullough, William Hogan, Kebede Begna, Mrinal Patnaik, Michelle Elliott, Mark Litzow, Aref Al-Kali
Outcomes of acute myeloid leukemia (AML) in elderly patients unfit for intensive chemotherapy is challenging. Hypomethylating agents (HMAs) can be effective in these patients but responses are usually short-lived. The majority of patients will either have stable disease or progress through therapy. We hereby describe the outcome of these patients at our institution after they fail HMAs. The data on 56 AML patients at Mayo Clinic, Rochester were reviewed. Patients were considered for our study if they received HMA as frontline therapy for their AML...
May 5, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28468099/-effects-of-decitabine-on-proliferation-capacity-and-tfpi-2-expression-in-leukemia-k562-cells
#9
F J Wang, J J Li, H T Xie, Y Y Zeng, J Liu, J Zhang
No abstract text is available yet for this article.
April 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28468092/-a-preliminary-study-on-the-outcome-of-lower-risk-myelodysplastic-syndrome-by-low-dose-decitabine
#10
L Ye, Y L Ren, L L Xie, Y W Luo, P P Lin, X P Zhou, L Y Ma, C Mei, W L Xu, J Y Wei, H F Jiang, L M Zhang, H Zeng, H Y Tong
Objective: To assess the efficiency and safety of low-dose decitabine in patients with lower-risk myelodysplastic syndrome (MDS) to couple with the clinical significance of MDS-related gene mutations. Methods: This study was done in 4 institutions in Zhejiang Province. A total of 62 newly diagnosed patients with lower-risk MDS were assigned to two groups of decitabine (12 mg·m(-2)·d(-1) for 5 consecutive days) and best supportive care (BSC) . Their bone marrow samples were subject to examinations of MDS-related 15 gene mutations...
April 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28445872/successful-management-of-decitabine-prior-to-full-dose-idarubicin-and-cytarabine-in-the-treatment-of-refractory-recurrent-acute-myeloid-leukemia
#11
Hongyu Zhao, Li Xu, Yongjian Yang, Jianhua Shao, Ping Chen, Xuebin Dong, Linping Gu, Daqi Li
AIMS: To investigate the safety and efficacy of the triple therapy of decitabine, idarubicin, and cytarabine in the treatment of refractory or recurrent acute myeloid leukemia (R/R AML). METHODS: We conducted a single-center retrospective study in which decitabine treatment was administered prior to full-dose idarubicin and cytarabine (D-IA) for 21 R/R AML patients. RESULTS: After 1 cycle of D-IA, 10/21 (47.6%) patients experienced a complete remission (CR) and 2/21 (9...
April 27, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28436707/samhd1-protects-cancer-cells-from-various-nucleoside-based-antimetabolites
#12
Nikolas Herold, Sean G Rudd, Kumar Sanjiv, Juliane Kutzner, Julia Bladh, Cynthia B J Paulin, Thomas Helleday, Jan-Inge Henter, Torsten Schaller
Recently, we demonstrated that sterile α motif and HD domain containing protein 1 (SAMHD1) is a major barrier in acute myelogenous leukemia (AML) cells to the cytotoxicity of cytarabine (ara-C), the most important drug in AML treatment. Ara-C is intracellularly converted by the canonical dNTP synthesis pathway to ara-CTP, which serves as a substrate but not an allosteric activator of SAMHD1. Using an AML mouse model, we show here that wild type but not catalytically inactive SAMHD1 reduces ara-C treatment efficacy in vivo...
April 24, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28435228/erratum-decitabine-reverses-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-non-small-cell-lung-cancer-by-regulating-mir-200-zeb-axis-corrigendum
#13
(no author information available yet)
[This corrects the article on p. 969 in vol. 11.].
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28433417/mechanistic-insights-into-epigenetic-modulation-of-ethanol-consumption
#14
Igor Ponomarev, Claire E Stelly, Hitoshi Morikawa, Yuri A Blednov, R Dayne Mayfield, R Adron Harris
There is growing evidence that small-molecule inhibitors of epigenetic modulators, such as histone deacetylases (HDAC) and DNA methyltransferases (DNMT), can reduce voluntary ethanol consumption in animal models, but molecular and cellular processes underlying this behavioral effect are poorly understood. We used C57BL/6J male mice to investigate the effects of two FDA-approved drugs, decitabine (a DNMT inhibitor) and SAHA (an HDAC inhibitor), on ethanol consumption using two tests: binge-like drinking in the dark (DID) and chronic intermittent every other day (EOD) drinking...
May 2017: Alcohol
https://www.readbyqxmd.com/read/28427903/atrial-fibrillation-is-associated-with-hypermethylation-in-human-left-atrium-and-treatment-with-decitabine-reduces-atrial-tachyarrhythmias-in-spontaneously-hypertensive-rats
#15
R Doñate Puertas, E Meugnier, C Romestaing, C Rey, E Morel, J Lachuer, N Gadot, A Scridon, C Julien, F Tronc, B Chapuis, C Valla, A Janin, L Pirola, A Méjat, S Rome, P Chevalier
Atrial fibrillation (AF) is the most common cardiac arrhythmia. As the molecular mechanisms underlying the pathology are largely unknown, this cardiac arrhythmia remains difficult to treat. To identify specific molecular actors involved in AF, we have performed a transcriptomic analysis on left atrium (LA) from patients with valvular heart disease with or without AF. We showed that 1627 genes had altered basal expression level in LA tissue of AF patients compared with the control group. The significantly enriched gene ontology biological process "anatomical structure morphogenesis" contained the highest number of genes in line with changes in structure that occur when the human heart remodels following AF development (ie, LA dilatation and interstitial fibrosis)...
March 30, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28406054/decitabine-as-salvage-therapy-for-primary-induction-failure-of-acute-myeloid-leukemia
#16
Pasquale Niscola, Benedetta Neri, Gianfranco Catalano, Luciana Morino, Marco Giovannini, Laura Scaramucci, Stefano Fratoni, Nélida Inés Noguera, Iole Cordone, Paolo de Fabritiis
No abstract text is available yet for this article.
February 17, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28405849/hypomethylation-agent-decitabine-restores-drug-sensitivity-by-depressing-p-glycoprotein-activity-through-mapk-signaling-pathway
#17
Huihan Wang, Xiaobin Wang, Aijun Liao, Zhuogang Liu
The multidrug resistance (MDR) continues to be an obstacle in the treatment of both hematological and solid tumors. Hypomethylation agent, decitabine (5-Aza-dC), is an experimental agent in MDR therapy, while the mechanism is not very clear. In the present study, we demonstrated 5-Aza-dC may reverse MDR induced by P-glycoprotein (P-gp) coded by mdr1 gene in both hematologic K562/ADR cells and solid tumor MCF-7/ADR cells with time and dose-dependent manner. 5-Aza-dC significantly increased drug sensitivity in patients' leukemic cells which had higher expression of mdr1 gene...
April 12, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28405157/decitabine-reverses-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-non-small-cell-lung-cancer-by-regulating-mir-200-zeb-axis
#18
Nan Zhang, Yanyang Liu, Yuyi Wang, Maoyuan Zhao, Li Tu, Feng Luo
OBJECTIVE: Epithelial-mesenchymal transition (EMT) is a crucial driver of tumor progression. Tumor growth factor-beta 1 (TGF-β1) is an important factor in EMT induction in tumorigenesis. The targeting of EMT may, therefore, represent a promising approach in anticancer treatment. METHODS: In this study, we determined the effect of decitabine, a DNA methyltransferase inhibitor, on TGF-β1-induced EMT in non-small-cell lung cancer (NSCLC) PC9 and A549 cells. We also assessed the involvement of the miR-200/ZEB axis...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28404876/increasing-timp3-expression-by-hypomethylating-agents-diminishes-soluble-mica-micb-and-ulbp2-shedding-in-acute-myeloid-leukemia-facilitating-nk-cell-mediated-immune-recognition
#19
Aroa Baragaño Raneros, Alfredo Minguela Puras, Ramon M Rodriguez, Enrique Colado, Teresa Bernal, Eduardo Anguita, Adela Vasco Mogorron, Alberto Chaparro Gil, Jose Ramon Vidal-Castiñeira, Leonardo Márquez-Kisinousky, Paula Díaz Bulnes, Amelia Martinez Marin, Maria Carmen García Garay, Beatriz Suarez-Alvarez, Carlos Lopez-Larrea
Acute myeloid leukemia (AML) is a disease with great morphological and genetic heterogeneity, which complicates its prognosis and treatment. The hypomethylating agents azacitidine (Vidaza®, AZA) and decitabine (Dacogen®, DAC) have been approved for the treatment of AML patients, but their mechanisms of action are poorly understood. Natural killer (NK) cells play an important role in the recognition of AML blasts through the interaction of the activating NKG2D receptor with its ligands (NKG2DL: MICA/B and ULBPs1-3)...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28388554/synergistic-inhibitory-effects-of-deferasirox-in-combination-with-decitabine-on-leukemia-cell-lines-skm-1-thp-1-and-k-562
#20
Nianyi Li, Qinfen Chen, Jingwen Gu, Shuang Li, Guangjie Zhao, Wei Wang, Zhicheng Wang, Xiaoqin Wang
A multi-center study from the French Myelodysplastic Syndrome (MDS) Group confirmed that iron chelation therapy is an independent prognostic factor that can increase the survival rate of patients who are suffering from transfusion-dependent low-risk MDS. In this study, we aimed to explore this clinical phenomena in vitro, by exploring the synergistic effect of the iron chelator Deferasirox (DFX) and the DNA methyl transferase inhibitor Decitabine (DAC) in the leukemia cell lines SKM-1, THP-1, and K-562. Treatment with both DFX or DAC promoted apoptosis, induced cell cycle arrest, and inhibited proliferation in all three of these cell lines...
March 27, 2017: Oncotarget
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