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https://www.readbyqxmd.com/read/29464028/consecutive-epigenetically-active-agent-combinations-act-in-id1-runx3-tet2-and-hoxa-pathways-for-flt3itd-ve-aml
#1
Hamid Sayar, Yan Liu, Rui Gao, Mohammad Abu Zaid, Larry D Cripe, Jill Weisenbach, Katie J Sargent, Mehdi Nassiri, Lang Li, Heiko Konig, Attaya Suvannasankha, Feng Pan, Rajasubramaniam Shanmugam, Chirayu Goswami, Reuben Kapur, Mingjiang Xu, H Scott Boswell
Co-occurrence of Flt3ITD and TET2 mutations provoke an animal model of AML by epigenetic repression of Wnt pathway antagonists, including RUNX3, and by hyperexpression of ID1, encoding Wnt agonist. These affect HOXA over-expression and treatment resistance. A comparable epigenetic phenotype was identified among adult AML patients needing novel intervention. We chose combinations of targeted agents acting on distinct effectors, at the levels of both signal transduction and chromatin remodeling, in relapsed/refractory AML's, including Flt3ITD+ve, described with a signature of repressed tumor suppressor genes, involving Wnt antagonist RUNX3 , occurring along with ID1 and HOXA over-expressions...
January 19, 2018: Oncotarget
https://www.readbyqxmd.com/read/29463558/disruption-of-wnt-%C3%AE-catenin-exerts-anti-leukemia-activity-and-synergizes-with-flt3-inhibition-in-flt3-mutant-acute-myeloid-leukemia
#2
Xuejie Jiang, Po Yee Mak, Hong Mu, Duncan Mak, Steven Kornblau, Qi Zhang, Peter Ruvolo, Jared K Burks, Weiguo Zhang, Teresa McQueen, Rongqing Pan, Hongsheng Zhou, Marina Konopleva, Jorge E Cortes, Qifa Liu, Michael Andreeff, Bing Z Carter, Wenjing Tao
PURPOSE: Wnt/β-catenin signaling is required for leukemic stem cell function. FLT3 mutations are frequently observed in acute myeloid leukemia (AML). Anomalous FLT3 signaling increases β-catenin nuclear localization and transcriptional activity. FLT3 tyrosine kinase inhibitors (TKIs) are used clinically to treat FLT3-mutated AML patients, but with limited efficacy. We investigated the anti-leukemia activity of combined Wnt/β-catenin and FLT3 inhibition in FLT3-mutant AML. EXPERIMENTAL DESIGN: Wnt/β-catenin signaling was inhibited by the b-catenin/CBP antagonist C-82/PRI-724 or siRNAs, and FLT3 signaling by sorafenib or quizartinib...
February 20, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29437468/dual-flt3-topk-inhibitor-with-activity-against-flt3-itd-secondary-mutations-potently-inhibits-acute-myeloid-leukemia-cell-lines
#3
Neetu Dayal, Clement Opoku-Temeng, Delmis E Hernandez, Moloud Aflaki Sooreshjani, Brandon A Carter-Cooper, Rena G Lapidus, Herman O Sintim
AIM: Approximately 30% of acute myeloid leukemia (AML) patients carry FLT3 tyrosine kinase domain (TKD) mutations or internal tandem duplication (FLT3-ITD). Currently there is a paucity of compounds that are active against drug-resistant FLT3-ITD, which contains secondary mutations in the TKD, mainly at residues D835/F691. RESULTS: HSD1169, a novel compound, is active against FLT3-ITD (D835 or F691). HSD1169 is also active against T-LAK cell-originated protein kinase (TOPK), a collaborating kinase that is highly expressed in AML cell lines...
February 13, 2018: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29431743/sorafenib-promotes-graft-versus-leukemia-activity-in-mice-and-humans-through-il-15-production-in-flt3-itd-mutant-leukemia-cells
#4
Nimitha R Mathew, Francis Baumgartner, Lukas Braun, David O'Sullivan, Simone Thomas, Miguel Waterhouse, Tony A Müller, Kathrin Hanke, Sanaz Taromi, Petya Apostolova, Anna L Illert, Wolfgang Melchinger, Sandra Duquesne, Annette Schmitt-Graeff, Lena Osswald, Kai-Li Yan, Arnim Weber, Sonia Tugues, Sabine Spath, Dietmar Pfeifer, Marie Follo, Rainer Claus, Michael Lübbert, Christoph Rummelt, Hartmut Bertz, Ralph Wäsch, Johanna Haag, Andrea Schmidts, Michael Schultheiss, Dominik Bettinger, Robert Thimme, Evelyn Ullrich, Yakup Tanriver, Giang Lam Vuong, Renate Arnold, Philipp Hemmati, Dominik Wolf, Markus Ditschkowski, Cordula Jilg, Konrad Wilhelm, Christian Leiber, Sabine Gerull, Jörg Halter, Claudia Lengerke, Thomas Pabst, Thomas Schroeder, Guido Kobbe, Wolf Rösler, Soroush Doostkam, Stephan Meckel, Kathleen Stabla, Stephan K Metzelder, Sebastian Halbach, Tilman Brummer, Zehan Hu, Joern Dengjel, Björn Hackanson, Christoph Schmid, Udo Holtick, Christof Scheid, Alexandros Spyridonidis, Friedrich Stölzel, Rainer Ordemann, Lutz P Müller, Flore Sicre-de-Fontbrune, Gabriele Ihorst, Jürgen Kuball, Jan E Ehlert, Daniel Feger, Eva-Maria Wagner, Jean-Yves Cahn, Jacqueline Schnell, Florian Kuchenbauer, Donald Bunjes, Ronjon Chakraverty, Simon Richardson, Saar Gill, Nicolaus Kröger, Francis Ayuk, Luca Vago, Fabio Ciceri, Antonia M Müller, Takeshi Kondo, Takanori Teshima, Susan Klaeger, Bernhard Kuster, Dennis Dong Hwan Kim, Daniel Weisdorf, Walter van der Velden, Daniela Dörfel, Wolfgang Bethge, Inken Hilgendorf, Andreas Hochhaus, Geoffroy Andrieux, Melanie Börries, Hauke Busch, John Magenau, Pavan Reddy, Myriam Labopin, Joseph H Antin, Andrea S Henden, Geoffrey R Hill, Glen A Kennedy, Merav Bar, Anita Sarma, Donal McLornan, Ghulam Mufti, Betul Oran, Katayoun Rezvani, Omid Sha, Robert S Negrin, Arnon Nagler, Marco Prinz, Andreas Burchert, Andreas Neubauer, Dietrich Beelen, Andreas Mackensen, Nikolas von Bubnoff, Wolfgang Herr, Burkhard Becher, Gerard Socié, Michael A Caligiuri, Eliana Ruggiero, Chiara Bonini, Georg Häcker, Justus Duyster, Jürgen Finke, Erika Pearce, Bruce R Blazar, Robert Zeiser
Individuals with acute myeloid leukemia (AML) harboring an internal tandem duplication (ITD) in the gene encoding Fms-related tyrosine kinase 3 (FLT3) who relapse after allogeneic hematopoietic cell transplantation (allo-HCT) have a 1-year survival rate below 20%. We observed that sorafenib, a multitargeted tyrosine kinase inhibitor, increased IL-15 production by FLT3-ITD+ leukemia cells. This synergized with the allogeneic CD8+ T cell response, leading to long-term survival in six mouse models of FLT3-ITD+ AML...
February 12, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29342970/the-possible-importance-of-%C3%AE-3-integrins-for-leukemogenesis-and-chemoresistance-in-acute-myeloid-leukemia
#5
REVIEW
Silje Johansen, Annette K Brenner, Sushma Bartaula-Brevik, Håkon Reikvam, Øystein Bruserud
Acute myeloid leukemia (AML) is an aggressive bone marrow malignancy where the immature leukemia cells communicate with neighboring cells through constitutive cytokine release and through their cell surface adhesion molecules. The primary AML cells express various integrins. These heterodimeric molecules containing an α and a β chain are cell surface molecules that bind extracellular matrix molecules, cell surface molecules and soluble mediators. The β3 integrin (ITGB3) chain can form heterodimers only with the two α chains αIIb and αV...
January 15, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29304116/the-sorafenib-anti-relapse-effect-after-allohsct-is-associated-with-heightened-alloreactivity-and-accumulation-of-cd8-pd-1-cd279-lymphocytes-in-marrow
#6
Andrzej Lange, Emilia Jaskula, Janusz Lange, Grzegorz Dworacki, Dorota Nowak, Aleksandra Simiczyjew, Monika Mordak-Domagala, Mariola Sedzimirska
We studied three FLT3 ITD acute myeloid leukemia (AML) patients who relapsed after allogeneic haematopoietic stem cell transplantation (alloHSCT) and received multikinase inhibitor (MKI) sorafenib as part of salvage therapy. MKI was given to block the effect of FLT3 ITD mutation which powers proliferation of blast cells. However, the known facts that sorafenib is more effective in patents post alloHSCT suggested that this MKI can augment the immune system surveillance on leukaemia. In the present study, we investigated in depth the effect of sorafenib on the alloreactivity seen post-transplant including that on leukaemia...
2018: PloS One
https://www.readbyqxmd.com/read/29227282/hypoxia-induced-upregulation-of-bmx-kinase-mediates-therapeutic-resistance-in-acute-myeloid-leukemia
#7
Jolieke G van Oosterwijk, Daelynn R Buelow, Christina D Drenberg, Aksana Vasilyeva, Lie Li, Lei Shi, Yong-Dong Wang, David Finkelstein, Sheila A Shurtleff, Laura J Janke, Stanley Pounds, Jeffrey E Rubnitz, Hiroto Inaba, Navjotsingh Pabla, Sharyn D Baker
Oncogenic addiction to the Fms-like tyrosine kinase 3 (FLT3) is a hallmark of acute myeloid leukemia (AML) that harbors the FLT3-internal tandem duplication (FLT3-ITD) mutation. While FLT3 inhibitors like sorafenib show initial therapeutic efficacy, resistance rapidly develops through mechanisms that are incompletely understood. Here, we used RNA-Seq-based analysis of patient leukemic cells and found that upregulation of the Tec family kinase BMX occurs during sorafenib resistance. This upregulation was recapitulated in an in vivo murine FLT3-ITD-positive (FLT3-ITD+) model of sorafenib resistance...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29055209/long-term-survival-of-sorafenib-treated-flt3-itd-positive-acute-myeloid-leukaemia-patients-relapsing%C3%A2-after-allogeneic-stem-cell-transplantation
#8
MULTICENTER STUDY
S K Metzelder, T Schroeder, M Lübbert, M Ditschkowski, K Götze, S Scholl, R G Meyer, P Dreger, N Basara, M F Fey, H R Salih, A Finck, T Pabst, A Giagounidis, G Kobbe, E Wollmer, J Finke, A Neubauer, A Burchert
BACKGROUND: Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD)-positive acute myeloid leukaemia (AML) relapsing after allogeneic stem cell transplantation (allo-SCT) has a dismal prognosis with limited therapeutic options. FLT3-ITD kinase inhibition is a reasonable but palliative experimental treatment alternative in this situation. Information on long-term outcome is not available. METHODS: We performed a long-term follow-up analysis of a previously reported cohort of 29 FLT3-ITD-positive AML patients, which were treated in relapse after allo-SCT with sorafenib monotherapy...
November 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/29034366/a-phase-2-study-incorporating-sorafenib-into-the-chemotherapy-for-older-adults-with-flt3-mutated-acute-myeloid-leukemia-calgb-11001
#9
Geoffrey L Uy, Sumithra J Mandrekar, Kristina Laumann, Guido Marcucci, Weiqiang Zhao, Mark J Levis, Heidi D Klepin, Maria R Baer, Bayard L Powell, Peter Westervelt, Daniel J DeAngelo, Wendy Stock, Ben Sanford, William G Blum, Clara D Bloomfield, Richard M Stone, Richard A Larson
The Cancer and Leukemia Group B (CALGB), now part of the Alliance for Clinical Trials in Oncology, conducted a multicenter, single-arm, phase 2 study in patients ≥60 years with FMS-like tyrosine kinase 3 (FLT3)-mutated acute myeloid leukemia (AML). In this study, sorafenib was added to daunorubicin and cytarabine-based induction and consolidation chemotherapy and was also continued for 12 months of maintenance therapy. The primary end point of the study was overall survival (OS) at 1 year in the FLT3 internal tandem duplication (FLT3-ITD) cohort...
January 24, 2017: Blood Advances
https://www.readbyqxmd.com/read/28985760/an-improved-pre-clinical-patient-derived-liquid-xenograft-mouse-model-for-acute-myeloid-leukemia
#10
Zhisheng Her, Kylie Su Mei Yong, Kathirvel Paramasivam, Wilson Wei Sheng Tan, Xue Ying Chan, Sue Yee Tan, Min Liu, Yong Fan, Yeh Ching Linn, Kam Man Hui, Uttam Surana, Qingfeng Chen
BACKGROUND: Xenotransplantation of patient-derived AML (acute myeloid leukemia) cells in NOD-scid Il2rγ (null) (NSG) mice is the method of choice for evaluating this human hematologic malignancy. However, existing models constructed using intravenous injection in adult or newborn NSG mice have inferior engraftment efficiency, poor peripheral blood engraftment, or are difficult to construct. METHODS: Here, we describe an improved AML xenograft model where primary human AML cells were injected into NSG newborn pups intrahepatically...
October 6, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28985623/maintenance-of-cellular-respiration-indicates-drug-resistance-in-acute-myeloid-leukemia
#11
Katharina Henkenius, Brandon H Greene, Christina Barckhausen, Raimo Hartmann, Melanie Märken, Tom Kaiser, Miriam Rehberger, Stephan K Metzelder, Wolfgang J Parak, Andreas Neubauer, Cornelia Brendel, Elisabeth Mack
Primary resistance to induction therapy is an unsolved clinical problem in acute myeloid leukemia (AML). Here we investigated drug resistance in AML at the level of cellular metabolism in order to identify early predictors of therapeutic response. Using extracellular flux analysis, we compared metabolic drug responses in AML cell lines sensitive or resistant to cytarabine or sorafenib after 24h of drug treatment to a small cell lung cancer (SCLC) cell line exposed to etoposide. Only drug-resistant AML cells maintained oxidative metabolism upon drug exposure while SCLC cells displayed an overall metabolic shift towards glycolysis, i...
November 2017: Leukemia Research
https://www.readbyqxmd.com/read/28978109/sorafenib-inhibits-therapeutic-induction-of-necroptosis-in-acute-leukemia-cells
#12
Friederike Feldmann, Barbara Schenk, Sofie Martens, Peter Vandenabeele, Simone Fulda
Induction of necroptosis has emerged as an alternative approach to trigger programmed cell death, in particular in apoptosis-resistant cancer cells. Recent evidence suggests that kinase inhibitors targeting oncogenic B-RAF can also affect Receptor-interacting serine/threonine-protein kinase (RIP)1 and RIP3. Sorafenib, a multi-targeting kinase inhibitor with activity against B-RAF, is used for the treatment of acute leukemia. In the present study, we therefore investigated whether Sorafenib interferes with therapeutic induction of necroptosis in acute leukemia...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28876197/the-impact-of-flt3-mutations-on-treatment-response-and-survival-in-chinese-de%C3%A2-novo-aml-patients
#13
Qiao-Cheng Qiu, Chao Wang, Xie-Bing Bao, Jing Yang, Hong-Jie Shen, Zi-Xuan Ding, Hong Liu, Jun He, Hong Yao, Su-Ning Chen, Zheng Li, Sheng-Li Xue, Song-Bai Liu
OBJECTIVE: Two distinct forms of FMS-like tyrosine kinase 3 (FLT3) mutations, internal tandem duplication (ITD) in the juxtamembrane domain and point mutation within the activation loop of the tyrosine kinase domain (TKD), have been identified in considerable number of patients with AML. This study was aimed to analyze the impacts of these mutations on clinical outcomes, and assess the efficacy of different therapeutic regimens (allo-HSCT, sorafenib, or conventional chemotherapy) for AML patients with FLT3 mutations after the standard induction therapy...
September 6, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28670885/anti-vascular-endothelial-growth-factor-effects-of-sorafenib-and-arsenic-trioxide-in-acute-myeloid-leukemia-cell-lines
#14
Atousa Haghi, Saeed Mohammadi, Masoumeh Heshmati, Ardeshir Ghavamzadeh, Mohsen Nikbakht
Acute myeloid leukemia (AML), is a clonal disorder caused by acquired somatic mutations and chromosomal rearrangements. According to some evidence, progression of hematolymphoid malignancies depends on the induction of new blood vessel formation under the influence of acute leukemia. Various factors are produced by cancer cells under hypoxic conditions to increase vascular formation. Among these, vascular endothelial growth factor (VEGF) plays a crucial role. Cytotoxicity and anticancer effects of arsenic trioxide (ATO) have been reported in many cancers...
June 25, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28565742/-sorafenib-in-combination-with-chemotherapy-as-first-line-therapy-for-flt3-itd-positive-acute-myeloid-leukemia
#15
Q Y Zhang, X D Wei, Q S Yin, R H Mi, F F Yuan, L Chen
Objective: To analyze the clinical features of acute myeloid leukemia patients with Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD) mutation and the therapeutic effect of sorafenib in combination with chemotherapy as first-line therapy for these patients. Methods: Clinical features and therapeutic effect were retrospectively analyzed in 53 AML patients with FLT3-ITD mutation diagnosed in Henan Cancer Hospital from January 2013 to August 2016. The biological characteristics and clinical efficacy of chemotherapy in combination with or without Sorafeinb were analyzed...
May 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28450419/phosphoproteome-analysis-reveals-differential-mode-of-action-of-sorafenib-in-wildtype-and-mutated-flt3-acute-myeloid-leukemia-aml-cells
#16
Catrin Roolf, Nikolaj Dybowski, Anett Sekora, Stefan Mueller, Gudrun Knuebel, Andreas Tebbe, Hugo Murua Escobar, Klaus Godl, Christian Junghanss, Christoph Schaab
Constitutively activating internal tandem duplication (ITD) alterations of the receptor tyrosine kinase FLT3 (Fms-like tyrosine kinase 3) are common in acute myeloid leukemia (AML) and classifies FLT3 as an attractive therapeutic target. So far, applications of FLT3 small molecule inhibitors have been investigated primarily in FLT3-ITD(+) patients. Only recently, a prolonged event-free survival has been observed in AML patients who were treated with the multikinase inhibitor sorafenib in addition to standard therapy...
July 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28194038/itd-mutation-in-flt3-tyrosine-kinase-promotes-warburg-effect-and-renders-therapeutic-sensitivity-to-glycolytic-inhibition
#17
H-Q Ju, G Zhan, A Huang, Y Sun, S Wen, J Yang, W-H Lu, R-H Xu, J Li, Y Li, G Garcia-Manero, P Huang, Y Hu
Internal tandem duplication (ITD) mutation in Fms-like tyrosine kinase 3 gene (FLT3/ITD) represents an unfavorable genetic change in acute myeloid leukemia (AML) and is associated with poor prognosis. Metabolic alterations have been involved in tumor progression and attracted interest as a target for therapeutic intervention. However, few studies analyzed the adaptations of cellular metabolism in the context of FLT3/ITD mutation. Here, we report that FLT3/ITD causes a significant increase in aerobic glycolysis through AKT-mediated upregulation of mitochondrial hexokinase (HK2), and renders the leukemia cells highly dependent on glycolysis and sensitive to pharmacological inhibition of glycolytic activity...
October 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28088962/-efficacy-and-safety-of-sorafenib-as-monotherapy-to-flt3-itd-positive-acute-myeloid-leukemia
#18
J S Jia, H H Zhu, H X Fu, L Z Gong, J Kong, X J Huang, H Jiang
Objective: To explore the efficacy and safety of Sorafenib as monotherapy to FLT3 positive acute myeloid leukemia (AML). Methods: From April 2014 to December 2015, fourteen AML patients with FLT3 positive, 7 males and 7 females with a median age of 42 (range: 14-81) years old, were enrolled in this study. Of the 14 cases, 4 were de novo cases, 9 refractory cases and 1 relapsed case, including 78.6% patients with severe complications and 57.1% patients with KPS score less than 60 [the median KPS score was 45 (20-70) ]...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28077790/flt3-activating-mutations-display-differential-sensitivity-to-multiple-tyrosine-kinase-inhibitors
#19
Bao Nguyen, Allen B Williams, David J Young, Hayley Ma, Li Li, Mark Levis, Patrick Brown, Donald Small
Fms-like tyrosine kinase-3 (FLT3) is a receptor tyrosine kinase that normally functions in hematopoietic cell survival, proliferation and differentiation. Constitutively activating mutations of FLT3 map predominately to the juxtamembrane domain (internal tandem duplications; ITD) or the activation loop (AL) of the kinase domain and are detected in about 1/3 of de novo acute myeloid leukemia (AML) patients. Small molecule tyrosine kinase inhibitors (TKI) effectively target FLT3/ITD mutations, but some activating mutations, particularly those on the AL, are relatively resistant to many FLT3 TKI...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28000291/the-role-of-flt3-inhibitors-in-the-treatment-of-flt3-mutated-acute-myeloid-leukemia
#20
REVIEW
Amir T Fathi, Yi-Bin Chen
FLT3 mutations are present in about one-third of patients with acute myeloid leukemia (AML). Several FLT3 inhibitors have been used in clinical trials, and these include midostaurin, sorafenib, quizartinib, crenolanib, and gilteritinib. Monotherapy with early tyrosine kinase inhibitors (TKIs) did not have much success; however, later generation agents have shown more promising results. Combination with conventional chemotherapy may have benefit as evidenced by recently presented results, and data from ongoing trials are eagerly awaited...
April 2017: European Journal of Haematology
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