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Hay J, Tarafdar A, Holroyd AK, Moka HA, Dunn KM, Alshayeb A, Lloyd BH, Cassels J, Malik N, Khan AF, Sou I, Lees J, Almuhanna HNB, Kalakonda N, Slupsky JR, Michie AM. PKCβ Facilitates Leukemogenesis in Chronic Lymphocytic Leukaemia by Promoting Constitutive BCR-Mediated Signalling. Cancers (Basel) 2022; 14:cancers14236006. [PMID: 36497487 PMCID: PMC9735720 DOI: 10.3390/cancers14236006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/22/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
B cell antigen receptor (BCR) signalling competence is critical for the pathogenesis of chronic lymphocytic leukaemia (CLL). Defining key proteins that facilitate these networks aid in the identification of targets for therapeutic exploitation. We previously demonstrated that reduced PKCα function in mouse hematopoietic stem/progenitor cells (HPSCs) resulted in PKCβII upregulation and generation of a poor-prognostic CLL-like disease. Here, prkcb knockdown in HSPCs leads to reduced survival of PKCα-KR-expressing CLL-like cells, concurrent with reduced expression of the leukemic markers CD5 and CD23. SP1 promotes elevated expression of prkcb in PKCα-KR expressing cells enabling leukemogenesis. Global gene analysis revealed an upregulation of genes associated with B cell activation in PKCα-KR expressing cells, coincident with upregulation of PKCβII: supported by activation of key signalling hubs proximal to the BCR and elevated proliferation. Ibrutinib (BTK inhibitor) or enzastaurin (PKCβII inhibitor) treatment of PKCα-KR expressing cells and primary CLL cells showed similar patterns of Akt/mTOR pathway inhibition, supporting the role for PKCβII in maintaining proliferative signals in our CLL mouse model. Ibrutinib or enzastaurin treatment also reduced PKCα-KR-CLL cell migration towards CXCL12. Overall, we demonstrate that PKCβ expression facilitates leukemogenesis and identify that BCR-mediated signalling is a key driver of CLL development in the PKCα-KR model.
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Affiliation(s)
- Jodie Hay
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
| | - Anuradha Tarafdar
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Ailsa K. Holroyd
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Hothri A. Moka
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Karen M. Dunn
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
| | - Alzahra Alshayeb
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7BE, UK
| | - Bryony H. Lloyd
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7BE, UK
| | - Jennifer Cassels
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
| | - Natasha Malik
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Ashfia F. Khan
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - IengFong Sou
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Jamie Lees
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
| | - Hassan N. B. Almuhanna
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
| | - Nagesh Kalakonda
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7BE, UK
| | - Joseph R. Slupsky
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7BE, UK
| | - Alison M. Michie
- School of Cancer Sciences, College of Medicine, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Paul O’Gorman Leukaemia Research Centre, Gartnavel General Hospital, 21 Shelley Road, Glasgow G12 0ZD, UK
- Correspondence: ; Tel.: +44-(0)141-301-7885
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2
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Cooke M, Kazanietz MG. Overarching roles of diacylglycerol signaling in cancer development and antitumor immunity. Sci Signal 2022; 15:eabo0264. [PMID: 35412850 DOI: 10.1126/scisignal.abo0264] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Diacylglycerol (DAG) is a lipid second messenger that is generated in response to extracellular stimuli and channels intracellular signals that affect mammalian cell proliferation, survival, and motility. DAG exerts a myriad of biological functions through protein kinase C (PKC) and other effectors, such as protein kinase D (PKD) isozymes and small GTPase-regulating proteins (such as RasGRPs). Imbalances in the fine-tuned homeostasis between DAG generation by phospholipase C (PLC) enzymes and termination by DAG kinases (DGKs), as well as dysregulation in the activity or abundance of DAG effectors, have been widely associated with tumor initiation, progression, and metastasis. DAG is also a key orchestrator of T cell function and thus plays a major role in tumor immunosurveillance. In addition, DAG pathways shape the tumor ecosystem by arbitrating the complex, dynamic interaction between cancer cells and the immune landscape, hence representing powerful modifiers of immune checkpoint and adoptive T cell-directed immunotherapy. Exploiting the wide spectrum of DAG signals from an integrated perspective could underscore meaningful advances in targeted cancer therapy.
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Affiliation(s)
- Mariana Cooke
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, PA 19141, USA
| | - Marcelo G Kazanietz
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Ruiz-Aparicio PF, Vanegas NDP, Uribe GI, Ortiz-Montero P, Cadavid-Cortés C, Lagos J, Flechas-Afanador J, Linares-Ballesteros A, Vernot JP. Dual Targeting of Stromal Cell Support and Leukemic Cell Growth by a Peptidic PKC Inhibitor Shows Effectiveness against B-ALL. Int J Mol Sci 2020; 21:ijms21103705. [PMID: 32466311 PMCID: PMC7279155 DOI: 10.3390/ijms21103705] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stem cells (MSC) favour a scenario where leukemic cells survive. The protein kinase C (PKC) is essential to confer MSC support to leukemic cells and may be responsible for the intrinsic leukemic cell growth. Here we have evaluated the capacity of a chimeric peptide (HKPS), directed against classical PKC isoforms, to inhibit leukemic cell growth. HKPS was able to strongly inhibit viability of different leukemic cell lines, while control HK and PS peptides had no effect. Further testing showed that 30% of primary samples from paediatric B-cell acute lymphoblastic leukaemia (B-ALL) were also strongly affected by HKPS. We showed that HKPS disrupted the supportive effect of MSC that promote leukemic cell survival. Interestingly, ICAM-1 and VLA-5 expression increased in MSC during the co-cultures with B-ALL cells, and we found that HKPS inhibited the interaction between MSC and B-ALL cells due to a reduction in the expression of these adhesion molecules. Of note, the susceptibility of B-ALL cells to dexamethasone increased when MSC were treated with HKPS. These results show the relevance of these molecular interactions in the leukemic niche. The use of HKPS may be a new strategy to disrupt intercellular communications, increasing susceptibility to therapy, and at the same time, directly affecting the growth of PKC-dependent leukemic cells.
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Affiliation(s)
- Paola Fernanda Ruiz-Aparicio
- Grupo de Investigación Fisiología Celular y Molecular, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia; (P.F.R.-A.); (N.-D.P.V.); (P.O.-M.); (C.C.-C.)
| | - Natalia-Del Pilar Vanegas
- Grupo de Investigación Fisiología Celular y Molecular, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia; (P.F.R.-A.); (N.-D.P.V.); (P.O.-M.); (C.C.-C.)
| | - Gloria Inés Uribe
- Grupo de Investigación Oncohematología Pediátrica, Fundación Hospital de la Misericordia, Universidad Nacional de Colombia, Bogotá D. C. 111071, Colombia; (G.I.U.); (J.L.); (J.F.-A); (A.L.-B.)
- Servicio de Patología, Laboratorio de Hematología Especial y Citometría de flujo, Fundación Hospital de la Misericordia, Bogotá D. C. 111071, Colombia
| | - Paola Ortiz-Montero
- Grupo de Investigación Fisiología Celular y Molecular, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia; (P.F.R.-A.); (N.-D.P.V.); (P.O.-M.); (C.C.-C.)
| | - Camila Cadavid-Cortés
- Grupo de Investigación Fisiología Celular y Molecular, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia; (P.F.R.-A.); (N.-D.P.V.); (P.O.-M.); (C.C.-C.)
| | - Jimmy Lagos
- Grupo de Investigación Oncohematología Pediátrica, Fundación Hospital de la Misericordia, Universidad Nacional de Colombia, Bogotá D. C. 111071, Colombia; (G.I.U.); (J.L.); (J.F.-A); (A.L.-B.)
| | - Jessica Flechas-Afanador
- Grupo de Investigación Oncohematología Pediátrica, Fundación Hospital de la Misericordia, Universidad Nacional de Colombia, Bogotá D. C. 111071, Colombia; (G.I.U.); (J.L.); (J.F.-A); (A.L.-B.)
| | - Adriana Linares-Ballesteros
- Grupo de Investigación Oncohematología Pediátrica, Fundación Hospital de la Misericordia, Universidad Nacional de Colombia, Bogotá D. C. 111071, Colombia; (G.I.U.); (J.L.); (J.F.-A); (A.L.-B.)
| | - Jean-Paul Vernot
- Grupo de Investigación Fisiología Celular y Molecular, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia; (P.F.R.-A.); (N.-D.P.V.); (P.O.-M.); (C.C.-C.)
- Instituto de Investigaciones Biomédicas, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá D. C. 111321, Colombia
- Correspondence: ; Tel.: +571-316-5000 (ext. 15057); Fax: +571-316-5466
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Ma G, Gezer D, Herrmann O, Feldberg K, Schemionek M, Jawhar M, Reiter A, Brümmendorf TH, Koschmieder S, Chatain N. LCP1 triggers mTORC2/AKT activity and is pharmacologically targeted by enzastaurin in hypereosinophilia. Mol Carcinog 2019; 59:87-103. [DOI: 10.1002/mc.23131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/14/2019] [Accepted: 10/21/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Guangxin Ma
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
- Hematology and Oncology Unit, Department of Geriatrics Qilu Hospital of Shandong University Jinan Shandong China
| | - Deniz Gezer
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Oliver Herrmann
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Kristina Feldberg
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Mirle Schemionek
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Mohamad Jawhar
- Department of Hematology and Oncology University Medical Centre Mannheim, Heidelberg University Mannheim Germany
| | - Andreas Reiter
- Department of Hematology and Oncology University Medical Centre Mannheim, Heidelberg University Mannheim Germany
| | - Tim H. Brümmendorf
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Steffen Koschmieder
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
| | - Nicolas Chatain
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Faculty of Medicine RWTH Aachen University Aachen Germany
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5
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Cosimo E, Tarafdar A, Moles MW, Holroyd AK, Malik N, Catherwood MA, Hay J, Dunn KM, Macdonald AM, Guichard SM, O'Rourke D, Leach MT, Sansom OJ, Cosulich SC, McCaig AM, Michie AM. AKT/mTORC2 Inhibition Activates FOXO1 Function in CLL Cells Reducing B-Cell Receptor-Mediated Survival. Clin Cancer Res 2019; 25:1574-1587. [PMID: 30559170 PMCID: PMC6398589 DOI: 10.1158/1078-0432.ccr-18-2036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 11/01/2018] [Accepted: 12/06/2018] [Indexed: 01/02/2023]
Abstract
PURPOSE To determine whether inhibition of mTOR kinase-mediated signaling represents a valid therapeutic approach for chronic lymphocytic leukemia (CLL). EXPERIMENTAL DESIGN Stratification of mTOR activity was carried out in patients with primary CLL samples and an aggressive CLL-like mouse model. The potency of dual mTOR inhibitor AZD8055 to induce apoptosis in primary CLL cells was assessed in the presence/absence of B-cell receptor (BCR) ligation. Furthermore, we addressed the molecular and functional impact of dual mTOR inhibition in combination with BTK inhibitor ibrutinib. RESULTS Differential regulation of basal mTORC1 activity was observed in poor prognostic CLL samples, with elevated p4EBP1T37/46 and decreased p70S6 kinase activity, suggesting that dual mTORC1/2 inhibitors may exhibit improved response in poor prognostic CLL compared with rapalogs. AZD8055 treatment of primary CLL cells significantly reduced CLL survival in vitro compared with rapamycin, preferentially targeting poor prognostic subsets and overcoming BCR-mediated survival advantages. Furthermore, AZD8055, and clinical analog AZD2014, significantly reduced CLL tumor load in mice. AKT substrate FOXO1, while overexpressed in CLL cells of poor prognostic patients in LN biopsies, peripheral CLL cells, and mouse-derived CLL-like cells, appeared to be inactive. AZD8055 treatment partially reversed FOXO1 inactivation downstream of BCR crosslinking, significantly inhibiting FOXO1T24 phosphorylation in an mTORC2-AKT-dependent manner, to promote FOXO1 nuclear localization, activity, and FOXO1-mediated gene regulation. FOXO1 activity was further significantly enhanced on combining AZD8055 with ibrutinib. CONCLUSIONS Our studies demonstrate that dual mTOR inhibitors show promise as future CLL therapies, particularly in combination with ibrutinib.
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MESH Headings
- Animals
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Disease Models, Animal
- Drug Synergism
- Female
- Forkhead Box Protein O1/genetics
- Forkhead Box Protein O1/metabolism
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/mortality
- Male
- Mechanistic Target of Rapamycin Complex 2/antagonists & inhibitors
- Mechanistic Target of Rapamycin Complex 2/metabolism
- Mice
- Mice, Transgenic
- Prognosis
- Protein Kinase Inhibitors/pharmacology
- Protein Kinase Inhibitors/therapeutic use
- Proto-Oncogene Proteins c-akt/antagonists & inhibitors
- Proto-Oncogene Proteins c-akt/metabolism
- Receptors, Antigen, B-Cell/metabolism
- Signal Transduction/drug effects
- Treatment Outcome
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Emilio Cosimo
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Anuradha Tarafdar
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Michael W Moles
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Ailsa K Holroyd
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Natasha Malik
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Mark A Catherwood
- Department of Haematology, Belfast City Hospital, Belfast, United Kingdom
| | - Jodie Hay
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Karen M Dunn
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Alan M Macdonald
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | | | - Declan O'Rourke
- Department of Histopathology, Belfast City Hospital, Belfast, United Kingdom
| | - Michael T Leach
- Department of Haematology, Gartnavel General Hospital, Glasgow, United Kingdom
| | - Owen J Sansom
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow, United Kingdom
| | - Sabina C Cosulich
- Bioscience, Oncology, IMED Biotech Unit, AstraZeneca, Cambridge, United Kingdom
| | - Alison M McCaig
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
- Royal Alexandra Hospital, Paisley, United Kingdom
| | - Alison M Michie
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.
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Saba NS, Angelova M, Lobelle-Rich PA, Levy LS. Disruption of pre-B-cell receptor signaling jams the WNT/β-catenin pathway and induces cell death in B-cell acute lymphoblastic leukemia cell lines. Leuk Res 2015; 39:S0145-2126(15)30355-6. [PMID: 26298175 DOI: 10.1016/j.leukres.2015.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/04/2015] [Accepted: 08/06/2015] [Indexed: 11/28/2022]
Abstract
Targeting components of the B-cell receptor (BCR) pathway have dramatically improved clinical outcomes in a variety of B-cell malignancies. Despite the well-documented pathogenic role of BCR precursor (pre-BCR) pathway in B-cell acute lymphoblastic leukemia (B-ALL), there is limited available data of therapies that aim to disrupt this pathway. To investigate the role of protein kinase Cβ (PKCβ), a crucial mediator of BCR and pre-BCR signaling, in B-ALL survival, we studied the activity of the PKCβ selective inhibitor enzastaurin (ENZ) in seven B-ALL cell lines. Treatment with ENZ resulted in a dose- and time-dependent growth inhibition in all cell lines with a relatively higher efficacy in pro-B ALL with translocation t(4;11)(q21;q23). The mechanism of growth inhibition was by apoptotic induction and cell cycle arrest. A rapid reduction in phosphorylation of AKT and its downstream target glycogen synthase kinase 3β (GSK3β) were observed at 30min after treatment and remaining for 48h. The reduction in GSK3β phosphorylation was associated with a paradoxical accumulation of β-catenin, which was due to a transient loss of β-catenin phosphorylation at ser33-37. In addition, accumulation of β-catenin was associated with downregulation of c-Myc, upregulatiuon of c-Jun, and a subsequent protective effect on the tumor suppressor p73. Data in this paper were presented in part at 2012 American Society of Hematology Annual Meeting, abstract 1350.
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Affiliation(s)
- Nakhle S Saba
- Section of Hematology and Medical Oncology, Department of Medicine, Tulane University, New Orleans, LA 70112, USA.
| | - Magdalena Angelova
- Department of Microbiology and Immunology, Harvard Medical School, Boston, MA 02115, USA
| | - Patricia A Lobelle-Rich
- Section of Hematology and Medical Oncology, Department of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Laura S Levy
- Department of Microbiology and Immunology, Tulane University, New Orleans, LA 70112, USA
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