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Krasavin M, Adamchik M, Bubyrev A, Heim C, Maiwald S, Zhukovsky D, Zhmurov P, Bunev A, Hartmann MD. Synthesis of novel glutarimide ligands for the E3 ligase substrate receptor Cereblon (CRBN): Investigation of their binding mode and antiproliferative effects against myeloma cell lines. Eur J Med Chem 2023; 246:114990. [PMID: 36476642 DOI: 10.1016/j.ejmech.2022.114990] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 11/04/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
To expand the chemical toolkit for targeted protein degradation, we report the generation of a new series of non-thalidomide Cereblon (CRBN) ligands. Readily available 2-methylidene glutarimide was converted to a series of 2-((hetero)aryl(methyl))thio glutarimides via the thio-Michael addition reaction. The compounds thus synthesized were evaluated for their affinity to the thalidomide-binding domain of human CRBN and their binding modes studied via X-ray crystallography. This helped identify several promising glutarimide derivatives which bind stronger to CRBN compared to thalidomide and contain a functional group which permits further chemical conjugation. Oxidation of the sulfur atom in a select group of 2-((hetero)aryl(methyl))thio glutarimides produced the respective sulfones which were found to possess a markedly stronger antiproliferative profile against multiple myeloma cell lines and a sophisticated structural binding mode with additional hydrogen bonding interactions. The newly identified Cereblon ligands form the basis for the synthesis of novel PROTAC protein degraders.
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Affiliation(s)
- Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation; Immanuel Kant Baltic Federal University, Kaliningrad, 236041, Russian Federation.
| | - Maria Adamchik
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Andrey Bubyrev
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Christopher Heim
- Department of Protein Evolution, Max Planck Institute for Biology, Tübingen, Germany; Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Samuel Maiwald
- Department of Protein Evolution, Max Planck Institute for Biology, Tübingen, Germany
| | - Daniil Zhukovsky
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Petr Zhmurov
- Saint Petersburg State University, Saint Petersburg, 199034, Russian Federation
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russian Federation
| | - Marcus D Hartmann
- Department of Protein Evolution, Max Planck Institute for Biology, Tübingen, Germany; Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany.
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2
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Synthesis of novel glutarimide derivatives via the Michael addition of (hetero)aromatic thiols: pronounced effect of sulfur oxidation on cytotoxicity towards multiple myeloma cell lines. MENDELEEV COMMUNICATIONS 2023. [DOI: 10.1016/j.mencom.2023.01.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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3
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Krasavin M, Bubyrev A, Kazantsev A, Heim C, Maiwald S, Zhukovsky D, Dar’in D, Hartmann MD, Bunev A. Replacing the phthalimide core in thalidomide with benzotriazole. J Enzyme Inhib Med Chem 2022; 37:527-530. [PMID: 35220840 PMCID: PMC8890552 DOI: 10.1080/14756366.2021.2024525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The advent of proteolysis-targeting chimaeras (PROTACs) mandates that new ligands for the recruitment of E3 ligases are discovered. The traditional immunomodulatory drugs (IMiDs) such as thalidomide and its analogues (all based on the phthalimide glutarimide core) bind to Cereblon, the substrate receptor of the CRL4ACRBN E3 ligase. We designed a thalidomide analogue in which the phthalimide moiety was replaced with benzotriazole, using an innovative synthesis strategy. Compared to thalidomide, the resulting “benzotriazolo thalidomide” has a similar binding mode, but improved properties, as revealed in crystallographic analyses, affinity assays and cell culture.
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Affiliation(s)
- Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Andrey Bubyrev
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Alexander Kazantsev
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Christopher Heim
- Department of Protein Evolution, Max Planck Institute for Developmental Biology, Tübingen, Germany
| | - Samuel Maiwald
- Department of Protein Evolution, Max Planck Institute for Developmental Biology, Tübingen, Germany
| | - Daniil Zhukovsky
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Dmitry Dar’in
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Marcus D. Hartmann
- Department of Protein Evolution, Max Planck Institute for Developmental Biology, Tübingen, Germany
| | - Alexander Bunev
- Medicinal Chemistry Center, Togliatti State University, Togliatti, Russia
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4
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Manley PW, Caravatti G, Furet P, Roesel J, Tran P, Wagner T, Wartmann M. Comparison of the Kinase Profile of Midostaurin (Rydapt) with That of Its Predominant Metabolites and the Potential Relevance of Some Newly Identified Targets to Leukemia Therapy. Biochemistry 2018; 57:5576-5590. [PMID: 30148617 DOI: 10.1021/acs.biochem.8b00727] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The multitargeted protein kinase inhibitor midostaurin is approved for the treatment of both newly diagnosed FLT3-mutated acute myeloid leukemia (AML) and KIT-driven advanced systemic mastocytosis. AML is a heterogeneous malignancy, and investigational drugs targeting FLT3 have shown disparate effects in patients with FLT3-mutated AML, probably as a result of their inhibiting different targets and pathways at the administered doses. However, the efficacy and side effects of drugs do not just reflect the biochemical and pharmacodynamic properties of the parent compound but are often comprised of complex cooperative effects between the properties of the parent and active metabolites. Following chronic dosing, two midostaurin metabolites attain steady-state plasma trough levels greater than that of the parent drug. In this study, we characterized these metabolites and determined their profiles as kinase inhibitors using radiometric transphosphorylation assays. Like midostaurin, the metabolites potently inhibit mutant forms of FLT3 and KIT and several additional kinases that either are directly involved in the deregulated signaling pathways or have been implicated as playing a role in AML via stromal support, such as IGF1R, LYN, PDPK1, RET, SYK, TRKA, and VEGFR2. Consequently, a complex interplay between the kinase activities of midostaurin and its metabolites is likely to contribute to the efficacy of midostaurin in AML and helps to engender the distinctive effects of the drug compared to those of other FLT3 inhibitors in this malignancy.
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Affiliation(s)
- Paul W Manley
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
| | - Giorgio Caravatti
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
| | - Pascal Furet
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
| | - Johannes Roesel
- Oncology Disease Area, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
| | - Phi Tran
- Department of Drug Metabolism and Pharmacokinetics , Novartis Institutes for Biomedical Research , East Hanover , New Jersey 07936 , United States
| | - Trixie Wagner
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
| | - Markus Wartmann
- Oncology Disease Area, Novartis Institutes for Biomedical Research , Novartis International AG , CH-4002 Basel , Switzerland
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5
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Bosseler M, Marani V, Broukou A, Lequeux A, Kaoma T, Schlesser V, François JH, Palissot V, Berchem GJ, Aouali N, Janji B. Inhibition of HIF1α-Dependent Upregulation of Phospho-l-Plastin Resensitizes Multiple Myeloma Cells to Frontline Therapy. Int J Mol Sci 2018; 19:ijms19061551. [PMID: 29882856 PMCID: PMC6032243 DOI: 10.3390/ijms19061551] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/08/2018] [Accepted: 05/12/2018] [Indexed: 12/18/2022] Open
Abstract
The introduction of novel frontline agents in multiple myeloma (MM), like immunomodulatory drugs and proteasome inhibitors, has improved the overall survival of patients. Yet, MM is still not curable, and drug resistance (DR) remains the main challenge. To improve the understanding of DR in MM, we established a resistant cell line (MOLP8/R). The exploration of DR mechanisms yielded an overexpression of HIF1α, due to impaired proteasome activity of MOLP8/R. We show that MOLP8/R, like other tumor cells, overexpressing HIF1α, have an increased resistance to the immune system. By exploring the main target genes regulated by HIF1α, we could not show an overexpression of these targets in MOLP8/R. We, however, show that MOLP8/R cells display a very high overexpression of LCP1 gene (l-Plastin) controlled by HIF1α, and that this overexpression also exists in MM patient samples. The l-Plastin activity is controlled by its phosphorylation in Ser5. We further show that the inhibition of l-Plastin phosphorylation restores the sensitivity of MOLP8/R to immunomodulatory drugs (IMiDs) and proteasome inhibitors (PIs). Our results reveal a new target gene of DR, controlled by HIF1α.
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Affiliation(s)
- Manon Bosseler
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Vanessa Marani
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Angelina Broukou
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Amandine Lequeux
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Tony Kaoma
- Bioinformatics and Modelling, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Vincent Schlesser
- Laboratory of Hematology, Centre Hospitalier de Luxembourg (CHL), L-1526 Luxembourg City, Luxembourg.
| | - Jean-Hugues François
- Laboratory of Hematology, Centre Hospitalier de Luxembourg (CHL), L-1526 Luxembourg City, Luxembourg.
| | - Valérie Palissot
- Laboratory of Oncolytic-Virus-Immuno-Therapeutics, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Guy J Berchem
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
- Laboratory of Hematology, Centre Hospitalier de Luxembourg (CHL), L-1526 Luxembourg City, Luxembourg.
| | - Nasséra Aouali
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
| | - Bassam Janji
- Laboratory of Experimental Cancer Research, Luxembourg Institute of Health (LIH), L-1526 Luxembourg City, Luxembourg.
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6
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Zlamalikova L, Moulis M, Salek D, Jarkovsky J, Smarda J, Smardova J. Expression of D-type cyclins in mantle cell and diffuse large B-cell lymphomas. Oncol Rep 2016; 35:2673-80. [PMID: 26985765 DOI: 10.3892/or.2016.4658] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 12/07/2015] [Indexed: 11/06/2022] Open
Abstract
D-type cyclins are involved in cell cycle regulation and play an important role in the pathogenesis of lymphomas. Aberrant expression of cyclin D1 is associated with mantle cell lymphoma (MCL) and serves as a diagnostic marker of MCL. Analysis of cyclin D expression in tumor tissues of patients with diffuse large B-cell lymphoma (DLBCL) which comprises a heterogeneous group of tumors may contribute to their stratification. We analyzed expression of cyclin D1, D2, and D3 mRNAs in 30 MCL and 104 DLBCL patients using qRT-PCR and addressed their significance for disease outcome. We confirmed a high level of cyclin D1 mRNA in 29 MCL cases (97%). One case (3%) was identified as positive for cyclin D2. Expression of cyclin D1 was limited to MCL and did not occur in DLBCL. Overexpression of cyclin D2, which is rare in MCL, occurred more frequently in DLBCL (11 cases, 10.6%). We showed that high expression of cyclin D2 in DLBCL cases de novo decreased the overall survival rate (P=0.016) and progression-free survival (P=0.009). The expression pattern of cyclin D3 was similar in both types of studied lymphomas and it did not affect the disease outcome.
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Affiliation(s)
- Lenka Zlamalikova
- Department of Pathology, University Hospital, 625 00 Brno, Czech Republic
| | - Mojmir Moulis
- Department of Pathology, University Hospital, 625 00 Brno, Czech Republic
| | - David Salek
- Department of Hematooncology, University Hospital, 625 00 Brno, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic
| | - Jan Smarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic
| | - Jana Smardova
- Department of Pathology, University Hospital, 625 00 Brno, Czech Republic
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7
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Hernando H, Gelato KA, Lesche R, Beckmann G, Koehr S, Otto S, Steigemann P, Stresemann C. EZH2 Inhibition Blocks Multiple Myeloma Cell Growth through Upregulation of Epithelial Tumor Suppressor Genes. Mol Cancer Ther 2015; 15:287-98. [DOI: 10.1158/1535-7163.mct-15-0486] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 11/09/2015] [Indexed: 11/16/2022]
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8
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Jiang H, Acharya C, An G, Zhong M, Feng X, Wang L, Dasilva N, Song Z, Yang G, Adrian F, Qiu L, Richardson P, Munshi NC, Tai YT, Anderson KC. SAR650984 directly induces multiple myeloma cell death via lysosomal-associated and apoptotic pathways, which is further enhanced by pomalidomide. Leukemia 2015; 30:399-408. [PMID: 26338273 DOI: 10.1038/leu.2015.240] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/20/2015] [Accepted: 08/21/2015] [Indexed: 12/22/2022]
Abstract
The anti-CD38 monoclonal antibody SAR650984 (SAR) is showing promising clinical activity in treatment of relapsed and refractory multiple myeloma (MM). Besides effector-mediated antibody-dependent cellular cytotoxicity and complement-mediated cytotoxicity, we here define molecular mechanisms of SAR-directed MM cell death and enhanced anti-MM activity triggered by SAR with Pomalidomide (Pom). Without Fc-cross-linking agents or effector cells, SAR specifically induces homotypic aggregation (HA)-associated cell death in MM cells dependent on the level of cell surface CD38 expression, actin cytoskeleton and membrane lipid raft. SAR and its F(ab)'2 fragments trigger caspase 3/7-dependent apoptosis in MM cells highly expressing CD38, even with p53 mutation. Importantly, SAR specifically induces lysosome-dependent cell death (LCD) by enlarging lysosomes and increasing lysosomal membrane permeabilization associated with leakage of cathepsin B and LAMP-1, regardless of the presence of interleukin-6 or bone marrow stromal cells. Conversely, the lysosomal vacuolar H+-ATPase inhibitor blocks SAR-induced LCD. SAR further upregulates reactive oxygen species. Pom enhances SAR-induced direct and indirect killing even in MM cells resistant to Pom/Len. Taken together, SAR is the first therapeutic monoclonal antibody mediating direct cytotoxicity against MM cells via multiple mechanisms of action. Our data show that Pom augments both direct and effector cell-mediated MM cytotoxicity of SAR, providing the framework for combination clinical trials.
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Affiliation(s)
- H Jiang
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.,Myeloma and Lymphoma Centre, Department of Hematology, Chang Zheng Hospital, The Second Military Medical University, Shanghai, China
| | - C Acharya
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - G An
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - M Zhong
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - X Feng
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - L Wang
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - N Dasilva
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Z Song
- Sanofi Oncology, Cambridge, MA, USA
| | - G Yang
- Sanofi Oncology, Cambridge, MA, USA
| | - F Adrian
- Sanofi Oncology, Cambridge, MA, USA
| | - L Qiu
- Institute of Hematology, CAMS & PUMC, Tianjin, China
| | - P Richardson
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - N C Munshi
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Y-T Tai
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - K C Anderson
- LeBow Institute for Myeloma Therapeutics and the Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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9
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Glauer J, Pletz N, Schön M, Schneider P, Liu N, Ziegelbauer K, Emmert S, Wulf GG, Schön MP. A novel selective small-molecule PI3K inhibitor is effective against human multiple myeloma in vitro and in vivo. Blood Cancer J 2013; 3:e141. [PMID: 24013662 PMCID: PMC3789203 DOI: 10.1038/bcj.2013.37] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 07/13/2013] [Accepted: 07/19/2013] [Indexed: 12/24/2022] Open
Abstract
Developing effective therapies against multiple myeloma (MM) is an unresolved challenge. Phosphatidylinositol-3-kinase (PI3K) activation may be associated with tumor progression and drug resistance, and inhibiting PI3K can induce apoptosis in MM cells. Thus, targeting of PI3K is predicted to increase the susceptibility of MM to anticancer therapy. The lead compound of a novel class of PI3K inhibitors, BAY80-6946 (IC50=0.5 nM against PI3K-α), was highly efficacious in four different MM cell lines, where it induced significant antitumoral effects in a dose-dependent manner. The compound inhibited cell cycle progression and increased apoptosis (P<0.001 compared with controls). Moreover, it abrogated the stimulation conferred by insulin-like growth-factor-1, a mechanism relevant for MM progression. These cellular effects were paralleled by decreased Akt phosphorylation, the main downstream target of PI3K. Likewise, profound antitumoral activity was observed ex vivo, as BAY80-6946 significantly inhibited proliferation of freshly isolated myeloma cells from three patients (P<0.001 compared with vehicle). In addition, BAY80-6946 showed convincing in vivo activity against the human AMO-1 and MOLP-8 myeloma cell lines in a preclinical murine xenograft model, where treatment with 6 mg/kg every other day for 2 weeks reduced the cell numbers by 87.0% and 69.3%, respectively (P<0.001 compared with vehicle), without overt toxicity in treated animals.
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Affiliation(s)
- J Glauer
- Department of Dermatology, Venereology and Allergology, University Medical Center, Georg August University, Göttingen, Germany
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10
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Marrow stromal cells induce B7-H1 expression on myeloma cells, generating aggressive characteristics in multiple myeloma. Leukemia 2012; 27:464-72. [DOI: 10.1038/leu.2012.213] [Citation(s) in RCA: 187] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Abstract
TGF-β-activated kinase 1 (TAK1), a member of the MAPK kinase family, plays a key role in B-cell growth and development. In the present study, we examined the potential role of TAK1 as a therapeutic target for lymphoma. Here, we show that the active phosphorylated form of TAK1 is abundantly expressed in a panel of lymphoma cell lines, including mantle cell, anaplastic large cell, and Hodgkin lymphoma cell lines. Silencing TAK1 expression via the use of siRNA inhibited the activation of NF-κB and p38 and induced apoptosis in lymphoma cell lines. Moreover, submicromolar concentrations of AZ-TAK1, a novel ATP-competitive small molecule inhibitor of TAK1, dephosphorylated TAK1, p38, and IκB-α in lymphoma cell lines. These molecular events were associated with the release of cytochrome c into the cytosol, down-regulation of X-linked inhibitor of apoptosis, activation of caspase 9, and induction of apoptosis. We also demonstrate that primary lymphoma cells express TAK1 and pTAK1 and were sensitive to AZ-TAK1-mediated cell death. Collectively, our data demonstrate an essential role for TAK1 in regulating critical survival mechanisms in lymphoma and suggest that it may serve as a therapeutic target.
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Aouali N, Palissot V, El-Khoury V, Moussay E, Janji B, Pierson S, Brons NHC, Kellner L, Bosseler M, Van Moer K, Berchem G. Peroxisome proliferator-activated receptor γ agonists potentiate the cytotoxic effect of valproic acid in multiple myeloma cells. Br J Haematol 2009; 147:662-71. [DOI: 10.1111/j.1365-2141.2009.07902.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Gloghini A, Buglio D, Khaskhely NM, Georgakis G, Orlowski RZ, Neelapu SS, Carbone A, Younes A. Expression of histone deacetylases in lymphoma: implication for the development of selective inhibitors. Br J Haematol 2009; 147:515-25. [PMID: 19775297 DOI: 10.1111/j.1365-2141.2009.07887.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Unselective histone deacetylase (HDAC) inhibitors are a promising novel therapy for lymphoid malignancies. However, these treatments remain empiric as the pattern of HDAC enzymes in different types of cancer, including lymphoid malignancies, remains unknown. We examined the expression of class I and class II HDACs in a panel of cell lines and tissue sections from primary lymphoid tumours. Class I enzymes were highly expressed in all cell lines and primary tumours studied, including the non-malignant reactive cells in the Hodgkin lymphoma (HL) microenvironment. The most frequently altered HDAC expression was HDAC6, as it was either weakly expressed or undetected in 9/14 (64%) of lymphoid cell lines and in 83/89 (93%) of primary lymphoma tissue specimens, including 50/52 (96%) cases of diffuse large B-cell lymphoma, and 18/22 (82%) cases of classical HL. Cell lines that had low expression level of HDAC6 demonstrated aberrant expression of hyper-acetylated tubulin, and were found to be more sensitive to the growth inhibitory effects of the class I HDAC inhibitor MGCD0103. Collectively, our data demonstrate that HDAC6 is rarely expressed in primary lymphoma cases, suggesting that it may not be an important therapeutic target in these lymphoid malignancies.
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14
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Krejcí J, Harnicarová A, Streitová D, Hájek R, Pour L, Kozubek S, Bártová E. Epigenetics of multiple myeloma after treatment with cytostatics and gamma radiation. Leuk Res 2009; 33:1490-8. [PMID: 19362368 DOI: 10.1016/j.leukres.2009.03.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 03/09/2009] [Accepted: 03/13/2009] [Indexed: 11/19/2022]
Abstract
Genetic and epigenetic changes in multiple myeloma (MM) correlate with the stage of the disease. Therefore, we investigated how cytostatics and gamma radiation influence MM-associated histone modifications. ChIP-PCR and ChIP-on-chip technologies were used to quantify H3K9 acetylation and H3K9 dimethylation at select loci in MM patients, lymphoblastoid ARH-77, and myeloma MOLP-8 cells. Genome-wide analysis revealed that the cytostatic, melphalan, increased H3K9 acetylation at multiple gene promoters in ARH-77 cells. Melphalan and gamma radiation also influenced histone modification of prognostically important c-myc and CCND1 genes in ARH-77 and MOLP-8 cells. Moreover, H3K9 acetylation at c-myc and CCND1 promoters was increased in individual MM patients after melphalan treatment. Western blotting revealed that these effects were accompanied by changes in c-MYC and cyclin D1 protein levels. Taken together, we showed that cytostatics significantly alter histone modification of tumor-related genes which is indispensable for understanding cancer therapies.
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Affiliation(s)
- Jana Krejcí
- Institute of Biophysics, Academy of Sciences of the Czech Republic, 612 65 Brno, Czech Republic
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15
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Nair JR, Rozanski C, Lee KP. CD28: old dog, new tricks. CD28 in plasma cell/multiple myeloma biology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 633:55-69. [PMID: 19209681 DOI: 10.1007/978-0-387-79311-5_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jayakumar R Nair
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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