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Bojarczuk K, Bobrowicz M, Dwojak M, Miazek N, Zapala P, Bunes A, Siernicka M, Rozanska M, Winiarska M. B-cell receptor signaling in the pathogenesis of lymphoid malignancies. Blood Cells Mol Dis 2015; 55:255-65. [PMID: 26227856 DOI: 10.1016/j.bcmd.2015.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 06/21/2015] [Indexed: 11/17/2022]
Abstract
B-cell receptor (BCR) signaling pathway plays a central role in B-lymphocyte development and initiation of humoral immunity. Recently, BCR signaling pathway has been shown as a major driver in the pathogenesis of B-cell malignancies. As a result, a vast array of BCR-associated kinases has emerged as rational therapeutic targets changing treatment paradigms in B cell malignancies. Based on high efficacy in early-stage clinical trials, there is rapid clinical development of inhibitors targeting BCR signaling pathway. Here, we describe the essential components of BCR signaling, their function in normal and pathogenic signaling and molecular effects of their inhibition in vitro and in vivo.
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Affiliation(s)
- Kamil Bojarczuk
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, Zwirki I Wigury 61, 02-091 Warsaw, Poland
| | - Malgorzata Bobrowicz
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, Zwirki I Wigury 61, 02-091 Warsaw, Poland
| | - Michal Dwojak
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, Zwirki I Wigury 61, 02-091 Warsaw, Poland
| | - Nina Miazek
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland
| | - Piotr Zapala
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland
| | - Anders Bunes
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland
| | - Marta Siernicka
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, Zwirki I Wigury 61, 02-091 Warsaw, Poland
| | - Maria Rozanska
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland
| | - Magdalena Winiarska
- Department of Immunology, Center for Biostructure Research, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland.
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353
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FDA-approved small-molecule kinase inhibitors. Trends Pharmacol Sci 2015; 36:422-39. [PMID: 25975227 DOI: 10.1016/j.tips.2015.04.005] [Citation(s) in RCA: 698] [Impact Index Per Article: 77.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 04/02/2015] [Accepted: 04/08/2015] [Indexed: 02/07/2023]
Abstract
Kinases have emerged as one of the most intensively pursued targets in current pharmacological research, especially for cancer, due to their critical roles in cellular signaling. To date, the US FDA has approved 28 small-molecule kinase inhibitors, half of which were approved in the past 3 years. While the clinical data of these approved molecules are widely presented and structure-activity relationship (SAR) has been reported for individual molecules, an updated review that analyzes all approved molecules and summarizes current achievements and trends in the field has yet to be found. Here we present all approved small-molecule kinase inhibitors with an emphasis on binding mechanism and structural features, summarize current challenges, and discuss future directions in this field.
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354
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Asami T, Kawahata W, Sawa M. TR-FRET binding assay targeting unactivated form of Bruton’s tyrosine kinase. Bioorg Med Chem Lett 2015; 25:2033-6. [DOI: 10.1016/j.bmcl.2015.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/30/2015] [Accepted: 04/01/2015] [Indexed: 11/26/2022]
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355
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Kawahata W, Asami T, Fujii I, Sawa M. ‘Turn On/Off’ fluorescence probe for the screening of unactivated Bruton’s tyrosine kinase. Bioorg Med Chem Lett 2015; 25:2141-5. [DOI: 10.1016/j.bmcl.2015.03.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/20/2015] [Accepted: 03/24/2015] [Indexed: 10/23/2022]
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356
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Xu A, Zhang Y, Ran T, Liu H, Lu S, Xu J, Xiong X, Jiang Y, Lu T, Chen Y. Quantitative structure-activity relationship study on BTK inhibitors by modified multivariate adaptive regression spline and CoMSIA methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2015; 26:279-300. [PMID: 25906044 DOI: 10.1080/1062936x.2015.1032346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Bruton's tyrosine kinase (BTK) plays a crucial role in B-cell activation and development, and has emerged as a new molecular target for the treatment of autoimmune diseases and B-cell malignancies. In this study, two- and three-dimensional quantitative structure-activity relationship (2D and 3D-QSAR) analyses were performed on a series of pyridine and pyrimidine-based BTK inhibitors by means of genetic algorithm optimized multivariate adaptive regression spline (GA-MARS) and comparative molecular similarity index analysis (CoMSIA) methods. Here, we propose a modified MARS algorithm to develop 2D-QSAR models. The top ranked models showed satisfactory statistical results (2D-QSAR: Q(2) = 0.884, r(2) = 0.929, r(2)pred = 0.878; 3D-QSAR: q(2) = 0.616, r(2) = 0.987, r(2)pred = 0.905). Key descriptors selected by 2D-QSAR were in good agreement with the conclusions of 3D-QSAR, and the 3D-CoMSIA contour maps facilitated interpretation of the structure-activity relationship. A new molecular database was generated by molecular fragment replacement (MFR) and further evaluated with GA-MARS and CoMSIA prediction. Twenty-five pyridine and pyrimidine derivatives as novel potential BTK inhibitors were finally selected for further study. These results also demonstrated that our method can be a very efficient tool for the discovery of novel potent BTK inhibitors.
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Affiliation(s)
- A Xu
- a Laboratory of Molecular Design and Drug Discovery, School of Basic Science , China Pharmaceutical University , Nanjing , Jiangsu , P.R. China
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357
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Nakasone H, Sahaf B, Miklos DB. Therapeutic benefits targeting B-cells in chronic graft-versus-host disease. Int J Hematol 2015; 101:438-51. [PMID: 25812839 DOI: 10.1007/s12185-015-1782-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 03/16/2015] [Indexed: 12/21/2022]
Abstract
Allogeneic hematopoietic cell transplantation (allo-HCT) can be a curative strategy for hematological diseases, and the indications for allo-HCT have broadened widely due to recent progress in supportive strategies. However, patients must overcome various complications and chronic graft-versus-host disease (cGVHD) remains the most common allo-HCT cause of long-term morbidity and mortality. cGVHD is difficult to biologically assess due to the heterogeneity of cGVHD symptoms, and the pathogenesis of cGVHD has yet to be established. Recent experimental model progress has suggested that B-cells play a critical role in cGVHD development. Consistent with these experimental results, some clinical studies investigating B-cell depletion and modulation of B-cell signaling pathways have decreased cGVHD incidence and provided some therapeutic benefit. However, randomized control studies are necessary to confirm the efficacy of B-cell targeting drugs for cGVHD. Here, we review the pathophysiology of cGVHD, especially focusing on the role of B-cell immunity, and discuss the efficacy of both B-cell depletion and modulation of B-cell signaling pathways in human cGVHD prevention, initial treatment, and salvage treatment.
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Affiliation(s)
- Hideki Nakasone
- Division of Blood and Marrow Transplantation, Stanford University School of Medicine, 269 West Campus Dr., CCSR #2205, Stanford, CA, 94305, USA
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358
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Izumi M, Tsunemine H, Suzuki Y, Tomita A, Kusumoto T, Kodaka T, Itoh K, Takahashi T. Successful treatment of refractory cold hemagglutinemia in MYD88 L265P mutation-negative Waldenström’s macroglobulinemia with bortezomib. Int J Hematol 2015; 102:238-43. [DOI: 10.1007/s12185-015-1775-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 11/28/2022]
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Abstract
The majority of patients with hairy cell leukemia (HCL) achieve a response to therapy with cladribine or pentostatin with or without rituximab. However, late relapses can occur. Treatment of relapsed HCL can be difficult due to a poor tolerance to chemotherapy, increased risk of infections and decreased responsiveness to chemotherapy. The identification of BRAFV600E mutations and the role of aberrant MEK kinase and Bruton's tyrosine kinase (BTK) pathways in the pathogenesis of HCL have helped to develop novel targeted therapies for these patients. Currently, the most promising therapeutic strategies for relapsed or refractory HCL include recombinant immunoconjugates targeting CD22 (e.g. moxetumomab pasudotox), BRAF inhibitors such as vemurafenib and B cell receptor signaling kinase inhibitors such as ibrutinib. Furthermore, the VH4-34 molecular variant of classic HCL has been identified to be less responsive to chemotherapy. Herein, we review the results of the ongoing clinical trials and potential future therapies for relapsed/refractory HCL.
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Affiliation(s)
- Preetesh Jain
- a Department of Leukemia , University of Texas M. D. Anderson Cancer Center , Houston , TX , USA
| | - Aaron Polliack
- b Department of Hematology , Hadassah University Hospital, Hebrew University Medical School , Jerusalem , Israel
| | - Farhad Ravandi
- a Department of Leukemia , University of Texas M. D. Anderson Cancer Center , Houston , TX , USA
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360
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Verstappen GM, Kroese FGM, Vissink A, Bootsma H. Pharmacotherapy for managing extraglandular symptoms of primary Sjögren’s syndrome. Expert Opin Orphan Drugs 2015. [DOI: 10.1517/21678707.2015.1010510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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361
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Hobeika E, Nielsen PJ, Medgyesi D. Signaling mechanisms regulating B-lymphocyte activation and tolerance. J Mol Med (Berl) 2015; 93:143-58. [PMID: 25627575 DOI: 10.1007/s00109-015-1252-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 12/15/2014] [Accepted: 12/25/2014] [Indexed: 01/01/2023]
Abstract
It is becoming more and more accepted that, in addition to producing autoantibodies, B lymphocytes have other important functions that influence the development of autoimmunity. For example, autoreactive B cells are able to produce inflammatory cytokines and activate pathogenic T cells. B lymphocytes can react to extracellular signals with a range of responses from anergy to autoreactivity. The final outcome is determined by the relative contribution of signaling events mediated by activating and inhibitory pathways. Besides the B cell antigen receptor (BCR), several costimulatory receptors expressed on B cells can also induce B cell proliferation and survival, or regulate antibody production. These include CD19, CD40, the B cell activating factor receptor, and Toll-like receptors. Hyperactivity of these receptors clearly contributes to breaking B-cell tolerance in several autoimmune diseases. Inhibitors of these activating signals (including protein tyrosine phosphatases, deubiquitinating enzymes and several adaptor proteins) are crucial to control B-cell activation and maintain B-cell tolerance. In this review, we summarize the inhibitory signaling mechanisms that counteract B-cell activation triggered by the BCR and the coreceptors.
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Affiliation(s)
- Elias Hobeika
- BIOSS Centre of Biological Signalling Studies, University of Freiburg and Department for Molecular Immunology, Faculty of Biology, University of Freiburg, 79104, Freiburg, Germany
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362
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Yang Y, Shi J, Gu Z, Salama ME, Das S, Wendlandt E, Xu H, Huang J, Tao Y, Hao M, Franqui R, Levasseur D, Janz S, Tricot G, Zhan F. Bruton tyrosine kinase is a therapeutic target in stem-like cells from multiple myeloma. Cancer Res 2015; 75:594-604. [PMID: 25589346 DOI: 10.1158/0008-5472.can-14-2362] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ibrutinib (Imbruvica), a small-drug inhibitor of Bruton tyrosine kinase (BTK), is currently undergoing clinical testing in patients with multiple myeloma, yet important questions on the role of BTK in myeloma biology and treatment are outstanding. Using flow-sorted side population cells from human myeloma cell lines and multiple myeloma primary samples as surrogate for the elusive multiple myeloma stem cell, we found that elevated expression of BTK in myeloma cells leads to AKT/WNT/β-catenin-dependent upregulation of key stemness genes (OCT4, SOX2, NANOG, and MYC) and enhanced self-renewal. Enforced transgenic expression of BTK in myeloma cells increased features of cancer stemness, including clonogenicity and resistance to widely used myeloma drugs, whereas inducible knockdown of BTK abolished them. Furthermore, overexpression of BTK in myeloma cells promoted tumor growth in laboratory mice and rendered side population-derived tumors that contained high levels of BTK more sensitive to the selective, second-generation BTK inhibitor, CGI1746, than side population-derived tumors that harbored low levels of BTK. Taken together, these findings implicate BTK as a positive regulator of myeloma stemness and provide additional support for the clinical testing of BTK-targeted therapies in patients with myeloma.
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Affiliation(s)
- Ye Yang
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Jumei Shi
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhimin Gu
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Mohamed E Salama
- Department of Pathology, University of Utah, and Associated Regional University Pathologists (ARUP) Laboratories, Salt Lake City, Utah
| | - Satyabrata Das
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Erik Wendlandt
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Hongwei Xu
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Junwei Huang
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Yi Tao
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Mu Hao
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Reinaldo Franqui
- Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, Iowa
| | - Dana Levasseur
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Siegfried Janz
- Department of Pathology, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Guido Tricot
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa.
| | - Fenghuang Zhan
- Department of Internal Medicine, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa. Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, Iowa.
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363
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Fang Y, Chen S, Wang W, Shan X, Tao N. Real-Time Monitoring of Phosphorylation Kinetics with Self-Assembled Nano-oscillators. Angew Chem Int Ed Engl 2015; 54:2538-42. [DOI: 10.1002/anie.201411040] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 01/30/2023]
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364
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Fang Y, Chen S, Wang W, Shan X, Tao N. Real-Time Monitoring of Phosphorylation Kinetics with Self-Assembled Nano-oscillators. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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365
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Abstract
Ibrutinib is a Bruton tyrosine kinase inhibitor approved for the treatment of patients with relapsed refractory chronic lymphocytic leukemia (RR-CLL). We describe the characteristics, causes of discontinuation, and outcomes in patients who discontinued treatment with ibrutinib. One hundred twenty-seven patients were enrolled in various clinical trials of ibrutinib, with or without rituximab, at our center. Thirty-three (26%) patients have discontinued ibrutinib to date. The majority of those patients had high-risk features: 94% with unmutated immunoglobulin heavy chain variable gene rearrangement, 58% with del(17p) by fluorescence in situ hybridization, and 54% with a complex karyotype. Causes of discontinuation were disease transformation (7), progressive CLL (7), stem cell transplantation (3), adverse events (11), serious adverse events/deaths (3), and miscellaneous reasons (2). Twenty five patients (76%) died after discontinuing ibrutinib; the median overall survival was 3.1 months after discontinuation. Most patients with RR-CLL who discontinued ibrutinib early were difficult to treat and had poor outcomes.
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366
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Corneth OBJ, Klein Wolterink RGJ, Hendriks RW. BTK Signaling in B Cell Differentiation and Autoimmunity. Curr Top Microbiol Immunol 2015; 393:67-105. [PMID: 26341110 DOI: 10.1007/82_2015_478] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Since the original identification of Bruton's tyrosine kinase (BTK) as the gene defective in the primary immunodeficiency X-linked agammaglobulinemia (XLA) in 1993, our knowledge on the physiological function of BTK has expanded impressively. In this review, we focus on the role of BTK during B cell differentiation in vivo, both in the regulation of expansion and in the developmental progression of pre-B cells in the bone marrow and as a crucial signal transducer of signals downstream of the IgM or IgG B cell antigen receptor (BCR) in mature B cells governing proliferation, survival, and differentiation. In particular, we highlight BTK function in B cells in the context of host defense and autoimmunity. Small-molecule inhibitors of BTK have very recently shown impressive anti-tumor activity in clinical studies in patients with various B cell malignancies. Since promising effects of BTK inhibition were also seen in experimental animal models for lupus and rheumatoid arthritis, BTK may be a good target for controlling autoreactive B cells in patients with systemic autoimmune disease.
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Affiliation(s)
- Odilia B J Corneth
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Room Ee2251a, PO Box 2040, NL 3000, CA, Rotterdam, The Netherlands
| | - Roel G J Klein Wolterink
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Room Ee2251a, PO Box 2040, NL 3000, CA, Rotterdam, The Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Room Ee2251a, PO Box 2040, NL 3000, CA, Rotterdam, The Netherlands.
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367
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Wiestner A. BCR pathway inhibition as therapy for chronic lymphocytic leukemia and lymphoplasmacytic lymphoma. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2014; 2014:125-134. [PMID: 25696845 DOI: 10.1182/asheducation-2014.1.125] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Chronic lymphocytic leukemia (CLL) and lymphoplasmacytic lymphoma (LPL) are malignancies of mature B cells. In LPL, mutations of the adaptor protein MYD88 (L265P) in the Toll-like receptor pathway have been recognized recently as being a hallmark of the disease and indicate a dependence of the tumor on this pathway. In CLL, functional studies have implicated BCR activation in the tissue microenvironment as a pivotal pathway in the pathogenesis. Bruton's tyrosine kinase (BTK) and the PI3Kδ isoform are essential for BCR signaling and also seem to be required for signal transduction in LPL cells, even if the role of BCR signaling in this disease remains less well defined. Ibrutinib, a covalent inhibitor of BTK approved by the Food and Drug Administration as a second-line treatment for CLL, and idelalisib, a selective inhibitor of PI3Kδ, achieve excellent clinical responses in both diseases irrespective of classic markers indicating high-risk disease. Several additional inhibitors targeting BTK and PI3Kδ, as well as the spleen tyrosine kinase, have entered clinical trials. This review discusses the biologic basis for kinase inhibitors as targeted therapy for CLL and LPL and summarizes the clinical experience with these agents.
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Affiliation(s)
- Adrian Wiestner
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
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368
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Abstract
INTRODUCTION Bortezomib , the first proteasome inhibitor (PI) to be evaluated in humans, is approved in the USA and Europe for the treatment of patients with multiple myeloma, and in the USA for patients with relapsed mantle cell lymphoma (MCL). AREAS COVERED This review examines the role of bortezomib in the therapy of non-Hodgkin's lymphoma (NHL). Bortezomib may be particularly effective against the NF-κB-dependent activated B-cell subtype of diffuse large B-cell lymphoma. The combination of bortezomib with rituximab and dexamethasone represents a standard approach for the treatment of Waldenström's macroglobulinemia, and that with bendamustine and rituximab has demonstrated excellent efficacy in follicular lymphoma. Combinations with other novel agents, such as inhibitors of cyclin-dependent kinases or histone deacetylases, also hold substantial promise in NHL. Unmet needs in NHL, competitor compounds, chemistry, pharmacokinetics, pharmacodynamics and safety and tolerability of bortezomib are also discussed. EXPERT OPINION The success of bortezomib in MCL has validated the proteasome as a therapeutic target in NHL. Rational combinations, for example, with Bruton's tyrosine kinase inhibitors or BH3-mimetics, may hold the key to optimizing the therapeutic potential of PIs in NHL. Future trials are likely to involve newer agents with improved pharmacodynamic (e.g., carfilzomib, marizomib) or pharmacokinetic (e.g., ixazomib, oprozomib) properties.
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Affiliation(s)
- Prithviraj Bose
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA, USA
- Virginia Commonwealth University, Department of Internal Medicine, Richmond, VA, USA
| | - Michael S. Batalo
- Virginia Commonwealth University, Department of Internal Medicine, Richmond, VA, USA
| | - Beata Holkova
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA, USA
- Virginia Commonwealth University, Department of Internal Medicine, Richmond, VA, USA
| | - Steven Grant
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA, USA
- Virginia Commonwealth University, Department of Internal Medicine, Richmond, VA, USA
- Virginia Commonwealth University, Department of Microbiology and Immunology, Richmond, VA, USA
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, Richmond, VA, USA
- Virginia Commonwealth University, Department of Human and Molecular Genetics, Richmond, VA, USA
- Virginia Commonwealth University, Institute for Molecular Medicine, 401 College Street, P.O. Box 980035, Richmond, VA 23298, USA Tel: +1 804 828 5211
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369
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Michallet AS, Coiffier B. B-cell receptor stereotypy and chronic lymphocytic leukaemia. LANCET HAEMATOLOGY 2014; 1:e52-3. [PMID: 27030153 DOI: 10.1016/s2352-3026(14)00002-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Anne-Sophie Michallet
- Hospices Civils de Lyon, Lyon, France; University Lyon 1, Lyon, France; Hematology Department, Centre Hospitalier Lyon-Sud, 69310 Pierre-Benite, France
| | - Bertrand Coiffier
- Hospices Civils de Lyon, Lyon, France; University Lyon 1, Lyon, France; Hematology Department, Centre Hospitalier Lyon-Sud, 69310 Pierre-Benite, France.
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370
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Dunleavy K, Roschewski M, Wilson WH. Precision treatment of distinct molecular subtypes of diffuse large B-cell lymphoma: ascribing treatment based on the molecular phenotype. Clin Cancer Res 2014; 20:5182-93. [PMID: 25320368 PMCID: PMC7521674 DOI: 10.1158/1078-0432.ccr-14-0497] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although diffuse large B-cell lymphoma (DLBCL), the most common type of non-Hodgkin lymphoma, was once considered to be a single disease, novel insights into its biology have revealed that it is molecularly heterogeneous. Technologies such as gene expression profiling have revealed that DLBCL consists of at least three distinct molecular diseases that have disparate outcomes following standard therapy. These subtypes arise from different stages of B-cell differentiation and are characterized by distinct oncogenic activation mechanisms. This knowledge has led to the investigation of strategies and novel agents that have selective activity within molecular subtypes and sets the stage for an era of precision medicine in DLBCL therapeutics, where therapy can be ascribed based on molecular phenotype. This work offers the chance of improving the curability of DLBCL, particularly in the activated B-cell subtype, where standard approaches are inadequate for a high proportion of patients. See all articles in this CCR Focus section, "Paradigm Shifts in Lymphoma."
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Affiliation(s)
- Kieron Dunleavy
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland
| | - Mark Roschewski
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland
| | - Wyndham H Wilson
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland.
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371
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Seda V, Mraz M. B-cell receptor signalling and its crosstalk with other pathways in normal and malignant cells. Eur J Haematol 2014; 94:193-205. [PMID: 25080849 DOI: 10.1111/ejh.12427] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2014] [Indexed: 12/13/2022]
Abstract
The physiology of B cells is intimately connected with the function of their B-cell receptor (BCR). B-cell lymphomas frequently (dys)regulate BCR signalling and thus take advantage of this pre-existing pathway for B-cell proliferation and survival. This has recently been underscored by clinical trials demonstrating that small molecules (fosfamatinib, ibrutinib, idelalisib) inhibiting BCR-associated kinases (SYK, BTK, PI3K) have an encouraging clinical effect. Here we describe the current knowledge of the specific aspects of BCR signalling in diffuse large B-cell lymphoma (DLBCL), follicular lymphoma, chronic lymphocytic leukaemia (CLL) and normal B cells. Multiple factors can contribute to BCR pathway (dys)regulation in these malignancies and the activation of 'chronic' or 'tonic' BCR signalling. In lymphoma B cells, the balance of initiation, amplitude and duration of BCR activation can be influenced by a specific immunoglobulin structure, the expression and mutations of adaptor molecules (like GAB1, BLNK, GRB2, CARD11), the activity of kinases (like LYN, SYK, PI3K) or phosphatases (like SHIP-1, SHP-1 and PTEN) and levels of microRNAs. We also discuss the crosstalk of BCR with other signalling pathways (NF-κB, adhesion through integrins, migration and chemokine signalling) to emphasise that the 'BCR inhibitors' target multiple pathways interconnected with BCR, which might explain some of their clinical activity.
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Affiliation(s)
- Vaclav Seda
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
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Ibrutinib (ImbruvicaTM) potently inhibits ErbB receptor phosphorylation and cell viability of ErbB2-positive breast cancer cells. Invest New Drugs 2014; 32:1096-104. [PMID: 25081321 DOI: 10.1007/s10637-014-0141-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 07/21/2014] [Indexed: 12/20/2022]
Abstract
Ibrutinib (formerly PCI-32765) is a specific, irreversible, and potent inhibitor of Burton's tyrosine kinase (BTK) developed for the treatment of several forms of blood cancer. It is now an FDA-approved drug marketed under the name Imbruvica(TM) (Pharmacyclics, Inc.) and successfully used as an orally administered second-line drug in the treatment of mantle cell lymphoma. Since BTK is predominantly expressed in hematopoietic cells, the sensitivity of solid tumor cells to Ibrutinib has not been analyzed. In this study, we determined the effect of Ibrutinib on breast cancer cells. We demonstrate that Ibrutinib efficiently reduces the phosphorylation of the receptor tyrosine kinases ErbB1, ErbB2 and ErbB3, thereby suppressing AKT and MAPK signaling in ErbB2-positive (ErbB2+) breast cancer cell lines. Treatment with Ibrutinib significantly reduced the viability of ErbB2+ cell lines with IC50 values at nanomolar concentrations, suggesting therapeutic potential of Ibrutinib in breast cancer. Combined treatment with Ibrutinib and the dual PI3K/mTOR inhibitor BEZ235 synergistically reduces cell viability of ErbB2+ breast cancer cells. Combination indices below 0.25 at 50% inhibition of cell viability were determined by the Chou-Talalay method. Therefore, the combination of Ibrutinib and canonical PI3K pathway inhibitors could be a new and effective approach in the treatment of breast cancer with activated ErbB receptors. Ibrutinib could thus become a valuable component of targeted therapy in aggressive ErbB2+ breast cancer.
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374
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Quarona V, Ferri V, Chillemi A, Bolzoni M, Mancini C, Zaccarello G, Roato I, Morandi F, Marimpietri D, Faccani G, Martella E, Pistoia V, Giuliani N, Horenstein AL, Malavasi F. Unraveling the contribution of ectoenzymes to myeloma life and survival in the bone marrow niche. Ann N Y Acad Sci 2014; 1335:10-22. [DOI: 10.1111/nyas.12485] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Valeria Quarona
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
| | - Valentina Ferri
- Hematology and Blood and Marrow Transplantation (BMT) Center; University of Parma; Parma Italy
| | - Antonella Chillemi
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
| | - Marina Bolzoni
- Hematology and Blood and Marrow Transplantation (BMT) Center; University of Parma; Parma Italy
| | - Cristina Mancini
- Anatomia e Istologia Patologica; Azienda Ospedaliero-Universitaria di Parma; Parma Italy
| | - Gianluca Zaccarello
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
| | - Ilaria Roato
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
| | - Fabio Morandi
- Laboratorio di Oncologia; Istituto Giannina Gaslini; Genova Italy
| | | | | | - Eugenia Martella
- Anatomia e Istologia Patologica; Azienda Ospedaliero-Universitaria di Parma; Parma Italy
| | - Vito Pistoia
- Laboratorio di Oncologia; Istituto Giannina Gaslini; Genova Italy
| | - Nicola Giuliani
- Hematology and Blood and Marrow Transplantation (BMT) Center; University of Parma; Parma Italy
| | - Alberto L. Horenstein
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
| | - Fabio Malavasi
- Laboratory of Immunogenetics; Department of Medical Sciences and CeRMS; University of Torino; Torino Italy
- Transplantation Immunology; Città della Salute e della Scienza; Torino Italy
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375
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Norman P. Inducible tyrosine kinase inhibitors: a review of the patent literature (2010 - 2013). Expert Opin Ther Pat 2014; 24:979-91. [PMID: 24990480 DOI: 10.1517/13543776.2014.936381] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION The non-receptor tyrosine kinase, inducible tyrosine kinase (Itk), plays an important role in thymus(T)-cell signalling and the production of pro-inflammatory cytokines. Itk, and the other Tec family members, Rlk and Tec, are viewed as attractive drug targets for new agents for the treatment of autoimmune and inflammatory diseases. Interest in Itk inhibitors is still modest compared to other kinases such as the Janus kinase (JAK) family or Syk. AREAS COVERED This article reviews the patent filings published from January 2010 to April 2014 that claim Itk inhibitors. It first considers those applications that claim selective, or apparently selective, Itk inhibitors. It then considers those applications that claim less-selective Itk inhibitors. The recent interest in irreversible Itk inhibitors is also discussed. EXPERT OPINION There is a difference of opinion as to the preferred utility for Itk inhibitors. Progress has been made in designing selective Itk inhibitors but little clinical progress. Until clinical data are available, it remains difficult to assess how well Itk inhibitors compare with JAK inhibitors as potential treatments for rheumatoid arthritis. However, animal data suggest that irreversible Itk inhibitors could be useful in treating asthma, whereas dual Itk inhibitors may have more utility in treating rheumatoid arthritis.
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Affiliation(s)
- Peter Norman
- Norman Consulting , 18 Pink Lane, Burnham, Bucks, SL1 8JW , UK
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376
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Chen Y, Wang M, Romaguera J. Current regimens and novel agents for mantle cell lymphoma. Br J Haematol 2014; 167:3-18. [PMID: 24974852 DOI: 10.1111/bjh.13000] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 05/28/2014] [Indexed: 02/02/2023]
Abstract
Mantle cell lymphoma is a heterogeneous subtype of non-Hodgkin lymphoma. Conventional treatment with immunochemotherapy followed by autologous stem cell transplantation or intensive immunochemotherapy alone has improved outcomes, but the disease remains incurable. Recent advances in basic and translational research have significantly enhanced our understanding of disease pathogenesis and have sparked the development of novel therapies. Novel agents include the proteasome inhibitor bortezomib, the immunomodulatory agent lenalidomide, the phosphatidylinositol-4,5-bisphosphate 3-kinase pathway inhibitor idelalisib and the Bruton tyrosine kinase inhibitor ibrutinib. Preliminary results from clinical trials, especially from studies of ibrutinib, have proven these agents to be effective. In ongoing studies, these agents are being integrated into conventional immunochemotherapy regimens to hopefully improve patient outcomes.
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Affiliation(s)
- Yiming Chen
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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