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Varrica C, Dias HS, Reis C, Carvalheiro M, Simões S. Targeted delivery in scleroderma fibrosis. Autoimmun Rev 2020; 20:102730. [PMID: 33338593 DOI: 10.1016/j.autrev.2020.102730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 10/02/2020] [Indexed: 12/29/2022]
Abstract
Systemic sclerosis (SSc) is considered one of the most challenging and difficult to treat among rheumatic disorders, due to its severity, multiorgan manifestation and different outcomes. It manifests fibrosis in different organs, mostly in skin and lungs. The skin fibrosis expression is considered the first sign of the disease and usually it is followed by internal organ fibrosis. An aberrant immune system activation seems to relate to the expression of the disease, but even environmental influences and dysregulation of many molecules signalling pathways are involved in the development of the disease. Current therapies are limited and characterized by multiple side effects: systemic route is the elective administration route, which decreases patient adherence to the therapy, as they are often already bothered by pain and disfigurement. Treatments available are organ-based, originally indicated for other conditions and there is no therapy available to reduce the fibroblast population size within existing fibrotic lesions. Disease-modifying therapies or immunomodulatory agents that are highly effective in other rheumatic diseases have shown disappointing results in SSc. There are thus no standardized and effective treatments for this disease, and there are even unanswered questions related to the insurgence of the pathology and all the mechanisms involved. An ideal approach could be considered "targeted therapy" that will be an increasingly attainable objective insofar as our understanding of the disease improves. The advantages in identifying the molecule and the signalling pathways involved in the pathology have helped to find some novel compounds for the therapy of scleroderma fibrosis or following innovative uses for already-approved drugs, corroborated by many clinical studies.
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Affiliation(s)
- Carla Varrica
- University of Pavia, Corso Strada Nuova, 65, 27100 Pavia, Italy
| | - Helena Sofia Dias
- Faculty of Pharmacy, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisboa, Portugal
| | - Catarina Reis
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisboa, Portugal; IBEB, Biophysics and Biomedical Engineering, Faculty of Sciences, Universidade de Lisboa, Campo Grande, 1649-016 Lisboa, Portugal
| | - Manuela Carvalheiro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisboa, Portugal
| | - Sandra Simões
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisboa, Portugal.
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Lee D, Park YH, Lee JE, Kim HS, Min KY, Jo MG, Kim HS, Choi WS, Kim YM. Dasatinib Inhibits Lyn and Fyn Src-Family Kinases in Mast Cells to Suppress Type I Hypersensitivity in Mice. Biomol Ther (Seoul) 2020; 28:456-464. [PMID: 32268657 PMCID: PMC7457176 DOI: 10.4062/biomolther.2020.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 12/21/2022] Open
Abstract
Mast cells (MCs) are systemically distributed and secrete several allergic mediators such as histamine and leukotrienes to cause type I hypersensitivity. Dasatinib is a type of anti-cancer agent and it has also been reported to inhibit human basophils. However, dasatinib has not been reported for its inhibitory effects on MCs or type I hypersensitivity in mice. In this study, we examined the inhibitory effect of dasatinib on MCs and MC-mediated allergic response in vitro and in vivo. in vitro, dasatinib inhibited the degranulation of MCs by antigen stimulation in a dose-dependent manner (IC50, ~34 nM for RBL-2H3 cells; ~52 nM for BMMCs) without any cytotoxicity. It also suppressed the secretion of inflammatory cytokines IL-4 and TNF-α by antigen stimulation. Furthermore, dasatinib inhibited MC-mediated passive cutaneous anaphylaxis (PCA) in mice (ED50, ~29 mg/kg). Notably, dasatinib significantly suppressed the degranulation of MCs in the ear tissue. As the mechanism of its effect, dasatinib inhibited the activation of Syk and Syk-mediated downstream signaling proteins, LAT, PLCγ1, and three typical MAP kinases (Erk1/2, JNK, and p38), which are essential for the activation of MCs. Interestingly, in vitro tyrosine kinase assay, dasatinib directly inhibited the activities of Lyn and Fyn, the upstream tyrosine kinases of Syk in MCs. Taken together, dasatinib suppresses MCs and PCA in vitro and in vivo through the inhibition of Lyn and Fyn Src-family kinases. Therefore, we suggest the possibility of repositioning the anti-cancer drug dasatinib as a treatment for various MC-mediated type I hypersensitive diseases.
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Affiliation(s)
- Dajeong Lee
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Young Hwan Park
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Ji Eon Lee
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea.,College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Hyuk Soon Kim
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Keun Young Min
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Min Geun Jo
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Hyung Sik Kim
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon 6419, Republic of Korea
| | - Wahn Soo Choi
- Department of Immunology, College of Medicine, Konkuk University, Chungju 27478, Republic of Korea
| | - Young Mi Kim
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
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Ng AY, Tu C, Shen S, Xu D, Oursler MJ, Qu J, Yang S. Comparative Characterization of Osteoclasts Derived From Murine Bone Marrow Macrophages and RAW 264.7 Cells Using Quantitative Proteomics. JBMR Plus 2018; 2:328-340. [PMID: 30460336 PMCID: PMC6237207 DOI: 10.1002/jbm4.10058] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/26/2018] [Accepted: 05/07/2018] [Indexed: 12/29/2022] Open
Abstract
Osteoclasts are bone-resorbing cells differentiated from macrophage/monocyte precursors in response to macrophage colony-stimulating factor (M-CSF) and receptor activator of NF-κB ligand (RANKL). In vitro models are principally based on primary bone marrow macrophages (BMMs), but RAW 264.7 cells are frequently used because they are widely available, easy to culture, and more amenable to genetic manipulation than primary cells. Increasing evidence, however, has shown that the vastly different origins of these two cell types may have important effects on cell behavior. In particular, M-CSF is a prerequisite for the differentiation of BMMs, by promoting survival and proliferation and priming the cells for RANKL induction. RAW 264.7 cells readily form osteoclasts in the presence of RANKL, but M-CSF is not required. Based on these key differences, we sought to understand their functional implications and how it might affect osteoclast differentiation and related signaling pathways. Using a robust and high-throughput proteomics strategy, we quantified the global protein changes in osteoclasts derived from BMMs and RAW 264.7 cells at 1, 3, and 5 days of differentiation. Data are available via ProteomeXchange with the identifier PXD009610. Correlation analysis of the proteomes demonstrated low concordance between the two cell types (R2 ≈ 0.13). Bioinformatics analysis indicate that RANKL-dependent signaling was intact in RAW 264.7 cells, but biological processes known to be dependent on M-CSF were significantly different, including cell cycle control, cytoskeletal organization, and apoptosis. RAW 264.7 cells exhibited constitutive activation of Erk and Akt that was dependent on the activity of Abelson tyrosine kinase, and the timing of Erk and Akt activation was significantly different between BMMs and RAW 264.7 cells. Our findings provide the first evidence for major discrepancies between BMMs and RAW 264.7 cells, indicating that careful consideration is needed when using the RAW 264.7 cell line for studying M-CSF-dependent signaling and functions. © 2018 American Society for Bone and Mineral Research. © 2018 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Andrew Yh Ng
- Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA USA.,Department of Oral Biology School of Dental Medicine University at Buffalo Buffalo NY USA.,New York State Center of Excellence in Bioinformatics and Life Sciences Buffalo NY USA
| | - Chengjian Tu
- New York State Center of Excellence in Bioinformatics and Life Sciences Buffalo NY USA.,Department of Pharmaceutical Sciences School of Pharmacy and Pharmaceutical Sciences University at Buffalo NY USA
| | - Shichen Shen
- New York State Center of Excellence in Bioinformatics and Life Sciences Buffalo NY USA.,Department of Pharmaceutical Sciences School of Pharmacy and Pharmaceutical Sciences University at Buffalo NY USA
| | - Ding Xu
- Department of Oral Biology School of Dental Medicine University at Buffalo Buffalo NY USA
| | - Merry J Oursler
- Division of Endocrinology Metabolism, Nutrition, and Diabetes Mayo Clinic Rochester MN USA
| | - Jun Qu
- New York State Center of Excellence in Bioinformatics and Life Sciences Buffalo NY USA.,Department of Pharmaceutical Sciences School of Pharmacy and Pharmaceutical Sciences University at Buffalo NY USA
| | - Shuying Yang
- Department of Anatomy and Cell Biology School of Dental Medicine University of Pennsylvania Philadelphia PA USA
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Wu B, Liu M, Li T, Lin H, Zhong H. An economic analysis of high-dose imatinib, dasatinib, and nilotinib for imatinib-resistant chronic phase chronic myeloid leukemia in China: A CHEERS-compliant article. Medicine (Baltimore) 2017; 96:e7445. [PMID: 28723754 PMCID: PMC5521894 DOI: 10.1097/md.0000000000007445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The aim of the study was to test the cost-effectiveness of dasatinib compared to high-dose imatinib and nilotinib in Chinese patients who were diagnosed with imatinib-resistant chronic myeloid leukemia in the chronic phase (CML-CP). METHODS A Markov model combined with clinical effectiveness, utility, and cost data was used. The sensitivity analyses were conducted to determine the robustness of the model outcomes. The impact of patient assistance programs (PAPs) was assessed. RESULTS Treatment with dasatinib is expected to produce 3.65, 0.59, and 0.15 more quality-adjusted life years (QALYs) in comparison with high-dose imatinib (600 and 800 mg) and nilotinib, respectively. When a PAP was available, dasatinib yielded an incremental cost of $16,417 per QALY compared to imatinib (600 mg) and was cost-saving compared to imatinib (800 mg) and nilotinib. CONCLUSION When PAP is available in the Chinese setting, dasatinib is likely to be a cost-effective strategy for patients with CML-CP standard-dose imatinib resistance. The results should be carefully explained due to the assumptions and limitations used in the study.
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Affiliation(s)
- Bin Wu
- Medical Decision and Economic Group, Department of Pharmacy, Ren Ji Hospital, South Campus, School of Medicine, Shanghai Jiaotong University, Shanghai
| | - Maobai Liu
- Department of Pharmacy, Fujian Union Hospital, Affiliated with Fujian Medical University, Fujian
| | - Te Li
- Department of Pharmacy, Yuxi People's Hospital, Affiliated with the Kunming Medical College, Yuxi
| | - Houwen Lin
- Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University
| | - Hua Zhong
- Department of Hematology, Ren Ji Hospital, South Campus, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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O'Sullivan S, Grey A. Adverse skeletal effects of drugs - beyond Glucocorticoids. Clin Endocrinol (Oxf) 2015; 82:12-22. [PMID: 25039381 DOI: 10.1111/cen.12549] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 06/28/2014] [Accepted: 07/07/2014] [Indexed: 12/13/2022]
Abstract
Osteoporotic fractures are an important public health problem with significant individual and societal costs. In addition to the major risk factors for osteoporotic fracture, low bone mineral density (BMD), age, low body weight and history of fracture or falls, some drugs are now considered to be important secondary risk factor for bone loss and fracture, particularly amongst predisposed individuals. Currently available data are often generated from small observational clinical studies, making risk assessment and development of management guidelines difficult. In many cases, the exposed population has a low baseline risk for fracture and additional assessment and treatment may not be necessary. In this review, we focus on drugs other than glucocorticoids identified as potentially causing adverse skeletal effects, summarizing the existing evidence from preclinical and clinical studies, and suggest recommendations for patient management.
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Ergene U, Ozbalci D. Successful management of imatinib despite alopecia and nail necrosis. Transfus Apher Sci 2013; 48:271-2. [PMID: 23419836 DOI: 10.1016/j.transci.2013.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 10/20/2012] [Accepted: 01/10/2013] [Indexed: 11/25/2022]
Abstract
Imatinib mesylate selectively inhibits bcr/abl and other non-specific tyrosine kinases, such as c-kit and platelet derived growth factor (PDGF) receptor and successfully used to treat chronic myeloid leukaemia (CML). In most cases, the drug is well tolerated: however, side effects can be seen. Hair loss and paronychia inflammation were often reported with Imatinib, but total alopecia was rarely mentioned. We report a CML patient who was presented with alopecia and paronychia inflammation probably induced by imatinib therapy. We have successfully treated our patient by cessation and then re-applying therapy with lower doses after improvement of lesions and have not found a similar report in literature.
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Affiliation(s)
- Ulku Ergene
- Celal Bayar University, Medical Faculty, Department of Hematology, Turkey
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Tyrosine kinase signaling in fibrotic disorders: Translation of basic research to human disease. Biochim Biophys Acta Mol Basis Dis 2012; 1832:897-904. [PMID: 22728287 DOI: 10.1016/j.bbadis.2012.06.008] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 06/03/2012] [Accepted: 06/05/2012] [Indexed: 12/13/2022]
Abstract
Tyrosine kinases regulate a broad variety of physiological cell processes, including metabolism, growth, differentiation and apoptosis. Abnormal tyrosine kinase activity disturbs the physiological cell homeostasis and can lead to cancer, vascular disease, and fibrosis. In regard to fibrosis, different tyrosine kinases have been identified as determinants of disease progression and potential targets for anti-fibrotic therapies. This includes both receptor tyrosine kinases (e.g., PDGF receptor, VEGF receptor, EGF receptor, and JAK kinases) as well as non-receptor tyrosine kinases (e.g., c-Abl, c-Kit, and Src kinases). Given their central role in the pathogenesis of fibrosis, researchers of our field study the anti-fibrotic effects of monoclonal antibodies or small-molecule inhibitors to block the aberrant tyrosine kinase activity and treat fibrosis in preclinical models of various fibrotic diseases (e.g., idiopathic pulmonary fibrosis, renal fibrosis, liver fibrosis, and dermal fibrosis). The results of these studies were promising and prompted clinical trials with different compounds in fibrotic diseases. So far, results from studies with intedanib in idiopathic pulmonary fibrosis and imatinib in idiopathic pulmonary fibrosis and systemic sclerosis have been reported. Although none of these studies reported a positive primary outcome, promising trends in anti-fibrotic efficacy awaken our hopes for a new class of effective anti-fibrotic targeted therapies. This article is part of a Special Issue entitled: Fibrosis: Translation of basic research to human disease.
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Abstract
Although direct neoplastic involvement of muscle tis-sue is surprisingly rare, considering the large amount of body mass that is represented by muscle tissue, the most important and unresolved muscle effect is muscle cachexia.Other associations, such as inflammatory, paraneo-plastic, toxic, and several extremely rare associations,have been described. Drug-induced toxicity and radiation recall syndrome need to be taken into consideration when muscle symptoms appear in patients with cancer.
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Abstract
PURPOSE OF REVIEW This article reviews the current evidence and rationale for the use of tyrosine kinase inhibitors as potential therapeutic interventions for systemic sclerosis. RECENT FINDINGS The signaling cascades of the profibrotic cytokines transforming growth factor-β and platelet-derived growth factor utilize tyrosine kinases. Preclinical studies have suggested potential efficacy of tyrosine kinase inhibitors in fibrosing disorders. Imatinib, dasatinib, and nilotinib treatment of scleroderma and normal fibroblasts leads to decreased production of extracellular matrix proteins in an in-vitro model. Several murine models demonstrate decreased skin thickening with tyrosine kinase inhibition. Case reports and one open-label trial suggest potential efficacy of imatinib in diffuse systemic sclerosis, although adverse events are common. One controlled and several uncontrolled trials are ongoing, and their results will better define the role of tyrosine kinase inhibition in the treatment of this disorder. SUMMARY Tyrosine kinase inhibition as a potential strategy for the treatment of systemic sclerosis has been gaining more widespread interest based on preclinical data and open-label experiences. Large, multicenter, double-blind, randomized controlled trials are needed to assess the efficacy and safety of this approach in this complex disease.
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Schwartz LB, Sheikh J, Singh A. Current strategies in the management of hypereosinophilic syndrome, including mepolizumab. Curr Med Res Opin 2010; 26:1933-46. [PMID: 20565230 DOI: 10.1185/03007995.2010.493132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Patients with hypereosinophilic syndrome (HES) vary considerably in their clinical presentation with regard to the severity and pattern of end-organ involvement. Clinical manifestations range from nonspecific symptoms to life-threatening, multisystem damage caused by eosinophil infiltration and local release of proinflammatory mediators and toxic granule products from these invading cells. The primary objective of treatment is to reduce blood and tissue eosinophilia and prevent eosinophil-mediated tissue damage as safely as possible. Systemic corticosteroids, such as prednisone, are first-line therapy for the management of patients with symptomatic HES who lack the Fip1-like 1-platelet-derived growth factor receptor-alpha (FIP1L1-PDGFRA) gene fusion mutation. The tyrosine kinase inhibitor, imatinib, is first-line treatment for FIP1L1-PDGFRA-positive patients). Because of the toxicity and serious side-effects that can occur with oral corticosteroids, alternative therapies may need to be introduced to reduce the cumulative corticosteroid exposure while maintaining disease control. SCOPE Among corticosteroid-sparing agents are cytotoxic drugs and interferon-alpha; anti-interleukin-5 (IL-5) monoclonal antibodies are also currently under investigation for the treatment of HES. This manuscript reviews the available treatments for HES and the range of side-effects associated with long-term corticosteroid use, and then focuses on the anti-IL-5 monoclonal antibodies, mepolizumab and reslizumab. Of these, only mepolizumab has been studied in a randomized, placebo-controlled trial. Literature search methodology utilized www.pubmed.gov and www.clinicaltrials.gov with search terms including hypereosinophilic syndrome and corticosteroid side-effects coupled with search terms including eosinophils, mepolizumab and reslizumab through March 2010. FINDINGS Three case studies are presented that demonstrate the limitations of corticosteroid therapy in terms of tolerability and quality of life, and the subsequent use of mepolizumab as a corticosteroid-sparing agent in these individuals. CONCLUSION Targeted eosinophil-directed therapy with an anti-IL-5 neutralizing monoclonal antibody reduced the need for corticosteroids in these three HES patients without disease exacerbations.
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Affiliation(s)
- Lawrence B Schwartz
- Division of Rheumatology, Allergy & Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA.
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11
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Imatinib use during pregnancy and breast feeding: a case report and review of the literature. Arch Gynecol Obstet 2008; 280:169-75. [DOI: 10.1007/s00404-008-0861-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Accepted: 11/18/2008] [Indexed: 11/26/2022]
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12
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Distler JHW, Distler O. Imatinib as a novel therapeutic approach for fibrotic disorders. Rheumatology (Oxford) 2008; 48:2-4. [PMID: 19029132 DOI: 10.1093/rheumatology/ken431] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Valent P. Emerging stem cell concepts for imatinib-resistant chronic myeloid leukaemia: implications for the biology, management, and therapy of the disease. Br J Haematol 2008; 142:361-78. [PMID: 18540942 DOI: 10.1111/j.1365-2141.2008.07197.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chronic myeloid leukaemia (CML) is a myeloid neoplasm defined by the BCR/ABL oncoprotein that is considered essential for leukaemogenesis and accumulation of neoplastic cells. The BCR/ABL kinase inhibitor imatinib is an effective agent in most patients and can now be regarded as front-line therapy. Hence, intrinsic and acquired resistance to imatinib has been described and is an emerging challenge in clinical practice. While CML stem cells display primary resistance, stem cell subclones may, in addition, acquire imatinib-resistant mutants of BCR/ABL. Other factors that are considered to contribute to stem cell resistance include the genetic background, clonal evolution, additional biological features of subclones, gene amplifications, silencing of tumour suppressor genes and specific pharmacological aspects. In this article, mechanisms of resistance of CML (stem) cells against imatinib and other BCR/ABL inhibitors are discussed, together with strategies to overcome and/or to prevent resistance with available drugs or novel anti-leukaemic approaches.
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Affiliation(s)
- Peter Valent
- Division of Haematology and Haemostaseology, Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria.
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14
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Akhmetshina A, Dees C, Pileckyte M, Maurer B, Axmann R, Jüngel A, Zwerina J, Gay S, Schett G, Distler O, Distler JHW. Dual inhibition of c‐abl and PDGF receptor signaling by dasatinib and nilotinib for the treatment of dermal fibrosis. FASEB J 2008; 22:2214-22. [DOI: 10.1096/fj.07-105627] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alfiya Akhmetshina
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
| | - Clara Dees
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
| | | | - Britta Maurer
- Center of Experimental Rheumatology and Zurich Center of Integrative Human PhysiologyUniversity Hospital of ZurichZurichSwitzerland
| | - Roland Axmann
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
| | - Astrid Jüngel
- Center of Experimental Rheumatology and Zurich Center of Integrative Human PhysiologyUniversity Hospital of ZurichZurichSwitzerland
| | - Jochen Zwerina
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
| | - Steffen Gay
- Center of Experimental Rheumatology and Zurich Center of Integrative Human PhysiologyUniversity Hospital of ZurichZurichSwitzerland
| | - Georg Schett
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
| | - Oliver Distler
- Center of Experimental Rheumatology and Zurich Center of Integrative Human PhysiologyUniversity Hospital of ZurichZurichSwitzerland
| | - Jörg H. W. Distler
- Department of Internal Medicine 3 and Institute for Clinical ImmunologyUniversity of Erlangen-NurembergErlangenGermany
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Tefferi A, Kantarjian H. Long-term experience with imatinib therapy in chronic phase chronic myelogenous leukemia--remarkable activity with room for improvement. Am J Hematol 2008; 83:175-7. [PMID: 18181199 DOI: 10.1002/ajh.21136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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The effects of dasatinib on IgE receptor-dependent activation and histamine release in human basophils. Blood 2008; 111:3097-107. [PMID: 18180381 DOI: 10.1182/blood-2007-08-104372] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Dasatinib is a multitargeted drug that blocks several tyrosine kinases. Apart from its well-known antileukemic activity, the drug has attracted attention because of potential immunosuppressive and anti-inflammatory effects. We report that dasatinib at 1 microM completely blocks anti-IgE-induced histamine release in blood basophils in healthy donors, and allergen-induced release of histamine in sensitized individuals. In addition, dasatinib inhibited FcepsilonRI-mediated release of IL-4 and IgE-mediated up-regulation of CD13, CD63, CD164, and CD203c in basophils. The effects of dasatinib were dose-dependent (IC(50): 50-500 nM) and specific for FcepsilonRI activation in that the drug failed to inhibit C5a-induced or Ca-ionophore-induced histamine release. Interestingly, at lower concentrations, dasatinib even promoted FcepsilonRI-dependent histamine release in basophils in allergic subjects. In consecutive studies, dasatinib was found to interact with and block several FcepsilonRI downstream targets in basophils, including Btk. Correspondingly, FcepsilonRI-mediated histamine secretion in basophils was markedly reduced in Btk knockout mice and in a patient with Btk deficiency. However, the remaining "low-level" mediator secretion in Btk-deficient cells was fully blocked down again by 1 muM dasatinib. Together, these data suggest that dasatinib inhibits FcepsilonRI-mediated activation of basophils through multiple signaling molecules including Btk. Dasatinib may be an interesting agent for immunologic disorders involving Btk-dependent responses or/and FcepsilonRI activation of basophils.
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Current Awareness in Hematological Oncology. Hematol Oncol 2007. [DOI: 10.1002/hon.798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Current awareness: Pharmacoepidemiology and drug safety. Pharmacoepidemiol Drug Saf 2007. [DOI: 10.1002/pds.1377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Thomas DA. Philadelphia chromosome positive acute lymphocytic leukemia: a new era of challenges. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2007; 2007:435-443. [PMID: 18024662 DOI: 10.1182/asheducation-2007.1.435] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Significant advances in the treatment of Philadelephia chromosome (Ph)- or BCR-ABL-positive acute lymphocytic leukemia (ALL) have been made since the discovery of the selective ABL tyrosine kinase inhibitors (TKIs). Whereas the outcome with standard chemotherapy was previously dismal, incorporation of imatinib mesylate into frontline therapy has improved relapse-free and overall survival. The benefit of imatinib extends particularly to instances where allogeneic stem cell transplantation in first complete remission is prohibited by older age, comorbidities, or lack of a suitable donor. However, the emergence of resistance to imatinib presents new therapeutic challenges. The development of novel TKIs with enhanced inhibitory potency against ABL and other kinases may further improve on the results observed with imatinib. Optimal use of these novel agents in the treatment schema of Ph(+) ALL will be paramount in ensuring continued success in the eradication of this disease. Herein, the new approaches to the management of Ph(+) ALL are reviewed.
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Affiliation(s)
- Deborah A Thomas
- Anderson Cancer Ctr., 1515 Holcombe Blvd., Unit 428, Houston, TX 77030-1402, USA.
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