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Ferro A, Pantazaka E, Athanassopoulos CM, Cuendet M. Histone deacetylase-based dual targeted inhibition in multiple myeloma. Med Res Rev 2023; 43:2177-2236. [PMID: 37191917 DOI: 10.1002/med.21972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 04/08/2023] [Accepted: 04/30/2023] [Indexed: 05/17/2023]
Abstract
Despite enormous advances in terms of therapeutic strategies, multiple myeloma (MM) still remains an incurable disease with MM patients often becoming resistant to standard treatments. To date, multiple combined and targeted therapies have proven to be more beneficial compared to monotherapy approaches, leading to a decrease in drug resistance and an improvement in median overall survival in patients. Moreover, recent breakthroughs highlighted the relevant role of histone deacetylases (HDACs) in cancer treatment, including MM. Thus, the simultaneous use of HDAC inhibitors with other conventional regimens, such as proteasome inhibitors, is of interest in the field. In this review, we provide a general overview of HDAC-based combination treatments in MM, through a critical presentation of publications from the past few decades related to in vitro and in vivo studies, as well as clinical trials. Furthermore, we discuss the recent introduction of dual-inhibitor entities that could have the same beneficial effects as drug combinations with the advantage of having two or more pharmacophores in one molecular structure. These findings could represent a starting-point for both reducing therapeutic doses and lowering the risk of developing drug resistance.
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Affiliation(s)
- Angelica Ferro
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Evangelia Pantazaka
- Synthetic Organic Chemistry Laboratory, Department of Chemistry, University of Patras, Patras, Greece
- Laboratory of Biochemistry/Metastatic Signaling, Section of Genetics, Cell Biology, and Development, Department of Biology, University of Patras, Patras, Greece
| | | | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
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2
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Entinostat-Bortezomib Hybrids against Multiple Myeloma. Molecules 2023; 28:molecules28031456. [PMID: 36771118 PMCID: PMC9920246 DOI: 10.3390/molecules28031456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/16/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
Although proteasome inhibitors have emerged as the therapeutic backbone of multiple myeloma treatment, patients often relapse and become drug refractory. The combination between proteasome and histone deacetylase inhibitors has shown to be more efficient compared to monotherapy by enhancing the anti-myeloma activity and improving the patient's lifetime expectancy. Hybrid molecules, combining two drugs/pharmacophores in a single molecular entity, offer improved effectiveness by modulating more than one target and circumventing differences in the pharmacokinetic and pharmacodynamic profiles, which are the main disadvantages of combination therapy. Therefore, eleven histone deacetylase-proteasome inhibitor hybrids were synthesized, combining pharmacophores of entinostat and bortezomib. Compound 3 displayed the strongest antiproliferative activity with an IC50 value of 9.5 nM in the multiple myeloma cells RPMI 8226, 157.7 nM in the same cell line resistant to bortezomib, and 13.1 nM in a 3D spheroid model containing multiple myeloma and mesenchymal stem cells. Moreover, the compound inhibited 33% of histone deacetylase activity when RPMI 8226 cells were treated for 8 h at 10 µM. It also inhibited the proteasome activity with an IC50 value of 23.6 nM.
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3
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Newly Synthesized Melphalan Analogs Induce DNA Damage and Mitotic Catastrophe in Hematological Malignant Cancer Cells. Int J Mol Sci 2022; 23:ijms232214258. [PMID: 36430734 PMCID: PMC9693175 DOI: 10.3390/ijms232214258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Myeloablative therapy with highdoses of the cytostatic drug melphalan (MEL) in preparation for hematopoietic cell transplantation is the standard of care for multiple myeloma (MM) patients. Melphalan is a bifunctional alkylating agent that covalently binds to nucleophilic sites in the DNA and effective in the treatment, but unfortunately has limited therapeutic benefit. Therefore, new approaches are urgently needed for patients who are resistant to existing standard treatment with MEL. Regulating the pharmacological activity of drug molecules by modifying their structure is one method for improving their effectiveness. The purpose of this work was to analyze the physicochemical and biological properties of newly synthesized melphalan derivatives (EE-MEL, EM-MEL, EM-MOR-MEL, EM-I-MEL, EM-T-MEL) obtained through the esterification of the carboxyl group and the replacement of the the amino group with an amidine group. Compounds were selected based on our previous studies for their improved anticancer properties in comparison with the original drug. For this, we first evaluated the physicochemical properties using the circular dichroism technique, then analyzed the zeta potential and the hydrodynamic diameters of the particles. Then, the in vitro biological properties of the analogs were tested on multiple myeloma (RPMI8226), acute monocytic leukemia (THP1), and promyelocytic leukemia (HL60) cells as model systems for hematological malignant cells. DNA damage was assessed by immunostaining γH2AX, cell cycle distribution changes by propidium iodide (PI) staining, and cell death by the activation of caspase 2. We proved that the newly synthesized derivatives, in particular EM-MOR-MEL and EM-T-MEL, affected the B-DNA conformation, thus increasing the DNA damage. As a result of the DNA changes, the cell cycle was arrested in the S and G2/M phases. The cell death occurred by activating a mitotic catastrophe. Our investigations suggest that the analogs EM-MOR-MEL and EM-T-MEL have better anti-cancer activity in multiple myeloma cells than the currently used melphalan.
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Poczta A, Krzeczyński P, Tobiasz J, Rogalska A, Gajek A, Marczak A. Synthesis and In Vitro Activity of Novel Melphalan Analogs in Hematological Malignancy Cells. Int J Mol Sci 2022; 23:ijms23031760. [PMID: 35163680 PMCID: PMC8836188 DOI: 10.3390/ijms23031760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/24/2022] [Accepted: 02/01/2022] [Indexed: 11/16/2022] Open
Abstract
Despite the continuous developments in pharmacology and the high therapeutic effect of new treatment options for patients with hematological malignancies, these diseases remain a major health issue. Our study aimed to synthesize, analyze in silico, and determine the biological properties of new melphalan derivatives. We obtained three methyl esters of melphalan having in their structures amidine moieties substituted with thiomorpholine (EM-T-MEL), indoline (EM-I-MEL), or 4-(4-morpholinyl) piperidine (EM-MORPIP-MEL). These have not yet been described in the literature. The in vitro anticancer properties of the analogs were determined against THP1, HL60, and RPMI8226 cells. Melphalan derivatives were evaluated for cytotoxicity (resazurin viability assay), genotoxicity (alkaline comet assay), and their ability to induce apoptosis (Hoechst33342/propidium iodide double staining method; phosphatidylserine translocation; and caspase 3/7, 8, and 9 activity measurements). Changes in mitochondrial membrane potential were examined using the specific fluorescence probe JC-1 (5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazol carbocyanine). The EM-T-MEL derivative had the highest biological activity, showing higher cytotoxic and genotoxic properties than the parent drug. Moreover, it showed a high ability to induce apoptosis in the tested cancer cells. This compound also had a beneficial effect in peripheral blood mononuclear cells (PBMC). In conclusion, we verified and confirmed the hypothesis that chemical modifications of the melphalan structure improved its anticancer properties. The conducted study allowed the selection of the compound with the highest biological activity and provided a basis for chemical structure-biological activity analyses.
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Affiliation(s)
- Anastazja Poczta
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (A.R.); (A.G.); (A.M.)
- Correspondence:
| | - Piotr Krzeczyński
- Department of Pharmacy, Cosmetic Chemistry and Biotechnology, Team of Chemistry, Łukasiewicz Research Network—Industrial Chemistry Institute, 8 Rydygiera Street, 01-793 Warsaw, Poland; (P.K.); (J.T.)
| | - Joanna Tobiasz
- Department of Pharmacy, Cosmetic Chemistry and Biotechnology, Team of Chemistry, Łukasiewicz Research Network—Industrial Chemistry Institute, 8 Rydygiera Street, 01-793 Warsaw, Poland; (P.K.); (J.T.)
| | - Aneta Rogalska
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (A.R.); (A.G.); (A.M.)
| | - Arkadiusz Gajek
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (A.R.); (A.G.); (A.M.)
| | - Agnieszka Marczak
- Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (A.R.); (A.G.); (A.M.)
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5
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Lin T, Ren Q, Zuo W, Jia R, Xie L, Lin R, Zhao H, Chen J, Lei Y, Wang P, Dong H, Huang L, Cai J, Peng Y, Yu Z, Tan J, Wang S. Valproic acid exhibits anti-tumor activity selectively against EGFR/ErbB2/ErbB3-coexpressing pancreatic cancer via induction of ErbB family members-targeting microRNAs. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:150. [PMID: 30961642 PMCID: PMC6454766 DOI: 10.1186/s13046-019-1160-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/31/2019] [Indexed: 12/15/2022]
Abstract
Background Deregulated ErbB signaling plays an important role in tumorigenesis of pancreatic cancer. However, patients with pancreatic cancer benefit little from current existed therapies targeting the ErbB signaling. Here, we explore the potential anti-tumor activity of Valproic acid against pancreatic cancer via targeting ErbB family members. Methods Cell viability assay and apoptosis evaluation were carried out to determine the efficacy of VPA on pancreatic cancer cells. Western blot analyses were performed to determine the expression and activation of proteins. Apoptosis enzyme-linked immunosorbent assay was used to quantify cytoplasmic histone associated DNA fragments. Lentiviral expression system was used to introduce overexpression of exogeneous genes or gene-targeting short hairpin RNAs (shRNAs). qRT-PCR was carried out to analyze the mRNAs and miRNAs expression levels. Tumor xenograft model was established to evaluate the in vivo anti-pancreatic cancer activity of VPA. Results VPA preferentially inhibited cell proliferation/survival of, and induced apoptosis in EGFR/ErbB2/ErbB3-coexpressing pancreatic cancer cells within its clinically achievable range [40~100 mg/L (0.24~0.6 mmol/L)]. Mechanistic investigations revealed that VPA treatment resulted in simultaneous significant down-regulation of EGFR, ErbB2, and ErbB3 in pancreatic cancer cells likely via induction of ErbB family members-targeting microRNAs. Moreover, the anti-pancreatic cancer activity of VPA was further validated in tumor xenograft model. Conclusions Our data strongly suggest that VPA may be added to the treatment regimens for pancreatic cancer patients with co-overexpression of the ErbB family members. Electronic supplementary material The online version of this article (10.1186/s13046-019-1160-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tingting Lin
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China.,Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China.,Department of Medical Oncology, First Hospital of Sanming, Sanming, 365000, Fujian Province, China
| | - Qun Ren
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China.,Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Weimin Zuo
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China.,Department of Medical Ultrasound, Guangzhou First Peoples's Hospital, Guangzhou Medical University, Guangdong Province, Guangzhou, 510180, China
| | - Ruxue Jia
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Linhui Xie
- Department of Clinical Medicine, Fujian Health Vocational and Technical College, Fuzhou, 350101, Fujian Province, China
| | - Rong Lin
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Hu Zhao
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China.,Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Jin Chen
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Yan Lei
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Ping Wang
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Huiyue Dong
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Lianghu Huang
- Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Jinquan Cai
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China
| | - Yonghai Peng
- Department of Medical Oncology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou, 350025, Fujian Province, China
| | - Zongyang Yu
- Department of Medical Oncology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou, 350025, Fujian Province, China
| | - Jianming Tan
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China.,Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China
| | - Shuiliang Wang
- Department of Urology, The 900th Hospital of the Joint Logistics Team (the Former Fuzhou General Hospital), Fujian Medical University, Fuzhou 350025, China. 156 Xi'er Huan Bei Road, Fuzhou, 350025, Fujian Province, China. .,Fujian Key Laboratory of Transplant Biology, Affiliated Dongfang Hospital, Xiamen University School of Medicine, Fuzhou, 350025, Fujian Province, China.
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Wang B, Lyu H, Pei S, Song D, Ni J, Liu B. Cladribine in combination with entinostat synergistically elicits anti-proliferative/anti-survival effects on multiple myeloma cells. Cell Cycle 2018; 17:985-996. [PMID: 29969371 PMCID: PMC6197031 DOI: 10.1080/15384101.2018.1464849] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/08/2018] [Indexed: 12/28/2022] Open
Abstract
Cladribine (2CdA), a synthetic purine analog interfering with DNA synthesis, is a medication used to treat hairy cell leukemia (HCL) and B-cell chronic lymphocytic leukemia. Entinostat, a selective class I histone deacetylase (HDAC) inhibitor, shows antitumor activity in various human cancers, including hematological malignancies. The therapeutic potential of cladribine and entinostat against multiple myeloma (MM) remains unclear. Here we investigate the combinatorial effects of cladribine and entinostat within the range of their clinical achievable concentrations on MM cells. While either agent alone inhibited MM cell proliferation in a dose-dependent manner, their combinations synergistically induced anti-proliferative/anti-survival effects on all MM cell lines (RPMI8226, U266, and MM1.R) tested. Further studies showed that the combinations of cladribine and entinostat as compared to either agent alone more potently induced mitotic catastrophe in the MM cells, and resulted in a marked increase of the cells at G1 phase associated with decrease of Cyclin D1 and E2F-1 expression and upregulation of p21waf-1. Apoptotic ELISA and western blot analyses revealed that the combinations of cladribine and entinostat exerted a much more profound activity to induce apoptosis and DNA damage response, evidenced by enhanced phosphorylation of histone H2A.X and the DNA repair enzymes Chk1 and Chk2. Collectively, our data demonstrate that the combinations of cladribine and entinostat exhibit potent activity to induce anti-proliferative/anti-survival effects on MM cells via induction of cell cycle G1 arrest, apoptosis, and DNA damage response. Regimens consisting of cladribine and/or entinostat may offer a new treatment option for patients with MM. ABBREVIATIONS MM, multiple myeloma; HCL, hairy cell leukemia; HDAC, histone deacetylase; Ab, antibody; mAb, monoclonal Ab; FBS, fetal bovine serum; CI, combination index; PAGE, polyacrylamide gel electrophoresis; ELISA, enzyme-linked immunosorbent assay; PARP, poly(ADP-ribose) polymerase; MTS, 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium,inner salt.
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Affiliation(s)
- Bolun Wang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Hui Lyu
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Shanshan Pei
- Department of Hematology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Deye Song
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jiangdong Ni
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bolin Liu
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Huang XP, Li X, Situ MY, Huang LY, Wang JY, He TC, Yan QH, Xie XY, Zhang YJ, Gao YH, Li YH, Rong TH, Wang MR, Cai QQ, Fu JH. Entinostat reverses cisplatin resistance in esophageal squamous cell carcinoma via down-regulation of multidrug resistance gene 1. Cancer Lett 2018; 414:294-300. [DOI: 10.1016/j.canlet.2017.10.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 10/18/2022]
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8
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Wang S, Zhu L, Zuo W, Zeng Z, Huang L, Lin F, Lin R, Wang J, Lu J, Wang Q, Lin L, Dong H, Wu W, Zheng K, Cai J, Yang S, Ma Y, Ye S, Liu W, Yu Y, Tan J, Liu B. MicroRNA-mediated epigenetic targeting of Survivin significantly enhances the antitumor activity of paclitaxel against non-small cell lung cancer. Oncotarget 2018; 7:37693-37713. [PMID: 27177222 PMCID: PMC5122342 DOI: 10.18632/oncotarget.9264] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/26/2016] [Indexed: 12/25/2022] Open
Abstract
Elevated expression of Survivin correlates with poor prognosis, tumor recurrence, and drug resistance in various human cancers, including non-small cell lung cancer (NSCLC). The underlying mechanism of Survivin upregulation in cancer cells remains elusive. To date, no Survivin-targeted therapy has been approved for cancer treatment. Here, we explored the molecular basis resulting in Survivin overexpression in NSCLC and investigated the antitumor activity of the class I HDAC inhibitor entinostat in combination with paclitaxel. Our data showed that entinostat significantly enhanced paclitaxel-mediated anti-proliferative/anti-survival effects on NSCLC cells in vitro and in vivo. Mechanistically, entinostat selectively decreased expression of Survivin via induction of miR-203 (in vitro and in vivo) and miR-542-3p (in vitro). Moreover, analysis of NSCLC patient samples revealed that the expression levels of miR-203 were downregulated due to promoter hypermethylation in 45% of NSCLC tumors. In contrast, increased expression of both DNA methytransferase I (DNMT1) and Survivin was observed and significantly correlated with the reduced miR-203 in NSCLC. Collectively, these data shed new lights on the molecular mechanism of Survivin upregulation in NSCLC. Our findings also support that the combinatorial treatments of entinostat and paclitaxel will likely exhibit survival benefit in the NSCLC patients with overexpression of DNMT1 and/or Survivin. The DNMT1-miR-203-Survivin signaling axis may provide a new avenue for the development of novel epigenetic approaches to enhance the chemotherapeutic efficacy against NSCLC.
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Affiliation(s)
- Shuiliang Wang
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Ling Zhu
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Weimin Zuo
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Zhiyong Zeng
- Department of Thoracic Surgery, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Lianghu Huang
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Fengjin Lin
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Rong Lin
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Jin Wang
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Jun Lu
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Qinghua Wang
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Lingjing Lin
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Huiyue Dong
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Weizhen Wu
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Kai Zheng
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Jinquan Cai
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Shunliang Yang
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Yujie Ma
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Shixin Ye
- Department of Thoracic Surgery, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Wei Liu
- Department of Pathology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Yinghao Yu
- Department of Pathology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Jianming Tan
- Fujian Key Laboratory of Transplant Biology, Fuzhou General Hospital, Xiamen University, Fuzhou, Fujian, China
| | - Bolin Liu
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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9
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Zabkiewicz J, Gilmour M, Hills R, Vyas P, Bone E, Davidson A, Burnett A, Knapper S. The targeted histone deacetylase inhibitor tefinostat (CHR-2845) shows selective in vitro efficacy in monocytoid-lineage leukaemias. Oncotarget 2017; 7:16650-62. [PMID: 26934551 PMCID: PMC4941341 DOI: 10.18632/oncotarget.7692] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 01/17/2016] [Indexed: 01/18/2023] Open
Abstract
Tefinostat (CHR-2845) is a novel monocyte/macrophage-targeted histone deacetylase (HDAC) inhibitor which is cleaved into its active acid by the intracellular esterase human carboxylesterase-1 (hCE-1). The in vitro efficacy of tefinostat was characterised in cell lines and in a cohort of 73 primary AML and CMML samples. Dose-dependent induction of apoptosis and significant growth inhibitory effects were seen in myelomonocytic (M4), monocytic/monoblastic (M5) and CMML samples in comparison to non-monocytoid AML sub-types (p = 0.007). Importantly, no growth inhibitory effects were seen in normal bone marrow CD34+ cells exposed to AML-toxic doses of tefinostat in clonogenic assays. Expression of hCE-1 was measured by intracellular flow cytometry and immunoblotting across the cohort, with highest levels seen in M5 AML patients. hCE-1 levels correlated with significantly increased tefinostat sensitivity (low EC50) as measured by growth inhibition assays (p = 0.001) and concomitant elevation of the mature monocytoid marker CD14+. Strong induction of intracellular histone protein acetylation was observed in tefinostat-responsive samples, as were high levels of the DNA damage sensor γ-H2A.X, highlighting potential biomarkers of patient responsiveness. Synergistic interaction between tefinostat and the current standard treatment cytarabine was demonstrated in dose response and clonogenic assays using simultaneous drug addition in primary samples (median Combination Index value = 0.51). These data provide a strong rationale for the further clinical evaluation of tefinostat in monocytoid-lineage haematological neoplasms including CMML and monocyte-lineage AMLs.
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Affiliation(s)
- Joanna Zabkiewicz
- Department of Haematology, Experimental Cancer Medicine Centre (ECMC), Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Marie Gilmour
- Department of Haematology, Experimental Cancer Medicine Centre (ECMC), Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Robert Hills
- Department of Haematology, Experimental Cancer Medicine Centre (ECMC), Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Pares Vyas
- Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | | | | | - Alan Burnett
- Department of Haematology, Experimental Cancer Medicine Centre (ECMC), Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Steven Knapper
- Department of Haematology, Experimental Cancer Medicine Centre (ECMC), Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, UK
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10
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Cosenza M, Civallero M, Marcheselli L, Sacchi S, Pozzi S. Ricolinostat, a selective HDAC6 inhibitor, shows anti-lymphoma cell activity alone and in combination with bendamustine. Apoptosis 2017; 22:827-840. [PMID: 28315173 PMCID: PMC5401712 DOI: 10.1007/s10495-017-1364-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Histone deacetylase inhibitors (HDACis) have emerged as a new class of anticancer agents, targeting the biological process including cell cycle and apoptosis. We investigated and explained the anticancer effects of an HDAC6 inhibitor, ricolinostat alone and in combination with bendamustine in lymphoma cell lines. Cell viability was measured by MTT assay. Apoptosis, reactive oxygen species (ROS) generation, Bcl-2 protein expression, cell cycle progression and tubuline expression were determined by flow cytometry. The effects of ricolinostat alone and in combination on the caspases, PI3K/Akt, Bcl-2 pathways, ER stress and UPR were assessed by immunoblotting. Ricolinostat shows anti lymphoma activity when used as single agent and its capability to induce apoptosis is synergistically potentiated by the bendamustine in lymphoma cell lines. Drug combination reduced the proportion of cells in the G0/G1 and S phases and caused an increase of "sub-G0/G1" peak. The synergistic effect accompanied with the increased ROS, activation of caspase-8, -9, and -3, the cleavage of PARP and modulated by Bcl-2 proteins family. In addition, the exposure of ricolinostat induced the acetylation level of α-tubulin, the extend of which was not further modified by bendamustine. Finally, the apoptosis effect of ricolinostat/bendamustine may be mediated by a corresponding effect on microtubule stabilization. Our data suggest that ricolinostat in combination with bendamustine may be a novel combination with potential for use as an antitumor agent in lymphoma.
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Affiliation(s)
- Maria Cosenza
- Program of Innovative Therapies in Oncology and Haematology, Department of Diagnostic Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Monica Civallero
- Program of Innovative Therapies in Oncology and Haematology, Department of Diagnostic Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Luigi Marcheselli
- Program of Innovative Therapies in Oncology and Haematology, Department of Diagnostic Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Stefano Sacchi
- Program of Innovative Therapies in Oncology and Haematology, Department of Diagnostic Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy
| | - Samantha Pozzi
- Program of Innovative Therapies in Oncology and Haematology, Department of Diagnostic Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Via del Pozzo, 71, 41124, Modena, Italy.
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11
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Michel D, Mohammed-Saeid W, Getson H, Roy C, Poorghorban M, Chitanda JM, Verrall R, Badea I. Evaluation of β-cyclodextrin-modified gemini surfactant-based delivery systems in melanoma models. Int J Nanomedicine 2016; 11:6703-6712. [PMID: 28003746 PMCID: PMC5161338 DOI: 10.2147/ijn.s121156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Novel drug delivery systems are developed to improve the biological behavior of poorly soluble drugs and to improve therapeutic outcomes. In melanoma therapy, the goal is efficient drug delivery and mitigation of drug resistance. Melphalan (Mel), a currently used therapeutic agent for melanoma, requires solvent system for solubilization, leading to poor chemical stability. Moreover, drug resistance often renders the drug inefficient in clinical setting. A novel β-cyclodextrin-modified gemini surfactant (CDgemini) delivery system was developed to incorporate Mel in order to improve its physicochemical and biological behavior. Melphalan nanoparticles (Mel-NP) showed optimal particle size in the 200-250 nm range for endocytosis and induced significantly higher cell death compared with Mel (50% of inhibitory concentration [IC50] of 36 µM for the complexes vs 82 µM for Mel). The CDgemini delivery system did not alter the pathway of the cellular death triggered by Mel and caused no intrinsic toxicity to the cells. The Mel-NP complexes induced significant cell death in melanoma cells that were rendered resistant to Mel. These findings demonstrate in principle the applicability of the CDgemini delivery system as safe and efficient alternative to the current melanoma therapy, especially in chemoresistant cases.
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Affiliation(s)
- Deborah Michel
- Drug Design and Discovery Research Group, College of Pharmacy and Nutrition
| | | | - Heather Getson
- Drug Design and Discovery Research Group, College of Pharmacy and Nutrition
| | - Caitlin Roy
- Drug Design and Discovery Research Group, College of Pharmacy and Nutrition
| | | | - Jackson M Chitanda
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada
| | - Ronald Verrall
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada
| | - Ildiko Badea
- Drug Design and Discovery Research Group, College of Pharmacy and Nutrition
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12
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A novel SAHA-bendamustine hybrid induces apoptosis of leukemia cells. Oncotarget 2016; 6:20121-31. [PMID: 26015396 PMCID: PMC4652992 DOI: 10.18632/oncotarget.4041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 04/23/2015] [Indexed: 12/21/2022] Open
Abstract
Hybrid anticancer drugs are of great therapeutic interests as they can potentially overcome the deficiencies of conventional chemotherapy drugs and improve the efficacy. Many studies have revealed that the combination of histone deacetylase inhibitors (HDACi) and alkylating agents have synergistic effects. We reported a novel hybrid NL-101, in which the side chain of bendamustine was replaced with the hydroxamic acid of HDACi vorinostat (SAHA). NL-101 exhibited efficient anti-proliferative activity on myeloid leukemia cells especially Kasumi-1 and NB4 cells, accompanied by S phase arrest and caspase-3 dependent apoptosis. Importantly, it presented both the properties of HDAC inhibition and DNA damaging, as assessed by the acetylation of histone H3 and DNA double-strand breaks marker γ-H2AX. NL-101 also down-regulated the expression of anti-apoptotic protein Bcl-xL which was involved in the mitochondrial death pathway. Meanwhile, NL-101 induced apoptosis and DNA damage in primary cells from acute myeloid leukemia (AML) patients. NL-101 treatment could significantly prolong the survival time of t(8;21) leukemia mice with enhanced efficacy than bendamustine. These data demonstrate that NL-101 could be a potent and selective agent for leukemia treatment.
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13
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Tandon N, Ramakrishnan V, Kumar SK. Clinical use and applications of histone deacetylase inhibitors in multiple myeloma. Clin Pharmacol 2016; 8:35-44. [PMID: 27226735 PMCID: PMC4866749 DOI: 10.2147/cpaa.s94021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The incorporation of various novel therapies has resulted in a significant survival benefit in newly diagnosed and relapsed patients with multiple myeloma (MM) over the past decade. Despite these advances, resistance to therapy leads to eventual relapse and fatal outcomes in the vast majority of patients. Hence, there is an unmet need for new safe and efficacious therapies for continued improvement in outcomes. Given the role of epigenetic aberrations in the pathogenesis and progression of MM and the success of histone deacetylase inhibitors (HDACi) in other malignancies, many HDACi have been tried in MM. Various preclinical studies helped us to understand the antimyeloma activity of different HDACi in MM as a single agent or in combination with conventional, novel, and immune therapies. The early clinical trials of HDACi depicted only modest single-agent activity, but recent studies have revealed encouraging clinical response rates in combination with other antimyeloma agents, especially proteasome inhibitors. This led to the approval of the combination of panobinostat and bortezomib for the treatment of relapsed/refractory MM patients with two prior lines of treatment by the US Food and Drug Administration. However, it remains yet to be defined how we can incorporate HDACi in the current therapeutic paradigms for MM that will help to achieve longer disease control and significant survival benefits. In addition, isoform-selective and/or class-selective HDAC inhibition to reduce unfavorable side effects needs further evaluation.
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Affiliation(s)
- Nidhi Tandon
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | - Shaji K Kumar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
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Viktorsson K, Shah CH, Juntti T, Hååg P, Zielinska-Chomej K, Sierakowiak A, Holmsten K, Tu J, Spira J, Kanter L, Lewensohn R, Ullén A. Melphalan-flufenamide is cytotoxic and potentiates treatment with chemotherapy and the Src inhibitor dasatinib in urothelial carcinoma. Mol Oncol 2016; 10:719-34. [PMID: 26827254 PMCID: PMC5423156 DOI: 10.1016/j.molonc.2015.12.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 12/23/2015] [Accepted: 12/23/2015] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Chemotherapy options in advanced urothelial carcinoma (UC) remain limited. Here we evaluated the peptide-based alkylating agent melphalan-flufenamide (mel-flufen) for UC. METHODS UC cell lines J82, RT4, TCCsup and 5637 were treated with mel-flufen, alone or combined with cisplatin, gemcitabine, dasatinib or bestatin. Cell viability (MTT assay), intracellular drug accumulation (liquid chromatography) apoptosis induction (apoptotic cell nuclei morphology, western blot analysis of PARP-1/caspase-9 cleavage and Bak/Bax activation) were evaluated. Kinome alterations were characterized by PathScan array and phospho-Src validated by western blotting. Aminopeptidase N (ANPEP) expression was evaluated in UC clinical specimens in relation to patient outcome. RESULTS In J82, RT4, TCCsup and 5637 UC cells, mel-flufen amplified the intracellular loading of melphalan in part via aminopeptidase N (ANPEP), resulting in increased cytotoxicity compared to melphalan alone. Mel-flufen induced apoptosis seen as activation of Bak/Bax, cleavage of caspase-9/PARP-1 and induction of apoptotic cell nuclei morphology. Combining mel-flufen with cisplatin or gemcitabine in J82 cells resulted in additive cytotoxic effects and for gemcitabine also increased apoptosis induction. Profiling of mel-flufen-induced kinome alterations in J82 cells revealed that mel-flufen alone did not inhibit Src phosphorylation. Accordingly, the Src inhibitor dasatinib sensitized for mel-flufen cytotoxicity. Immunohistochemical analysis of the putative mel-flufen biomarker ANPEP demonstrated prominent expression levels in tumours from 82 of 83 cystectomy patients. Significantly longer median overall survival was found in patients with high ANPEP expression (P = 0.02). CONCLUSION Mel-flufen alone or in combination with cisplatin, gemcitabine or Src inhibition holds promise as a novel treatment for UC.
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Affiliation(s)
- Kristina Viktorsson
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden.
| | - Carl-Henrik Shah
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden; Department of Oncology, Radiumhemmet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Therese Juntti
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Petra Hååg
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Katarzyna Zielinska-Chomej
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Adam Sierakowiak
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Karin Holmsten
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden; Department of Oncology, Radiumhemmet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Jessica Tu
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Jack Spira
- InSpira Medical AB, SE-135 53 Tyresö, Sweden
| | - Lena Kanter
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden
| | - Rolf Lewensohn
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden; Department of Oncology, Radiumhemmet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Anders Ullén
- Karolinska Institutet, Department of Oncology-Pathology, Karolinska Biomics Center, SE-171 76, Stockholm, Sweden; Department of Oncology, Radiumhemmet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
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15
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Targeting the Mitotic Catastrophe Signaling Pathway in Cancer. Mediators Inflamm 2015; 2015:146282. [PMID: 26491220 PMCID: PMC4600505 DOI: 10.1155/2015/146282] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 05/30/2015] [Indexed: 12/14/2022] Open
Abstract
Mitotic catastrophe, as defined in 2012 by the International Nomenclature Committee on Cell Death, is a bona fide intrinsic oncosuppressive mechanism that senses mitotic failure and responds by driving a cell to an irreversible antiproliferative fate of death or senescence. Thus, failed mitotic catastrophe can promote the unrestrained growth of defective cells, thereby representing a major gateway to tumour development. Furthermore, the activation of mitotic catastrophe offers significant therapeutic advantage which has been exploited in the action of conventional and targeted anticancer agents. Yet, despite its importance in tumour prevention and treatment, the molecular mechanism of mitotic catastrophe is not well understood. A better understanding of the signals that determine cell fate following failed or defective mitosis will reveal new opportunities to selectively target and enhance the programme for therapeutic benefit and reveal biomarkers to predict patient response. This review is focused on the molecular mechanism of mitotic catastrophe induction and signalling and highlights current strategies to exploit the process in cancer therapy.
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16
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Kong Y, Barisone GA, Sidhu RS, O'Donnell RT, Tuscano JM. Efficacy of Combined Histone Deacetylase and Checkpoint Kinase Inhibition in a Preclinical Model of Human Burkitt Lymphoma. Mol Med 2015; 21:824-832. [PMID: 26322845 DOI: 10.2119/molmed.2015.00032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 08/20/2015] [Indexed: 01/19/2023] Open
Abstract
Checkpoint kinase inhibition has been studied as a way of enhancing the effectiveness of DNA-damaging agents. More recently, histone deacetylase inhibitors have shown efficacy in several cancers, including non-Hodgkin lymphoma. To evaluate the effectiveness of this combination for the treatment of lymphoma, we examined the combination of AR42, a histone deacetylase inhibitor, and checkpoint kinase 2 (CHEK2) inhibitor II in vitro and in vivo. The combination resulted in up to 10-fold increase in potency in five Burkitt lymphoma cell lines when compared with either drug alone. Both drugs inhibited tumor progression in xenograft models, but the combination was more effective than either agent alone, resulting in regression of established tumors. No toxicity was observed. These results suggest that the combination of histone deacetylase inhibition and checkpoint kinase inhibition represent an effective and nontoxic treatment option that should be further explored in preclinical and clinical studies.
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Affiliation(s)
- YanGuo Kong
- Division of Hematology and Oncology, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, United States of America.,Department of Neurosurgery, Peking University Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Gustavo A Barisone
- Division of Hematology and Oncology, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, United States of America
| | - Ranjit S Sidhu
- Division of Hematology and Oncology, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, United States of America
| | - Robert T O'Donnell
- Division of Hematology and Oncology, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, United States of America.,Department of Veterans Affairs, Northern California Healthcare System, Sacramento, California, United States of America
| | - Joseph M Tuscano
- Division of Hematology and Oncology, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, United States of America.,Department of Veterans Affairs, Northern California Healthcare System, Sacramento, California, United States of America
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17
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Blattmann C, Oertel S, Thiemann M, Dittmar A, Roth E, Kulozik AE, Ehemann V, Weichert W, Huber PE, Stenzinger A, Debus J. Histone deacetylase inhibition sensitizes osteosarcoma to heavy ion radiotherapy. Radiat Oncol 2015; 10:146. [PMID: 26178881 PMCID: PMC4504102 DOI: 10.1186/s13014-015-0455-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 07/06/2015] [Indexed: 01/20/2023] Open
Abstract
Background Minimal improvements in treatment or survival of patients with osteosarcoma have been achieved during the last three decades. Especially in the case of incomplete tumor resection, prognosis remains poor. Heavy ion radiotherapy (HIT) and modern anticancer drugs like histone deacetylase inhibitors (HDACi) have shown promising effects in osteosarcoma in vitro. In this study, we tested the effect of HIT and the combination of HIT and the HDACi suberoylanilide hydroxamic acid (SAHA) in a xenograft mouse model. Methods Osteosarcoma xenografts were established by subcutaneous injection of KHOS-24OS cells and treated with either vehicle (DMSO), SAHA, HIT or HIT and SAHA. Tumor growth was determined and tumor necrosis, proliferation rate, apoptotic rate as well as vessel density were evaluated. Results Here, we show that the combination of HIT and SAHA induced a significant delay of tumor growth through increased rate of apoptosis, increased expression of p53 and p21Waf1/Cip1, inhibition of proliferation and angiogenesis compared to tumors treated with HIT only. Conclusion HIT and in particular the combination of HIT and histone deacetylase inhibition is a promising treatment strategy in OS and may be tested in clinical trials.
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Affiliation(s)
- Claudia Blattmann
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,Pädiatrie 5, Olgahospital, Kriegsbergstr. 62, 70174, Stuttgart, Germany.
| | - Susanne Oertel
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Markus Thiemann
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Anne Dittmar
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Eva Roth
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Andreas E Kulozik
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,National Center for Tumor Diseases (NCT), University of Heidelberg, Heidelberg, Germany.
| | - Volker Ehemann
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany.
| | - Wilko Weichert
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,National Center for Tumor Diseases (NCT), University of Heidelberg, Heidelberg, Germany.
| | - Peter E Huber
- Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | | | - Jürgen Debus
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
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Ruiz R, Raez LE, Rolfo C. Entinostat (SNDX-275) for the treatment of non-small cell lung cancer. Expert Opin Investig Drugs 2015; 24:1101-9. [DOI: 10.1517/13543784.2015.1056779] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Min A, Im SA, Kim DK, Song SH, Kim HJ, Lee KH, Kim TY, Han SW, Oh DY, Kim TY, O'Connor MJ, Bang YJ. Histone deacetylase inhibitor, suberoylanilide hydroxamic acid (SAHA), enhances anti-tumor effects of the poly (ADP-ribose) polymerase (PARP) inhibitor olaparib in triple-negative breast cancer cells. Breast Cancer Res 2015; 17:33. [PMID: 25888415 PMCID: PMC4425881 DOI: 10.1186/s13058-015-0534-y] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 02/10/2015] [Indexed: 12/19/2022] Open
Abstract
Introduction Olaparib, a poly (ADP-ribose) polymerase (PARP) inhibitor, has been found to have therapeutic potential for treating cancers associated with impaired DNA repair capabilities, particularly those with deficiencies in the homologous recombination repair (HRR) pathway. Histone deacetylases (HDACs) are important for enabling functional HRR of DNA by regulating the expression of HRR-related genes and promoting the accurate assembly of HRR-directed sub-nuclear foci. Thus, HDAC inhibitors have recently emerged as a therapeutic agent for treating cancer by inhibiting DNA repair. Based on this, HDAC inhibition could be predicted to enhance the anti-tumor effect of PARP inhibitors in cancer cells by blocking the HRR pathway. Methods We determined whether suberoylanilide hydroxamic acid (SAHA), a HDAC inhibitor, could enhance the anti-tumor effects of olaparib on breast cancer cell lines using a cytotoxic assay, cell cycle analysis, and Western blotting. We evaluated how exposure to SAHA affects the expression of HRR-associated genes. The accumulation of DNA double strand breaks (DSBs) induced by combination treatment was assessed. Induction of autophagy was monitored by imaging green fluorescent protein-tagged microtubule-associated protein 1A/1B-light chain 3 (LC3) expression following co-treatment with olaparib and SAHA. These in vitro data were validated in vivo using a human breast cancer xenograft model. Results Triple-negative breast cancer cell (TNBC) lines showed heterogeneous responses to the PARP and HDAC inhibitors. Co-administration of olaparib and SAHA synergistically inhibited the growth of TNBC cells that expressed functional Phosphatase and tensin homolog (PTEN). This effect was associated with down-regulation of the proliferative signaling pathway, increased apoptotic and autophagic cell death, and accumulation of DNA damage. The combined anti-tumor effect of olaparib and SAHA was also observed in a xenograft model. These data suggest that PTEN expression in TNBC cells can sensitize the cell response to simultaneous inhibition of PARP and HDAC both in vitro and in vivo. Conclusion Our findings suggest that expression of functional PTEN may serve as a biomarker for selecting TNBC patients that would favorably respond to a combination of olaparib with SAHA. This provides a strong rationale for treating TNBC patients with PTEN expression with a combination therapy consisting of olaparib and SAHA. Electronic supplementary material The online version of this article (doi:10.1186/s13058-015-0534-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ahrum Min
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | - Seock-Ah Im
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | | | - Sang-Hyun Song
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea.
| | - Hee-Jun Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Chung Ang University College of Medicine, Seoul, 156-755, Korea.
| | - Kyung-Hun Lee
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | - Tae-Yong Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | - Sae-Won Han
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | - Do-Youn Oh
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | - Tae-You Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
| | | | - Yung-Jue Bang
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, 110-799, Korea. .,Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-799, Korea.
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20
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Maes K, De Smedt E, Lemaire M, De Raeve H, Menu E, Van Valckenborgh E, McClue S, Vanderkerken K, De Bruyne E. The role of DNA damage and repair in decitabine-mediated apoptosis in multiple myeloma. Oncotarget 2015; 5:3115-29. [PMID: 24833108 PMCID: PMC4102796 DOI: 10.18632/oncotarget.1821] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
DNA methyltransferase inhibitors (DNMTi) and histone deacetylase inhibitors (HDACi) are under investigation for the treatment of cancer, including the plasma cell malignancy multiple myeloma (MM). Evidence exists that DNA damage and repair contribute to the cytotoxicity mediated by the DNMTi decitabine. Here, we investigated the DNA damage response (DDR) induced by decitabine in MM using 4 human MM cell lines and the murine 5T33MM model. In addition, we explored how the HDACi JNJ-26481585 affects this DDR. Decitabine induced DNA damage (gamma-H2AX foci formation), followed by a G0/G1- or G2/M-phase arrest and caspase-mediated apoptosis. JNJ-26481585 enhanced the anti-MM effect of decitabine both in vitro and in vivo. As JNJ-26481585 did not enhance decitabine-mediated gamma-H2AX foci formation, we investigated the DNA repair response towards decitabine and/or JNJ-26481585. Decitabine augmented RAD51 foci formation (marker for homologous recombination (HR)) and/or 53BP1 foci formation (marker for non-homologous end joining (NHEJ)). Interestingly, JNJ-26481585 negatively affected basal or decitabine-induced RAD51 foci formation. Finally, B02 (RAD51 inhibitor) enhanced decitabine-mediated apoptosis. Together, we report that decitabine-induced DNA damage stimulates HR and/or NHEJ. JNJ-26481585 negatively affects RAD51 foci formation, thereby providing an additional explanation for the combinatory effect between decitabine and JNJ-26481585.
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Affiliation(s)
- Ken Maes
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
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Down-regulation of HDAC5 inhibits growth of human hepatocellular carcinoma by induction of apoptosis and cell cycle arrest. Tumour Biol 2014; 35:11523-32. [PMID: 25129440 DOI: 10.1007/s13277-014-2358-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 07/14/2014] [Indexed: 10/24/2022] Open
Abstract
Histone deacetylases (HDACs) play a critical role in the proliferation, differentiation, and apoptosis of cancer cells. An obstacle for the application of HDAC inhibitors as effective anti-cancer therapeutics is that our current knowledge on the contributions of different HDACs in various cancer types remains scarce. The present study reported that the mRNA and protein levels of HDAC5 were up-regulated in human hepatocellular carcinoma (HCC) tissues and cells as shown by quantitative real-time PCR and Western blot. MTT assay and BrdU incorporation assay showed that the down-regulation of HDAC5 inhibited cell proliferation in HepG2, Hep3B, and Huh7 cell lines. Data from in vivo xenograft tumorigenesis model also demonstrated the anti-proliferative effect of HDAC5 depletion on tumor cell growth. Furthermore, the suppression of HDAC5 promoted cell apoptosis and induced G1-phase cell cycle arrest in HCC cells. On the molecular level, we observed altered expression of apoptosis-related proteins such as p53, bax, bcl-2, cyto C, and caspase 3 in HDAC5-shRNA-transfected cells. Knockdown of HDAC5 led to a significant up-regulation of p21 and down-regulation of cyclin D1 and CDK2/4/6. We also found that the down-regulation of HDAC5 substantially increased p53 stability and promoted its nuclear localization and transcriptional activity. Our study suggested that knockdown of HDAC5 could inhibit cancer cell proliferation by the induction of cell cycle arrest and apoptosis; thus, suppression of HDAC5 may be a viable option for treating HCC patients.
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Overcoming inherent resistance to histone deacetylase inhibitors in multiple myeloma cells by targeting pathways integral to the actin cytoskeleton. Cell Death Dis 2014; 5:e1134. [PMID: 24651437 PMCID: PMC3973216 DOI: 10.1038/cddis.2014.98] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 01/22/2014] [Accepted: 02/10/2014] [Indexed: 01/05/2023]
Abstract
Histone deacetylase inhibitors (HDACi) are novel chemotherapeutics undergoing evaluation in clinical trials for the potential treatment of patients with multiple myeloma (MM). Although HDACi have demonstrable synergy when combined with proteasome inhibitors (PIs), recent evidence indicates that combination of HDACi and PI is beneficial only in a subset of patients with advanced MM, clearly indicating that other rational combinations should be explored. In this context we hypothesized that understanding the molecular signature associated with inherent resistance to HDACi would provide a basis for the identification of therapeutic combinations with improved clinical efficacy. Using human myeloma cell lines (HMCL) categorized as sensitive, intermediate or resistant to HDACi, gene expression profiling (GEP) and gene ontology enrichment analyses were performed to determine if a genetic signature associated with inherent resistance to HDACi-resistance could be identified. Correlation of GEP to increasing or decreasing sensitivity to HDACi indicated a unique 35-gene signature that was significantly enriched for two pathways – regulation of actin cytoskeleton and protein processing in endoplasmic reticulum. When HMCL and primary MM samples were treated with a combination of HDACi and agents targeting the signaling pathways integral to the actin cytoskeleton, synergistic cell death was observed in all instances, thus providing a rationale for combining these agents with HDACi for the treatment of MM to overcome resistance. This report validates a molecular approach for the identification of HDACi partner drugs and provides an experimental framework for the identification of novel therapeutic combinations for anti-MM treatment.
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Surget S, Lemieux-Blanchard E, Maïga S, Descamps G, Le Gouill S, Moreau P, Amiot M, Pellat-Deceunynck C. Bendamustine and melphalan kill myeloma cells similarly through reactive oxygen species production and activation of the p53 pathway and do not overcome resistance to each other. Leuk Lymphoma 2014; 55:2165-73. [DOI: 10.3109/10428194.2013.871277] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Simmons JK, Patel J, Michalowski A, Zhang S, Wei BR, Sullivan P, Gamache B, Felsenstein K, Kuehl WM, Simpson RM, Zingone A, Landgren O, Mock BA. TORC1 and class I HDAC inhibitors synergize to suppress mature B cell neoplasms. Mol Oncol 2013; 8:261-72. [PMID: 24429254 DOI: 10.1016/j.molonc.2013.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 11/20/2013] [Accepted: 11/21/2013] [Indexed: 12/12/2022] Open
Abstract
Enhanced proliferative signaling and loss of cell cycle regulation are essential for cancer progression. Increased mitogenic signaling through activation of the mTOR pathway, coupled with deregulation of the Cyclin D/retinoblastoma (Rb) pathway is a common feature of lymphoid malignancies, including plasmacytoma (PCT), multiple myeloma (MM), Burkitt's lymphoma (BL), and mantle cell lymphoma (MCL). Here we evaluate the synergy of pharmacologically affecting both of these critical pathways using the mTOR inhibitor sirolimus and the histone deacetylase inhibitor entinostat. A dose-matrix screening approach found this combination to be highly active and synergistic in a panel of genetically diverse human MM cell lines. Synergy and activity was observed in mouse PCT and human BL and MCL cell lines tested in vitro, as well as in freshly isolated primary MM patient samples tested ex vivo. This combination had minimal effects on healthy donor cells and retained activity when tested in a co-culture system simulating the protective interaction of cancer cells with the tumor microenvironment. Combining sirolimus with entinostat enhanced cell cycle arrest and apoptosis. At the molecular level, entinostat increased the expression of cell cycle negative regulators including CDKN1A (p21) and CDKN2A (p16), while the combination decreased critical growth and survival effectors including Cyclin D, BCL-XL, BIRC5, and activated MAPK.
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Affiliation(s)
- John K Simmons
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Jyoti Patel
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Aleksandra Michalowski
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Shuling Zhang
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Bih-Rong Wei
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Patrick Sullivan
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Ben Gamache
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Kenneth Felsenstein
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - W Michael Kuehl
- Genetics Branch, National Cancer Institute, National Institutes of Health, USA
| | - R Mark Simpson
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA
| | - Adriana Zingone
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, USA
| | - Ola Landgren
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, USA
| | - Beverly A Mock
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, USA.
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Kaufman JL, Fabre C, Lonial S, Richardson PG. Histone deacetylase inhibitors in multiple myeloma: rationale and evidence for their use in combination therapy. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2013; 13:370-6. [PMID: 23787122 DOI: 10.1016/j.clml.2013.03.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/14/2013] [Accepted: 03/27/2013] [Indexed: 01/07/2023]
Abstract
Multiple myeloma (MM) arises from abnormal proliferation and survival (ie, a high proliferative index and a low apoptotic index) of mature immunoglobulin-producing plasma cells in the bone marrow. Development of novel therapeutic options, such as proteasome inhibitors and immunomodulatory agents (IMiDs), has improved treatment outcomes. However, patients often develop relapsed and refractory MM, thus requiring alternative treatment approaches. Histone acetyltransferases and histone deacetylases (HDACs) control the acetylation status of proteins and affect a broad array of physiologic processes (eg, cell cycle, apoptosis, and protein folding) involved in cell growth and survival. The discovery that HDACs might have a role in various hematologic malignancies, including MM, has led to the development of HDAC inhibitors as potential antitumor agents. Preclinical evidence from studies of HDAC inhibitors in combination with proteasome inhibitors (eg, bortezomib and carfilzomib), other antimyeloma agents, including IMiDs (eg, lenalidomide), and cytotoxic agents (eg, melphalan, pegylated liposomal doxorubicin), provides a strong scientific rationale for the evaluation of these regimens. Results from early stage clinical trials further support the use of HDAC inhibitors as a therapeutic option for MM, in combination with current and emerging antimyeloma agents. In this review, we examine the role of protein acetylation that underlies the antimyeloma effects of HDAC inhibitors, discuss the preclinical rationale for the use of HDAC inhibitors in combination with other antimyeloma agents, and provide an overview of the current clinical evidence supporting the use of HDAC inhibitors as a therapeutic option in MM.
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Affiliation(s)
- Jonathan L Kaufman
- Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA.
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Chauhan D, Ray A, Viktorsson K, Spira J, Paba-Prada C, Munshi N, Richardson P, Lewensohn R, Anderson KC. In vitro and in vivo antitumor activity of a novel alkylating agent, melphalan-flufenamide, against multiple myeloma cells. Clin Cancer Res 2013; 19:3019-31. [PMID: 23584492 PMCID: PMC4098702 DOI: 10.1158/1078-0432.ccr-12-3752] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE The alkylating agent melphalan prolongs survival in patients with multiple myeloma; however, it is associated with toxicities and development of drug-resistance. Here, we evaluated the efficacy of melphalan-flufenamide (mel-flufen), a novel dipeptide prodrug of melphalan in multiple myeloma. EXPERIMENTAL DESIGN Multiple myeloma cell lines, primary patient cells, and the human multiple myeloma xenograft animal model were used to study the antitumor activity of mel-flufen. RESULTS Low doses of mel-flufen trigger more rapid and higher intracellular concentrations of melphalan in multiple myeloma cells than are achievable by free melphalan. Cytotoxicity analysis showed significantly lower IC50 of mel-flufen than melphalan in multiple myeloma cells. Importantly, mel-flufen induces apoptosis even in melphalan- and bortezomib-resistant multiple myeloma cells. Mechanistic studies show that siRNA knockdown of aminopeptidase N, a key enzyme mediating intracellular conversion of mel-flufen to melphalan, attenuates anti-multiple myeloma activity of mel-flufen. Furthermore, mel-flufen-induced apoptosis was associated with: (i) activation of caspases and PARP cleavage; (ii) reactive oxygen species generation; (iii) mitochondrial dysfunction and release of cytochrome c; and (iv) induction of DNA damage. Moreover, mel-flufen inhibits multiple myeloma cell migration and tumor-associated angiogenesis. Human multiple myeloma xenograft studies showed a more potent inhibition of tumor growth in mice treated with mel-flufen than mice receiving equimolar doses of melphalan. Finally, combining mel-flufen with lenalidomide, bortezomib, or dexamethasone triggers synergistic anti-multiple myeloma activity. CONCLUSION Our preclinical study supports clinical evaluation of mel-flufen to enhance therapeutic potential of melphalan, overcome drug-resistance, and improve multiple myeloma patient outcome.
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Affiliation(s)
- Dharminder Chauhan
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Arghya Ray
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Kristina Viktorsson
- Department of Oncology/Pathology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Jack Spira
- Oncopeptides AB, Karolinska Institutet Science Park, Solna, Sweden
| | - Claudia Paba-Prada
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Nikhil Munshi
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Paul Richardson
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Rolf Lewensohn
- Department of Oncology/Pathology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Kenneth C. Anderson
- The LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
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Maes K, Menu E, Van Valckenborgh E, Van Riet I, Vanderkerken K, De Bruyne E. Epigenetic modulating agents as a new therapeutic approach in multiple myeloma. Cancers (Basel) 2013; 5:430-61. [PMID: 24216985 PMCID: PMC3730337 DOI: 10.3390/cancers5020430] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 04/03/2013] [Accepted: 04/08/2013] [Indexed: 12/31/2022] Open
Abstract
Multiple myeloma (MM) is an incurable B-cell malignancy. Therefore, new targets and drugs are urgently needed to improve patient outcome. Epigenetic aberrations play a crucial role in development and progression in cancer, including MM. To target these aberrations, epigenetic modulating agents, such as DNA methyltransferase inhibitors (DNMTi) and histone deacetylase inhibitors (HDACi), are under intense investigation in solid and hematological cancers. A clinical benefit of the use of these agents as single agents and in combination regimens has been suggested based on numerous studies in pre-clinical tumor models, including MM models. The mechanisms of action are not yet fully understood but appear to involve a combination of true epigenetic changes and cytotoxic actions. In addition, the interactions with the BM niche are also affected by epigenetic modulating agents that will further determine the in vivo efficacy and thus patient outcome. A better understanding of the molecular events underlying the anti-tumor activity of the epigenetic drugs will lead to more rational drug combinations. This review focuses on the involvement of epigenetic changes in MM pathogenesis and how the use of DNMTi and HDACi affect the myeloma tumor itself and its interactions with the microenvironment.
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Affiliation(s)
- Ken Maes
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium
| | - Eline Menu
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium
| | - Els Van Valckenborgh
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium
| | - Ivan Van Riet
- Stem Cell Laboratory, Department Clinical Hematology, Universitair Ziekenhuis Brussel (UZ Brussel), Laarbeeklaan 101, 1090 Brussel, Belgium
| | - Karin Vanderkerken
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium
| | - Elke De Bruyne
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussel, Belgium
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Cai B, Lyu H, Huang J, Wang S, Lee CK, Gao C, Liu B. Combination of bendamustine and entinostat synergistically inhibits proliferation of multiple myeloma cells via induction of apoptosis and DNA damage response. Cancer Lett 2013; 335:343-50. [PMID: 23459296 DOI: 10.1016/j.canlet.2013.02.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 02/19/2013] [Accepted: 02/22/2013] [Indexed: 01/06/2023]
Abstract
Bendamustine, a hybrid molecule of purine analog and alkylator, induces cell death by activation of apoptosis, DNA damage response, and mitotic catastrophe. Entinostat, a selective class I inhibitor of histone deacetylase (HDAC), exerts anti-tumor activity in various cancer types, including multiple myeloma (MM). We sought to determine the combinatorial effects of bendamustine and entinostat on MM cells. Cell growth assays showed that bendamustine or entinostat inhibited proliferation in a dose-dependent manner, and their combinations synergistically induced growth inhibition in all MM cells tested. An apoptotic-ELISA and western blot assays on PARP cleavage and caspase-8 and caspase-3 revealed that bendamustine in combination with entinostat exhibited a much more potent activity than either agent alone to promote the MM cells undergoing apoptosis in a dose-dependent manner. Flow cytometric analysis found that entinostat exhibited distinct effects on cell cycle progression in different lines and bendamustine mainly arrested the cells at S phase, whereas their combinations dramatically blocked the S cells entering G2/M phase. Furthermore, studies on DNA damage response indicated that phospho-histone H2A.X (P-H2A.X), a hall marker of DNA double strand break, along with phosphorylated CHK2 (P-CHK2) was significantly enhanced by the combinations of bendamustine and entinostat as compared to either agent alone. These molecular changes were correlated with the increases in mitotic catastrophe. Collectively, our data demonstrate that bendamustine in combination with entinostat exhibit potent anti-proliferative/anti-survival activity in MM cells via induction of apoptosis and DNA damage response. Regimens consisting of bendamustine and/or entinostat may represent novel therapeutic strategies against MM.
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Affiliation(s)
- Bo Cai
- Department of Hematology, Chinese PLA General Hospital, Beijing, China
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Cai B, Wang S, Huang J, Lee CK, Gao C, Liu B. Cladribine and bendamustine exhibit inhibitory activity in dexamethasone-sensitive and -resistant multiple myeloma cells. Am J Transl Res 2013; 5:36-46. [PMID: 23390564 PMCID: PMC3560475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 01/02/2013] [Indexed: 06/01/2023]
Abstract
Cladribine (2-CDA) is a well-known purine nucleoside analog with activities against lymphoproliferative disorders such as hairy cell leukemia (HCL). Bendamustine, a hybrid molecule of purine analog and alkylator, induces apoptosis via DNA damage response and inhibition of mitotic checkpoint. Their therapeutic potential in patients with multiple myeloma (MM), particularly those become resistant to traditional chemotherapeutic agents, remains unclear. Here we study the effects of cladribine or bendamustine on dexamethasone-sensitive (MM1.S) and -resistant (MM1.R) MM cells. MTS-based proliferation assays showed that cladribine and bendamustine exhibited similar anti-proliferation/anti-survival effects on MM1.S and MM1.R cells in a dose-dependent manner. The IC50s of cladribine were approximately 35.3 nmol/L and 58 nmol/L for MM1.S and MM1.R cells, respectively. The IC50s of bendamustine were approximately 119.8 μmol/L (MM1.S) and 138 μmol/L (MM1.R). An apoptotic-ELISA and western blot assays of PARP cleavage and activation of caspase-8 and caspase-3 indicated that cladribine or bendamustine induced apoptosis in both cell lines. Similar results were obtained with flow cytometric analysis showing that cladribine or bendamustine increased the sub-G1 population. Treatment with bendamustine but not cladribine also resulted in cell cycle S-phase arrest. Either cladribine or bendamustine led to a remarkable increase of the phosphorylated H2A.X, CHK1 and CHK2 in both MM1.S and MM1.R cells, suggesting an induction of DNA damage response. Collectively, we demonstrate that cladribine and bendamustine exert potent inhibitory effects on dexamethasone-sensitive and -resistant MM cells in vitro. Our data suggest that MM patients, including those with dexamethasone resistance, may particularly benefit from cladribine or bendamustine.
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Affiliation(s)
- Bo Cai
- Department of Hematology, Chinese PLA General HospitalBeijing, China
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical CampusAurora, CO, USA
| | - Shuiliang Wang
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical CampusAurora, CO, USA
| | - Jingcao Huang
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical CampusAurora, CO, USA
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeTianjin, China
| | - Choon-Kee Lee
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical CampusAurora, CO, USA
- Current address: San Juan Cancer Center, Montrose Memorial HospitalMontrose, CO, USA
| | - Chunji Gao
- Department of Hematology, Chinese PLA General HospitalBeijing, China
| | - Bolin Liu
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical CampusAurora, CO, USA
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Preclinical activity, pharmacodynamic, and pharmacokinetic properties of a selective HDAC6 inhibitor, ACY-1215, in combination with bortezomib in multiple myeloma. Blood 2012; 119:2579-89. [PMID: 22262760 DOI: 10.1182/blood-2011-10-387365] [Citation(s) in RCA: 480] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Histone deacetylase (HDAC) enzymatic activity has been linked to the transcription of DNA in cancers including multiple myeloma (MM). Therefore, HDAC inhibitors used alone and in combination are being actively studied as novel therapies in MM. In the present study, we investigated the preclinical activity of ACY-1215, an HDAC6-selective inhibitor, alone and in combination with bortezomib in MM. Low doses of ACY-1215 combined with bortezomib triggered synergistic anti-MM activity, resulting in protracted endoplasmic reticulum stress and apoptosis via activation of caspase-3, caspase-8, and caspase-9 and poly (ADP) ribosome polymerase. In vivo, the anti-MM activity of ACY-1215 in combination with bortezomib was confirmed using 2 different xenograft SCID mouse models: human MM injected subcutaneously (the plasmacytoma model) and luciferase-expressing human MM injected intravenously (the disseminated MM model). Tumor growth was significantly delayed and overall survival was significantly prolonged in animals treated with the combination therapy. Pharmacokinetic data showed peak plasma levels of ACY-1215 at 4 hours after treatment coincident with an increase in acetylated α-tubulin, a marker of HDAC6 inhibition, by immunohistochemistry and Western blot analysis. These studies provide preclinical rationale for acetylated α-tubulin use as a pharmacodynamic biomarker in future clinical trials.
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Abstract
Histone deacetylases inhibitors (HDACi) represent a new epigenetic targeting therapy class, which is widely investigated in fundamental research and clinical trials. They are able to restore and increase tumor suppressor genes expression and to play an anti-tumoral activity through numerous targets, which are distributed all over the main differentiation, proliferation and survival cellular pathways. Their use in hematology led to vorinostat (SAHA) and romidepsin approval by FDA for the treatment of refractory cutaneous T-cell lymphomas. Preclinical and preliminary clinical results show a promising antineoplasic activity in most hematologic malignancies. This review will focus on the HDACi recent developments and current investigations, highlighted by recent communications.
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Knipstein J, Gore L. Entinostat for treatment of solid tumors and hematologic malignancies. Expert Opin Investig Drugs 2011; 20:1455-67. [DOI: 10.1517/13543784.2011.613822] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Weberpals JI, O'Brien AM, Niknejad N, Garbuio KD, Clark-Knowles KV, Dimitroulakos J. The effect of the histone deacetylase inhibitor M344 on BRCA1 expression in breast and ovarian cancer cells. Cancer Cell Int 2011; 11:29. [PMID: 21854619 PMCID: PMC3175148 DOI: 10.1186/1475-2867-11-29] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 08/19/2011] [Indexed: 01/27/2023] Open
Abstract
Background The inhibition of Breast Cancer 1 (BRCA1) expression sensitizes breast and ovarian cancer cells to platinum chemotherapy. However, therapeutically relevant agents that target BRCA1 expression have not been identified. Our recent report suggested the potential of the histone deacetylase (HDAC) inhibitor, M344, to inhibit BRCA1 expression. In this study, we further evaluated the effect of M344 on BRCA1 mRNA and protein expression, as well as its effect on cisplatin-induced cytotoxicity in various breast (MCF7, T-47D and HCC1937) and ovarian (A2780s, A2780cp and OVCAR-4) cancer cell lines. Results With the addition of M344, the platinum-sensitive breast and ovarian cancer cell lines that displayed relatively high BRCA1 protein levels demonstrated significant potentiation of cisplatin cytotoxicity in association with a reduction of BRCA1 protein. The cisplatin-resistant cell lines, T-47D and A2780s, elicited increased cytotoxicity of cisplatin with M344 and down regulation of BRCA1 protein levels. A2780s cells subjected to combination platinum and M344 treatment, demonstrated increased DNA damage as assessed by the presence of phosphorylated H2A.X foci in comparison to either treatment alone. Using Chromatin Immunoprecipitation, A2780s and MCF7 cells exposed to M344 alone and in combination with cisplatin, did not demonstrate enhanced acetylated Histone 4 at the BRCA1 promoter, suggesting an indirect effect on this promoter. Conclusions The enhanced sensitivity of HDAC inhibition to platinum may be mediated through a BRCA1-dependent mechanism in breast and ovarian cancer cells. The findings of this study may be important in the future design of clinical trials involving HDAC inhibitors using BRCA1 as a tumour biomarker.
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Affiliation(s)
- Johanne I Weberpals
- Division of Gynaecologic Oncology, The Ottawa Hospital, 501 Smyth Road, Ottawa, K1H 8L6, Canada.
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Requirement of p38 MAPK for a cell-death pathway triggered by vorinostat in MDA-MB-231 human breast cancer cells. Cancer Lett 2011; 315:112-21. [PMID: 22093617 DOI: 10.1016/j.canlet.2011.07.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 03/02/2011] [Accepted: 07/17/2011] [Indexed: 11/23/2022]
Abstract
Vorinostat is a histone deacetylase inhibitor that effectively suppresses cancer-cell proliferation by inducing cell-cycle arrest and/or apoptosis. We now show the involvement of p38 mitogen-activated protein kinase (MAPK) in the regulation of vorinostat-induced apoptosis in MDA-MB-231 human breast cancer cells. Vorinostat induced the hyperacetylation of histone H3, which correlated to apoptosis induction. Vorinostat-induced apoptosis occurred in parallel with the phosphorylation of p38 MAPK and the dephosphorylation of extracellular signal-regulated kinases 1 and 2 (ERK1/2). Knockdown of p38 MAPK prominently abrogated apoptosis induction and was accompanied by decreased caspase-3 cleavage. These findings support the notion that the activation of the p38 MAPK pathway followed by caspase-3 cleavage is responsible for vorinostat-induced apoptosis in MDA-MB-231 cells.
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Ma J, Wang S, Zhao M, Deng XS, Lee CK, Yu XD, Liu B. Therapeutic potential of cladribine in combination with STAT3 inhibitor against multiple myeloma. BMC Cancer 2011; 11:255. [PMID: 21679466 PMCID: PMC3141773 DOI: 10.1186/1471-2407-11-255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 06/16/2011] [Indexed: 12/14/2022] Open
Abstract
Background Cladribine or 2-chlorodeoxyadenosine (2-CDA) is a well-known purine nucleoside analog with particular activity against lymphoproliferative disorders, such as hairy cell leukemia (HCL). Its benefits in multiple myeloma (MM) remain unclear. Here we report the inhibitory effects of cladribine on MM cell lines (U266, RPMI8226, MM1.S), and its therapeutic potential in combination with a specific inhibitor of the signal transducer and activator of transcription 3 (STAT3). Methods MTS-based proliferation assays were used to determine cell viability in response to cladribine. Cell cycle progression was examined by flow cytometry analysis. Cells undergoing apoptosis were evaluated with Annexin V staining and a specific ELISA to quantitatively measure cytoplasmic histone-associated DNA fragments. Western blot analyses were performed to determine the protein expression levels and activation. Results Cladribine inhibited cell proliferation of MM cells in a dose-dependent manner, although the three MM cell lines exhibited a remarkably different responsiveness to cladribine. The IC50 of cladribine for U266, RPMI8226, or MM1.S cells was approximately 2.43, 0.75, or 0.18 μmol/L, respectively. Treatment with cladribine resulted in a significant G1 arrest in U266 and RPMI8226 cells, but only a minor increase in the G1 phase for MM1.S cells. Apoptosis assays with Annexin V-FITC/PI double staining indicated that cladribine induced apoptosis of U266 cells in a dose-dependent manner. Similar results were obtained with an apoptotic-ELISA showing that cladribine dramatically promoted MM1.S and RPMA8226 cells undergoing apoptosis. On the molecular level, cladribine induced PARP cleavage and activation of caspase-8 and caspase-3. Meanwhile, treatment with cladribine led to a remarkable reduction of the phosphorylated STAT3 (P-STAT3), but had little effect on STAT3 protein levels. The combinations of cladribine and a specific STAT3 inhibitor as compared to either agent alone significantly induced apoptosis in all three MM cell lines. Conclusions Cladribine exhibited inhibitory effects on MM cells in vitro. MM1.S is the only cell line showing significant response to the clinically achievable concentrations of cladribine-induced apoptosis and inactivation of STAT3. Our data suggest that MM patients with the features of MM1.S cells may particularly benefit from cladribine monotherapy, whereas cladribine in combination with STAT3 inhibitor exerts a broader therapeutic potential against MM.
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Affiliation(s)
- Jian Ma
- International Medical Centre of PLA General Hospital, Beijing, PR China
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Vitale I, Galluzzi L, Castedo M, Kroemer G. Mitotic catastrophe: a mechanism for avoiding genomic instability. Nat Rev Mol Cell Biol 2011; 12:385-92. [PMID: 21527953 DOI: 10.1038/nrm3115] [Citation(s) in RCA: 605] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The improper distribution of chromosomes during mitosis compromises cellular functions and can reduce cellular fitness or contribute to malignant transformation. As a countermeasure, higher eukaryotes have developed strategies for eliminating mitosis-incompetent cells, one of which is mitotic catastrophe. Mitotic catastrophe is driven by a complex and poorly understood signalling cascade but, from a functional perspective, it can be defined as an oncosuppressive mechanism that precedes (and is distinct from) apoptosis, necrosis or senescence. Accordingly, the disruption of mitotic catastrophe precipitates tumorigenesis and cancer progression, and its induction constitutes a therapeutic endpoint.
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Affiliation(s)
- Ilio Vitale
- Institut National de la Santé et de la Recherche Médicale (INSERM), Villejuif, France
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