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El Omari N, Khalid A, Makeen HA, Alhazmi HA, Albratty M, Mohan S, Tan CS, Ming LC, Chook JB, Bouyahya A. Stochasticity of anticancer mechanisms underlying clinical effectiveness of vorinostat. Heliyon 2024; 10:e33052. [PMID: 39021957 PMCID: PMC11253278 DOI: 10.1016/j.heliyon.2024.e33052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 06/07/2024] [Accepted: 06/13/2024] [Indexed: 07/20/2024] Open
Abstract
The Food and Drug Administration (FDA) has approved vorinostat, also called Zolinza®, for its effectiveness in fighting cancer. This drug is a suberoyl-anilide hydroxamic acid belonging to the class of histone deacetylase inhibitors (HDACis). Its HDAC inhibitory potential allows it to accumulate acetylated histones. This, in turn, can restore normal gene expression in cancer cells and activate multiple signaling pathways. Experiments have proven that vorinostat induces histone acetylation and cytotoxicity in many cancer cell lines, increases the level of p21 cell cycle proteins, and enhances pro-apoptotic factors while decreasing anti-apoptotic factors. Additionally, it regulates the immune response by up-regulating programmed death-ligand 1 (PD-L1) and interferon gamma receptor 1 (IFN-γR1) expression, and can impact proteasome and/or aggresome degradation, endoplasmic reticulum function, cell cycle arrest, apoptosis, tumor microenvironment remodeling, and angiogenesis inhibition. In this study, we sought to elucidate the precise molecular mechanism by which Vorinostat inhibits HDACs. A deeper understanding of these mechanisms could improve our understanding of cancer cell abnormalities and provide new therapeutic possibilities for cancer treatment.
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Affiliation(s)
- Nasreddine El Omari
- High Institute of Nursing Professions and Health Techniques of Tetouan, Tetouan, Morocco
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box 114, Postal Code 45142, Jazan, Saudi Arabia
- Medicinal and Aromatic Plants Research Institute, National Center for Research, P.O. Box: 2424, Khartoum, 11111, Sudan
| | - Hafiz A. Makeen
- Pharmacy Practice Research Unit, Clinical Pharmacy Department, Faculty of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Hassan A. Alhazmi
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box 114, Postal Code 45142, Jazan, Saudi Arabia
- Department of Pharmaceutical Chemistry and Pharmacognosy, College of Pharmacy, Jazan University, P.O. Box 114, Postal Code 45142, Jazan, Saudi Arabia
| | - Mohammed Albratty
- Department of Pharmaceutical Chemistry and Pharmacognosy, College of Pharmacy, Jazan University, P.O. Box 114, Postal Code 45142, Jazan, Saudi Arabia
| | - Syam Mohan
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box 114, Postal Code 45142, Jazan, Saudi Arabia
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Ching Siang Tan
- School of Pharmacy, KPJ Healthcare University, Nilai, Malaysia
| | - Long Chiau Ming
- School of Medical and Life Sciences, Sunway University, Sunway City, Malaysia
| | - Jack Bee Chook
- School of Medical and Life Sciences, Sunway University, Sunway City, Malaysia
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10106, Morocco
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de Almeida LC, Calil FA, Machado-Neto JA, Costa-Lotufo LV. DNA damaging agents and DNA repair: From carcinogenesis to cancer therapy. Cancer Genet 2021; 252-253:6-24. [DOI: 10.1016/j.cancergen.2020.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 02/09/2023]
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Wang M, Fang X, Wang X. Emerging role of histone deacetylase inhibitors in the treatment of diffuse large B-cell lymphoma. Leuk Lymphoma 2019; 61:763-775. [PMID: 31766900 DOI: 10.1080/10428194.2019.1691194] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Although current immunochemotherapy has increased the therapeutic efficacy in diffuse large B-cell lymphoma (DLBCL), there are still some patients who present unfavorable outcomes. Novel effective treatment strategies are needed to improve the prognosis of DLBCL. In this review, we discussed the functional mechanisms and therapeutic applications of histone deacetylases inhibitors (HDIs) in DLBCL from preclinical and clinical studies. The mechanistic rationale of HDIs involved a wide range of effects including the regulation of transcription factors, tumor suppressors, and cell surface molecules. Histone deacetylases inhibitors as monotherapy performed limited activity in the treatment of DLBCL in present clinical trials, but its combination with other regimens has emerged as potential treatment candidates with generally acceptable and manageable adverse effects. Further investigation on the anti-tumor mechanisms of HDIs and ongoing clinical trials will hopefully facilitate the application of HDIs in patients with DLBCL.
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Affiliation(s)
- Mingyang Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, People's Republic of China
| | - Xiaosheng Fang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, People's Republic of China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, People's Republic of China
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Yin Y, Liu H, Xiao T, Sun X, Yang K, Li Z. Synthesis and crystal structure of trifluoromethyl-containing bendamustine hydrochloride. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819868202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A simple strategy to afford trifluoromethyl-containing bendamustine hydrochloride in 34% overall via nine simple steps including substitution, selective reduction, N-acylation, cyclization, esterification, nitro-reduction, N-dihydroxyethylation, chlorination, and acid-catalyzed hydrolysis from commercially available 2,4-dinitrochlorobenzene is described. The structures of the intermediates and target product are established on the basis of infrared, nuclear magnetic resonance, and high resolution mass spectrometer. Moreover, the structure of target product is also confirmed by X-ray crystal analysis, and further studies indicate that the existence of intermolecular O–H···Cl and N–H···Cl hydrogen bonds are effective in stabilization of the crystal structure.
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Affiliation(s)
- Yue Yin
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
| | - Huailiang Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
| | - Tangxin Xiao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
| | - Ke Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
| | - Zhengyi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P.R. China
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Nachmias B, Shaulov A, Lavie D, Goldschmidt N, Gural A, Saban R, Lebel E, Gatt ME. Romidepsin-Bendamustine Combination for Relapsed/Refractory T Cell Lymphoma. Acta Haematol 2019; 141:216-221. [PMID: 30943470 DOI: 10.1159/000498905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/12/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND The treatment of relapsed/refractory (R/R) peripheral T cell lymphoma (PTCL) is limited to a few agents. Romidepsin, a histone deacetylase inhibitor, was approved for PTCL treatment as a single agent in the R/R setting, yet with partial efficacy. Several attempts to combine romidepsin with other chemotherapy regimens have been reported, however, with significant toxicity. OBJECTIVES To study the romidepsin-bendamustine combination in PTCL in an attempt to maximize efficacy while minimizing toxicity. METHODS We report on a series of 7 heavily pretreated PTCL patients (2-5 previous lines of therapy) treated with a romidepsin-bendamustine combination. RESULTS Four patients were not previously exposed to either drug. Of these, 2 achieved complete remission. Interestingly, 1 patient continued treatment with a prolonged progression-free survival of more than 4 years. Toxicity was minimal and no treatment-related deaths or discontinuation were noted. Significant nausea and vomiting were reported in over 50% of patients. Hematological toxicity was mild and lower than that reported for other romidepsin-chemotherapy combinations and was correlated with bone marrow involvement by lymphoma. CONCLUSIONS Although reporting a small number of patients, our data suggest that the combination of romidepsin and bendamustine may be a feasible therapeutic option in R/R PTCL patients and merits further study.
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Affiliation(s)
- Boaz Nachmias
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Adir Shaulov
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - David Lavie
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Neta Goldschmidt
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Alexander Gural
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Revital Saban
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Eyal Lebel
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel
| | - Moshe E Gatt
- Department of Hematology, Hadassah - Hebrew University Medical Center, Jerusalem, Israel,
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Pang JS, Li ZK, Lin P, Wang XD, Chen G, Yan HB, Li SH. The underlying molecular mechanism and potential drugs for treatment in papillary renal cell carcinoma: A study based on TCGA and Cmap datasets. Oncol Rep 2019; 41:2089-2102. [PMID: 30816528 PMCID: PMC6412146 DOI: 10.3892/or.2019.7014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 02/05/2019] [Indexed: 12/23/2022] Open
Abstract
Papillary renal cell carcinoma (PRCC) accounts for 15–20% of all kidney neoplasms and continually attracts attention due to the increase in the incidents in which it occurs. The molecular mechanism of PRCC remains unclear and the efficacy of drugs that treat PRCC lacks sufficient evidence in clinical trials. Therefore, it is necessary to investigate the underlying mechanism in the development of PRCC and identify additional potential anti-PRCC drugs for its treatment. The differently expressed genes (DEGs) of PRCC were identified, followed by Gene Ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses for functional annotation. Then, potential drugs for PRCC treatment were predicted by Connectivity Map (Cmap) based on DEGs. Furthermore, the latent function of query drugs in PRCC was explored by integrating drug-target, drug-pathway and drug-protein interactions. In total, 627 genes were screened as DEGs, and these DEGs were annotated using KEGG pathway analyses and were clearly associated with the complement and coagulation cascades, amongst others. Then, 60 candidate drugs, as predicted based on DEGs, were obtained from the Cmap database. Vorinostat was considered as the most promising drug for detailed discussion. Following protein-protein interaction (PPI) analysis and molecular docking, vorinostat was observed to interact with C3 and ANXN1 proteins, which are the upregulated hub genes and may serve as oncologic therapeutic targets in PRCC. Among the top 20 metabolic pathways, several significant pathways, such as complement and coagulation cascades and cell adhesion molecules, may greatly contribute to the development and progression of PRCC. Following the performance of the PPI network and molecular docking tests, vorinostat exhibited a considerable and promising application in PRCC treatment by targeting C3 and ANXN1.
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Affiliation(s)
- Jin-Shu Pang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhe-Kun Li
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Peng Lin
- Department of Medical Ultrasonics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiao-Dong Wang
- Department of Medical Ultrasonics, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Hai-Biao Yan
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Sheng-Hua Li
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Li Q, Huang J, Ou Y, Li Y, Wu Y. Progressive diffuse large B-cell lymphoma with TP53 gene mutation treated with chidamide-based chemotherapy. Immunotherapy 2019; 11:265-272. [PMID: 30606076 DOI: 10.2217/imt-2018-0083] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We attempted to explore novel treatment options for progressive diffuse large B-cell lymphoma (DLBCL) with TP53 mutation that has a poor response to rituximab-based immunochemotherapy. Herein, we report the case of a patient with DLBCL having TP53 mutation who showed progression following four cycles of rituximab-based immunochemotherapy but achieved sustained partial remission following chidamide-based chemotherapy. In vitro experiments performed using the DLBCL cell lines OCI-ly1 (LY1; mutant TP53), OCI-ly10 (LY10; wild-type TP53) and OCI-ly19 (LY19, wild-type TP53) demonstrated that chidamide is more potent against cells with mutant TP53 mutant than those with wild-type TP53. Moreover, chidamide can reduce the mRNA and protein expression levels of mutant TP53 and upregulate the surface expression of the CD20 antigen in lymphoma cells.
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Affiliation(s)
- Qing Li
- Department of Hematology & Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Jingcao Huang
- Department of Hematology & Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Yang Ou
- Department of Hematology & Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Yan Li
- Department of Hematology & Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Yu Wu
- Department of Hematology & Hematology Research Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
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Luo B, Gu YY, Wang XD, Chen G, Peng ZG. Identification of potential drugs for diffuse large b-cell lymphoma based on bioinformatics and Connectivity Map database. Pathol Res Pract 2018; 214:1854-1867. [PMID: 30244948 DOI: 10.1016/j.prp.2018.09.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/28/2018] [Accepted: 09/14/2018] [Indexed: 12/17/2022]
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most main subtype in non-Hodgkin lymphoma. After chemotherapy, about 30% of patients with DLBCL develop resistance and relapse. This study was to identify potential therapeutic drugs for DLBCL using the bioinformatics method. The differentially expressed genes (DEGs) between DLBCL and non-cancer samples were downloaded from the Cancer Genome Atlas (TCGA) and the Gene Expression Omnibus (GEO). Gene ontology enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of DEGs were analyzed using the Database for Annotation, Visualization, and Integrated Discovery. The R software package (SubpathwayMiner) was used to perform pathway analysis on DEGs affected by drugs found in the Connectivity Map (CMap) database. Protein-protein interaction (PPI) networks of DEGs were constructed using the Search Tool for the Retrieval of Interacting Genes online database and Cytoscape software. In order to identify potential novel drugs for DLBCL, the DLBCL-related pathways and drug-affected pathways were integrated. The results showed that 1927 DEGs were identified from TCGA and GEO. We found 54 significant pathways of DLBCL using KEGG pathway analysis. By integrating pathways, we identified five overlapping pathways and 47 drugs that affected these pathways. The PPI network analysis results showed that the CDK2 is closely associated with three overlapping pathways (cell cycle, p53 signaling pathway, and small cell lung cancer). The further literature verification results showed that etoposide, rinotecan, methotrexate, resveratrol, and irinotecan have been used as classic clinical drugs for DLBCL. Anisomycin, naproxen, gossypol, vorinostat, emetine, mycophenolic acid and daunorubicin also act on DLBCL. It was found through bioinformatics analysis that paclitaxel in the drug-pathway network can be used as a potential novel drug for DLBCL.
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Affiliation(s)
- Bin Luo
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, 530021, PR China
| | - Yong-Yao Gu
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, 530021, PR China
| | - Xiao-Dong Wang
- The Ultrasonics Division of Radiology Department, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, 530021, PR China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, 530021, PR China
| | - Zhi-Gang Peng
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, 530021, PR China.
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Qiu Y, Li Z, Copland JA, Mehrling T, Tun HW. Combined alkylation and histone deacetylase inhibition with EDO-S101 has significant therapeutic activity against brain tumors in preclinical models. Oncotarget 2018; 9:28155-28164. [PMID: 29963268 PMCID: PMC6021334 DOI: 10.18632/oncotarget.25588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 05/24/2018] [Indexed: 12/22/2022] Open
Abstract
There is a clear unmet need for novel therapeutic agents for management of primary and secondary brain tumors. Novel therapeutic agents with excellent central nervous system (CNS) penetration and therapeutic activity are urgently needed. EDO-S101 is a novel alkylating and histone deacetylase inhibiting agent created by covalent fusion of bendamustine and vorinostat. We used murine models to perform CNS pharmacokinetic analysis and preclinical therapeutic evaluation of EDO-S101 for CNS lymphoma, metastatic triple-negative breast cancer of the brain, and glioblastoma multiforme. EDO-S101 has excellent CNS penetration of 13.8% and 16.5% by intravenous infusion and bolus administration respectively. It shows promising therapeutic activity against CNS lymphoma, metastatic triple-negative breast cancer of the brain, and glioblastoma multiforme with significant prolongation of survival compared to no-treatment controls. Therapeutic activity was higher with IV infusion compared to IV bolus. It should be evaluated further for therapeutic use in brain tumors.
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Affiliation(s)
- Yushi Qiu
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Zhimin Li
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - John A Copland
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Han W Tun
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA.,Division of Hematology and Medical Oncology, Mayo Clinic, Jacksonville, FL 32224, USA
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López-Iglesias AA, Herrero AB, Chesi M, San-Segundo L, González-Méndez L, Hernández-García S, Misiewicz-Krzeminska I, Quwaider D, Martín-Sánchez M, Primo D, Paíno T, Bergsagel PL, Mehrling T, González-Díaz M, San-Miguel JF, Mateos MV, Gutiérrez NC, Garayoa M, Ocio EM. Preclinical anti-myeloma activity of EDO-S101, a new bendamustine-derived molecule with added HDACi activity, through potent DNA damage induction and impairment of DNA repair. J Hematol Oncol 2017. [PMID: 28633670 PMCID: PMC5477689 DOI: 10.1186/s13045-017-0495-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Despite recent advances in the treatment of multiple myeloma (MM), the prognosis of most patients remains poor, and resistance to traditional and new drugs frequently occurs. EDO-S101 is a novel therapeutic agent conceived as the fusion of a histone deacetylase inhibitor radical to bendamustine, with the aim of potentiating its alkylating activity. Methods The efficacy of EDO-S101 was evaluated in vitro, ex vivo and in vivo, alone, and in combination with standard anti-myeloma agents. The underlying mechanisms of action were also evaluated on MM cell lines, patient samples, and different murine models. Results EDO-S101 displayed potent activity in vitro in MM cell lines (IC50 1.6–4.8 μM) and ex vivo in cells isolated from MM patients, which was higher than that of bendamustine and independent of the p53 status and previous melphalan resistance. This activity was confirmed in vivo, in a CB17-SCID murine plasmacytoma model and in de novo Vk*MYC mice, leading to a significant survival improvement in both models. In addition, EDO-S101 was the only drug with single-agent activity in the multidrug resistant Vk12653 murine model. Attending to its mechanism of action, the molecule showed both, a HDACi effect (demonstrated by α-tubulin and histone hyperacetylation) and a DNA-damaging effect (shown by an increase in γH2AX); the latter being again clearly more potent than that of bendamustine. Using a reporter plasmid integrated into the genome of some MM cell lines, we demonstrate that, apart from inducing a potent DNA damage, EDO-S101 specifically inhibited the double strand break repair by the homologous recombination pathway. Moreover, EDO-S101 treatment reduced the recruitment of repair proteins such as RAD51 to DNA-damage sites identified as γH2AX foci. Finally, EDO-S101 preclinically synergized with bortezomib, both in vitro and in vivo. Conclusion These findings provide rationale for the clinical investigation of EDO-S101 in MM, either as a single agent or in combination with other anti-MM drugs, particularly proteasome inhibitors. Electronic supplementary material The online version of this article (doi:10.1186/s13045-017-0495-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ana-Alicia López-Iglesias
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Ana B Herrero
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Marta Chesi
- Comprehensive Cancer Center, Mayo Clinic, Arizona, USA
| | - Laura San-Segundo
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Lorena González-Méndez
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Susana Hernández-García
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | | | - Dalia Quwaider
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Montserrat Martín-Sánchez
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | | | - Teresa Paíno
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain.
| | | | | | - Marcos González-Díaz
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Jesús F San-Miguel
- Center for Applied Medical Research (CIMA), IDISNA, University Clinic of Navarra, Pamplona, Spain
| | - María-Victoria Mateos
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Norma C Gutiérrez
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Mercedes Garayoa
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
| | - Enrique M Ocio
- University Hospital of Salamanca (IBSAL) & Cancer Research Center (IBMCC-CSIC-USAL), Salamanca, Spain
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