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Portugal J. Mithramycin and its analogs: Molecular features and antitumor action. Pharmacol Ther 2024; 260:108672. [PMID: 38838821 DOI: 10.1016/j.pharmthera.2024.108672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/09/2024] [Accepted: 06/01/2024] [Indexed: 06/07/2024]
Abstract
The antitumor antibiotic mithramycin A (MTA) binds to G/C-rich DNA sequences in the presence of dications. MTA inhibits transcription regulated by the Sp1 transcription factor, often enhanced during tumor development. It shows antitumor activity, but its clinical use was discontinued due to toxic side effects. However, recent observations have led to its use being reconsidered. The MTA biosynthetic pathways have been modified to produce mithramycin analogs (mithralogs) that encompass lower toxicity and improved pharmacological activity. Some mithralogs reduce gene expression in human ovarian and prostate tumors, among other types of cancer. They down-regulate gene expression in various cellular processes, including Sp1-responsive genes that control tumor development. Moreover, MTA and several mithralogs, such as EC-8042 (DIG-MSK) and EC-8105, effectively treat Ewing sarcoma by inhibiting transcription controlled by the oncogenic EWS-FLI1 transcription factor.
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Affiliation(s)
- José Portugal
- Instituto de Diagnóstico Ambiental y Estudios del Agua, CSIC, E-08034 Barcelona, Spain.
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2
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Collins VJ, Ludwig KR, Nelson AE, Rajan SS, Yeung C, Vulikh K, Isanogle KA, Mendoza A, Difilippantonio S, Karim BO, Caplen NJ, Heske CM. Enhancing Standard of Care Chemotherapy Efficacy Using DNA-Dependent Protein Kinase (DNA-PK) Inhibition in Preclinical Models of Ewing Sarcoma. Mol Cancer Ther 2024; 23:1109-1123. [PMID: 38657228 PMCID: PMC11293986 DOI: 10.1158/1535-7163.mct-23-0641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/26/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024]
Abstract
Disruption of DNA damage repair via impaired homologous recombination is characteristic of Ewing sarcoma (EWS) cells. We hypothesize that this disruption results in increased reliance on nonhomologous end joining to repair DNA damage. In this study, we investigated if pharmacologic inhibition of the enzyme responsible for nonhomologous end joining, the DNA-PK holoenzyme, alters the response of EWS cells to genotoxic standard of care chemotherapy. We used analyses of cell viability and proliferation to investigate the effects of clinical DNA-PK inhibitors (DNA-PKi) in combination with six therapeutic or experimental agents for EWS. We performed calculations of synergy using the Loewe additivity model. Immunoblotting evaluated treatment effects on DNA-PK, DNA damage, and apoptosis. Flow cytometric analyses evaluated effects on cell cycle and fate. We used orthotopic xenograft models to interrogate tolerability, drug mechanism, and efficacy in vivo. DNA-PKi demonstrated on-target activity, reducing phosphorylated DNA-PK levels in EWS cells. DNA-PKi sensitized EWS cell lines to agents that function as topoisomerase 2 (TOP2) poisons and enhanced the DNA damage induced by TOP2 poisons. Nanomolar concentrations of single-agent TOP2 poisons induced G2M arrest and little apoptotic response while adding DNA-PKi-mediated apoptosis. In vivo, the combination of AZD7648 and etoposide had limited tolerability but resulted in enhanced DNA damage, apoptosis, and EWS tumor shrinkage. The combination of DNA-PKi with standard of care TOP2 poisons in EWS models is synergistic, enhances DNA damage and cell death, and may form the basis of a promising future therapeutic strategy for EWS.
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Affiliation(s)
- Victor J. Collins
- Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Katelyn R. Ludwig
- Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Ariana E. Nelson
- Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Soumya Sundara Rajan
- Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Choh Yeung
- Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Ksenia Vulikh
- Molecular Histopathology Lab, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Kristine A. Isanogle
- Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Arnulfo Mendoza
- Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Simone Difilippantonio
- Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Baktiar O. Karim
- Molecular Histopathology Lab, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Natasha J. Caplen
- Functional Genetics Section, Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Christine M. Heske
- Translational Sarcoma Biology Section, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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Patnam S, Majumder B, Joshi P, Singh AD, Nagalla B, Kumar D, Biswas M, Ranjan A, Majumder PK, Rengan AK, Kamath AV, Ray A, Manda SV. Differential Expression of SRY-Related HMG-Box Transcription Factor 2, Oligodendrocyte Lineage Transcription Factor 2, and Zinc Finger E-Box Binding Homeobox 1 in Serum-Derived Extracellular Vesicles: Implications for Mithramycin Sensitivity and Targeted Therapy in High-Grade Glioma. ACS Pharmacol Transl Sci 2024; 7:137-149. [PMID: 38230292 PMCID: PMC10789128 DOI: 10.1021/acsptsci.3c00198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/27/2023] [Accepted: 12/01/2023] [Indexed: 01/18/2024]
Abstract
Glioblastoma multiforme (GBM) is the most aggressive type of glioma and is often resistant to traditional therapies. Evidence suggests that glioma stem cells (GSCs) contribute to this resistance. Mithramycin (Mit-A) targets GSCs and exhibits antitumor activity in GBM by affecting transcriptional targets such as SRY-related HMG-box transcription factor 2 (SOX2), oligodendrocyte lineage transcription factor 2 (OLIG2), and zinc finger E-box binding homeobox 1 (ZEB1). However, its clinical use has been limited by toxicity. This study explored the diagnostic potential of serum extracellular vesicles (EVs) to identify Mit-A responders. Serum EVs were isolated from 70 glioma patients, and targeted gene expression was analyzed using qRT-PCR. Using chemosensitivity assay, we identified 8 Mit-A responders and 17 nonresponders among 25 glioma patients. The M-score showed a significant correlation (p = 0.045) with isocitrate dehydrogenase 1 mutation but not other clinical variables. The genes SOX2 (p = 0.005), OLIG2 (p = 0.003), and ZEB1 (p = 0.0281) were found to be upregulated in the responder EVs. SOX2 had the highest diagnostic potential (AUC = 0.875), followed by OLIG2 (AUC = 0.772) and ZEB1 (AUC = 0.632).The combined gene panel showed significant diagnostic efficacy (AUC = 0.956) through logistic regression analysis. The gene panel was further validated in the serum EVs of 45 glioma patients. These findings highlight the potential of Mit-A as a targeted therapy for high-grade glioma based on differential gene expression in serum EVs. The gene panel could serve as a diagnostic tool to predict Mit-A sensitivity, offering a promising approach for personalized treatment strategies and emphasizing the role of GSCs in therapeutic resistance.
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Affiliation(s)
- Sreekanth Patnam
- Apollo
Hospitals Educational and Research Foundation (AHERF), Hyderabad, Hyderabad, Telangana 500033, India
- Department
of Biomedical Engineering, Indian Institute
of Technology, Kandi, Hyderabad 502285, India
| | - Biswanath Majumder
- Farcast
Biosciences, Bangalore, Karnataka 560100, India
- Oncology
Division, Bugworks Research India Pvt. Ltd., C-CAMP, Bangalore, Karnataka 560065, India
| | - Parth Joshi
- Department
of Neurosurgery, Apollo Hospitals, Hyderabad, Telangana 500029, India
| | - Anula Divyash Singh
- Apollo
Hospitals Educational and Research Foundation (AHERF), Hyderabad, Hyderabad, Telangana 500033, India
- Department
of Biomedical Engineering, Indian Institute
of Technology, Kandi, Hyderabad 502285, India
| | - Balakrishna Nagalla
- Apollo
Institute of Medical Sciences and Research, Hyderabad, Telangana, Hyderabad 500090, India
| | - Dilli Kumar
- Farcast
Biosciences, Bangalore, Karnataka 560100, India
| | | | - Alok Ranjan
- Department
of Neurosurgery, Apollo Hospitals, Hyderabad, Telangana 500029, India
| | - Pradip K. Majumder
- Department
of Cancer Biology, Praesidia Biotherapeutics, 1167 Massachusetts Avenue, Arlington, Massachusetts 02476, United States
| | - Aravind Kumar Rengan
- Department
of Biomedical Engineering, Indian Institute
of Technology, Kandi, Hyderabad 502285, India
| | | | - Amitava Ray
- Department
of Neurosurgery, Apollo Hospitals, Hyderabad, Telangana 500029, India
- Exsegen
Genomics Research Pvt.Ltd, Hyderabad, Telangana 500033, India
| | - Sasidhar Venkata Manda
- Apollo
Hospitals Educational and Research Foundation (AHERF), Hyderabad, Hyderabad, Telangana 500033, India
- UrvogelBio
Private Ltd, Hyderabad, Telangana 500096, India
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Zhu Z, Guo Y, Liu Y, Ding R, Huang Z, Yu W, Cui L, Du P, Goel A, Liu C. ELK4 Promotes Colorectal Cancer Progression by Activating the Neoangiogenic Factor LRG1 in a Noncanonical SP1/3-Dependent Manner. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303378. [PMID: 37786278 PMCID: PMC10646254 DOI: 10.1002/advs.202303378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/08/2023] [Indexed: 10/04/2023]
Abstract
Although the MAPK/MEK/ERK pathway is prevalently activated in colorectal cancer (CRC), MEK/ERK inhibitors show limited efficiency in clinic. As a downstream target of MAPK, ELK4 is thought to work primarily by forming a complex with SRF. Whether ELK4 can serve as a potential therapeutic target is unclear and the transcriptional regulatory mechanism has not been systemically analyzed. Here, it is shown that ELK4 promotes CRC tumorigenesis. Integrated genomics- and proteomics-based approaches identified SP1 and SP3, instead of SRF, as cooperative functional partners of ELK4 at genome-wide level in CRC. Serum-induced phosphorylation of ELK4 by MAPKs facilitated its interaction with SP1/SP3. The pathological neoangiogenic factor LRG1 is identified as a direct target of the ELK4-SP1/SP3 complex. Furthermore, targeting the ELK4-SP1/SP3 complex by combination treatment with MEK/ERK inhibitor and the relatively specific SP1 inhibitor mithramycin A (MMA) elicited a synergistic antitumor effect on CRC. Clinically, ELK4 is a marker of poor prognosis in CRC. A 9-gene prognostic model based on the ELK4-SP1/3 complex-regulated gene set showed robust prognostic accuracy. The results demonstrate that ELK4 cooperates with SP1 and SP3 to transcriptionally regulate LRG1 to promote CRC tumorigenesis in an SRF-independent manner, identifying the ELK4-SP1/SP3 complex as a potential target for rational combination therapy.
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Affiliation(s)
- Zhehui Zhu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
- Department of General SurgeryState Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghai200438China
| | - Yuegui Guo
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Yun Liu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Rui Ding
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Zhenyu Huang
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Wei Yu
- Department of General SurgeryState Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghai200438China
| | - Long Cui
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Peng Du
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Ajay Goel
- Center for Gastrointestinal ResearchBaylor Scott & White Research Institute and Charles A. Sammons Cancer CenterBaylor University Medical CenterDepartment of Molecular Diagnostics and Experimental TherapeuticsBeckman Research Institute of City of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Chen‐Ying Liu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
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Finotti A, Gasparello J, Zuccato C, Cosenza LC, Fabbri E, Bianchi N, Gambari R. Effects of Mithramycin on BCL11A Gene Expression and on the Interaction of the BCL11A Transcriptional Complex to γ-Globin Gene Promoter Sequences. Genes (Basel) 2023; 14:1927. [PMID: 37895276 PMCID: PMC10606601 DOI: 10.3390/genes14101927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/28/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
The anticancer drug mithramycin (MTH), has been proposed for drug repurposing after the finding that it is a potent inducer of fetal hemoglobin (HbF) production in erythroid precursor cells (ErPCs) from β-thalassemia patients. In this respect, previously published studies indicate that MTH is very active in inducing increased expression of γ-globin genes in erythroid cells. This is clinically relevant, as it is firmly established that HbF induction is a valuable approach for the therapy of β-thalassemia and for ameliorating the clinical parameters of sickle-cell disease (SCD). Therefore, the identification of MTH biochemical/molecular targets is of great interest. This study is inspired by recent robust evidence indicating that the expression of γ-globin genes is controlled in adult erythroid cells by different transcriptional repressors, including Oct4, MYB, BCL11A, Sp1, KLF3 and others. Among these, BCL11A is very important. In the present paper we report evidence indicating that alterations of BCL11A gene expression and biological functions occur during MTH-mediated erythroid differentiation. Our study demonstrates that one of the mechanisms of action of MTH is a down-regulation of the transcription of the BCL11A gene, while a second mechanism of action is the inhibition of the molecular interactions between the BCL11A complex and specific sequences of the γ-globin gene promoter.
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Affiliation(s)
- Alessia Finotti
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
| | - Jessica Gasparello
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
| | - Cristina Zuccato
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
| | - Lucia Carmela Cosenza
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
| | - Enrica Fabbri
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
| | - Nicoletta Bianchi
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, Ferrara University, 44121 Ferrara, Italy; (J.G.); (C.Z.); (L.C.C.); (E.F.); (N.B.)
- Department of Translational Medicine and for Romagna, Ferrara University, 44121 Ferrara, Italy
| | - Roberto Gambari
- Center “Chiara Gemmo and Elio Zago” for the Research on Thalassemia, Ferrara University, 44121 Ferrara, Italy
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Legrand AJ, Choul-li S, Villeret V, Aumercier M. Poly(ADP-ribose) Polyremase-1 (PARP-1) Inhibition: A Promising Therapeutic Strategy for ETS-Expressing Tumours. Int J Mol Sci 2023; 24:13454. [PMID: 37686260 PMCID: PMC10487777 DOI: 10.3390/ijms241713454] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/17/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
ETS transcription factors are a highly conserved family of proteins involved in the progression of many cancers, such as breast and prostate carcinomas, Ewing's sarcoma, and leukaemias. This significant involvement can be explained by their roles at all stages of carcinogenesis progression. Generally, their expression in tumours is associated with a poor prognosis and an aggressive phenotype. Until now, no efficient therapeutic strategy had emerged to specifically target ETS-expressing tumours. Nevertheless, there is evidence that pharmacological inhibition of poly(ADP-ribose) polymerase-1 (PARP-1), a key DNA repair enzyme, specifically sensitises ETS-expressing cancer cells to DNA damage and limits tumour progression by leading some of the cancer cells to death. These effects result from a strong interplay between ETS transcription factors and the PARP-1 enzyme. This review summarises the existing knowledge of this molecular interaction and discusses the promising therapeutic applications.
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Affiliation(s)
- Arnaud J. Legrand
- CNRS, EMR9002 Integrative Structural Biology, F-59000 Lille, France; (A.J.L.); (V.V.)
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE-Risk Factors and Molecular Deter-minants of Aging-Related Diseases, F-59000 Lille, France
| | - Souhaila Choul-li
- Département de Biologie, Faculté des Sciences, Université Chouaib Doukkali, BP-20, El Jadida 24000, Morocco;
| | - Vincent Villeret
- CNRS, EMR9002 Integrative Structural Biology, F-59000 Lille, France; (A.J.L.); (V.V.)
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE-Risk Factors and Molecular Deter-minants of Aging-Related Diseases, F-59000 Lille, France
| | - Marc Aumercier
- CNRS, EMR9002 Integrative Structural Biology, F-59000 Lille, France; (A.J.L.); (V.V.)
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE-Risk Factors and Molecular Deter-minants of Aging-Related Diseases, F-59000 Lille, France
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Gong H, Xue B, Ru J, Pei G, Li Y. Targeted Therapy for EWS-FLI1 in Ewing Sarcoma. Cancers (Basel) 2023; 15:4035. [PMID: 37627063 PMCID: PMC10452796 DOI: 10.3390/cancers15164035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 08/05/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
Ewing sarcoma (EwS) is a rare and predominantly pediatric malignancy of bone and soft tissue in children and adolescents. Although international collaborations have greatly improved the prognosis of most EwS, the occurrence of macrometastases or relapse remains challenging. The prototypic oncogene EWS-FLI1 acts as an aberrant transcription factor that drives the cellular transformation of EwS. In addition to its involvement in RNA splicing and the DNA damage response, this chimeric protein directly binds to GGAA repeats, thereby modifying the transcriptional profile of EwS. Direct pharmacological targeting of EWS-FLI1 is difficult because of its intrinsically disordered structure. However, targeting the EWS-FLI1 protein complex or downstream pathways provides additional therapeutic options. This review describes the EWS-FLI1 protein partners and downstream pathways, as well as the related target therapies for the treatment of EwS.
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Affiliation(s)
- Helong Gong
- Department of Orthopaedic Surgery, Shengjing Hospital, China Medical University, No. 36 Sanhao Street, Heping District, Shenyang 110004, China;
| | - Busheng Xue
- Department of Hematology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China;
| | - Jinlong Ru
- Institute of Virology, Helmholtz Centre Munich, German Research Centre for Environmental Health, 85764 Neuherberg, Germany;
| | - Guoqing Pei
- Department of Orthopedics, Xijing Hospital, Air Force Medical University, Xi’an 710032, China;
| | - Yan Li
- Department of Orthopaedic Surgery, Shengjing Hospital, China Medical University, No. 36 Sanhao Street, Heping District, Shenyang 110004, China;
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Lin MY, Damron TA, Horton JA. Cell cycle arrest and apoptosis are early events in radiosensitization of EWS::FLI1 + Ewing sarcoma cells by Mithramycin A. Int J Radiat Biol 2023; 99:1570-1583. [PMID: 36913323 DOI: 10.1080/09553002.2023.2188930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 02/23/2023] [Indexed: 03/14/2023]
Abstract
PURPOSE The oncogenic fusion protein EWS::FLI1 is an attractive therapeutic target in Ewing sarcoma (ES). Mithramycin A (MithA) is a potent and specific inhibitor of EWS::FLI1 that can selectively radiosensitize ES cells through transcriptional inhibition of DNA double-strand break (DSB) repair. Here, we evaluate temporal changes in cell cycle progression and apoptosis in ES cells treated with MithA and/or ionizing radiation (RTx), testing the hypothesis that combining MithA with ionizing radiation would synergistically impair cell cycle progression and enhance apoptotic elimination to a greater extent than either agent alone. MATERIALS AND METHODS Four EWS::FLI1+ ES cell lines TC-71, RD-ES, SK-ES-1, and A673, and one EWS::ERG cell line (CHLA-25) were exposed to 10nM MithA or vehicle and followed 24 h later by exposure to 2 Gy x-radiation or sham irradiation. Reactive oxygen species (ROS) activity was evaluated by cytometric assay, and assay of antioxidant gene expression by RT-qPCR. Cell cycle changes were evaluated by flow cytometry of nuclei stained with propidium iodide. Apoptosis was assessed by cytometric assessment of Caspase-3/7 activity and by immunoblotting of PARP-1 cleavage. Radiosensitization was evaluated by clonogenic survival assay. Proliferation (EdU) and apoptosis (TUNEL) were evaluated in SK-ES-1 xenograft tumors following pretreatment with 1 mg/kg MithA, followed 24 h later by a single 4 Gy fraction of x-radiation. RESULTS MithA-treated cells showed reduced levels of ROS, and were associated with increased expression of antioxidant genes SOD1, SOD2, and CAT. It nonetheless induced persistent G0/G1 arrest and a progressive increase of the sub-G1 fraction, suggesting apoptotic degeneration. In vitro assays of Caspase-3/7 activity and immunoblotting of Caspase-3/7 dependent cleavage of PARP-1 indicated that apoptosis began as early as 24 h after MithA exposure, reducing clonogenic survival. Tumors from xenograft mice treated with either radiation alone, or in combination with MithA showed a significant reduction of tumor cell proliferation, while apoptosis was significantly increased in the group receiving the combination of MithA and RTx. CONCLUSIONS Taken together, our data show that the anti-proliferative and cytotoxic effects of MithA are the prominent components of radiosensitization of EWS::FLI1+ ES, rather than the result of acutely enhanced ROS levels.
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Affiliation(s)
- Mei Yun Lin
- Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY, USA
- Cell & Developmental Biology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Timothy A Damron
- Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY, USA
- Cell & Developmental Biology, SUNY Upstate Medical University, Syracuse, NY, USA
- Department of Radiation Oncology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Jason A Horton
- Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY, USA
- Cell & Developmental Biology, SUNY Upstate Medical University, Syracuse, NY, USA
- Department of Radiation Oncology, SUNY Upstate Medical University, Syracuse, NY, USA
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The addition of arginine deiminase potentiates Mithramycin A-induced cell death in patient-derived glioblastoma cells via ATF4 and cytochrome C. Cancer Cell Int 2023; 23:38. [PMID: 36843002 PMCID: PMC9969664 DOI: 10.1186/s12935-023-02873-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/14/2023] [Indexed: 02/28/2023] Open
Abstract
BACKGROUND Arginine auxotrophy constitutes a shortcoming for ~ 30% of glioblastoma multiforme (GBM). Indeed, arginine-depleting therapy using arginine deiminase from Streptococcus pyogenes (SpyADI) has proven activity against GBM in preclinical studies. The good safety profile of SpyADI renders this agent an ideal combination partner for cytostatic therapy. METHODS In this study, we combined the antineoplastic antibiotic Mithramycin A (MitA) with SpyADI to boost single-agent activity and analyzed underlying response mechanisms in-depth. RESULTS MitA monotherapy induced a time- and dose-dependent cytotoxicity in eight patient-derived GBM cell lines and had a radiosensitizing effect in all but one cell line. Combination treatment boosted the effects of the monotherapy in 2D- and 3D models. The simultaneous approach was superior to the sequential application and significantly impaired colony formation after repetitive treatment. MitA monotherapy significantly inhibited GBM invasiveness. However, this effect was not enhanced in the combination. Functional analysis identified SpyADI-triggered senescence induction accompanied by increased mitochondrial membrane polarization upon mono- and combination therapy. In HROG63, induction of lysosomes was seen after both monotherapies, indicative of autophagy. These cells seemed swollen and had a more pronounced cortically formed cytoskeleton. Also, cytochrome C and endoplasmatic reticulum-stress-associated proteins ATF4 and Calnexin were enhanced in the combination, contributing to apoptosis. Notably, no significant increases in glioma-stemness marker were seen. CONCLUSIONS Therapeutic utilization of a metabolic defect in GBM along with cytostatic therapy provides a novel combination approach. Whether this SpyADI/MitA regimen will provide a safe alternative to combat GBM, will have to be addressed in subsequent (pre-)clinical trials.
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Mucha B, Qie S, Bajpai S, Tarallo V, Diehl JN, Tedeschi F, Zhou G, Gao Z, Flashner S, Klein-Szanto AJ, Hibshoosh H, Masataka S, Chajewski OS, Majsterek I, Pytel D, Hatzoglou M, Der CJ, Nakagawa H, Bass AJ, Wong KK, Fuchs SY, Rustgi AK, Jankowsky E, Diehl JA. Tumor suppressor mediated ubiquitylation of hnRNPK is a barrier to oncogenic translation. Nat Commun 2022; 13:6614. [PMID: 36329064 PMCID: PMC9633729 DOI: 10.1038/s41467-022-34402-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
Heterogeneous Nuclear Ribonucleoprotein K (hnRNPK) is a multifunctional RNA binding protein (RBP) localized in the nucleus and the cytoplasm. Abnormal cytoplasmic enrichment observed in solid tumors often correlates with poor clinical outcome. The mechanism of cytoplasmic redistribution and ensuing functional role of cytoplasmic hnRNPK remain unclear. Here we demonstrate that the SCFFbxo4 E3 ubiquitin ligase restricts the pro-oncogenic activity of hnRNPK via K63 linked polyubiquitylation, thus limiting its ability to bind target mRNA. We identify SCFFbxo4-hnRNPK responsive mRNAs whose products regulate cellular processes including proliferation, migration, and invasion. Loss of SCFFbxo4 leads to enhanced cell invasion, migration, and tumor metastasis. C-Myc was identified as one target of SCFFbxo4-hnRNPK. Fbxo4 loss triggers hnRNPK-dependent increase in c-Myc translation, thereby contributing to tumorigenesis. Increased c-Myc positions SCFFbxo4-hnRNPK dysregulated cancers for potential therapeutic interventions that target c-Myc-dependence. This work demonstrates an essential role for limiting cytoplasmic hnRNPK function in order to maintain translational and cellular homeostasis.
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Affiliation(s)
- Bartosz Mucha
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Shuo Qie
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Sagar Bajpai
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Vincenzo Tarallo
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - J Nathaniel Diehl
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Frank Tedeschi
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
- Center for RNA Science and Therapeutics, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Gao Zhou
- Center for RNA Science and Therapeutics, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Zhaofeng Gao
- Department of Genetics and Genome Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH, 44016, USA
| | - Samuel Flashner
- Division of Hematology-Oncology, Department of Medicine, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | | | - Hanina Hibshoosh
- Division of Hematology-Oncology, Department of Medicine, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Shimonosono Masataka
- Division of Hematology-Oncology, Department of Medicine, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Olga S Chajewski
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Ireneusz Majsterek
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 60 Narutowicza St. 90-136, Lodz, Poland
| | - Dariusz Pytel
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 60 Narutowicza St. 90-136, Lodz, Poland
| | - Maria Hatzoglou
- Department of Genetics and Genome Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH, 44016, USA
| | - Channing J Der
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Hiroshi Nakagawa
- Division of Digestive and Liver Diseases, Department of Medicine, Herbert Irving Comprehensive Cancer Research Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Adam J Bass
- Division of Hematology-Oncology, Department of Medicine, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Kwok-Kin Wong
- Division of Hematology and Medical Oncology, Perlmutter Cancer Center, New York University, New York, NY, 10016, USA
| | - Serge Y Fuchs
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Anil K Rustgi
- Division of Digestive and Liver Diseases, Department of Medicine, Herbert Irving Comprehensive Cancer Research Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Eckhard Jankowsky
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
- Center for RNA Science and Therapeutics, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - J Alan Diehl
- Department of Biochemistry, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA.
- Center for RNA Science and Therapeutics, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA.
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, 44106, USA.
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11
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Maurya VK, Szwarc MM, Fernandez-Valdivia R, Lonard DM, Song Y, Joshi N, Fazleabas AT, Lydon JP. Early growth response 1 transcription factor is essential for the pathogenic properties of human endometriotic epithelial cells. Reproduction 2022; 164:41-54. [PMID: 35679138 PMCID: PMC9339520 DOI: 10.1530/rep-22-0123] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/09/2022] [Indexed: 01/13/2023]
Abstract
Although a non-malignant gynecological disorder, endometriosis displays some pathogenic features of malignancy, such as cell proliferation, migration, invasion and adaptation to hypoxia. Current treatments of endometriosis include pharmacotherapy and/or surgery, which are of limited efficacy and often associated with adverse side effects. Therefore, to develop more effective therapies to treat this disease, a broader understanding of the underlying molecular mechanisms that underpin endometriosis needs to be attained. Using immortalized human endometriotic epithelial and stromal cell lines, we demonstrate that the early growth response 1 (EGR1) transcription factor is essential for cell proliferation, migration and invasion, which represent some of the pathogenic properties of endometriotic cells. Genome-wide transcriptomics identified an EGR1-dependent transcriptome in human endometriotic epithelial cells that potentially encodes a diverse spectrum of proteins that are known to be involved in tissue pathologies. To underscore the utility of this transcriptomic data set, we demonstrate that carbonic anhydrase 9 (CA9), a homeostatic regulator of intracellular pH, is not only a molecular target of EGR1 but is also important for maintaining many of the cellular properties of human endometriotic epithelial cells that are also ascribed to EGR1. Considering therapeutic intervention strategies are actively being developed for EGR1 and CAIX in the treatment of other pathologies, we believe EGR1 and its transcriptome (which includes CA9) will offer not only a new conceptual framework to advance our understanding of endometriosis but will also furnish new molecular vulnerabilities to be leveraged as potential therapeutic options in the future treatment of endometriosis.
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Affiliation(s)
- Vineet K. Maurya
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Maria M. Szwarc
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
| | | | - David M. Lonard
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Yong Song
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, Michigan
| | - Niraj Joshi
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, Michigan
| | - Asgerally T. Fazleabas
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, Michigan
| | - John P. Lydon
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA,Correspondence should be addressed to JP Lydon;
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12
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Elucidating the importance and regulation of key enhancers for human MEIS1 expression. Leukemia 2022; 36:1980-1989. [PMID: 35624144 PMCID: PMC9343249 DOI: 10.1038/s41375-022-01602-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 11/20/2022]
Abstract
Myeloid ecotropic virus insertion site 1 (MEIS1) is essential for normal hematopoiesis and is a critical factor in the pathogenesis of a large subset of acute myeloid leukemia (AML). Despite the clinical relevance of MEIS1, its regulation is largely unknown. To understand the transcriptional regulatory mechanisms contributing to human MEIS1 expression, we created a knock-in green florescent protein (GFP) reporter system at the endogenous MEIS1 locus in a human AML cell line. Using this model, we have delineated and dissected a critical enhancer region of the MEIS1 locus for transcription factor (TF) binding through in silico prediction in combination with oligo pull-down, mass-spectrometry and knockout analysis leading to the identification of FLI1, an E-twenty-six (ETS) transcription factor, as an important regulator of MEIS1 transcription. We further show direct binding of FLI1 to the MEIS1 locus in human AML cell lines as well as enrichment of histone acetylation in MEIS1-high healthy and leukemic cells. We also observe a positive correlation between high FLI1 transcript levels and worse overall survival in AML patients. Our study expands the role of ETS factors in AML and our model constitutes a feasible tool for a more detailed understanding of transcriptional regulatory elements and their interactome.
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13
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Yoshimatsu Y, Noguchi R, Sin Y, Tsuchiya R, Ono T, Akiyama T, Nakagawa R, Kamio S, Hirabayashi K, Ozawa I, Kikuta K, Kondo T. Establishment and characterization of a novel patient-derived Ewing sarcoma cell line, NCC-ES2-C1. Hum Cell 2022; 35:1262-1269. [PMID: 35441357 DOI: 10.1007/s13577-022-00701-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 04/04/2022] [Indexed: 12/13/2022]
Abstract
Ewing sarcoma (ES) is a small round cell sarcoma that is characterized by the unique gene translocation EWSR1-FLI1. It is the second most common primary bone and soft tissue malignancy in children and adolescents. It constitutes 10-15% of all bone sarcomas and is highly aggressive and rapidly recurring. Although intensive treatments have improved the clinical outcome of ES patients, 20-25% of them exhibit metastases during diagnosis. Thus, the prognoses of these patients remain poor. Cell lines are pivotal resources to investigate the molecular background of disease progression and to develop novel therapeutic modalities. In this study, we established and characterized a novel ES cell line, NCC-ES2-C1. The presence of the EWSR1-FLI1 fusion gene in these cells was confirmed in the NCC-ES2-C1 cells. Furthermore, these cells exhibited constant proliferation, and invasion, but did not form tumors in mice. We screened the anti-tumor effects of 214 anti-cancer drugs in NCC-ES2-C1 cells and found that the drugs which effectively reduced the proliferation of NCC-ES2-C1 cells. We concluded that NCC-ES2-C1 cells are a useful resource to study functions of the EWSR1-FLI1 fusion gene, investigate phenotypic changes caused by genes and proteins, and evaluate the anti-tumor effects of novel drugs.
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Affiliation(s)
- Yuki Yoshimatsu
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Rei Noguchi
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Yooksil Sin
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Ryuto Tsuchiya
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Takuya Ono
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Taro Akiyama
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Rumi Nakagawa
- Division of Musculoskeletal Oncology and Orthopaedics Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Satoshi Kamio
- Division of Musculoskeletal Oncology and Orthopaedics Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Kaoru Hirabayashi
- Division of Diagnostic Pathology, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Iwao Ozawa
- Division of Hepato-Biliary-Pancreatic Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Kazutaka Kikuta
- Division of Musculoskeletal Oncology and Orthopaedics Surgery, Tochigi Cancer Center, 4-9-13 Yohnan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Tadashi Kondo
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
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14
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Lanzi C, Cassinelli G. Combinatorial strategies to potentiate the efficacy of HDAC inhibitors in fusion-positive sarcomas. Biochem Pharmacol 2022; 198:114944. [DOI: 10.1016/j.bcp.2022.114944] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/02/2022] [Accepted: 02/02/2022] [Indexed: 12/12/2022]
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15
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Mithramycin suppresses tumor growth by regulating CD47 and PD-L1 expression. Biochem Pharmacol 2021; 197:114894. [PMID: 34968486 DOI: 10.1016/j.bcp.2021.114894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 01/20/2023]
Abstract
Mithramycin A (MIT) has reacquired extensive research attention due to its anti-solid tumor activity and improved pharmacological production. Mechanismly, MIT was broadly used as a c-Myc inhibitor, and c-Myc regulated CD47 and PD-L1 expression which has been demonstrated. However, how MIT affects immune check-point molecules remains unknown. In this study, we found CD47 expression was higher in melanoma of pan-tissue array. MIT inhibited CD47 expression both in mRNA and protein level in melanoma cells (SK-MEL-28 and B16). MIT inhibited c-Myc, Sp-1 and CD47 expression in a concentration-dependent way. MIT inhibited the surface CD47 expression and promoted the phagocytosis of SK-MEL-28 cells by THP-1 cells. We found MIT inhibited tumor growth in melanoma allograft mice and CD47 expression in tumor mass. We also found MIT upregulated PD-L1 expression in cancer cells possibly via inhibiting PD-L1 ubiquitination, increasing ROS and IFN-γ. Combination of MIT and anti-PD-1 antibody showed enhanced antitumor activity compared to MIT and anti-PD-1 antibody alone in MC38 allograft mice. Using immune checkpoint array we found MIT inhibited expression of FasL and Galectin3. These results suggest that MIT inhibits CD47 expression, while improved PD-L1 expression. Furthermore, the combination of MIT and anti-PD-1 antibody exerts potent antitumor effect.
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16
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Robles AJ, Dai W, Haldar S, Ma H, Anderson VM, Overacker RD, Risinger AL, Loesgen S, Houghton PJ, Cichewicz RH, Mooberry SL. Altertoxin II, a Highly Effective and Specific Compound against Ewing Sarcoma. Cancers (Basel) 2021; 13:cancers13246176. [PMID: 34944795 PMCID: PMC8699301 DOI: 10.3390/cancers13246176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 11/16/2022] Open
Abstract
A screening program designed to identify natural products with selective cytotoxic effects against cell lines representing different types of pediatric solid tumors led to the identification of altertoxin II as a highly potent and selective cytotoxin against Ewing sarcoma cell lines. Altertoxin II, but not the related compounds altertoxin I and alteichin, was highly effective against every Ewing sarcoma cell line tested, with an average 25-fold selectivity for these cells as compared to cells representing other pediatric and adult cancers. Mechanism of action studies revealed that altertoxin II causes DNA double-strand breaks, a rapid DNA damage response, and cell cycle accumulation in the S phase. Our studies also demonstrate that the potent effects of altertoxin II are partially dependent on the progression through the cell cycle, because the G1 arrest initiated by a CDK4/6 inhibitor decreased antiproliferative potency more than 10 times. Importantly, the cell-type-selective DNA-damaging effects of altertoxin II in Ewing sarcoma cells occur independently of its ability to bind directly to DNA. Ultimately, we found that altertoxin II has a dose-dependent in vivo antitumor efficacy against a Ewing sarcoma xenograft, suggesting that it has potential as a therapeutic drug lead and will be useful to identify novel targets for Ewing-sarcoma-specific therapies.
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Affiliation(s)
- Andrew J. Robles
- Department of Pharmacology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; (A.J.R.); (A.L.R.)
- Mays Cancer Center, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA;
- Greehey Children’s Cancer Research Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Wentao Dai
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, and Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, OK 73019, USA; (W.D.); (S.H.); (H.M.); (V.M.A.)
| | - Saikat Haldar
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, and Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, OK 73019, USA; (W.D.); (S.H.); (H.M.); (V.M.A.)
| | - Hongyan Ma
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, and Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, OK 73019, USA; (W.D.); (S.H.); (H.M.); (V.M.A.)
| | - Victoria M. Anderson
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, and Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, OK 73019, USA; (W.D.); (S.H.); (H.M.); (V.M.A.)
| | - Ross D. Overacker
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA; (R.D.O.); (S.L.)
| | - April L. Risinger
- Department of Pharmacology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; (A.J.R.); (A.L.R.)
- Mays Cancer Center, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA;
| | - Sandra Loesgen
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA; (R.D.O.); (S.L.)
- Whitney Laboratory for Marine Bioscience, Department of Chemistry, University of Florida, St. Augustine, FL 32080, USA
| | - Peter J. Houghton
- Mays Cancer Center, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA;
- Greehey Children’s Cancer Research Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Robert H. Cichewicz
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, and Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, OK 73019, USA; (W.D.); (S.H.); (H.M.); (V.M.A.)
- Correspondence: (R.H.C.); (S.L.M.); Tel.: +1-405-325-6969 (R.H.C.); +1-210-567-4788 (S.L.M.); Fax: +1-405-325-6111 (R.H.C.); +1-210-567-4300 (S.L.M.)
| | - Susan L. Mooberry
- Department of Pharmacology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; (A.J.R.); (A.L.R.)
- Mays Cancer Center, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA;
- Correspondence: (R.H.C.); (S.L.M.); Tel.: +1-405-325-6969 (R.H.C.); +1-210-567-4788 (S.L.M.); Fax: +1-405-325-6111 (R.H.C.); +1-210-567-4300 (S.L.M.)
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17
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Flores G, Grohar PJ. One oncogene, several vulnerabilities: EWS/FLI targeted therapies for Ewing sarcoma. J Bone Oncol 2021; 31:100404. [PMID: 34976713 PMCID: PMC8686064 DOI: 10.1016/j.jbo.2021.100404] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/18/2021] [Accepted: 11/23/2021] [Indexed: 12/23/2022] Open
Abstract
EWS/FLI is the defining mutation of Ewing sarcoma. This oncogene drives malignant transformation and progression and occurs in a genetic background characterized by few other recurrent cooperating mutations. In addition, the tumor is absolutely dependent on the continued expression of EWS/FLI to maintain the malignant phenotype. However, EWS/FLI is a transcription factor and therefore a challenging drug target. The difficulty of directly targeting EWS/FLI stems from unique features of this fusion protein as well as the network of interacting proteins required to execute the transcriptional program. This network includes interacting proteins as well as upstream and downstream effectors that together reprogram the epigenome and transcriptome. While the vast number of proteins involved in this process challenge the development of a highly specific inhibitors, they also yield numerous therapeutic opportunities. In this report, we will review how this vast EWS-FLI transcriptional network has been exploited over the last two decades to identify compounds that directly target EWS/FLI and/or associated vulnerabilities.
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Affiliation(s)
- Guillermo Flores
- Van Andel Research Institute, Grand Rapids, MI, USA
- Michigan State University, College of Human Medicine, USA
| | - Patrick J Grohar
- Children's Hospital of Philadelphia, University of Pennsylvania, Perelman School of Medicine, 3501 Civic Center Blvd., Philadelphia, PA, USA
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18
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Estupiñán Ó, Niza E, Bravo I, Rey V, Tornín J, Gallego B, Clemente-Casares P, Moris F, Ocaña A, Blanco-Lorenzo V, Rodríguez-Santamaría M, Vallina-Álvarez A, González MV, Rodríguez A, Hermida-Merino D, Alonso-Moreno C, Rodríguez R. Mithramycin delivery systems to develop effective therapies in sarcomas. J Nanobiotechnology 2021; 19:267. [PMID: 34488783 PMCID: PMC8419920 DOI: 10.1186/s12951-021-01008-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 08/20/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sarcomas comprise a group of aggressive malignancies with very little treatment options beyond standard chemotherapy. Reposition of approved drugs represents an attractive approach to identify effective therapeutic compounds. One example is mithramycin (MTM), a natural antibiotic which has demonstrated a strong antitumour activity in several tumour types, including sarcomas. However, its widespread use in the clinic was limited by its poor toxicity profile. RESULTS In order to improve the therapeutic index of MTM, we have loaded MTM into newly developed nanocarrier formulations. First, polylactide (PLA) polymeric nanoparticles (NPs) were generated by nanoprecipitation. Also, liposomes (LIP) were prepared by ethanol injection and evaporation solvent method. Finally, MTM-loaded hydrogels (HG) were obtained by passive loading using a urea derivative non-peptidic hydrogelator. MTM-loaded NPs and LIP display optimal hydrodynamic radii between 80 and 105 nm with a very low polydispersity index (PdI) and encapsulation efficiencies (EE) of 92 and 30%, respectively. All formulations show a high stability and different release rates ranging from a fast release in HG (100% after 30 min) to more sustained release from NPs (100% after 24 h) and LIP (40% after 48 h). In vitro assays confirmed that all assayed MTM formulations retain the cytotoxic, anti-invasive and anti-stemness potential of free MTM in models of myxoid liposarcoma, undifferentiated pleomorphic sarcoma and chondrosarcoma. In addition, whole genome transcriptomic analysis evidenced the ability of MTM, both free and encapsulated, to act as a multi-repressor of several tumour-promoting pathways at once. Importantly, the treatment of mice bearing sarcoma xenografts showed that encapsulated MTM exhibited enhanced therapeutic effects and was better tolerated than free MTM. CONCLUSIONS Overall, these novel formulations may represent an efficient and safer MTM-delivering alternative for sarcoma treatment.
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Affiliation(s)
- Óscar Estupiñán
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain
| | - Enrique Niza
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain.,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain
| | - Iván Bravo
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain.,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain
| | - Verónica Rey
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain
| | - Juan Tornín
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,Materials Science and Engineering Department, Universitat Politècnica de Catalunya (UPC), Escola d'Enginyeria Barcelona Est (EEBE), 08019, Barcelona, Spain.,Institut de Recerca Sant Joan de Déu, 08034, Barcelona, Spain
| | - Borja Gallego
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Pilar Clemente-Casares
- Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain.,Centro Regional de Investigaciones Biomédicas (CRIB), UCLM, 02008, Albacete, Spain
| | | | - Alberto Ocaña
- CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.,Experimental Therapeutics Unit, Hospital Clínico San Carlos, IdISSC, 28040, Madrid, Spain
| | - Verónica Blanco-Lorenzo
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Servicio de Anatomía Patológica, Hospital Universitario Central de Asturias, 33011, Oviedo, Spain
| | - Mar Rodríguez-Santamaría
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Aitana Vallina-Álvarez
- Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,Servicio de Anatomía Patológica, Hospital Universitario Central de Asturias, 33011, Oviedo, Spain
| | - M Victoria González
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain.,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain.,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.,Departamento de Cirugía, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Aida Rodríguez
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, 38000, Grenoble, France
| | - Carlos Alonso-Moreno
- Centro Regional de Investigaciones Biomédicas, Unidad NanoCRIB, 02008, Albacete, Spain. .,Universidad de Castilla-La Mancha, Facultad de Farmacia de Albacete, 02008, Albacete, Spain.
| | - René Rodríguez
- Sarcomas and Experimental Therapeutics Laboratory, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias, Avenida de Roma, s/n, 33011, Oviedo, Spain. .,Instituto Universitario de Oncología del Principado de Asturias, 33011, Oviedo, Spain. .,CIBER en Oncología (CIBERONC), 28029, Madrid, Spain.
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19
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Angione SDA, Akalu AY, Gartrell J, Fletcher EP, Burckart GJ, Reaman GH, Leong R, Stewart CF. Fusion Oncoproteins in Childhood Cancers: Potential Role in Targeted Therapy. J Pediatr Pharmacol Ther 2021; 26:541-555. [PMID: 34421403 PMCID: PMC8372856 DOI: 10.5863/1551-6776-26.6.541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/03/2021] [Indexed: 11/11/2022]
Abstract
Cancer remains the leading cause of death from disease in children. Historically, in contrast to their adult counterparts, the causes of pediatric malignancies have remained largely unknown, with most pediatric cancers displaying low mutational burdens. Research related to molecular genetics in pediatric cancers is advancing our understanding of potential drivers of tumorigenesis and opening new opportunities for targeted therapies. One such area is fusion oncoproteins, which are a product of chromosomal rearrangements resulting in the fusion of different genes. They have been identified as oncogenic drivers in several sarcomas and leukemias. Continued advancement in the understanding of the biology of fusion oncoproteins will contribute to the discovery and development of new therapies for childhood cancers. Here we review the current scientific knowledge on fusion oncoproteins, focusing on pediatric sarcomas and hematologic cancers, and highlight the challenges and current efforts in developing drugs to target fusion oncoproteins.
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20
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Cervera ST, Rodríguez-Martín C, Fernández-Tabanera E, Melero-Fernández de Mera RM, Morin M, Fernández-Peñalver S, Iranzo-Martínez M, Amhih-Cardenas J, García-García L, González-González L, Moreno-Pelayo MA, Alonso J. Therapeutic Potential of EWSR1-FLI1 Inactivation by CRISPR/Cas9 in Ewing Sarcoma. Cancers (Basel) 2021; 13:cancers13153783. [PMID: 34359682 PMCID: PMC8345183 DOI: 10.3390/cancers13153783] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/13/2021] [Accepted: 07/23/2021] [Indexed: 01/14/2023] Open
Abstract
Simple Summary Ewing sarcoma is an aggressive tumor with still unacceptable survival rates, particularly in patients with metastatic disease and for which it is necessary to develop new and innovative therapies. These tumors are characterized by the presence of chromosomal translocations that give rise to chimeric transcription factors (i.e., EWSR1–FLI1) that govern the oncogenic process. In this article, we describe an efficient strategy to permanently inactivate the EWSR1–FLI1 oncogene characteristic of Ewing sarcoma using CRISPR/Cas9 gene editing technology. Although the application of gene therapy in cancer still has many limitations, for example, the strategy for delivery, studies like ours show that gene therapy can be a promising alternative, particularly for those tumors that are highly dependent on a particular oncogene as is the case in Ewing sarcoma. Abstract Ewing sarcoma is an aggressive bone cancer affecting children and young adults. The main molecular hallmark of Ewing sarcoma are chromosomal translocations that produce chimeric oncogenic transcription factors, the most frequent of which is the aberrant transcription factor EWSR1–FLI1. Because this is the principal oncogenic driver of Ewing sarcoma, its inactivation should be the best therapeutic strategy to block tumor growth. In this study, we genetically inactivated EWSR1–FLI1 using CRISPR-Cas9 technology in order to cause permanent gene inactivation. We found that gene editing at the exon 9 of FLI1 was able to block cell proliferation drastically and induce senescence massively in the well-studied Ewing sarcoma cell line A673. In comparison with an extensively used cellular model of EWSR1–FLI1 knockdown (A673/TR/shEF), genetic inactivation was more effective, particularly in its capability to block cell proliferation. In summary, genetic inactivation of EWSR1–FLI1 in A673 Ewing sarcoma cells blocks cell proliferation and induces a senescence phenotype that could be exploited therapeutically. Although efficient and specific in vivo CRISPR-Cas9 editing still presents many challenges today, our data suggest that complete inactivation of EWSR1–FLI1 at the cell level should be considered a therapeutic approach to develop in the future.
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Affiliation(s)
- Saint T. Cervera
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Carlos Rodríguez-Martín
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Enrique Fernández-Tabanera
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Raquel M. Melero-Fernández de Mera
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Matias Morin
- Servicio de Genética, Hospital Universitario Ramón y Cajal, IRYCIS, Carretera de Colmenar km 9.100, 28034 Madrid, Spain; (M.M.); (S.F.-P.); (M.A.M.-P.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/0048; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Sergio Fernández-Peñalver
- Servicio de Genética, Hospital Universitario Ramón y Cajal, IRYCIS, Carretera de Colmenar km 9.100, 28034 Madrid, Spain; (M.M.); (S.F.-P.); (M.A.M.-P.)
| | - Maria Iranzo-Martínez
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
| | - Jorge Amhih-Cardenas
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
| | - Laura García-García
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
| | - Laura González-González
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
| | - Miguel Angel Moreno-Pelayo
- Servicio de Genética, Hospital Universitario Ramón y Cajal, IRYCIS, Carretera de Colmenar km 9.100, 28034 Madrid, Spain; (M.M.); (S.F.-P.); (M.A.M.-P.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/0048; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Javier Alonso
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain; (S.T.C.); (C.R.-M.); (E.F.-T.); (R.M.M.-F.d.M.); (M.I.-M.); (J.A.-C.); (L.G.-G.); (L.G.-G.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
- Correspondence:
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21
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Hassanzadeh P, Arbabi E, Rostami F. Development of a novel nanoformulation against the colorectal cancer. Life Sci 2021; 281:119772. [PMID: 34186049 DOI: 10.1016/j.lfs.2021.119772] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/13/2021] [Accepted: 06/21/2021] [Indexed: 12/17/2022]
Abstract
Colorectal cancer (CRC) with high metastasis rates has been known as a major cause of death worldwide. Lack of the specificity and insufficient concentrations of traditional chemotherapeutics at tumor site and their severe adverse effects necessitate development of new treatment strategies such as designing suitable nanocarriers for delivery of drugs, improving their pharmacological profiles and reducing adverse effects. We have developed a platform based on the poly-ursolic acid (poly-UA), a polymeric system with potential anticancer effect. Following the self-assembly of poly-UA into the nanoparticles (NPs), they were applied for delivery of mithramycin A (Mith-A), a promising candidate for CRC therapy, however, with some limitations such as rapid clearance and serious side effects. Mith-A-loaded poly-UA NPs with suitable physicochemical properties and efficient drug entrapment, released Mith-A in a controlled manner and provided suitable toxicity against the CT-26 colorectal cancer cells, increased accumulation in tumor, and protection against the detrimental features of the disease. Poly-UA NPs demonstrated therapeutic efficiency (in vivo and in vitro) by themselves. The prepared NPs induced no remarkable alteration of body weights or damages to the major organs in animals bearing tumor indicating the safety of NPs. The bioactive nanoformulation along with improving the pharmacological profile of Mith-A could provide a synergistic toxicity against the CRC.
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Affiliation(s)
- Parichehr Hassanzadeh
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 13169-43551, Iran; Sasan Hospital, Tehran, Iran.
| | - Elham Arbabi
- Research Center for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Rostami
- Research Center for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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22
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Li Y, Lu W, Yang J, Edwards M, Jiang S. Survivin as a biological biomarker for diagnosis and therapy. Expert Opin Biol Ther 2021; 21:1429-1441. [PMID: 33877952 DOI: 10.1080/14712598.2021.1918672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Survivin (SVN) is a member of the inhibitor of apoptosis (IAP) protein family that promotes cellular proliferation and inhibits apoptosis. Overexpression of SVN is associated with autoimmune disease, hyperplasia, and tumors and can be used as a biomarker in these diseases. SVN is widely recognized as a tumor-associated antigen (TAA) and has become an important target for cancer diagnosis and treatment.Areas covered: We reviewed SVN research progress from the PubMed and clinical trials focused on SVN from https://clinicaltrials.gov since 2000 and anticipate future developments in the field. The trials reviewed cover various modalities including diagnostics for early detection and disease progression, small molecule inhibitors of the SVN pathway and immunotherapy targeting SVN epitopes.Expert opinion: The most promising developments involve anti-SVN immunotherapy, with several therapeutic SVN vaccines under evaluation in phase I/II trials. SVN is an important new immune-oncology target that expands the repertoire of individualized combination treatments for cancer.
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Affiliation(s)
- Yuming Li
- Department of Oncology, University of Oxford, Oxford, UK.,School of Life Sciences, Tsinghua University, Beijing, China
| | - Wenshu Lu
- Department of Oncology, University of Oxford, Oxford, UK
| | - Jiarun Yang
- Department of Oncology, University of Oxford, Oxford, UK
| | - Mark Edwards
- Department of Research and Development, Oxford Vacmedix UK Ltd, Oxford, UK
| | - Shisong Jiang
- Department of Oncology, University of Oxford, Oxford, UK.,Department of Research and Development, Oxford Vacmedix UK Ltd, Oxford, UK
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23
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Insight into mithramycin disruption of ETS transcription leads to improved understanding of more selective analogs. Structure 2021; 29:401-403. [PMID: 33961789 DOI: 10.1016/j.str.2021.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fusion products with the ETS family of transcription factors play critical roles in the etiology of several cancers. In this issue of Structure, Hou et al. (2020) provide insight into allosteric mechanisms by which mithramycin and its analogs perturb protein-DNA interactions in higher-order complexes at a DNA enhancer site.
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24
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Mohan CD, Rangappa S, Nayak SC, Jadimurthy R, Wang L, Sethi G, Garg M, Rangappa KS. Bacteria as a treasure house of secondary metabolites with anticancer potential. Semin Cancer Biol 2021; 86:998-1013. [PMID: 33979675 DOI: 10.1016/j.semcancer.2021.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 05/03/2021] [Accepted: 05/03/2021] [Indexed: 12/27/2022]
Abstract
Cancer stands in the frontline among leading killers worldwide and the annual mortality rate is expected to reach 16.4 million by 2040. Humans suffer from about 200 different types of cancers and many of them have a small number of approved therapeutic agents. Moreover, several types of major cancers are diagnosed at advanced stages as a result of which the existing therapies have limited efficacy against them and contribute to a dismal prognosis. Therefore, it is essential to develop novel potent anticancer agents to counteract cancer-driven lethality. Natural sources such as bacteria, plants, fungi, and marine microorganisms have been serving as an inexhaustible source of anticancer agents. Notably, over 13,000 natural compounds endowed with different pharmacological properties have been isolated from different bacterial sources. In the present article, we have discussed about the importance of natural products, with special emphasis on bacterial metabolites for cancer therapy. Subsequently, we have comprehensively discussed the various sources, mechanisms of action, toxicity issues, and off-target effects of clinically used anticancer drugs (such as actinomycin D, bleomycin, carfilzomib, doxorubicin, ixabepilone, mitomycin C, pentostatin, rapalogs, and romidepsin) that have been derived from different bacteria. Furthermore, we have also discussed some of the major secondary metabolites (antimycins, chartreusin, elsamicins, geldanamycin, monensin, plicamycin, prodigiosin, rebeccamycin, salinomycin, and salinosporamide) that are currently in the clinical trials or which have demonstrated potent anticancer activity in preclinical models. Besides, we have elaborated on the application of metagenomics in drug discovery and briefly described about anticancer agents (bryostatin 1 and ET-743) identified through the metagenomics approach.
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Affiliation(s)
| | - Shobith Rangappa
- Adichunchanagiri Institute for Molecular Medicine, Adichunchanagiri University, BG Nagara, 571448, Nagamangala Taluk, India
| | - S Chandra Nayak
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore, 570006, India
| | - Ragi Jadimurthy
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore, 570006, India
| | - Lingzhi Wang
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Manoj Garg
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University, Uttar Pradesh, Noida, 201313, India
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25
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Zöllner SK, Amatruda JF, Bauer S, Collaud S, de Álava E, DuBois SG, Hardes J, Hartmann W, Kovar H, Metzler M, Shulman DS, Streitbürger A, Timmermann B, Toretsky JA, Uhlenbruch Y, Vieth V, Grünewald TGP, Dirksen U. Ewing Sarcoma-Diagnosis, Treatment, Clinical Challenges and Future Perspectives. J Clin Med 2021; 10:1685. [PMID: 33919988 PMCID: PMC8071040 DOI: 10.3390/jcm10081685] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 02/08/2023] Open
Abstract
Ewing sarcoma, a highly aggressive bone and soft-tissue cancer, is considered a prime example of the paradigms of a translocation-positive sarcoma: a genetically rather simple disease with a specific and neomorphic-potential therapeutic target, whose oncogenic role was irrefutably defined decades ago. This is a disease that by definition has micrometastatic disease at diagnosis and a dismal prognosis for patients with macrometastatic or recurrent disease. International collaborations have defined the current standard of care in prospective studies, delivering multiple cycles of systemic therapy combined with local treatment; both are associated with significant morbidity that may result in strong psychological and physical burden for survivors. Nevertheless, the combination of non-directed chemotherapeutics and ever-evolving local modalities nowadays achieve a realistic chance of cure for the majority of patients with Ewing sarcoma. In this review, we focus on the current standard of diagnosis and treatment while attempting to answer some of the most pressing questions in clinical practice. In addition, this review provides scientific answers to clinical phenomena and occasionally defines the resulting translational studies needed to overcome the hurdle of treatment-associated morbidities and, most importantly, non-survival.
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Affiliation(s)
- Stefan K. Zöllner
- Pediatrics III, University Hospital Essen, 45147 Essen, Germany;
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
| | - James F. Amatruda
- Cancer and Blood Disease Institute, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA;
| | - Sebastian Bauer
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
- Department of Medical Oncology, Sarcoma Center, University Hospital Essen, 45147 Essen, Germany
| | - Stéphane Collaud
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
- Department of Thoracic Surgery, Ruhrlandklinik, University of Essen-Duisburg, 45239 Essen, Germany
| | - Enrique de Álava
- Institute of Biomedicine of Sevilla (IbiS), Virgen del Rocio University Hospital, CSIC, University of Sevilla, CIBERONC, 41013 Seville, Spain;
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Steven G. DuBois
- Dana-Farber/Boston Children’s Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA 02215, USA; (S.G.D.); (D.S.S.)
| | - Jendrik Hardes
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
- Department of Musculoskeletal Oncology, Sarcoma Center, 45147 Essen, Germany
| | - Wolfgang Hartmann
- Division of Translational Pathology, Gerhard-Domagk Institute of Pathology, University Hospital Münster, 48149 Münster, Germany;
- West German Cancer Center (WTZ), Network Partner Site, University Hospital Münster, 48149 Münster, Germany
| | - Heinrich Kovar
- St. Anna Children’s Cancer Research Institute and Medical University Vienna, 1090 Vienna, Austria;
| | - Markus Metzler
- Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, 91054 Erlangen, Germany;
| | - David S. Shulman
- Dana-Farber/Boston Children’s Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA 02215, USA; (S.G.D.); (D.S.S.)
| | - Arne Streitbürger
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
- Department of Musculoskeletal Oncology, Sarcoma Center, 45147 Essen, Germany
| | - Beate Timmermann
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
- Department of Particle Therapy, University Hospital Essen, West German Proton Therapy Centre, 45147 Essen, Germany
| | - Jeffrey A. Toretsky
- Departments of Oncology and Pediatrics, Georgetown University, Washington, DC 20057, USA;
| | - Yasmin Uhlenbruch
- St. Josefs Hospital Bochum, University Hospital, 44791 Bochum, Germany;
| | - Volker Vieth
- Department of Radiology, Klinikum Ibbenbüren, 49477 Ibbenbühren, Germany;
| | - Thomas G. P. Grünewald
- Division of Translational Pediatric Sarcoma Research, Hopp-Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany;
- Division of Translational Pediatric Sarcoma Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), Core Center, 69120 Heidelberg, Germany
| | - Uta Dirksen
- Pediatrics III, University Hospital Essen, 45147 Essen, Germany;
- West German Cancer Center (WTZ), University Hospital Essen, 45147 Essen, Germany; (S.B.); (S.C.); (J.H.); (A.S.); (B.T.)
- German Cancer Consortium (DKTK), Essen/Düsseldorf, University Hospital Essen, 45147 Essen, Germany
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Estupiñán Ó, Rendueles C, Suárez P, Rey V, Murillo D, Morís F, Gutiérrez G, Blanco-López MDC, Matos M, Rodríguez R. Nano-Encapsulation of Mithramycin in Transfersomes and Polymeric Micelles for the Treatment of Sarcomas. J Clin Med 2021; 10:jcm10071358. [PMID: 33806182 PMCID: PMC8037461 DOI: 10.3390/jcm10071358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/13/2021] [Accepted: 03/22/2021] [Indexed: 02/06/2023] Open
Abstract
Sarcomas are aggressive tumors which often show a poor response to current treatments. As a promising therapeutic alternative, we focused on mithramycin (MTM), a natural antibiotic with a promising anti-tumor activity but also a relevant systemic toxicity. Therefore, the encapsulation of MTM in nano-delivery systems may represent a way to increase its therapeutic window. Here, we designed novel transfersomes and PLGA polymeric micelles by combining different membrane components (phosphatidylcholine, Span 60, Tween 20 and cholesterol) to optimize the nanoparticle size, polydispersity index (PDI) and encapsulation efficiency (EE). Using both thin film hydration and the ethanol injection methods we obtained MTM-loaded transferosomes displaying an optimal hydrodynamic diameter of 100–130 nm and EE values higher than 50%. Additionally, we used the emulsion/solvent evaporation method to synthesize polymeric micelles with a mean size of 228 nm and a narrow PDI, capable of encapsulating MTM with EE values up to 87%. These MTM nano-delivery systems mimicked the potent anti-tumor activity of free MTM, both in adherent and cancer stem cell-enriched tumorsphere cultures of myxoid liposarcoma and chondrosarcoma models. Similarly to free MTM, nanocarrier-delivered MTM efficiently inhibits the signaling mediated by the pro-oncogenic factor SP1. In summary, we provide new formulations for the efficient encapsulation of MTM which may constitute a safer delivering alternative to be explored in future clinical uses.
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Affiliation(s)
- Óscar Estupiñán
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)—Hospital Universitario Central de Asturias, 33011 Oviedo, Spain; (Ó.E.); (V.R.); (D.M.)
- Instituto Universitario de Oncología del Principado de Asturias, 33006 Oviedo, Spain
- CIBER en Oncología (CIBERONC), 28029 Madrid, Spain
- Department of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, Spain; (C.R.); (P.S.); (G.G.)
| | - Claudia Rendueles
- Department of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, Spain; (C.R.); (P.S.); (G.G.)
| | - Paula Suárez
- Department of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, Spain; (C.R.); (P.S.); (G.G.)
| | - Verónica Rey
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)—Hospital Universitario Central de Asturias, 33011 Oviedo, Spain; (Ó.E.); (V.R.); (D.M.)
- Instituto Universitario de Oncología del Principado de Asturias, 33006 Oviedo, Spain
| | - Dzohara Murillo
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)—Hospital Universitario Central de Asturias, 33011 Oviedo, Spain; (Ó.E.); (V.R.); (D.M.)
| | | | - Gemma Gutiérrez
- Department of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, Spain; (C.R.); (P.S.); (G.G.)
- Asturias University Institute of Biotechnology, University of Oviedo, 33006 Oviedo, Spain;
| | - María del Carmen Blanco-López
- Asturias University Institute of Biotechnology, University of Oviedo, 33006 Oviedo, Spain;
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
| | - María Matos
- Department of Chemical and Environmental Engineering, University of Oviedo, 33006 Oviedo, Spain; (C.R.); (P.S.); (G.G.)
- Asturias University Institute of Biotechnology, University of Oviedo, 33006 Oviedo, Spain;
- Correspondence: (M.M.); (R.R.)
| | - René Rodríguez
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)—Hospital Universitario Central de Asturias, 33011 Oviedo, Spain; (Ó.E.); (V.R.); (D.M.)
- Instituto Universitario de Oncología del Principado de Asturias, 33006 Oviedo, Spain
- CIBER en Oncología (CIBERONC), 28029 Madrid, Spain
- Correspondence: (M.M.); (R.R.)
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Hervieu C, Christou N, Battu S, Mathonnet M. The Role of Cancer Stem Cells in Colorectal Cancer: From the Basics to Novel Clinical Trials. Cancers (Basel) 2021; 13:1092. [PMID: 33806312 PMCID: PMC7961892 DOI: 10.3390/cancers13051092] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/23/2021] [Accepted: 02/27/2021] [Indexed: 02/06/2023] Open
Abstract
The treatment options available for colorectal cancer (CRC) have increased over the years and have significantly improved the overall survival of CRC patients. However, the response rate for CRC patients with metastatic disease remains low and decreases with subsequent lines of therapy. The clinical management of patients with metastatic CRC (mCRC) presents a unique challenge in balancing the benefits and harms while considering disease progression, treatment-related toxicities, drug resistance and the patient's overall quality of life. Despite the initial success of therapy, the development of drug resistance can lead to therapy failure and relapse in cancer patients, which can be attributed to the cancer stem cells (CSCs). Thus, colorectal CSCs (CCSCs) contribute to therapy resistance but also to tumor initiation and metastasis development, making them attractive potential targets for the treatment of CRC. This review presents the available CCSC isolation methods, the clinical relevance of these CCSCs, the mechanisms of drug resistance associated with CCSCs and the ongoing clinical trials targeting these CCSCs. Novel therapeutic strategies are needed to effectively eradicate both tumor growth and metastasis, while taking into account the tumor microenvironment (TME) which plays a key role in tumor cell plasticity.
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Affiliation(s)
- Céline Hervieu
- EA 3842 CAPTuR “Control of Cell Activation in Tumor Progression and Therapeutic Resistance”, Faculty of Medicine, Genomics, Environment, Immunity, Health and Therapeutics (GEIST) Institute, University of Limoges, 87025 Limoges CEDEX, France; (C.H.); (N.C.); (S.B.)
| | - Niki Christou
- EA 3842 CAPTuR “Control of Cell Activation in Tumor Progression and Therapeutic Resistance”, Faculty of Medicine, Genomics, Environment, Immunity, Health and Therapeutics (GEIST) Institute, University of Limoges, 87025 Limoges CEDEX, France; (C.H.); (N.C.); (S.B.)
- Department of General, Endocrine and Digestive Surgery, University Hospital of Limoges, 87025 Limoges CEDEX, France
| | - Serge Battu
- EA 3842 CAPTuR “Control of Cell Activation in Tumor Progression and Therapeutic Resistance”, Faculty of Medicine, Genomics, Environment, Immunity, Health and Therapeutics (GEIST) Institute, University of Limoges, 87025 Limoges CEDEX, France; (C.H.); (N.C.); (S.B.)
| | - Muriel Mathonnet
- EA 3842 CAPTuR “Control of Cell Activation in Tumor Progression and Therapeutic Resistance”, Faculty of Medicine, Genomics, Environment, Immunity, Health and Therapeutics (GEIST) Institute, University of Limoges, 87025 Limoges CEDEX, France; (C.H.); (N.C.); (S.B.)
- Department of General, Endocrine and Digestive Surgery, University Hospital of Limoges, 87025 Limoges CEDEX, France
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Felix A, Berlanga P, Toulmonde M, Landman‐Parker J, Dumont S, Vassal G, Le Deley M, Gaspar N. Systematic review of phase-I/II trials enrolling refractory and recurrent Ewing sarcoma: Actual knowledge and future directions to optimize the research. Cancer Med 2021; 10:1589-1604. [PMID: 33452711 PMCID: PMC7940237 DOI: 10.1002/cam4.3712] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Optimal Phase-II design to evaluate new therapies in refractory/relapsed Ewing sarcomas (ES) remains imperfectly defined. OBJECTIVES Recurrent/refractory ES phase-I/II trials analysis to improve trials design. METHODS Comprehensive review of therapeutic trials registered on five databases (who.int/trialsearch, clinicaltrials.gov, clinicaltrialsregister.eu, e-cancer.fr, and umin.ac.jp) and/or published in PubMed/ASCO/ESMO websites, between 2005 and 2018, using the criterion: (Ewing sarcoma OR bone sarcoma OR sarcoma) AND (Phase-I or Phase-II). RESULTS The 146 trials identified (77 phase-I/II, 67 phase-II, and 2 phase-II/III) tested targeted (34%), chemo- (23%), immune therapies (19%), or combined therapies (24%). Twenty-three trials were ES specific and 48 had a specific ES stratum. Usually multicentric (88%), few trials were international (30%). Inclusion criteria cover the recurrent ES age range for only 12% of trials and allowed only accrual of measurable diseases (RECIST criteria). Single-arm design was the most frequent (88%) testing mainly single drugs (61%), only 5% were randomized. Primary efficacy outcome was response rate (RR=CR+PR; Complete+Partial response) (n = 116/146; 79%), rarely progression-free or overall survival (16% PFS and 3% OS). H0 and H1 hypotheses were variable (3%-25% and 20%-50%, respectively). The 62 published trials enrolled 827 ES patients. RR was poor (10%; 15 CR=1.7%, 68 PR=8.3%). Stable disease was the best response for 186 patients (25%). Median PFS/OS was of 1.9 (range 1.3-14.7) and 7.6 months (5-30), respectively. Eleven (18%) published trials were considered positive, with median RR/PFS/OS of 15% (7%-30%), 4.5 (1.3-10), and 16.6 months (6.9-30), respectively. CONCLUSION This review supports the need to develop the international randomized phase-II trials across all age ranges with PFS as primary endpoint.
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Affiliation(s)
- Arthur Felix
- Department of Oncology for Child and AdolescentGustave Roussy Cancer CampusVillejuif cedexFrance
| | - Pablo Berlanga
- Department of Oncology for Child and AdolescentGustave Roussy Cancer CampusVillejuif cedexFrance
| | - Maud Toulmonde
- Medical Oncology DepartmentInstitut BergoniéBordeauxFrance
| | | | - Sarah Dumont
- Department of Medical OncologyGustave Roussy Cancer CampusVillejuifFrance
| | - Gilles Vassal
- Department of Oncology for Child and AdolescentGustave Roussy Cancer CampusVillejuif cedexFrance
| | - Marie‐Cécile Le Deley
- Direction de la Recherche Clinique et de l'InnovationCentre Oscar LambretLilleFrance
| | - Nathalie Gaspar
- Department of Oncology for Child and AdolescentGustave Roussy Cancer CampusVillejuif cedexFrance
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Abstract
The prognosis for childhood cancer has improved considerably over the past 50 years. This improvement is attributed to well-designed clinical trials which have incorporated chemotherapy, surgery, and radiation. With an increased understanding of cancer biology and genetics, we have entered an era of precision medicine and immunotherapy that provides potential for improved cure rates. However, preclinical evaluation of these therapies is more nuanced, requiring more robust animal models. Evaluation of targeted treatments requires molecularly defined xenograft models that can capture the diversity within pediatric cancer. The development of novel immunotherapies ideally involves the use of animal models that can accurately recapitulate the human immune response. In this review, we provide an overview of xenograft models for childhood cancers, review successful examples of novel therapies translated from xenograft models to the clinic, and describe the modern tools of xenograft biobanks and humanized xenograft models for the study of immunotherapies.
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Affiliation(s)
- Kevin O McNerney
- Children’s Hospital of Philadelphia, Divisions of Hematology and Oncology, Philadelphia, PA 19104, USA
| | - David T Teachey
- Children’s Hospital of Philadelphia, Divisions of Hematology and Oncology, Philadelphia, PA 19104, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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30
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Schweer D, McCorkle JR, Rohr J, Tsodikov OV, Ueland F, Kolesar J. Mithramycin and Analogs for Overcoming Cisplatin Resistance in Ovarian Cancer. Biomedicines 2021; 9:70. [PMID: 33445667 PMCID: PMC7828137 DOI: 10.3390/biomedicines9010070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 12/12/2022] Open
Abstract
Ovarian cancer is a highly deadly malignancy in which recurrence is considered incurable. Resistance to platinum-based chemotherapy bodes a particularly abysmal prognosis, underscoring the need for novel therapeutic agents and strategies. The use of mithramycin, an antineoplastic antibiotic, has been previously limited by its narrow therapeutic window. Recent advances in semisynthetic methods have led to mithramycin analogs with improved pharmacological profiles. Mithramycin inhibits the activity of the transcription factor Sp1, which is closely linked with ovarian tumorigenesis and platinum-resistance. This article summarizes recent clinical developments related to mithramycin and postulates a role for the use of mithramycin, or its analog, in the treatment of platinum-resistant ovarian cancer.
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Affiliation(s)
- David Schweer
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology Lexington, University of Kentucky Markey Cancer Center, Lexington, KY 40536, USA; (D.S.); (F.U.)
| | - J. Robert McCorkle
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; (J.R.M.); (J.R.); (O.V.T.)
| | - Jurgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; (J.R.M.); (J.R.); (O.V.T.)
| | - Oleg V. Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; (J.R.M.); (J.R.); (O.V.T.)
| | - Frederick Ueland
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology Lexington, University of Kentucky Markey Cancer Center, Lexington, KY 40536, USA; (D.S.); (F.U.)
| | - Jill Kolesar
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology Lexington, University of Kentucky Markey Cancer Center, Lexington, KY 40536, USA; (D.S.); (F.U.)
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31
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Mithramycin A Radiosensitizes EWS:Fli1 + Ewing Sarcoma Cells by Inhibiting Double Strand Break Repair. Int J Radiat Oncol Biol Phys 2020; 109:1454-1471. [PMID: 33373655 DOI: 10.1016/j.ijrobp.2020.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 11/17/2020] [Accepted: 12/08/2020] [Indexed: 02/03/2023]
Abstract
PURPOSE The oncogenic EWS:Fli1 fusion protein is a key transcriptional mediator of Ewing sarcoma initiation, progression, and therapeutic resistance. Mithramycin A (MithA) is a potent and specific inhibitor of transcription mediated by the EWS:Fli1. We tested the hypothesis that pretreatment with MithA could selectively radiosensitize EWS:Fli1+ tumor cells by altering the transcriptional response to radiation injury. METHODS AND MATERIALS A panel of 4 EWS:Fli1+ and 3 EWS:Fli1- Ewing sarcoma cell lines and 1 nontumor cell line were subjected to MithA dose-response viability assays to determine the relative potency of MithA in cells possessing or lacking the EWS:Fli1 fusion. Radiosensitization by MithA was evaluated by clonogenic survival assays in vitro and in a murine xenograft model. DNA damage was evaluated by comet assay and γ-H2Ax flow cytometry. Immunoblotting, flow cytometry, and reverse-transcription, polymerase chain reaction were used to evaluate DNA damage-induced signaling and repair processes and apoptosis. RESULTS We found that MithA alone could potently and selectively inhibit the growth of EWS:Fli1+ tumor cells, but not cells lacking this fusion. Pretreatment with MithA for 24 hours before irradiation significantly reduced clonogenic survival in vitro and delayed tumor regrowth in vivo, prolonging survival of EWS:Fli1+ tumor-bearing mice. Although MithA did not increase the level of DNA double-strand breaks, mechanistic studies revealed that MithA pretreatment selectively inhibited DNA double-strand break repair through downregulation of EWS:Fli1-mediated transcription, leading to tumor cell death by apoptosis. CONCLUSIONS Our data indicate that MithA is an effective radiosensitizer of EWS:Fli1+ tumors and may achieve better local control at lower doses of radiation.
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32
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Hou C, Mandal A, Rohr J, Tsodikov OV. Allosteric interference in oncogenic FLI1 and ERG transactions by mithramycins. Structure 2020; 29:404-412.e4. [PMID: 33275876 DOI: 10.1016/j.str.2020.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/24/2020] [Accepted: 11/12/2020] [Indexed: 12/20/2022]
Abstract
ETS family transcription factors of ERG and FLI1 play a key role in oncogenesis of prostate cancer and Ewing sarcoma by binding regulatory DNA sites and interfering with function of other factors. Mithramycin (MTM) is an anti-cancer, DNA binding natural product that functions as a potent antagonist of ERG and FLI1 by an unknown mechanism. We present a series of crystal structures of the DNA binding domain (DBD) of ERG/FLI1 culminating in a structure of a high-order complex of the ERG/FLI1 DBD, transcription factor Runx2, core-binding factor beta (Cbfβ), and MTM on a DNA enhancer site, along with supporting DNA binding studies using MTM and its analogues. Taken together, these data provide insight into allosteric mechanisms underlying ERG and FLI1 transactions and their disruption by MTM analogues.
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Affiliation(s)
- Caixia Hou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
| | - Abhisek Mandal
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
| | - Jürgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
| | - Oleg V Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA.
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33
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Liu Y, Eckenrode JM, Zhang Y, Zhang J, Hayden RC, Kyomuhangi A, Ponomareva LV, Cui Z, Rohr J, Tsodikov OV, Van Lanen SG, Shaaban KA, Leggas M, Thorson JS. Mithramycin 2'-Oximes with Improved Selectivity, Pharmacokinetics, and Ewing Sarcoma Antitumor Efficacy. J Med Chem 2020; 63:14067-14086. [PMID: 33191745 DOI: 10.1021/acs.jmedchem.0c01526] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mithramycin A (MTM) inhibits the oncogenic transcription factor EWS-FLI1 in Ewing sarcoma, but poor pharmacokinetics (PK) and toxicity limit its clinical use. To address this limitation, we report an efficient MTM 2'-oxime (MTMox) conjugation strategy for rapid MTM diversification. Comparative cytotoxicity assays of 41 MTMox analogues using E-twenty-six (ETS) fusion-dependent and ETS fusion-independent cancer cell lines revealed improved ETS fusion-independent/dependent selectivity indices for select 2'-conjugated analogues as compared to MTM. Luciferase-based reporter assays demonstrated target engagement at low nM concentrations, and molecular assays revealed that analogues inhibit the transcriptional activity of EWS-FLI1. These in vitro screens identified MTMox32E (a Phe-Trp dipeptide-based 2'-conjugate) for in vivo testing. Relative to MTM, MTMox32E displayed an 11-fold increase in plasma exposure and improved efficacy in an Ewing sarcoma xenograft. Importantly, these studies are the first to point to simple C3 aliphatic side-chain modification of MTM as an effective strategy to improve PK.
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Affiliation(s)
- Yang Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Joseph M Eckenrode
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Yinan Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jianjun Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Reiya C Hayden
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Annet Kyomuhangi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Larissa V Ponomareva
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Zheng Cui
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jürgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Oleg V Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Steven G Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Khaled A Shaaban
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Markos Leggas
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jon S Thorson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
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34
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Grünewald TGP, Alonso M, Avnet S, Banito A, Burdach S, Cidre‐Aranaz F, Di Pompo G, Distel M, Dorado‐Garcia H, Garcia‐Castro J, González‐González L, Grigoriadis AE, Kasan M, Koelsche C, Krumbholz M, Lecanda F, Lemma S, Longo DL, Madrigal‐Esquivel C, Morales‐Molina Á, Musa J, Ohmura S, Ory B, Pereira‐Silva M, Perut F, Rodriguez R, Seeling C, Al Shaaili N, Shaabani S, Shiavone K, Sinha S, Tomazou EM, Trautmann M, Vela M, Versleijen‐Jonkers YMH, Visgauss J, Zalacain M, Schober SJ, Lissat A, English WR, Baldini N, Heymann D. Sarcoma treatment in the era of molecular medicine. EMBO Mol Med 2020; 12:e11131. [PMID: 33047515 PMCID: PMC7645378 DOI: 10.15252/emmm.201911131] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/20/2020] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
Sarcomas are heterogeneous and clinically challenging soft tissue and bone cancers. Although constituting only 1% of all human malignancies, sarcomas represent the second most common type of solid tumors in children and adolescents and comprise an important group of secondary malignancies. More than 100 histological subtypes have been characterized to date, and many more are being discovered due to molecular profiling. Owing to their mostly aggressive biological behavior, relative rarity, and occurrence at virtually every anatomical site, many sarcoma subtypes are in particular difficult-to-treat categories. Current multimodal treatment concepts combine surgery, polychemotherapy (with/without local hyperthermia), irradiation, immunotherapy, and/or targeted therapeutics. Recent scientific advancements have enabled a more precise molecular characterization of sarcoma subtypes and revealed novel therapeutic targets and prognostic/predictive biomarkers. This review aims at providing a comprehensive overview of the latest advances in the molecular biology of sarcomas and their effects on clinical oncology; it is meant for a broad readership ranging from novices to experts in the field of sarcoma.
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Affiliation(s)
- Thomas GP Grünewald
- Max‐Eder Research Group for Pediatric Sarcoma BiologyInstitute of PathologyFaculty of MedicineLMU MunichMunichGermany
- Division of Translational Pediatric Sarcoma ResearchGerman Cancer Research Center (DKFZ), Hopp Children's Cancer Center (KiTZ), German Cancer Consortium (DKTK)HeidelbergGermany
- Institute of PathologyHeidelberg University HospitalHeidelbergGermany
| | - Marta Alonso
- Program in Solid Tumors and BiomarkersFoundation for the Applied Medical ResearchUniversity of Navarra PamplonaPamplonaSpain
| | - Sofia Avnet
- Orthopedic Pathophysiology and Regenerative Medicine UnitIRCCS Istituto Ortopedico RizzoliBolognaItaly
| | - Ana Banito
- Pediatric Soft Tissue Sarcoma Research GroupGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Stefan Burdach
- Department of Pediatrics and Children's Cancer Research Center (CCRC)Technische Universität MünchenMunichGermany
| | - Florencia Cidre‐Aranaz
- Max‐Eder Research Group for Pediatric Sarcoma BiologyInstitute of PathologyFaculty of MedicineLMU MunichMunichGermany
| | - Gemma Di Pompo
- Orthopedic Pathophysiology and Regenerative Medicine UnitIRCCS Istituto Ortopedico RizzoliBolognaItaly
| | | | | | | | | | | | - Merve Kasan
- Max‐Eder Research Group for Pediatric Sarcoma BiologyInstitute of PathologyFaculty of MedicineLMU MunichMunichGermany
| | | | | | - Fernando Lecanda
- Division of OncologyAdhesion and Metastasis LaboratoryCenter for Applied Medical ResearchUniversity of NavarraPamplonaSpain
| | - Silvia Lemma
- Orthopedic Pathophysiology and Regenerative Medicine UnitIRCCS Istituto Ortopedico RizzoliBolognaItaly
| | - Dario L Longo
- Institute of Biostructures and Bioimaging (IBB)Italian National Research Council (CNR)TurinItaly
| | | | | | - Julian Musa
- Max‐Eder Research Group for Pediatric Sarcoma BiologyInstitute of PathologyFaculty of MedicineLMU MunichMunichGermany
- Department of General, Visceral and Transplantation SurgeryUniversity of HeidelbergHeidelbergGermany
| | - Shunya Ohmura
- Max‐Eder Research Group for Pediatric Sarcoma BiologyInstitute of PathologyFaculty of MedicineLMU MunichMunichGermany
| | | | - Miguel Pereira‐Silva
- Department of Pharmaceutical TechnologyFaculty of PharmacyUniversity of CoimbraCoimbraPortugal
| | - Francesca Perut
- Orthopedic Pathophysiology and Regenerative Medicine UnitIRCCS Istituto Ortopedico RizzoliBolognaItaly
| | - Rene Rodriguez
- Instituto de Investigación Sanitaria del Principado de AsturiasOviedoSpain
- CIBER en oncología (CIBERONC)MadridSpain
| | | | - Nada Al Shaaili
- Department of Oncology and MetabolismUniversity of SheffieldSheffieldUK
| | - Shabnam Shaabani
- Department of Drug DesignUniversity of GroningenGroningenThe Netherlands
| | - Kristina Shiavone
- Department of Oncology and MetabolismUniversity of SheffieldSheffieldUK
| | - Snehadri Sinha
- Department of Oral and Maxillofacial DiseasesUniversity of HelsinkiHelsinkiFinland
| | | | - Marcel Trautmann
- Division of Translational PathologyGerhard‐Domagk‐Institute of PathologyMünster University HospitalMünsterGermany
| | - Maria Vela
- Hospital La Paz Institute for Health Research (IdiPAZ)MadridSpain
| | | | | | - Marta Zalacain
- Institute of Biostructures and Bioimaging (IBB)Italian National Research Council (CNR)TurinItaly
| | - Sebastian J Schober
- Department of Pediatrics and Children's Cancer Research Center (CCRC)Technische Universität MünchenMunichGermany
| | - Andrej Lissat
- University Children′s Hospital Zurich – Eleonoren FoundationKanton ZürichZürichSwitzerland
| | - William R English
- Department of Oncology and MetabolismUniversity of SheffieldSheffieldUK
| | - Nicola Baldini
- Orthopedic Pathophysiology and Regenerative Medicine UnitIRCCS Istituto Ortopedico RizzoliBolognaItaly
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaBolognaItaly
| | - Dominique Heymann
- Department of Oncology and MetabolismUniversity of SheffieldSheffieldUK
- Université de NantesInstitut de Cancérologie de l'OuestTumor Heterogeneity and Precision MedicineSaint‐HerblainFrance
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Wagner AE, Schwarzmayr T, Häberle B, Vokuhl C, Schmid I, von Schweinitz D, Kappler R. SP8 Promotes an Aggressive Phenotype in Hepatoblastoma via FGF8 Activation. Cancers (Basel) 2020; 12:cancers12082294. [PMID: 32824198 PMCID: PMC7465460 DOI: 10.3390/cancers12082294] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 12/16/2022] Open
Abstract
Hepatoblastoma (HB) is the most common malignant liver tumor in childhood and it generally has a good prognosis. However, if associated with aggressive metastatic disease, outcome is still poor. The molecular mechanisms leading to metastatic spread in HB patients are still unknown. By combining RNA-sequencing and a genome-wide methylome analysis, we identified the transcription factor SP8 and the growth factor FGF8 among the most strongly upregulated genes in metastatic HB cases, with a concomitant robust demethylation of the respective promoter regions. Of note, high expression of both candidates was associated with the aggressive C2 subtype of the 16-gene signature and poor survival. Chromatin immunoprecipitation revealed a direct transcriptional regulation of FGF8 through binding of SP8 to the FGF8 promoter. Gain- and loss-of-function experiments proved promoting effects of SP8 on motility, self-renewal, migration, and the invasive potential of HB cells. Moreover, stable overexpression of SP8 in Hep3B cells resulted in the acquisition of a mesenchymal phenotype and a strong upregulation of epithelial-mesenchymal transition-associated genes. Using KRAB-mediated CRISPR-dCas9 interference directed against FGF8, we could show that FGF8 is essential for the SP8-mediated aggressive tumor behavior. Treatment of HB cell lines with the pan SP family inhibitor mithramycin A resulted in a significant inhibition of their clonogenic growth. In summary, we identified SP8 and FGF8 as key players in aggressive traits of HB and propose SP8 inhibiting drugs as a new effective treatment strategy especially for metastatic tumors.
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Affiliation(s)
- Alexandra Elisabeth Wagner
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, 80337 Munich, Germany; (A.E.W.); (B.H.); (D.v.S.)
| | - Thomas Schwarzmayr
- Institute of Human Genetics, Helmholtz Center Munich, 85764 Neuherberg, Germany;
| | - Beate Häberle
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, 80337 Munich, Germany; (A.E.W.); (B.H.); (D.v.S.)
| | - Christian Vokuhl
- Institute of Pathology, University Hospital Bonn, 53127 Bonn, Germany;
| | - Irene Schmid
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University Munich, 80337 Munich, Germany;
| | - Dietrich von Schweinitz
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, 80337 Munich, Germany; (A.E.W.); (B.H.); (D.v.S.)
| | - Roland Kappler
- Department of Pediatric Surgery, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, 80337 Munich, Germany; (A.E.W.); (B.H.); (D.v.S.)
- Correspondence: ; Tel.: +49-89-4400-57810
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36
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Kormanec J, Novakova R, Csolleiova D, Feckova L, Rezuchova B, Sevcikova B, Homerova D. The antitumor antibiotic mithramycin: new advanced approaches in modification and production. Appl Microbiol Biotechnol 2020; 104:7701-7721. [DOI: 10.1007/s00253-020-10782-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/30/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022]
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Heitzeneder S, Sotillo E, Shern JF, Sindiri S, Xu P, Jones R, Pollak M, Noer PR, Lorette J, Fazli L, Alag A, Meltzer P, Lau C, Conover CA, Oxvig C, Sorensen PH, Maris JM, Khan J, Mackall CL. Pregnancy-Associated Plasma Protein-A (PAPP-A) in Ewing Sarcoma: Role in Tumor Growth and Immune Evasion. J Natl Cancer Inst 2020; 111:970-982. [PMID: 30698726 DOI: 10.1093/jnci/djy209] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/10/2018] [Accepted: 11/12/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Ewing sarcoma (EWS) manifests one of the lowest somatic mutation rates of any cancer, leading to a scarcity of druggable mutations and neoantigens. Immunotherapeutics targeting differentially expressed cell surface antigens could provide therapeutic benefit for such tumors. Pregnancy-associated plasma protein A (PAPP-A) is a cell membrane-associated proteinase produced by the placenta that promotes fetal growth by inducing insulinlike growth factor (IGF) signaling. METHODS By comparing RNA expression of cell surface proteins in EWS (n = 120) versus normal tissues (n = 42), we comprehensively characterized the surfaceome of EWS to identify highly differentially expressed molecules. Using CRISPR/Cas-9 and anti-PAPP-A antibodies, we investigated biological roles for PAPP-A in EWS in vitro and in vivo in NSG xenograft models and performed RNA-sequencing on PAPPA knockout clones (n = 5) and controls (n = 3). All statistical tests were two-sided. RESULTS EWS surfaceome analysis identified 11 highly differentially overexpressed genes, with PAPPA ranking second in differential expression. In EWS cell lines, genetic knockout of PAPPA and treatment with anti-PAPP-A antibodies revealed an essential survival role by regulating local IGF-1 bioavailability. MAb-mediated PAPPA inhibition diminished EWS growth in orthotopic xenografts (leg area mm2 at day 49 IgG2a control (CTRL) [n = 14], mean = 397.0, SD = 86.1 vs anti-PAPP-A [n = 14], mean = 311.7, SD = 155.0; P = .03; median OS anti-PAPP-A = 52.5 days, 95% CI = 46.0 to 63.0 days vs IgG2a = 45.0 days, 95% CI = 42.0 to 52.0 days; P = .02) and improved the efficacy of anti-IGF-1R treatment (leg area mm2 at day 49 anti-PAPP-A + anti-IGF-1R [n = 15], mean = 217.9, SD = 148.5 vs IgG2a-CTRL; P < .001; median OS anti-PAPP-A + anti-IGF1R = 63.0 days, 95% CI = 52.0 to 67.0 days vs IgG2a-CTRL; P < .001). Unexpectedly, PAPPA knockout in EWS cell lines induced interferon (IFN)-response genes, including proteins associated with antigen processing/presentation. Consistently, gene expression profiles in PAPPA-low EWS tumors were enriched for immune response pathways. CONCLUSION This work provides a comprehensive characterization of the surfaceome of EWS, credentials PAPP-A as a highly differentially expressed therapeutic target, and discovers a novel link between IGF-1 signaling and immune evasion in cancer, thus implicating shared mechanisms of immune evasion between EWS and the placenta.
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Wang S, Gilbreath C, Kollipara RK, Sonavane R, Huo X, Yenerall P, Das A, Ma S, Raj GV, Kittler R. Mithramycin suppresses DNA damage repair via targeting androgen receptor in prostate cancer. Cancer Lett 2020; 488:40-49. [PMID: 32485222 DOI: 10.1016/j.canlet.2020.05.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 04/22/2020] [Accepted: 05/21/2020] [Indexed: 01/04/2023]
Abstract
The dependency of prostate cancer (PCa) growth on androgen receptor (AR) signaling has been harnessed to develop first-line therapies for high-risk localized and metastatic PCa treatment. However, the occurrence of aberrant expression, mutated or splice variants of AR confers resistance to androgen ablation therapy (ADT), radiotherapy or chemotherapy in AR-positive PCa. Therapeutic strategies that effectively inhibit the expression and/or transcriptional activity of full-length AR, mutated AR and AR splice variants have remained elusive. In this study, we report that mithramycin (MTM), an antineoplastic antibiotic, suppresses cell proliferation and exhibits dual inhibitory effects on expression and transcriptional activity of AR and AR splice variants. MTM blocks AR recruitment to its genomic targets by occupying AR enhancers and causes downregulation of AR target genes, which includes key DNA repair factors in DNA damage repair (DDR). We show that MTM significantly impairs DDR and enhances the effectiveness of ionizing radiation or the radiomimetic agent Bleomycin in PCa. Thus, the combination of MTM treatment with RT or radiomimetic agents, such as bleomycin, may present a novel effective therapeutic strategy for patients with high-risk, clinically localized PCa.
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Affiliation(s)
- Shan Wang
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA.
| | - Collin Gilbreath
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Rahul K Kollipara
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rajni Sonavane
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Xiaofang Huo
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Paul Yenerall
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA; Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Amit Das
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Shihong Ma
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Ganesh V Raj
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Ralf Kittler
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA; Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA; Department of Pharmacology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA; Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA.
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Zabala D, Song L, Dashti Y, Challis GL, Salas JA, Méndez C. Heterologous reconstitution of the biosynthesis pathway for 4-demethyl-premithramycinone, the aglycon of antitumor polyketide mithramycin. Microb Cell Fact 2020; 19:111. [PMID: 32448325 PMCID: PMC7247220 DOI: 10.1186/s12934-020-01368-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/15/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Mithramycin is an anti-tumor compound of the aureolic acid family produced by Streptomyces argillaceus. Its biosynthesis gene cluster has been cloned and characterized, and several new analogs with improved pharmacological properties have been generated through combinatorial biosynthesis. To further study these compounds as potential new anticancer drugs requires their production yields to be improved significantly. The biosynthesis of mithramycin proceeds through the formation of the key intermediate 4-demethyl-premithramycinone. Extensive studies have characterized the biosynthesis pathway from this intermediate to mithramycin. However, the biosynthesis pathway for 4-demethyl-premithramycinone remains unclear. RESULTS Expression of cosmid cosAR7, containing a set of mithramycin biosynthesis genes, in Streptomyces albus resulted in the production of 4-demethyl-premithramycinone, delimiting genes required for its biosynthesis. Inactivation of mtmL, encoding an ATP-dependent acyl-CoA ligase, led to the accumulation of the tricyclic intermediate 2-hydroxy-nogalonic acid, proving its essential role in the formation of the fourth ring of 4-demethyl-premithramycinone. Expression of different sets of mithramycin biosynthesis genes as cassettes in S. albus and analysis of the resulting metabolites, allowed the reconstitution of the biosynthesis pathway for 4-demethyl-premithramycinone, assigning gene functions and establishing the order of biosynthetic steps. CONCLUSIONS We established the biosynthesis pathway for 4-demethyl-premithramycinone, and identified the minimal set of genes required for its assembly. We propose that the biosynthesis starts with the formation of a linear decaketide by the minimal polyketide synthase MtmPKS. Then, the cyclase/aromatase MtmQ catalyzes the cyclization of the first ring (C7-C12), followed by formation of the second and third rings (C5-C14; C3-C16) catalyzed by the cyclase MtmY. Formation of the fourth ring (C1-C18) requires MtmL and MtmX. Finally, further oxygenation and reduction is catalyzed by MtmOII and MtmTI/MtmTII respectively, to generate the final stable tetracyclic intermediate 4-demethyl-premithramycinone. Understanding the biosynthesis of this compound affords enhanced possibilities to generate new mithramycin analogs and improve their production titers for bioactivity investigation.
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Affiliation(s)
- Daniel Zabala
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias (I.U.O.P.A), University of Oviedo, Oviedo, Spain
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Lijiang Song
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Yousef Dashti
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Gregory L Challis
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry, CV4 7AL, UK
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, 3800, Australia
| | - José A Salas
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias (I.U.O.P.A), University of Oviedo, Oviedo, Spain
- Instituto de Investigación Sanitaria de Asturias (ISPA), Oviedo, Spain
| | - Carmen Méndez
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias (I.U.O.P.A), University of Oviedo, Oviedo, Spain.
- Instituto de Investigación Sanitaria de Asturias (ISPA), Oviedo, Spain.
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40
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Flores G, Everett JH, Boguslawski EA, Oswald BM, Madaj ZB, Beddows I, Dikalov S, Adams M, Klumpp-Thomas CA, Kitchen-Goosen SM, Martin SE, Caplen NJ, Helman LJ, Grohar PJ. CDK9 Blockade Exploits Context-dependent Transcriptional Changes to Improve Activity and Limit Toxicity of Mithramycin for Ewing Sarcoma. Mol Cancer Ther 2020; 19:1183-1196. [PMID: 32127464 DOI: 10.1158/1535-7163.mct-19-0775] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/17/2019] [Accepted: 02/19/2020] [Indexed: 11/16/2022]
Abstract
There is a need to develop novel approaches to improve the balance between efficacy and toxicity for transcription factor-targeted therapies. In this study, we exploit context-dependent differences in RNA polymerase II processivity as an approach to improve the activity and limit the toxicity of the EWS-FLI1-targeted small molecule, mithramycin, for Ewing sarcoma. The clinical activity of mithramycin for Ewing sarcoma is limited by off-target liver toxicity that restricts the serum concentration to levels insufficient to inhibit EWS-FLI1. In this study, we perform an siRNA screen of the druggable genome followed by a matrix drug screen to identify mithramycin potentiators and a synergistic "class" effect with cyclin-dependent kinase 9 (CDK9) inhibitors. These CDK9 inhibitors enhanced the mithramycin-mediated suppression of the EWS-FLI1 transcriptional program leading to a shift in the IC50 and striking regressions of Ewing sarcoma xenografts. To determine whether these compounds may also be liver protective, we performed a qPCR screen of all known liver toxicity genes in HepG2 cells to identify mithramycin-driven transcriptional changes that contribute to the liver toxicity. Mithramycin induces expression of the BTG2 gene in HepG2 but not Ewing sarcoma cells, which leads to a liver-specific accumulation of reactive oxygen species (ROS). siRNA silencing of BTG2 rescues the induction of ROS and the cytotoxicity of mithramycin in these cells. Furthermore, CDK9 inhibition blocked the induction of BTG2 to limit cytotoxicity in HepG2, but not Ewing sarcoma cells. These studies provide the basis for a synergistic and less toxic EWS-FLI1-targeted combination therapy for Ewing sarcoma.
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Affiliation(s)
- Guillermo Flores
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, Michigan.,College of Human Medicine, Michigan State University, Grand Rapids, Michigan
| | - Joel H Everett
- Department of Pharmacology, Vanderbilt University, Nashville, Tennessee
| | - Elissa A Boguslawski
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, Michigan
| | - Brandon M Oswald
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, Michigan
| | - Zachary B Madaj
- Bioinformatics and Biostatistics Core, Van Andel Research Institute, Grand Rapids, Michigan
| | - Ian Beddows
- Bioinformatics and Biostatistics Core, Van Andel Research Institute, Grand Rapids, Michigan
| | - Sergey Dikalov
- The Free Radicals in Medicine Core, Division of Clinical Pharmacology Vanderbilt University Medical Center, Nashville, Tennessee
| | - Marie Adams
- Bioinformatics and Biostatistics Core, Van Andel Research Institute, Grand Rapids, Michigan
| | - Carleen A Klumpp-Thomas
- Trans-NIH RNAi Screening Facility, Division of Preclinical Innovation, National Center for Advancing Translational Sciences, NIH, Rockville, Maryland
| | - Susan M Kitchen-Goosen
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, Michigan
| | - Scott E Martin
- Trans-NIH RNAi Screening Facility, Division of Preclinical Innovation, National Center for Advancing Translational Sciences, NIH, Rockville, Maryland
| | - Natasha J Caplen
- Genetics Branch, Center for Cancer Research, NCI, Bethesda, Maryland
| | - Lee J Helman
- Pediatric Oncology Branch, Center for Cancer Research, NCI, Bethesda, Maryland
| | - Patrick J Grohar
- Center for Cancer and Cell Biology, Van Andel Research Institute, Grand Rapids, Michigan. .,Pediatric Oncology Branch, Center for Cancer Research, NCI, Bethesda, Maryland.,Department of Pediatrics, Vanderbilt University, Nashville, Tennessee.,Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan.,Division of Pediatric Hematology-Oncology, Helen DeVos Children's Hospital, Grand Rapids, Michigan.,Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA
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41
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Precision medicine in Ewing sarcoma: a translational point of view. Clin Transl Oncol 2020; 22:1440-1454. [PMID: 32026343 DOI: 10.1007/s12094-020-02298-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/09/2020] [Indexed: 12/19/2022]
Abstract
Ewing sarcoma is a rare tumor that arises in bones of children and teenagers but, in 15% of the patients it is presented as a primary soft tissue tumor. Balanced reciprocal chimeric translocation t(11;22)(q24;q12), which encodes an oncogenic protein fusion (EWSR1/FLI1), is the most generalized and characteristic molecular event. Using conventional treatments, (chemotherapy, surgery and radiotherapy) long-term overall survival rate is 30% for patients with disseminated disease and 65-75% for patients with localized tumors. Urgent new effective drug development is a challenge. This review summarizes the preclinical and clinical investigational knowledge about prognostic and targetable biomarkers in Ewing sarcoma, finally suggesting a workflow for precision medicine committees.
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42
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Dyson KA, Stover BD, Grippin A, Mendez-Gomez HR, Lagmay J, Mitchell DA, Sayour EJ. Emerging trends in immunotherapy for pediatric sarcomas. J Hematol Oncol 2019; 12:78. [PMID: 31311607 PMCID: PMC6636007 DOI: 10.1186/s13045-019-0756-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 06/14/2019] [Indexed: 12/16/2022] Open
Abstract
While promising, immunotherapy has yet to be fully unlocked for the preponderance of cancers where conventional chemoradiation reigns. This remains particularly evident in pediatric sarcomas where standard of care has not appreciably changed in decades. Importantly, pediatric bone sarcomas, like osteosarcoma and Ewing’s sarcoma, possess unique tumor microenvironments driven by distinct molecular features, as do rhabdomyosarcomas and soft tissue sarcomas. A better understanding of each malignancy’s biology, heterogeneity, and tumor microenvironment may lend new insights toward immunotherapeutic targets in novel platform technologies for cancer vaccines and adoptive cellular therapy. These advances may pave the way toward new treatments requisite for pediatric sarcomas and patients in need of new therapies.
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Affiliation(s)
- Kyle A Dyson
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA
| | - Brian D Stover
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA.,Division of Pediatric Hematology Oncology, Department of Pediatrics, University of Florida, PO Box 100298, Gainesville, FL, 32610, USA
| | - Adam Grippin
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA
| | - Hector R Mendez-Gomez
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA
| | - Joanne Lagmay
- Division of Pediatric Hematology Oncology, Department of Pediatrics, University of Florida, PO Box 100298, Gainesville, FL, 32610, USA
| | - Duane A Mitchell
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA
| | - Elias J Sayour
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida Brain Tumor Immunotherapy Program, Lillian S. Wells Department of Neurosurgery, McKnight Brain Institute, University of Florida, 1149 South Newell Drive, Gainesville, FL, 32611, USA. .,Division of Pediatric Hematology Oncology, Department of Pediatrics, University of Florida, PO Box 100298, Gainesville, FL, 32610, USA.
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43
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Xu J, Xie L, Sun X, Dong S, Tang X, Guo W. Management of recurrent or refractory Ewing sarcoma: A systematic review of phase II clinical trials in the last 15 years. Oncol Lett 2019; 18:348-358. [PMID: 31289506 PMCID: PMC6540207 DOI: 10.3892/ol.2019.10328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/18/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of the present study was to evaluate the antitumor activity of drugs in phase II clinical trials for recurrent or refractory EWS. A systematic review was performed using clinical trials from four data sources: i) ClinicalTrials.gov; ii) PubMed; iii) Clinicaltrialsregister.eu; and iv) American Society of Clinical Oncology. The search terms included: '(Ewing sarcoma OR Ewing family of tumors) AND (phase II OR phase I/II)'. Overall, 465 trials were identified and 64 were included in the present study, of which, 37 had published results. The highest objective response rate came from irinotecan-based chemotherapy. Currently, the majority of targeted therapy has failed to demonstrate any activity except for regorafenib. Trials using anti-angiogenesis small molecular tyrosine kinase inhibitors (aaTKIs) are currently ongoing with promising early results. For immunotherapy, anti-insulin like growth factor 1 receptor antibody demonstrated disappointing activity. The best outcome came from irinotecan-based regimens. Targeted therapy with aaTKIs is worthy of further investigation, with immunotherapy is not recommended for off-label use.
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Affiliation(s)
- Jie Xu
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
| | - Lu Xie
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
| | - Xin Sun
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
| | - Sen Dong
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
| | - Xiaodong Tang
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
| | - Wei Guo
- Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100034, P.R. China
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44
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Casey DL, Lin TY, Cheung NKV. Exploiting Signaling Pathways and Immune Targets Beyond the Standard of Care for Ewing Sarcoma. Front Oncol 2019; 9:537. [PMID: 31275859 PMCID: PMC6593481 DOI: 10.3389/fonc.2019.00537] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 06/03/2019] [Indexed: 12/20/2022] Open
Abstract
Ewing sarcoma (ES) family of tumors includes bone and soft tissue tumors that are often characterized by a specific translocation between chromosome 11 and 22, resulting in the EWS-FLI1 fusion gene. With the advent of multi-modality treatment including cytotoxic chemotherapy, surgery, and radiation therapy, the prognosis for patients with ES has substantially improved. However, a therapeutic plateau is now reached for both localized and metastatic disease over the last two decades. Burdened by the toxicity limits associated with the current frontline systemic therapy, there is an urgent need for novel targeted therapeutic strategies. In this review, we discuss the current treatment paradigm of ES, and explore preclinical evidence and emerging treatments directed at tumor signaling pathways and immune targets.
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Affiliation(s)
- Dana L Casey
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Tsung-Yi Lin
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Nai-Kong V Cheung
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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45
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Lambert M, Alioui M, Jambon S, Depauw S, Van Seuningen I, David-Cordonnier MH. Direct and Indirect Targeting of HOXA9 Transcription Factor in Acute Myeloid Leukemia. Cancers (Basel) 2019; 11:cancers11060837. [PMID: 31213012 PMCID: PMC6627208 DOI: 10.3390/cancers11060837] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/10/2019] [Accepted: 06/13/2019] [Indexed: 01/14/2023] Open
Abstract
HOXA9 (Homeobox A9) is a homeotic transcription factor known for more than two decades to be associated with leukemia. The expression of HOXA9 homeoprotein is associated with anterior-posterior patterning during embryonic development, and its expression is then abolished in most adult cells, with the exception of hematopoietic progenitor cells. The oncogenic function of HOXA9 was first assessed in human acute myeloid leukemia (AML), particularly in the mixed-phenotype associated lineage leukemia (MPAL) subtype. HOXA9 expression in AML is associated with aggressiveness and a poor prognosis. Since then, HOXA9 has been involved in other hematopoietic malignancies and an increasing number of solid tumors. Despite this, HOXA9 was for a long time not targeted to treat cancer, mainly since, as a transcription factor, it belongs to a class of protein long considered to be an "undruggable" target; however, things have now evolved. The aim of the present review is to focus on the different aspects of HOXA9 targeting that could be achieved through multiple ways: (1) indirectly, through the inhibition of its expression, a strategy acting principally at the epigenetic level; or (2) directly, through the inhibition of its transcription factor function by acting at either the protein/protein interaction or the protein/DNA interaction interfaces.
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Affiliation(s)
- Mélanie Lambert
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
- Institut pour la Recherche sur le Cancer de Lille, F-59045 Lille, France.
| | - Meryem Alioui
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
- Institut pour la Recherche sur le Cancer de Lille, F-59045 Lille, France.
| | - Samy Jambon
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
- Institut pour la Recherche sur le Cancer de Lille, F-59045 Lille, France.
| | - Sabine Depauw
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
- Institut pour la Recherche sur le Cancer de Lille, F-59045 Lille, France.
| | - Isabelle Van Seuningen
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
| | - Marie-Hélène David-Cordonnier
- Univ. Lille, Inserm, CHU Lille, UMR-S1172 - JPArc - Centre de Recherche Jean-Pierre Aubert Neurosciences and Cancer, F-59000 Lille, France.
- Institut pour la Recherche sur le Cancer de Lille, F-59045 Lille, France.
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Sissung TM, Huang PA, Hauke RJ, McCrea EM, Peer CJ, Barbier RH, Strope JD, Ley AM, Zhang M, Hong JA, Venzon D, Jackson JP, Brouwer KR, Grohar P, Glod J, Widemann BC, Heller T, Schrump DS, Figg WD. Severe Hepatotoxicity of Mithramycin Therapy Caused by Altered Expression of Hepatocellular Bile Transporters. Mol Pharmacol 2019; 96:158-167. [PMID: 31175181 DOI: 10.1124/mol.118.114827] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 05/15/2019] [Indexed: 12/14/2022] Open
Abstract
Mithramycin demonstrates preclinical anticancer activity, but its therapeutic dose is limited by the development of hepatotoxicity that remains poorly characterized. A pharmacogenomics characterization of mithramycin-induced transaminitis revealed that hepatotoxicity is associated with germline variants in genes involved in bile disposition: ABCB4 (multidrug resistance 3) rs2302387 and ABCB11 [bile salt export pump (BSEP)] rs4668115 reduce transporter expression (P < 0.05) and were associated with ≥grade 3 transaminitis developing 24 hours after the third infusion of mithramycin (25 mcg/kg, 6 hours/infusion, every day ×7, every 28 days; P < 0.0040). A similar relationship was observed in a pediatric cohort. We therefore undertook to characterize the mechanism of mithramycin-induced acute transaminitis. As mithramycin affects cellular response to bile acid treatment by altering the expression of multiple bile transporters (e.g., ABCB4, ABCB11, sodium/taurocholate cotransporting polypeptide, organic solute transporter α/β) in several cell lines [Huh7, HepaRG, HepaRG BSEP (-/-)] and primary human hepatocytes, we hypothesized that mithramycin inhibited bile-mediated activation of the farnesoid X receptor (FXR). FXR was downregulated in all hepatocyte cell lines and primary human hepatocytes (P < 0.0001), and mithramycin inhibited chenodeoxycholic acid- and GW4046-induced FXR-galactose-induced gene 4 luciferase reporter activity (P < 0.001). Mithramycin promoted glycochenodeoxycholic acid-induced cytotoxicity in ABCB11 (-/-) cells and increased the overall intracellular concentration of bile acids in primary human hepatocytes grown in sandwich culture (P < 0.01). Mithramycin is a FXR expression and FXR transactivation inhibitor that inhibits bile flow and potentiates bile-induced cellular toxicity, particularly in cells with low ABCB11 function. These results suggest that mithramycin causes hepatotoxicity through derangement of bile acid disposition; results also suggest that pharmacogenomic markers may be useful to identify patients who may tolerate higher mithramycin doses. SIGNIFICANCE STATEMENT: The present study characterizes a novel mechanism of drug-induced hepatotoxicity in which mithramycin not only alters farnesoid X receptor (FXR) and small heterodimer partner gene expression but also inhibits bile acid binding to FXR, resulting in deregulation of cellular bile homeostasis. Two novel single-nucleotide polymorphisms in bile flow transporters are associated with mithramycin-induced liver function test elevations, and the present results are the rationale for a genotype-directed clinical trial using mithramycin in patients with thoracic malignancies.
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Affiliation(s)
- Tristan M Sissung
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Phoebe A Huang
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Ralph J Hauke
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Edel M McCrea
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Cody J Peer
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Roberto H Barbier
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Jonathan D Strope
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Ariel M Ley
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Mary Zhang
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Julie A Hong
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - David Venzon
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Jonathan P Jackson
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Kenneth R Brouwer
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Patrick Grohar
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Jon Glod
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Brigitte C Widemann
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - Theo Heller
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - David S Schrump
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
| | - William D Figg
- Clinical Pharmacology Program (T.M.S., C.J.P., W.D.F.), Molecular Pharmacology Section (P.A.H., R.J.H., E.M.M., R.H.B., J.D.S., A.M.L., W.D.F.), Biostatistics and Data Management Section (M.Z., J.A.H., D.V.), Pediatric Oncology Branch (P.G., J.G., B.C.W.), Thoracic Surgery Branch, Center for Cancer Research, National Cancer Institute (D.S.S.), and Translational Hepatology Section (T.H.), Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland; and BioIVT, ADME-Tox Division, Durham, North Carolina (J.P.J., K.R.B.)
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Eckenrode JM, Mitra P, Rohr J, Leggas M. Bioanalytical method for quantitative determination of mithramycin analogs in mouse plasma by HPLC-QTOF. Biomed Chromatogr 2019; 33:e4544. [PMID: 30927450 DOI: 10.1002/bmc.4544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/19/2019] [Accepted: 03/26/2019] [Indexed: 11/06/2022]
Abstract
Mithramycin (MTM) has potent anticancer activity, but severe toxicities restrict its clinical use. Semi-synthetic approaches have yielded novel MTM analogs with potentially lower toxicity and similar efficacy. In an effort to transition these analogs into in vivo models, a bioanalytical method was developed for their quantification in mouse plasma. Here we present the validation of the method for the quantitation of mithramycin SA-tryptophan (MTMSA-Trp) as well as the applicability of the methodology for assaying additional analogs, including MTM, mithramycin SK (MTMSK) and mithramycin SA-phenylalanine (MTMSA-Phe) with run times of 6 min. Assay linearity ranged from 5 to 100 ng/mL. Accuracies of calibration standards and quality control samples were within 15% of nominal with precision variability of <20%. MTMSA-Trp was stable for 30 days at -80°C and for at least three freeze-thaw cycles. Methanol (-80°C) extraction afforded 92% of MTMSA-Trp from plasma. Calibration curves for MTM and analogs were also linear from ≤5 to 100 ng/mL. This versatile method was used to quantitate MTM analogs in plasma samples collected during preclinical pharmacokinetic studies.
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Affiliation(s)
- Joseph M Eckenrode
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Prithiba Mitra
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Jürgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA.,Markey Cancer Center, University of Kentucky, Lexington, KY, USA
| | - Markos Leggas
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA.,Markey Cancer Center, University of Kentucky, Lexington, KY, USA.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
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48
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Ma Y, Baltezor M, Rajewski L, Crow J, Samuel G, Staggs VS, Chastain KM, Toretsky JA, Weir SJ, Godwin AK. Targeted inhibition of histone deacetylase leads to suppression of Ewing sarcoma tumor growth through an unappreciated EWS-FLI1/HDAC3/HSP90 signaling axis. J Mol Med (Berl) 2019; 97:957-972. [PMID: 31025088 DOI: 10.1007/s00109-019-01782-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 03/17/2019] [Accepted: 03/27/2019] [Indexed: 12/14/2022]
Abstract
Ewing sarcoma (ES) are aggressive pediatric bone and soft tissue tumors driven by EWS-ETS fusion oncogenes, most commonly EWS-FLI1. Treatment of ES patients consists of up to 9 months of alternating courses of 2 chemotherapeutic regimens. Furthermore, EWS-ETS-targeted therapies have yet to demonstrate clinical benefit, thereby emphasizing a clinical responsibility to search for new therapeutic approaches. Our previous in silico drug screening identified entinostat as a drug hit that was predicted to reverse the ES disease signatures and EWS-FLI1-mediated gene signatures. Here, we establish preclinical proof of principle by investigating the in vitro and in vivo efficacy of entinostat in preclinical ES models, as well as characterizing the mechanisms of action and in vivo pharmacokinetics of entinostat. ES cells are preferentially sensitive to entinostat in an EWS-FLI1 or EWS-ERG-dependent manner. Entinostat induces apoptosis of ES cells through G0/G1 cell cycle arrest, intracellular reactive oxygen species (ROS) elevation, DNA damage, homologous recombination (HR) repair impairment, and caspase activation. Mechanistically, we demonstrate for the first time that HDAC3 is a transcriptional target of EWS-FLI1 and that entinostat inhibits growth of ES cells through suppressing a previously unexplored EWS-FLI1/HDAC3/HSP90 signaling axis. Importantly, entinostat significantly reduces tumor burden by 97.4% (89.5 vs. 3397.3 mm3 of vehicle, p < 0.001) and prolongs the median survival of mice (15.5 vs. 8.5 days of vehicle, p < 0.001), in two independent ES xenograft mouse models, respectively. Overall, our studies demonstrate promising activity of entinostat against ES, and support the clinical development of the entinostat-based therapies for children and young adults with metastatic/relapsed ES. KEY MESSAGES: • Entinostat potently inhibits ES both in vitro and in vivo. • EWS-FLI1 and EWS-ERG confer sensitivity to entinostat treatment. • Entinostat suppresses the EWS-FLI1/HDAC3/HSP90 signaling. • HDAC3 is a transcriptional target of EWS-FLI1. • HDAC3 is essential for ES cell viability and genomic stability maintenance.
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Affiliation(s)
- Yan Ma
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, 4005B Wahl Hall East, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA
| | - Michael Baltezor
- Lead Development Optimization Shared Resource, University of Kansas Cancer Center, Biotechnology Innovation and Optimization Center, Lawrence, KS, USA.,Institute for Advancing Medical Innovation, University of Kansas Medical Center, Kansas City, KS, USA
| | - Lian Rajewski
- Lead Development Optimization Shared Resource, University of Kansas Cancer Center, Biotechnology Innovation and Optimization Center, Lawrence, KS, USA
| | - Jennifer Crow
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, 4005B Wahl Hall East, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA
| | - Glenson Samuel
- Division of Hematology/Oncology, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Vincent S Staggs
- Health Services & Outcomes Research, Children's Mercy Kansas City and School of Medicine, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Katherine M Chastain
- Division of Hematology/Oncology, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Jeffrey A Toretsky
- Department of Oncology, Georgetown University Medical Center, Washington, D.C., USA
| | - Scott J Weir
- Institute for Advancing Medical Innovation, University of Kansas Medical Center, Kansas City, KS, USA.,Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.,University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS, USA
| | - Andrew K Godwin
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, 4005B Wahl Hall East, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA. .,University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS, USA.
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49
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Hou C, Rohr J, Parkin S, Tsodikov OV. How mithramycin stereochemistry dictates its structure and DNA binding function. MEDCHEMCOMM 2019; 10:735-741. [PMID: 31191864 DOI: 10.1039/c9md00100j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/28/2019] [Indexed: 12/16/2022]
Abstract
An aureolic acid natural product mithramycin (MTM) has been known for its potent antineoplastic properties. MTM inhibits cell growth by binding in the minor groove of double-stranded DNA as a dimer, in which the two molecules of MTM are coordinated to each other through a divalent metal ion. A crystal structure of an MTM analogue, MTM SA-Phe, in the active metal ion-coordinated dimeric form demonstrates how the stereochemical features of MTM define the helicity of the dimeric scaffold for its binding to a right-handed DNA double helix. We also show crystallographically and biochemically that MTM, but not MTM SA-Phe, can be inactivated by boric acid through formation of a large macrocyclic species, in which two molecules of MTM are crosslinked to each other through 3-side chain-boron-sugar intermolecular bonds. We discuss these structural and biochemical properties in the context of MTM biosynthesis and the design of MTM analogues as anticancer therapeutics.
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Affiliation(s)
- Caixia Hou
- University of Kentucky , Department of Pharmaceutical Sciences , College of Pharmacy , Lexington , KY 40536-0596 , USA . ;
| | - Jürgen Rohr
- University of Kentucky , Department of Pharmaceutical Sciences , College of Pharmacy , Lexington , KY 40536-0596 , USA . ;
| | - Sean Parkin
- University of Kentucky , Department of Chemistry , Lexington , KY 40506-0055 , USA .
| | - Oleg V Tsodikov
- University of Kentucky , Department of Pharmaceutical Sciences , College of Pharmacy , Lexington , KY 40536-0596 , USA . ;
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Depauw S, Lambert M, Jambon S, Paul A, Peixoto P, Nhili R, Morongiu L, Figeac M, Dassi C, Paul-Constant C, Billoré B, Kumar A, Farahat AA, Ismail MA, Mineva E, Sweat DP, Stephens CE, Boykin DW, Wilson WD, David-Cordonnier MH. Heterocyclic Diamidine DNA Ligands as HOXA9 Transcription Factor Inhibitors: Design, Molecular Evaluation, and Cellular Consequences in a HOXA9-Dependant Leukemia Cell Model. J Med Chem 2019; 62:1306-1329. [PMID: 30645099 PMCID: PMC6561105 DOI: 10.1021/acs.jmedchem.8b01448] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Most transcription factors were for a long time considered as undruggable targets because of the absence of binding pockets for direct targeting. HOXA9, implicated in acute myeloid leukemia, is one of them. To date, only indirect targeting of HOXA9 expression or multitarget HOX/PBX protein/protein interaction inhibitors has been developed. As an attractive alternative by inhibiting the DNA binding, we selected a series of heterocyclic diamidines as efficient competitors for the HOXA9/DNA interaction through binding as minor groove DNA ligands on the HOXA9 cognate sequence. Selected DB818 and DB1055 compounds altered HOXA9-mediated transcription in luciferase assays, cell survival, and cell cycle, but increased cell death and granulocyte/monocyte differentiation, two main HOXA9 functions also highlighted using transcriptomic analysis of DB818-treated murine Hoxa9-transformed hematopoietic cells. Altogether, these data demonstrate for the first time the propensity of sequence-selective DNA ligands to inhibit HOXA9/DNA binding both in vitro and in a murine Hoxa9-dependent leukemic cell model.
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Affiliation(s)
- Sabine Depauw
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Mélanie Lambert
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Samy Jambon
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Ananya Paul
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
| | - Paul Peixoto
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Raja Nhili
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Laura Morongiu
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Martin Figeac
- Functional and Structural Genomic Platform, Lille University, F-59000 Lille, France
| | - Christelle Dassi
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Charles Paul-Constant
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Benjamin Billoré
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
| | - Arvind Kumar
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
| | - Abdelbasset A. Farahat
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Mohamed A. Ismail
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Ekaterina Mineva
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
| | - Daniel P. Sweat
- Department of Chemistry and Physics, Augusta University, Augusta, GA 30904, United States
| | - Chad E. Stephens
- Department of Chemistry and Physics, Augusta University, Augusta, GA 30904, United States
| | - David W. Boykin
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
| | - W. David Wilson
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, United States
| | - Marie-Hélène David-Cordonnier
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, Institut pour la recherché sur le Cancer de Lille (IRCL), F-59045 Lille, France
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