1
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Atallah-Yunes SA, Habermann TM, Khurana A. Targeted therapy in Burkitt lymphoma: Small molecule inhibitors under investigation. Br J Haematol 2024; 204:2165-2172. [PMID: 38577716 DOI: 10.1111/bjh.19425] [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: 01/18/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/06/2024]
Abstract
Multiagent chemoimmunotherapy remains the standard of care treatment for Burkitt lymphoma leading to a cure in the majority of cases. However, frontline treatment regimens are associated with a significant risk of treatment related toxicity especially in elderly and immunocompromised patients. Additionally, prognosis remains dismal in refractory/relapsed Burkitt lymphoma. Thus, novel therapies are required to not only improve outcomes in relapsed/refractory Burkitt lymphoma but also minimize frontline treatment related toxicities. Recurrent genomic changes and signalling pathway alterations that have been implicated in the Burkitt lymphomagenesis include cell cycle dysregulation, cell proliferation, inhibition of apoptosis, epigenetic dysregulation and tonic B-cell receptor-phosphatidylinositol 3-kinase (BCR-PI3K) signalling. Here, we will discuss novel targeted therapy approaches using small molecule inhibitors that could pave the way to the future treatment landscape based on the understanding of recurrent genomic changes and signalling pathway alterations in the lymphomagenesis of adult Burkitt lymphoma.
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Affiliation(s)
| | - Thomas M Habermann
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Arushi Khurana
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
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2
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Marr AR, Halpin M, Corbin DL, Asemelash Y, Sher S, Gordon BK, Whipp EC, Mitchell S, Harrington BK, Orwick S, Benrashid S, Goettl VM, Yildiz V, Mitchell AD, Cahn O, Mims AS, Larkin KTM, Long M, Blachly J, Woyach JA, Lapalombella R, Grieselhuber NR. The multi-CDK inhibitor dinaciclib reverses bromo- and extra-terminal domain (BET) inhibitor resistance in acute myeloid leukemia via inhibition of Wnt/β-catenin signaling. Exp Hematol Oncol 2024; 13:27. [PMID: 38438856 PMCID: PMC10913666 DOI: 10.1186/s40164-024-00483-w] [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: 11/14/2023] [Accepted: 01/23/2024] [Indexed: 03/06/2024] Open
Abstract
Acute myeloid leukemia (AML) is a highly aggressive hematologic cancer with poor survival across a broad range of molecular subtypes. Development of efficacious and well-tolerable therapies encompassing the range of mutations that can arise in AML remains an unmet need. The bromo- and extra-terminal domain (BET) family of proteins represents an attractive therapeutic target in AML due to their crucial roles in many cellular functions, regardless of any specific mutation. Many BET inhibitors (BETi) are currently in pre-clinical and early clinical development, but acquisition of resistance continues to remain an obstacle for the drug class. Novel methods to circumvent this development of resistance could be instrumental for the future use of BET inhibitors in AML, both as monotherapy and in combination. To date, many investigations into possible drug combinations of BETi with CDK inhibitors have focused on CDK9, which has a known physical and functional interaction with the BET protein BRD4. Therefore, we wished to investigate possible synergy and additive effects between inhibitors of these targets in AML. Here, we describe combination therapy with the multi-CDK inhibitor dinaciclib and the BETi PLX51107 in pre-clinical models of AML. Dinaciclib and PLX51107 demonstrate additive effects in AML cell lines, primary AML samples, and in vivo. Further, we demonstrate novel activity of dinaciclib through inhibition of the canonical/β-catenin dependent Wnt signaling pathway, a known resistance mechanism to BETi in AML. We show dinaciclib inhibits Wnt signaling at multiple levels, including downregulation of β-catenin, the Wnt co-receptor LRP6, as well as many Wnt pathway components and targets. Moreover, dinaciclib sensitivity remains unaffected in a setting of BET resistance, demonstrating similar inhibitory effects on Wnt signaling when compared to BET-sensitive cells. Ultimately, our results demonstrate rationale for combination CDKi and BETi in AML. In addition, our novel finding of Wnt signaling inhibition could have potential implications in other cancers where Wnt signaling is dysregulated and demonstrates one possible approach to circumvent development of BET resistance in AML.
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Affiliation(s)
- Alexander R Marr
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Madeline Halpin
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Dominique L Corbin
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Yerdanos Asemelash
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Steven Sher
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Britten K Gordon
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Ethan C Whipp
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | | | | | - Shelley Orwick
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Samon Benrashid
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Virginia M Goettl
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Vedat Yildiz
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Andrew D Mitchell
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Olivia Cahn
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Alice S Mims
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Karilyn T M Larkin
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Meixao Long
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - James Blachly
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
- Leukemia Research Program, The Ohio State University James Comprehensive Cancer Center, Columbus, OH, USA
| | - Jennifer A Woyach
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
- Leukemia Research Program, The Ohio State University James Comprehensive Cancer Center, Columbus, OH, USA
| | - Rosa Lapalombella
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
- Leukemia Research Program, The Ohio State University James Comprehensive Cancer Center, Columbus, OH, USA
| | - Nicole R Grieselhuber
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.
- Leukemia Research Program, The Ohio State University James Comprehensive Cancer Center, Columbus, OH, USA.
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3
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Wang ZQ, Zhang ZC, Wu YY, Pi YN, Lou SH, Liu TB, Lou G, Yang C. Bromodomain and extraterminal (BET) proteins: biological functions, diseases, and targeted therapy. Signal Transduct Target Ther 2023; 8:420. [PMID: 37926722 PMCID: PMC10625992 DOI: 10.1038/s41392-023-01647-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 11/07/2023] Open
Abstract
BET proteins, which influence gene expression and contribute to the development of cancer, are epigenetic interpreters. Thus, BET inhibitors represent a novel form of epigenetic anticancer treatment. Although preliminary clinical trials have shown the anticancer potential of BET inhibitors, it appears that these drugs have limited effectiveness when used alone. Therefore, given the limited monotherapeutic activity of BET inhibitors, their use in combination with other drugs warrants attention, including the meaningful variations in pharmacodynamic activity among chosen drug combinations. In this paper, we review the function of BET proteins, the preclinical justification for BET protein targeting in cancer, recent advances in small-molecule BET inhibitors, and preliminary clinical trial findings. We elucidate BET inhibitor resistance mechanisms, shed light on the associated adverse events, investigate the potential of combining these inhibitors with diverse therapeutic agents, present a comprehensive compilation of synergistic treatments involving BET inhibitors, and provide an outlook on their future prospects as potent antitumor agents. We conclude by suggesting that combining BET inhibitors with other anticancer drugs and innovative next-generation agents holds great potential for advancing the effective targeting of BET proteins as a promising anticancer strategy.
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Affiliation(s)
- Zhi-Qiang Wang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Zhao-Cong Zhang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Yu-Yang Wu
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ya-Nan Pi
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Sheng-Han Lou
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Tian-Bo Liu
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Ge Lou
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China.
| | - Chang Yang
- Department of Gynecology Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China.
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4
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Ma T, Chen Y, Yi ZG, Li YH, Bai J, Li LJ, Zhang LS. BET in hematologic tumors: Immunity, pathogenesis, clinical trials and drug combinations. Genes Dis 2023; 10:2306-2319. [PMID: 37554207 PMCID: PMC10404881 DOI: 10.1016/j.gendis.2022.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/14/2022] [Accepted: 03/02/2022] [Indexed: 12/24/2022] Open
Abstract
The bromodomain and extra-terminal (BET) proteins act as "readers" for lysine acetylation and facilitate the recruitment of transcriptional elongation complexes. BET protein is associated with transcriptional elongation of genes such as c-MYC and BCL-2, and is involved in the regulation of cell cycle and apoptosis. Meanwhile, BET inhibitors (BETi) have regulatory effects on immune checkpoints, immune cells, and cytokine expression. The role of BET proteins and BETi in a variety of tumors has been studied. This paper reviews the recent research progress of BET and BETi in hematologic tumors (mainly leukemia, lymphoma and multiple myeloma) from cellular level studies, animal studies, clinical trials, drug combination, etc. BETi has a promising future in hematologic tumors, and future research directions may focus on the combination with other drugs to improve the efficacy.
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Affiliation(s)
- Tao Ma
- Department of Hematology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Yan Chen
- Department of Hematology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhi-Gang Yi
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Yan-Hong Li
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Jun Bai
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Li-Juan Li
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
| | - Lian-Sheng Zhang
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, China
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5
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Letson CT, Balasis ME, Newman H, Binder M, Vedder A, Kinose F, Ball M, Kruer T, Quintana A, Lasho TL, Finke CM, Almada LL, Grants JM, Zhang G, Fernandez-Zapico ME, Gaspar-Maia A, Lancet J, Komrokji R, Haura E, Sallman DA, Reuther GW, Karsan A, Rix U, Patnaik MM, Padron E. Targeting BET Proteins Downregulates miR-33a To Promote Synergy with PIM Inhibitors in CMML. Clin Cancer Res 2023; 29:2919-2932. [PMID: 37223910 PMCID: PMC10524644 DOI: 10.1158/1078-0432.ccr-22-3929] [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: 12/22/2022] [Revised: 04/19/2023] [Accepted: 05/19/2023] [Indexed: 05/25/2023]
Abstract
PURPOSE Preclinical studies in myeloid neoplasms have demonstrated efficacy of bromodomain and extra-terminal protein inhibitors (BETi). However, BETi demonstrates poor single-agent activity in clinical trials. Several studies suggest that combination with other anticancer inhibitors may enhance the efficacy of BETi. EXPERIMENTAL DESIGN To nominate BETi combination therapies for myeloid neoplasms, we used a chemical screen with therapies currently in clinical cancer development and validated this screen using a panel of myeloid cell line, heterotopic cell line models, and patient-derived xenograft models of disease. We used standard protein and RNA assays to determine the mechanism responsible for synergy in our disease models. RESULTS We identified PIM inhibitors (PIMi) as therapeutically synergistic with BETi in myeloid leukemia models. Mechanistically, we show that PIM kinase is increased after BETi treatment, and that PIM kinase upregulation is sufficient to induce persistence to BETi and sensitize cells to PIMi. Furthermore, we demonstrate that miR-33a downregulation is the underlying mechanism driving PIM1 upregulation. We also show that GM-CSF hypersensitivity, a hallmark of chronic myelomonocytic leukemia (CMML), represents a molecular signature for sensitivity to combination therapy. CONCLUSIONS Inhibition of PIM kinases is a potential novel strategy for overcoming BETi persistence in myeloid neoplasms. Our data support further clinical investigation of this combination.
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Affiliation(s)
| | | | - Hannah Newman
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Moritz Binder
- Division of Hematology, Mayo Clinic, Rochester, MN
- Epigenomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Alexis Vedder
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Fumi Kinose
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Markus Ball
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Traci Kruer
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Ariel Quintana
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Terra L. Lasho
- Epigenomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Christy M. Finke
- Epigenomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Luciana L. Almada
- Schulze Center for Novel Therapeutics, Division of Oncology Research, Department of Oncology, Mayo Clinic, Rochester, MN
| | | | - Guolin Zhang
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | | | - Alexandre Gaspar-Maia
- Division of Hematology, Mayo Clinic, Rochester, MN
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Jeffrey Lancet
- Malignant Hematology Department, Moffitt Cancer Center, Tampa, FL
| | - Rami Komrokji
- Malignant Hematology Department, Moffitt Cancer Center, Tampa, FL
| | - Eric Haura
- Department of Drug Discovery, H Lee Moffitt Cancer Center, Tampa, FL
| | - David A. Sallman
- Malignant Hematology Department, Moffitt Cancer Center, Tampa, FL
| | - Gary W. Reuther
- Department of Molecular Oncology, H Lee Moffitt Cancer Center, Tampa, FL
| | - Aly Karsan
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC
| | - Uwe Rix
- Department of Drug Discovery, H Lee Moffitt Cancer Center, Tampa, FL
| | - Mrinal M. Patnaik
- Division of Hematology, Mayo Clinic, Rochester, MN
- Epigenomics Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Eric Padron
- Malignant Hematology Department, Moffitt Cancer Center, Tampa, FL
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6
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Spriano F, Sartori G, Tarantelli C, Barreca M, Golino G, Rinaldi A, Napoli S, Mascia M, Scalise L, Arribas AJ, Cascione L, Zucca E, Stathis A, Gaudio E, Bertoni F. Pharmacologic screen identifies active combinations with BET inhibitors and LRRK2 as a novel putative target in lymphoma. EJHAEM 2022; 3:764-774. [PMID: 36051080 PMCID: PMC9422027 DOI: 10.1002/jha2.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/26/2022]
Abstract
Inhibitors of the Bromo‐ and Extra‐Terminal domain (BET) family proteins have strong preclinical antitumor activity in multiple tumor models, including lymphomas. Limited single‐agent activity has been reported in the clinical setting. Here, we have performed a pharmacological screening to identify compounds that can increase the antitumor activity of BET inhibitors in lymphomas. The germinal center B‐cell like diffuse large B‐cell lymphoma (DLBCL) cell lines OCI‐LY‐19 and WSU‐DLCL2 were exposed to 348 compounds given as single agents at two different concentrations and in combination with the BET inhibitor birabresib. The combination partners included small molecules targeting important biologic pathways such as PI3K/AKT/MAPK signaling and apoptosis, approved anticancer agents, kinase inhibitors, epigenetic compounds. The screening identified a series of compounds leading to a stronger antiproliferative activity when given in combination than as single agents: the histone deacetylase (HDAC) inhibitors panobinostat and dacinostat, the mTOR (mechanistic target of rapamycin) inhibitor everolimus, the ABL/SRC (ABL proto‐oncogene/SRC proto oncogene) inhibitor dasatinib, the AKT1/2/3 inhibitor MK‐2206, the JAK2 inhibitor TG101209. The novel finding was the benefit given by the addition of the LRRK2 inhibitor LRRK2‐IN‐1, which was validated in vitro and in vivo. Genetic silencing demonstrated that LRRK2 sustains the proliferation of lymphoma cells, a finding paired with the association between high expression levels and inferior outcome in DLBCL patients. We identified combinations that can improve the response to BET inhibitors in lymphomas, and LRRK2 as a gene essential for lymphomas and as putative novel target for this type of tumors.
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Affiliation(s)
- Filippo Spriano
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Giulio Sartori
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Chiara Tarantelli
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Marilia Barreca
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF) University of Palermo Palermo Italy
| | - Gaetanina Golino
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Andrea Rinaldi
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Sara Napoli
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Michele Mascia
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Lorenzo Scalise
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Alberto J. Arribas
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
- SIB Swiss Institute of Bioinformatics Lausanne Switzerland
| | - Luciano Cascione
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
- SIB Swiss Institute of Bioinformatics Lausanne Switzerland
| | - Emanuele Zucca
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
- Department of Oncology Oncology Institute of Southern Switzerland Ente Ospedaliero Cantonale Bellinzona Switzerland
| | - Anastasios Stathis
- Department of Oncology Oncology Institute of Southern Switzerland Ente Ospedaliero Cantonale Bellinzona Switzerland
- Faculty of Biomedical Sciences Università della Svizzera Italiana Lugano Switzerland
| | - Eugenio Gaudio
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
| | - Francesco Bertoni
- Institute of Oncology Research Faculty of Biomedical Sciences Università della Svizzera Italiana Bellinzona Switzerland
- Department of Oncology Oncology Institute of Southern Switzerland Ente Ospedaliero Cantonale Bellinzona Switzerland
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7
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Malenge MM, Maaland AF, Repetto-Llamazares A, Middleton B, Nijland M, Visser L, Patzke S, Heyerdahl H, Kolstad A, Stokke T, Ree AH, Dahle J. Anti-CD37 radioimmunotherapy with 177Lu-NNV003 synergizes with the PARP inhibitor olaparib in treatment of non-Hodgkin’s lymphoma in vitro. PLoS One 2022; 17:e0267543. [PMID: 35486574 PMCID: PMC9053826 DOI: 10.1371/journal.pone.0267543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 04/11/2022] [Indexed: 11/18/2022] Open
Abstract
Background and purpose
PARP inhibitors have been shown to increase the efficacy of radiotherapy in preclinical models. Radioimmunotherapy results in selective radiation cytotoxicity of targeted tumour cells. Here we investigate the combined effect of anti-CD37 β-emitting 177Lu-NNV003 radioimmunotherapy and the PARP inhibitor olaparib, and gene expression profiles in CD37 positive non-Hodgkin’s lymphoma cell lines.
Materials and methods
The combined effect of 177Lu-NNV003 and olaparib was studied in seven cell lines using a fixed-ratio ray design, and combination index was calculated for each combination concentration. mRNA was extracted before and after treatment with the drug combination. After RNA-sequencing, hierarchical clustering was performed on basal gene expression profiles and on differentially expressed genes after combination treatment from baseline. Functional gene annotation analysis of significant differentially expressed genes after combination treatment was performed to identify enriched biological processes.
Results
The combination of olaparib and 177Lu-NNV003 was synergistic in four of seven cell lines, antagonistic in one and both synergistic and antagonistic (conditionally synergistic) in two, depending on the concentration ratio between olaparib and 177Lu-NNV003. Cells treated with the combination significantly overexpressed genes in the TP53 signalling pathway. However, cluster analysis did not identify gene clusters that correlate with the sensitivity of cells to single agent or combination treatment.
Conclusion
The cytotoxic effect of the combination of the PARP inhibitor olaparib and the β-emitting radioimmunoconjugate 177Lu-NNV003 was synergistic in the majority of tested lymphoma cell lines.
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Affiliation(s)
- Marion M. Malenge
- Nordic Nanovector ASA, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Astri Fjelde Maaland
- Nordic Nanovector ASA, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | | | - Marcel Nijland
- University Medical Center Groningen, Groningen, The Netherlands
| | - Lydia Visser
- University Medical Center Groningen, Groningen, The Netherlands
| | - Sebastian Patzke
- Nordic Nanovector ASA, Oslo, Norway
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | | | - Arne Kolstad
- Department of Oncology, Innlandet Sykehus, Lillehammer, Norway
| | - Trond Stokke
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Anne Hansen Ree
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Oncology, Akershus University Hospital, Lørenskog, Norway
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8
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Lu X, Hackman GL, Saha A, Rathore AS, Collins M, Friedman C, Yi SS, Matsuda F, DiGiovanni J, Lodi A, Tiziani S. Metabolomics-based phenotypic screens for evaluation of drug synergy via direct-infusion mass spectrometry. iScience 2022; 25:104221. [PMID: 35494234 PMCID: PMC9046262 DOI: 10.1016/j.isci.2022.104221] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/22/2022] [Accepted: 04/05/2022] [Indexed: 12/15/2022] Open
Abstract
Drugs used in combination can synergize to increase efficacy, decrease toxicity, and prevent drug resistance. While conventional high-throughput screens that rely on univariate data are incredibly valuable to identify promising drug candidates, phenotypic screening methodologies could be beneficial to provide deep insight into the molecular response of drug combination with a likelihood of improved clinical outcomes. We developed a high-content metabolomics drug screening platform using stable isotope-tracer direct-infusion mass spectrometry that informs an algorithm to determine synergy from multivariate phenomics data. Using a cancer drug library, we validated the drug screening, integrating isotope-enriched metabolomics data and computational data mining, on a panel of prostate cell lines and verified the synergy between CB-839 and docetaxel both in vitro (three-dimensional model) and in vivo. The proposed unbiased metabolomics screening platform can be used to rapidly generate phenotype-informed datasets and quantify synergy for combinatorial drug discovery.
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Affiliation(s)
- Xiyuan Lu
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - G. Lavender Hackman
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Achinto Saha
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin,TX 78712, USA
| | - Atul Singh Rathore
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Meghan Collins
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA
| | - Chelsea Friedman
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin,TX 78712, USA
| | - S. Stephen Yi
- Department of Oncology, Dell Medical School, Livestrong Cancer Institutes, The University of Texas at Austin, Austin, TX 78723, USA,Institute for Cellular and Molecular Biology (ICMB), College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX 78712, USA,Oden Institute for Computational Engineering and Sciences (ICES), The University of Texas at Austin, Austin, TX 78712, USA
| | - Fumio Matsuda
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - John DiGiovanni
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA,Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin,TX 78712, USA,Department of Oncology, Dell Medical School, Livestrong Cancer Institutes, The University of Texas at Austin, Austin, TX 78723, USA
| | - Alessia Lodi
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA,Corresponding author
| | - Stefano Tiziani
- Department of Nutritional Sciences, College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX 78723, USA,Department of Oncology, Dell Medical School, Livestrong Cancer Institutes, The University of Texas at Austin, Austin, TX 78723, USA,Institute for Cellular and Molecular Biology (ICMB), College of Natural Sciences, The University of Texas at Austin, Austin, TX 78712, USA,Corresponding author
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9
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Borowczak J, Szczerbowski K, Ahmadi N, Szylberg Ł. CDK9 inhibitors in multiple myeloma: a review of progress and perspectives. Med Oncol 2022; 39:39. [PMID: 35092513 PMCID: PMC8800928 DOI: 10.1007/s12032-021-01636-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/21/2021] [Indexed: 12/05/2022]
Abstract
Currently, multiple myeloma is not yet considered a curable disease. Despite the recent advances in therapy, the average patient lifespan is still unsatisfactory. Recently, CDK9 inhibitors emerged as a suitable agent to overcome resistance and prolong survival in patients with poor diagnoses. Downregulation of c-MYC, XIAP, Mcl-1 and restoration of p53 tumor-suppressive functions seems to play a key role in achieving clinical response. The applicability of the first generation of CDK9 inhibitors was limited due to relatively high toxicity, but the introduction of novel, highly selective drugs, seems to reduce the effects of off-target inhibition. CDK9 inhibitors were able to induce dose-dependent cytotoxicity in Doxorubicin-resistant, Lenalidomide-resistant and Bortezomib-resistant cell lines. They seem to be effective in cell lines with unfavorable prognostic factors, such as p53 deletion, t(4; 14) and t(14; 16). In preclinical trials, the application of CDK9 inhibitors led to tumor cells apoptosis, tumor growth inhibition and tumor mass reduction. Synergistic effects between CDK9 inhibitors and either Venetoclax, Bortezomib, Lenalidomide or Erlotinib have been proven and are awaiting verification in clinical trials. Although conclusions should be drawn with due care, obtained reports suggest that including CDK9 inhibitors into the current drug regimen may turn out to be beneficial, especially in poor prognosis patients.
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Affiliation(s)
- Jędrzej Borowczak
- Department of Clinical Pathomorphology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland.
| | - Krzysztof Szczerbowski
- Department of Clinical Pathomorphology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Navid Ahmadi
- Department of Cardiothoracic Surgery, Royal Papworth Hospital, Cambridge, UK
| | - Łukasz Szylberg
- Department of Clinical Pathomorphology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
- Department of Tumor Pathology and Pathomorphology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
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10
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Lap CJ, Nassereddine S, Dunleavy K. Novel Biological Insights and New Developments in Management of Burkitt Lymphoma and High-Grade B-Cell Lymphoma. Curr Treat Options Oncol 2021; 22:60. [PMID: 34097157 DOI: 10.1007/s11864-021-00857-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2021] [Indexed: 12/16/2022]
Abstract
OPINION STATEMENT Burkitt lymphoma (BL) is highly curable, and prompt institution of therapy is critical to achieving optimal outcomes. Although current "standard" approaches are very effective in disease eradication, treatment-related toxicity makes optimal delivery of curative therapy a challenge, especially in older and immunocompromised individuals. Reduced intensity approaches with fewer toxic complications have been the focus of some recent studies. A critical question is if they can replace "standard" approaches by maintaining high curability with improved tolerability. Additionally, new molecular insights in BL biology suggest that in the future, "targeted therapy" approaches may be feasible using small molecule inhibitors and novel strategies. Recently, a new category of aggressive lymphoma named "high-grade B-cell lymphoma (HGBL) with MYC and BCL2 and/or BCL6 translocations" has been recognized. This category overlaps clinically and biologically with BL and has an inferior prognosis compared to most B-cell lymphomas, and the optimal approach to its management remains, as yet, undefined. In this review, we discuss the current landscape of BL treatment including recent results with low-intensity regimens and also consider current approaches to HGBL. We also explore how recently elucidated novel biological insights in BL biology may shape future therapeutic directions including the use of novel cellular therapy approaches.
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Affiliation(s)
- Coen J Lap
- Department of Hematology and Oncology, Medical Faculty Associates, George Washington University, Washington, DC, USA
- The George Washington University School of Medicine, Washington, DC, USA
| | - Samah Nassereddine
- Department of Hematology and Oncology, Medical Faculty Associates, George Washington University, Washington, DC, USA
- The George Washington University School of Medicine, Washington, DC, USA
| | - Kieron Dunleavy
- Division of Hematology-Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Hospital, Washington, DC, USA.
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11
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Wang Z, Chen M, Fang X, Hong H, Yao Y, Huang H. KIF15 is involved in development and progression of Burkitt lymphoma. Cancer Cell Int 2021; 21:261. [PMID: 33985517 PMCID: PMC8117549 DOI: 10.1186/s12935-021-01967-z] [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: 01/14/2020] [Accepted: 04/30/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Burkitt lymphoma (BL) is a highly aggressive, fast-growing B-cell non-Hodgkin's lymphoma, manifested in several subtypes, including sporadic, endemic, and immunodeficiency-related forms, the mechanism of which is still not clear. Abundant evidence reported that KIF15 was involved in the progression of human cancer. The emphasis of this study is to explore the functions of KIF15 in the development of BL. METHODS Firstly, tumor and normal tissues were collected for detecting expression of KIF15 in BL. Lentivirus-mediated shRNA knockdown of KIF15 was used to construct BL cell model, which was verified by qRT-PCR and Western Blot. The cell proliferation was detected by CCK8 assay, cell apoptosis and cell cycle were measured through flow cytometry. Transwell assay was conducted to detect the migration. RESULTS We first found that KIF15 is highly expressed in BL. Knockdown of KIF15 can inhibit proliferation and migration, promote apoptosis and arrest the cell cycle. Moreover, KIF15 is involved in BL cell activity through regulating expression of apoptosis-related proteins (Caspase3, Caspase8, HTRA, IGFBP-6, p53, SMAC, sTNF-R1, TNF-β and Bcl-2) and downstream pathways, such as p-Akt, CCND1, CDK6 and PIK3CA. CONCLUSIONS These findings justify the search for small molecule inhibitors targeting KIF15 as a novel therapeutic strategy in BL.
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Affiliation(s)
- Zhao Wang
- Department of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in Southern China, and Collaborative Innovation Center of Cancer Medicine, 651 Dong feng East Road, Guangzhou, 510060, Guangdong, China
| | - Meiting Chen
- Department of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in Southern China, and Collaborative Innovation Center of Cancer Medicine, 651 Dong feng East Road, Guangzhou, 510060, Guangdong, China
| | - Xiaojie Fang
- Department of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in Southern China, and Collaborative Innovation Center of Cancer Medicine, 651 Dong feng East Road, Guangzhou, 510060, Guangdong, China
| | - Huangming Hong
- Department of Medical Oncology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, 107 Yanjiang West Road, Guangzhou, 510120, Guangdong, China
| | - Yuyi Yao
- Department of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in Southern China, and Collaborative Innovation Center of Cancer Medicine, 651 Dong feng East Road, Guangzhou, 510060, Guangdong, China
| | - He Huang
- Department of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in Southern China, and Collaborative Innovation Center of Cancer Medicine, 651 Dong feng East Road, Guangzhou, 510060, Guangdong, China.
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12
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Spriano F, Stathis A, Bertoni F. Targeting BET bromodomain proteins in cancer: The example of lymphomas. Pharmacol Ther 2020; 215:107631. [PMID: 32693114 DOI: 10.1016/j.pharmthera.2020.107631] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/15/2020] [Indexed: 12/12/2022]
Abstract
The Bromo- and Extra-Terminal domain (BET) family proteins act as "readers" of acetylated histones and they are important transcription regulators. BRD2, BRD3, BRD4 and BRDT, part of the BET family, are important in different tumors, where upregulation or translocation often occurs. The potential of targeting BET proteins as anti-cancer treatment originated with data obtained with a first series of compounds, and there are now several data supporting BET inhibition in both solid tumors and hematological malignancies. Despite very positive preclinical data in different tumor types, the clinical results have been so far moderate. Using lymphoma as an example to review the data produced in the laboratory and in the context of the early clinical trials, we discuss the modalities to make BET targeting more efficient both generating novel generation of compounds and by exploring the combination with small molecules affecting various signaling pathways, BCL2, or DNA damage response signaling, but also with additional epigenetic agents and with immunotherapy. We also discuss the mechanisms of resistance and the toxicity profiles so far reported.
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Affiliation(s)
- Filippo Spriano
- Institute of Oncology Research, Faculty of Biomedical Sciences, USI, Bellinzona, Switzerland
| | - Anastasios Stathis
- Oncology Institute of Southern Switzerland, Bellinzona, Switzerland; Faculty of Biomedical Sciences, USI, Lugano, Switzerland
| | - Francesco Bertoni
- Institute of Oncology Research, Faculty of Biomedical Sciences, USI, Bellinzona, Switzerland; Oncology Institute of Southern Switzerland, Bellinzona, Switzerland.
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13
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Folkesson E, Niederdorfer B, Nakstad VT, Thommesen L, Klinkenberg G, Lægreid A, Flobak Å. High-throughput screening reveals higher synergistic effect of MEK inhibitor combinations in colon cancer spheroids. Sci Rep 2020; 10:11574. [PMID: 32665693 PMCID: PMC7360566 DOI: 10.1038/s41598-020-68441-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 06/19/2020] [Indexed: 11/27/2022] Open
Abstract
Drug combinations have been proposed to combat drug resistance, but putative treatments are challenged by low bench-to-bed translational efficiency. To explore the effect of cell culture format and readout methods on identification of synergistic drug combinations in vitro, we studied response to 21 clinically relevant drug combinations in standard planar (2D) layouts and physiologically more relevant spheroid (3D) cultures of HCT-116, HT-29 and SW-620 cells. By assessing changes in viability, confluency and spheroid size, we were able to identify readout- and culture format-independent synergies, as well as synergies specific to either culture format or readout method. In particular, we found that spheroids, compared to 2D cultures, were generally both more sensitive and showed greater synergistic response to combinations involving a MEK inhibitor. These results further shed light on the importance of including more complex culture models in order to increase the efficiency of drug discovery pipelines.
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Affiliation(s)
- Evelina Folkesson
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Barbara Niederdorfer
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Vu To Nakstad
- Department of Biotechnology, SINTEF Materials and Chemistry, Trondheim, Norway
| | - Liv Thommesen
- Department of Biomedical Laboratory Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Geir Klinkenberg
- Department of Biotechnology, SINTEF Materials and Chemistry, Trondheim, Norway
| | - Astrid Lægreid
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Åsmund Flobak
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway. .,The Cancer Clinic, St Olav's University Hospital, Trondheim, Norway.
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14
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Zayac AS, Olszewski AJ. Burkitt lymphoma: bridging the gap between advances in molecular biology and therapy. Leuk Lymphoma 2020; 61:1784-1796. [PMID: 32255708 DOI: 10.1080/10428194.2020.1747068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Genomic studies have revealed molecular mechanisms involved in the pathogenesis of Burkitt's lymphoma, including the ID3/TCF3-dependent centroblast gene expression program, tonic PI3K-AKT-mTOR signaling, and deregulation of cell cycle and apoptosis through mutations in cyclin D3, CDKN2A, or TP53. Unfortunately, these advances have not been translated into treatment, which relies on dose-intense cytotoxic chemotherapy. While most patients achieve long-term survival, options for relapsed/refractory disease are lacking, as Burkitt lymphoma is often excluded from clinical trials of novel approaches. The lower-intensity, dose-adjusted EPOCH plus rituximab (DA-EPOCH-R) regimen constitutes a major advance allowing for treatment of older and HIV-positive patients but needs augmentation to better address the central nervous system involvement. Furthermore, DA-EPOCH-R provides a platform for the study of targeted or immunotherapeutic approaches while de-escalating cytotoxic agents and their associated adverse effects. In this review we discuss the epidemiology and molecular genetics of BL, first-line treatment considerations, and potential novel treatment strategies.
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Affiliation(s)
- Adam S Zayac
- The Warren Alpert Medical School of Brown University, Providence, RI, USA.,Division of Hematology-Oncology, Rhode Island Hospital, Providence, RI, USA
| | - Adam J Olszewski
- The Warren Alpert Medical School of Brown University, Providence, RI, USA.,Division of Hematology-Oncology, Rhode Island Hospital, Providence, RI, USA
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15
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GCN5 HAT inhibition reduces human Burkitt lymphoma cell survival through reduction of MYC target gene expression and impeding BCR signaling pathways. Oncotarget 2019; 10:5847-5858. [PMID: 31645904 PMCID: PMC6791378 DOI: 10.18632/oncotarget.27226] [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: 07/09/2019] [Accepted: 09/10/2019] [Indexed: 12/14/2022] Open
Abstract
GCN5, the catalytic subunit in the acetyltransferase modules of SAGA and ATAC, functions as a coactivator of gene transcription. The SAGA complex is recruited to chromatin by transcription factors such as MYC and E2F1 to facilitate acetylation of histones, especially H3 at lysine 9 (H3K9). Burkitt lymphoma is an aggressive subtype of Non-Hodgkin lymphoma driven by the overexpression of MYC. Comparison of GCN5 expression in normal human B cells versus human Burkitt Lymphoma cell lines indicates overexpression of GCN5 in lymphoma. Treatment of Burkitt lymphoma cell lines with a specific inhibitor indicates that decreased GCN5 HAT activity reduces viability and proliferation of these cells. Inhibition of GCN5 HAT activity also induces apoptosis in lymphoma cells. Expression of MYC target genes as well as genes associated with B cell receptor signaling are significantly downregulated upon inhibition of GCN5 enzymatic activity. This downregulation leads to diminished PI3K signaling, a critical pathway in lymphomagenesis. Our data indicate that inhibition of GCN5 HAT activity reduces the tumorigenic properties of human Burkitt lymphoma cells by attenuating BCR signaling and that GCN5 may be a viable target for lymphoma drug therapy.
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16
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Reyes-Garau D, Ribeiro ML, Roué G. Pharmacological Targeting of BET Bromodomain Proteins in Acute Myeloid Leukemia and Malignant Lymphomas: From Molecular Characterization to Clinical Applications. Cancers (Basel) 2019; 11:cancers11101483. [PMID: 31581671 PMCID: PMC6826405 DOI: 10.3390/cancers11101483] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/27/2019] [Accepted: 09/30/2019] [Indexed: 12/16/2022] Open
Abstract
Alterations in protein-protein and DNA-protein interactions and abnormal chromatin remodeling are a major cause of uncontrolled gene transcription and constitutive activation of critical signaling pathways in cancer cells. Multiple epigenetic regulators are known to be deregulated in several hematologic neoplasms, by somatic mutation, amplification, or deletion, allowing the identification of specific epigenetic signatures, but at the same time providing new therapeutic opportunities. While these vulnerabilities have been traditionally addressed by hypomethylating agents or histone deacetylase inhibitors, pharmacological targeting of bromodomain-containing proteins has recently emerged as a promising approach in a number of lymphoid and myeloid malignancies. Indeed, preclinical and clinical studies highlight the relevance of targeting the bromodomain and extra-terminal (BET) family as an efficient strategy of target transcription irrespective of the presence of epigenetic mutations. Here we will summarize the main advances achieved in the last decade regarding the preclinical and clinical evaluation of BET bromodomain inhibitors in hematologic cancers, either as monotherapies or in combinations with standard and/or experimental agents. A mention will finally be given to the new concept of the protein degrader, and the perspective it holds for the design of bromodomain-based therapies.
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Affiliation(s)
- Diana Reyes-Garau
- Laboratory of Experimental Hematology, Department of Hematology, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital, Autonomous University of Barcelona, 08035 Barcelona, Spain.
| | - Marcelo L Ribeiro
- Laboratory of Experimental Hematology, Department of Hematology, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital, Autonomous University of Barcelona, 08035 Barcelona, Spain.
- Laboratory of Immunopharmacology and Molecular Biology, Sao Francisco University Medical School, Braganca Paulista, São Paulo 12916-900, Brazil.
| | - Gaël Roué
- Laboratory of Experimental Hematology, Department of Hematology, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital, Autonomous University of Barcelona, 08035 Barcelona, Spain.
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17
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Takashima Y, Kikuchi E, Kikuchi J, Suzuki M, Kikuchi H, Maeda M, Shoji T, Furuta M, Kinoshita I, Dosaka‐Akita H, Sakakibara‐Konishi J, Konno S. Bromodomain and extraterminal domain inhibition synergizes with WEE1‐inhibitor AZD1775 effect by impairing nonhomologous end joining and enhancing DNA damage in nonsmall cell lung cancer. Int J Cancer 2019; 146:1114-1124. [DOI: 10.1002/ijc.32515] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 04/26/2019] [Accepted: 06/03/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Yuta Takashima
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Eiki Kikuchi
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Junko Kikuchi
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Motofumi Suzuki
- Laboratory for Bioanalysis and Molecular ImagingGraduate School of Pharmaceutical Sciences, Hokkaido University Sapporo Japan
| | - Hajime Kikuchi
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
- First Department of MedicineJA Obihiro Kosei Hospital Obihiro Japan
| | - Makie Maeda
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Tetsuaki Shoji
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Megumi Furuta
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Ichiro Kinoshita
- Department of Medical Oncology, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Hirotoshi Dosaka‐Akita
- Department of Medical Oncology, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Jun Sakakibara‐Konishi
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of MedicineHokkaido University Sapporo Japan
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18
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Abstract
PURPOSE OF REVIEW Pharmacological inhibition of Bromodomain and Extra-Terminal (BET) domain proteins is a very exciting epigenetic therapeutic modality. Due to the central role of BET proteins in transcription regulation, their inhibition heavily affects lymphoma cells and BET inhibitors show a clear preclinical antitumor activity as single agents and in combination, paired with early reports of clinical activity. RECENT FINDINGS Relevant data have been recently presented on the mechanism of action of the BET inhibitors, on modalities to improve their activity in lymphomas, and their clinical evaluation. SUMMARY There are now plenty of preclinical data sustaining BET proteins as therapeutic targets in lymphomas. Newer compounds and combinations with other agents may be pursued in the future aiming also to identify those patients that they most likely benefit from BET inhibition.
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19
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A unique genome in EBV-positive BL. Blood 2019; 133:1269-1270. [DOI: 10.1182/blood-2019-01-897603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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20
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Manzotti G, Ciarrocchi A, Sancisi V. Inhibition of BET Proteins and Histone Deacetylase (HDACs): Crossing Roads in Cancer Therapy. Cancers (Basel) 2019; 11:cancers11030304. [PMID: 30841549 PMCID: PMC6468908 DOI: 10.3390/cancers11030304] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/18/2019] [Accepted: 02/26/2019] [Indexed: 12/14/2022] Open
Abstract
Histone DeACetylases (HDACs) are enzymes that remove acetyl groups from histones and other proteins, regulating the expression of target genes. Pharmacological inhibition of these enzymes re-shapes chromatin acetylation status, confusing boundaries between transcriptionally active and quiescent chromatin. This results in reinducing expression of silent genes while repressing highly transcribed genes. Bromodomain and Extraterminal domain (BET) proteins are readers of acetylated chromatin status and accumulate on transcriptionally active regulatory elements where they serve as scaffold for the building of transcription-promoting complexes. The expression of many well-known oncogenes relies on BET proteins function, indicating BET inhibition as a strategy to counteract their activity. BETi and HDACi share many common targets and affect similar cellular processes to the point that combined inhibition of both these classes of proteins is regarded as a strategy to improve the effectiveness of these drugs in cancer. In this work, we aim to discuss the molecular basis of the interplay between HDAC and BET proteins, pointing at chromatin acetylation as a crucial node of their functional interaction. We will also describe the state of the art of their dual inhibition in cancer therapy. Finally, starting from their mechanism of action we will provide a speculative perspective on how these drugs may be employed in combination with standard therapies to improve effectiveness and/or overcome resistance.
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Affiliation(s)
- Gloria Manzotti
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy.
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy.
| | - Valentina Sancisi
- Laboratory of Translational Research, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, 42122 Reggio Emilia, Italy.
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