1
|
Gawne PJ, Bryant HE, DuBois SG, George SL, Gray J, Knox L, Matchett KB, Peet C, Vallis KA, Wallace HJ, Wan S, Gaze MN. Theranostics for Neuroblastoma: Making Molecular Radiotherapy Work Better. J Nucl Med 2025; 66:490-496. [PMID: 39978816 PMCID: PMC11960609 DOI: 10.2967/jnumed.124.269121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2024] [Accepted: 01/17/2025] [Indexed: 02/22/2025] Open
Abstract
Despite improvements in neuroblastoma treatment, survival figures lag behind those of many other childhood malignancies. New treatments, and better use of existing treatments, are essential to reduce mortality. Neuroblastoma expresses several molecular targets for radionuclide imaging and therapy, of which the most widely exploited is the norepinephrine transporter. [123I]metaiodobenzylguanidine (MIBG) imaging and [131I]MIBG treatment, which target this physiologic pathway, have been in clinical practice for 40 y. Although therapy outcomes have been favorable, [131I]MIBG use has not yet been optimized. Somatostatin receptors and the disialoganglioside are alternative targets, but their use remains experimental. The charity Children's Cancer Research Fund organized a workshop bringing together a broad range of scientists including radiochemists, radiobiologists, radiation physicists, clinical researchers including pediatric oncologists and nuclear medicine physicians, and patient advocates from the United Kingdom, United States, and continental Europe to share their experiences with molecular imaging and radiotherapy of neuroblastoma and discuss potential ways of improving treatment outcomes and access. These include development of alternative vectors targeting somatostatin receptors and disialoganglioside, isotopes such as α-particle and Auger electron emitters with different radiation characteristics, and combinations with external-beam radiotherapy, immunotherapy, and DNA damage repair inhibitors. Barriers to progress discussed included the unpredictable radioisotope supply, production of novel radiopharmaceuticals, lack of data regarding which are the best combination therapies, and insufficient clinical facilities. The aim was to stimulate the development and assessment of more effective treatments.
Collapse
Affiliation(s)
- Peter J Gawne
- Centre for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute, Queen Mary, University of London, London, United Kingdom
- UCL Cancer Institute, University College London, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Helen E Bryant
- School of Medicine and Population Health, University of Sheffield, Sheffield, United Kingdom
| | - Steven G DuBois
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts
| | - Sally L George
- Division of Clinical Studies, Institute of Cancer Research, London, United Kingdom
- Children and Young People's Unit, Royal Marsden Hospital, London, United Kingdom
| | - Juliet Gray
- Centre for Cancer Immunology, University of Southampton, Southampton, United Kingdom
| | - Leona Knox
- Solving Kids' Cancer, London, United Kingdom
| | - Kyle B Matchett
- Personalised Medicine Centre and Clinical Translational Research and Innovation Centre, Altnagelvin Area Hospital, School of Medicine, Ulster University, Derry-Londonderry, United Kingdom
| | - Connie Peet
- Department of Radiotherapy, University College London Hospitals NHS Foundation Trust, London, United Kingdom
| | | | - Hugh J Wallace
- Paediatric Nuclear Medicine, Royal Hospital for Children, Glasgow, United Kingdom
- Department of Clinical Physics and Bioengineering, NHS Greater Glasgow and Clyde, Glasgow, United Kingdom
- University of Glasgow, Glasgow, United Kingdom
| | - Simon Wan
- Institute of Nuclear Medicine, University College London Hospitals NHS Foundation Trust/University College London, London, United Kingdom; and
| | - Mark N Gaze
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, United Kingdom @ucl.ac.uk
| |
Collapse
|
2
|
Banerjee D, Boboila S, Okochi S, Angelastro JM, Kadenhe-Chiweshe AV, Lopez G, Califano A, Connolly EP, Greene LA, Yamashiro DJ. Activating Transcription Factor 5 Promotes Neuroblastoma Metastasis by Inducing Anoikis Resistance. CANCER RESEARCH COMMUNICATIONS 2023; 3:2518-2530. [PMID: 38014922 PMCID: PMC10714915 DOI: 10.1158/2767-9764.crc-23-0154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/20/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023]
Abstract
MYCN-amplified neuroblastoma often presents as a highly aggressive metastatic disease with a poor prognosis. Activating transcription factor 5 (ATF5) is implicated in neural cell differentiation and cancer cell survival. Here, we show that ATF5 is highly expressed in patients with stage 4 high-risk neuroblastoma, with increased expression correlating with a poorer prognosis. We demonstrated that ATF5 promotes the metastasis of neuroblastoma cell lines in vivo. Functionally, ATF5 depletion significantly reduced xenograft tumor growth and metastasis of neuroblastoma cells to the bone marrow and liver. Mechanistically, ATF5 endows tumor cells with resistance to anoikis, thereby increasing their survival in systemic circulation and facilitating metastasis. We identified the proapoptotic BCL-2 modifying factor (BMF) as a critical player in ATF5-regulated neuroblastoma anoikis. ATF5 suppresses BMF under suspension conditions at the transcriptional level, promoting anoikis resistance, whereas BMF knockdown significantly prevents ATF5 depletion-induced anoikis. Therapeutically, we showed that a cell-penetrating dominant-negative ATF5 peptide, CP-d/n-ATF5, inhibits neuroblastoma metastasis to the bone marrow and liver by inducing anoikis sensitivity in circulating tumor cells. Our study identified ATF5 as a metastasis promoter and CP-d/n-ATF5 as a potential antimetastatic therapeutic agent for neuroblastoma. SIGNIFICANCE This study shows that resistance to anoikis in neuroblastoma is mediated by ATF5 and offers a rationale for targeting ATF5 to treat metastatic neuroblastoma.
Collapse
Affiliation(s)
- Debarshi Banerjee
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
| | - Shuobo Boboila
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, New York
| | - Shunpei Okochi
- Department of Surgery, Columbia University Irving Medical Center, New York, New York
| | - James M. Angelastro
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California
| | | | - Gonzalo Lopez
- Department of Systems Biology, Columbia University Irving Medical Center, New York, New York
| | - Andrea Califano
- Department of Systems Biology, Columbia University Irving Medical Center, New York, New York
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York
| | - Eileen P. Connolly
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, New York
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York
| | - Lloyd A. Greene
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Darrell J. Yamashiro
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| |
Collapse
|
3
|
Neuroblastoma: Essential genetic pathways and current therapeutic options. Eur J Pharmacol 2022; 926:175030. [DOI: 10.1016/j.ejphar.2022.175030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 12/29/2022]
|
4
|
Qian R, Wang K, Guo Y, Li H, Zhu Z, Huang X, Gong C, Gao Y, Guo R, Yang B, Wang C, Jiang D, Lan X, An R, Gao Z. Minimizing adverse effects of Cerenkov radiation induced photodynamic therapy with transformable photosensitizer-loaded nanovesicles. J Nanobiotechnology 2022; 20:203. [PMID: 35477389 PMCID: PMC9044600 DOI: 10.1186/s12951-022-01401-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/28/2022] [Indexed: 01/12/2023] Open
Abstract
Background Photodynamic therapy (PDT) is a promising antitumor strategy with fewer adverse effects and higher selectivity than conventional therapies. Recently, a series of reports have suggested that PDT induced by Cerenkov radiation (CR) (CR-PDT) has deeper tissue penetration than traditional PDT; however, the strategy of coupling radionuclides with photosensitizers may cause severe side effects. Methods We designed tumor-targeting nanoparticles (131I-EM@ALA) by loading 5-aminolevulinic acid (ALA) into an 131I-labeled exosome mimetic (EM) to achieve combined antitumor therapy. In addition to playing a radiotherapeutic role, 131I served as an internal light source for the Cerenkov radiation (CR). Results The drug-loaded nanoparticles effectively targeted tumors as confirmed by confocal imaging, flow cytometry, and small animal fluorescence imaging. In vitro and in vivo experiments demonstrated that 131I-EM@ALA produced a promising antitumor effect through the synergy of radiotherapy and CR-PDT. The nanoparticles killed tumor cells by inducing DNA damage and activating the lysosome-mitochondrial pathways. No obvious abnormalities in the hematology analyses, blood biochemistry, or histological examinations were observed during the treatment. Conclusions We successfully engineered a nanocarrier coloaded with the radionuclide 131I and a photosensitizer precursor for combined radiotherapy and PDT for the treatment of breast cancer. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01401-0.
Collapse
Affiliation(s)
- Ruijie Qian
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Kun Wang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yawen Guo
- Department of Oncology, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyan Li
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Ziyang Zhu
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Xiaojuan Huang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Department of Nuclear Medicine, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310000, China
| | - Chengpeng Gong
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yu Gao
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Rong Guo
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Biao Yang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Chenyang Wang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Dawei Jiang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Xiaoli Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Rui An
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China. .,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China.
| | - Zairong Gao
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277 Jiefang Ave, Wuhan, 430022, China. .,Hubei Key Laboratory of Molecular Imaging, Wuhan, 430022, China.
| |
Collapse
|
5
|
Nile DL, Rae C, Walker DJ, Waddington JC, Vincent I, Burgess K, Gaze MN, Mairs RJ, Chalmers AJ. Inhibition of glycolysis and mitochondrial respiration promotes radiosensitisation of neuroblastoma and glioma cells. Cancer Metab 2021; 9:24. [PMID: 34011385 PMCID: PMC8136224 DOI: 10.1186/s40170-021-00258-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Neuroblastoma accounts for 7% of paediatric malignancies but is responsible for 15% of all childhood cancer deaths. Despite rigorous treatment involving chemotherapy, surgery, radiotherapy and immunotherapy, the 5-year overall survival rate of high-risk disease remains < 40%, highlighting the need for improved therapy. Since neuroblastoma cells exhibit aberrant metabolism, we determined whether their sensitivity to radiotherapy could be enhanced by drugs affecting cancer cell metabolism. METHODS Using a panel of neuroblastoma and glioma cells, we determined the radiosensitising effects of inhibitors of glycolysis (2-DG) and mitochondrial function (metformin). Mechanisms underlying radiosensitisation were determined by metabolomic and bioenergetic profiling, flow cytometry and live cell imaging and by evaluating different treatment schedules. RESULTS The radiosensitising effects of 2-DG were greatly enhanced by combination with the antidiabetic biguanide, metformin. Metabolomic analysis and cellular bioenergetic profiling revealed this combination to elicit severe disruption of key glycolytic and mitochondrial metabolites, causing significant reductions in ATP generation and enhancing radiosensitivity. Combination treatment induced G2/M arrest that persisted for at least 24 h post-irradiation, promoting apoptotic cell death in a large proportion of cells. CONCLUSION Our findings demonstrate that the radiosensitising effect of 2-DG was significantly enhanced by its combination with metformin. This clearly demonstrates that dual metabolic targeting has potential to improve clinical outcomes in children with high-risk neuroblastoma by overcoming radioresistance.
Collapse
Affiliation(s)
- Donna L Nile
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK.
- Present Address: Integrated Covid Hub North East (ICHNE) Innovation Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, NE4 5BX, UK.
| | - Colin Rae
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - David J Walker
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: School of Medicine, University of Dundee, Dundee, DD1 4HN, UK
| | | | - Isabel Vincent
- Glasgow Polyomics Facility, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Karl Burgess
- Glasgow Polyomics Facility, University of Glasgow, Glasgow, G61 1QH, UK
- Present Address: School of Biological Sciences, University of Edinburgh, Edinburgh, EH8 9XD, UK
| | - Mark N Gaze
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, NW1 2BU, UK
| | - Robert J Mairs
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| | - Anthony J Chalmers
- Institute of Cancer Sciences, University of Glasgow, Glasgow, G61 1QH, UK
| |
Collapse
|
6
|
Aldridge MD, Peet C, Wan S, Shankar A, Gains JE, Bomanji JB, Gaze MN. Paediatric Molecular Radiotherapy: Challenges and Opportunities. Clin Oncol (R Coll Radiol) 2021; 33:80-91. [PMID: 33246658 DOI: 10.1016/j.clon.2020.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/17/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022]
Abstract
The common contemporary indications for paediatric molecular radiotherapy (pMRT) are differentiated thyroid cancer and neuroblastoma. It may also have value in neuroendocrine cancers, and it is being investigated in clinical trials for other diseases. pMRT is the prototypical biomarker-driven, precision therapy, with a unique mode of delivery and mechanism of action. It is safe and well tolerated, compared with other treatments. However, its full potential has not yet been achieved, and its wider use faces a number of challenges and obstacles. Paradoxically, the success of radioactive iodine as a curative treatment for metastatic thyroid cancer has led to a 'one size fits all' approach and limited academic enquiry into optimisation of the conventional treatment regimen, until very recently. Second, the specialised requirements for the delivery of pMRT are available in only a very limited number of centres. This limited capacity and geographical coverage results in reduced accessibility. With few enthusiastic advocates for this treatment modality, investment in research to improve treatments and broaden indications from both industry and national and charitable research funders has historically been suboptimal. Nonetheless, there is now an increasing interest in the opportunities offered by pMRT. Increased research funding has been allocated, and technical developments that will permit innovative approaches in pMRT are available for exploration. A new portfolio of clinical trials is being assembled. These studies should help to move at least some paediatric treatments from simply palliative use into potentially curative protocols. Therapeutic strategies require modification and optimisation to achieve this. The delivery should be personalised and tailored appropriately, with a comprehensive evaluation of tumour and organ-at-risk dosimetry, in alignment with the external beam model of radiotherapy. This article gives an overview of the current status of pMRT, indicating the barriers to progress and identifying ways in which these may be overcome.
Collapse
Affiliation(s)
- M D Aldridge
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, UK; Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, UK
| | - C Peet
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, UK
| | - S Wan
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, UK
| | - A Shankar
- Department of Paediatric and Adolescent Oncology, University College London Hospitals NHS Foundation Trust, London, UK
| | - J E Gains
- Department of Oncology, University College London Hospitals NHS Foundation Trust, London, UK
| | - J B Bomanji
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, UK
| | - M N Gaze
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, London, UK.
| |
Collapse
|
7
|
Gains JE, Moroz V, Aldridge MD, Wan S, Wheatley K, Laidler J, Peet C, Bomanji JB, Gaze MN. A phase IIa trial of molecular radiotherapy with 177-lutetium DOTATATE in children with primary refractory or relapsed high-risk neuroblastoma. Eur J Nucl Med Mol Imaging 2020; 47:2348-2357. [PMID: 32157433 DOI: 10.1007/s00259-020-04741-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/20/2020] [Indexed: 12/15/2022]
Abstract
PURPOSE The objective of this phase IIa, open-label, single-centre, single-arm, two-stage clinical trial was to evaluate the safety and activity of 177-lutetium DOTATATE (LuDO) molecular radiotherapy in neuroblastoma. METHODS Children with relapsed or refractory metastatic high-risk neuroblastoma were treated with up to four courses of LuDO. The administered activity was 75 to 100 MBq kg-1 per course, spaced at 8- to 12-week intervals. Outcomes were assessed by the International Neuroblastoma Response Criteria (primary outcome), progression-free survival (PFS), and overall survival (OS). RESULTS The trial recruited 21 patients; eight received the planned four courses. There was dose-limiting haematologic toxicity in one case, but no other significant haematologic or renal toxicities. None of 14 evaluable patients had an objective response at 1 month after completion of treatment (Wilson 90% CI 0.0, 0.16; and 95% CI is 0.0, 0.22). The trial did not therefore proceed to the second stage. The median PFS was 2.96 months (95% CI 1.71, 7.66), and the median OS was 13.0 months (95% CI 2.99, 21.52). CONCLUSION In the absence of any objective responses, the use of LuDO as a single agent at the dose schedule used in this study is not recommended for the treatment of neuroblastoma. There are several reasons why this treatment schedule may not have resulted in objective responses, and as other studies do show benefit, the treatment should not be regarded as being of no value. Further trials designed to overcome this schedule's limitations are required. TRIAL REGISTRATION ISRCTN98918118; URL: https://www.isrctn.com/search?q=98918118.
Collapse
Affiliation(s)
- Jennifer E Gains
- Department of Oncology, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London, NW1 2PG, UK
| | - Veronica Moroz
- Cancer Research UK Clinical Trials Unit, Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Matthew D Aldridge
- Department of Oncology, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London, NW1 2PG, UK
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, 235 Euston Road, London, NW1 2BU, UK
| | - Simon Wan
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, 235 Euston Road, London, NW1 2BU, UK
| | - Keith Wheatley
- Cancer Research UK Clinical Trials Unit, Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Jennifer Laidler
- Cancer Research UK Clinical Trials Unit, Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Connie Peet
- Department of Oncology, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London, NW1 2PG, UK
| | - Jamshed B Bomanji
- Department of Nuclear Medicine, University College London Hospitals NHS Foundation Trust, 235 Euston Road, London, NW1 2BU, UK
| | - Mark N Gaze
- Department of Oncology, University College London Hospitals NHS Foundation Trust, 250 Euston Road, London, NW1 2PG, UK.
| |
Collapse
|
8
|
Cullinane C, Waldeck K, Kirby L, Rogers BE, Eu P, Tothill RW, Hicks RJ. Enhancing the anti-tumour activity of 177Lu-DOTA-octreotate radionuclide therapy in somatostatin receptor-2 expressing tumour models by targeting PARP. Sci Rep 2020; 10:10196. [PMID: 32576907 PMCID: PMC7311440 DOI: 10.1038/s41598-020-67199-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 06/02/2020] [Indexed: 01/25/2023] Open
Abstract
Peptide receptor radionuclide therapy (PRRT) is an important treatment option for patients with somatostatin receptor-2 (SSTR2)-expressing neuroendocrine tumour (NET) though tumour regression occurs in only a minority of patients. Therefore, novel PRRT regimens with improved therapeutic activity are needed. Radiation induced DNA damage repair is an attractive therapeutic target to increase PRRT efficacy and consequently, we have characterised a panel of preclinical models for their SSTR2 expression, in vivo growth properties and response to 177Lu-DOTA-octreotate (LuTate) PRRT to identify models with features suitable for evaluating novel therapeutic combinations. In vitro studies using the SSTR2 expressing AR42J model demonstrate that the combination of LuTate and the small molecule Poly(ADP-ribose) polymerase-1 (PARP) inhibitor, talazoparib led to increased DNA double strand breaks, as assessed by γ-H2AX foci formation, as compared to LuTate alone. Furthermore, using the AR42J tumour model in vivo we demonstrate that the combination of LuTate and talazoparib significantly improved the anti-tumour efficacy of LuTate alone. These findings support the clinical evaluation of the combination of LuTate and PARP inhibition in SSTR2-expressing NET.
Collapse
Affiliation(s)
- Carleen Cullinane
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia.
| | - Kelly Waldeck
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Laura Kirby
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Buck E Rogers
- Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO, 63110, USA
| | - Peter Eu
- Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- School of Medicine, Deakin University, Geelong, Victoria, Australia
| | - Richard W Tothill
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Clinical Pathology and Centre for Cancer Research, University of Melbourne, Parkville, Victoria, Australia
| | - Rodney J Hicks
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| |
Collapse
|
9
|
Avitabile M, Lasorsa VA, Cantalupo S, Cardinale A, Cimmino F, Montella A, Capasso D, Haupt R, Amoroso L, Garaventa A, Quattrone A, Corrias MV, Iolascon A, Capasso M. Association of PARP1 polymorphisms with response to chemotherapy in patients with high-risk neuroblastoma. J Cell Mol Med 2020; 24:4072-4081. [PMID: 32103589 PMCID: PMC7171401 DOI: 10.1111/jcmm.15058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 12/25/2022] Open
Abstract
The genetic aetiology and the molecular mechanisms that characterize high‐risk neuroblastoma are still little understood. The majority of high‐risk neuroblastoma patients do not take advantage of current induction therapy. So far, one of the main reasons liable for cancer therapeutic failure is the acquisition of resistance to cytotoxic anticancer drugs, because of the DNA repair system of tumour cells. PARP1 is one of the main DNA damage sensors involved in the DNA repair system and genomic stability. We observed that high PARP1 mRNA level is associated with unfavourable prognosis in 3 public gene expression NB patients’ datasets and in 20 neuroblastomas analysed by qRT‐PCR. Among 4983 SNPs in PARP1, we selected two potential functional SNPs. We investigated the association of rs907187, in PARP1 promoter, and rs2048426 in non‐coding region with response chemotherapy in 121 Italian patients with high‐risk NB. Results showed that minor G allele of rs907187 associated with induction response of patients (P = .02) and with decrease PARP1 mRNA levels in NB cell line (P = .003). Furthermore, rs907187 was predicted to alter the binding site of E2F1 transcription factor. Specifically, allele G had low binding affinity with E2F1 whose expression positively correlates with PARP1 expression and associated with poor prognosis of patients with NB. By contrast, we did not find genetic association for the SNP rs2048426. These data reveal rs907187 as a novel potential risk variant associated with the failure of induction therapy for high‐risk NB.
Collapse
Affiliation(s)
- Marianna Avitabile
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Vito Alessandro Lasorsa
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy
| | | | | | | | | | - Dalila Capasso
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Riccardo Haupt
- UOS Epidemiology, Biostatistics and Committees, Genova, Italy
| | - Loredana Amoroso
- Department of Pediatric Oncology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Alberto Garaventa
- Department of Pediatric Oncology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Alessandro Quattrone
- Laboratory of Translational Genomics, Centre for Integrative Biology, University of Trento, Trento, Italy
| | - Maria Valeria Corrias
- Laboratory of Experimental Therapy in Oncology, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Achille Iolascon
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Mario Capasso
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy.,IRCCS SDN, Naples, Italy
| |
Collapse
|
10
|
Pandit-Taskar N, Modak S. Norepinephrine Transporter as a Target for Imaging and Therapy. J Nucl Med 2017; 58:39S-53S. [PMID: 28864611 DOI: 10.2967/jnumed.116.186833] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 07/19/2017] [Indexed: 01/01/2023] Open
Abstract
The norepinephrine transporter (NET) is essential for norepinephrine uptake at the synaptic terminals and adrenal chromaffin cells. In neuroendocrine tumors, NET can be targeted for imaging as well as therapy. One of the most widely used theranostic agents targeting NET is metaiodobenzylguanidine (MIBG), a guanethidine analog of norepinephrine. 123I/131I-MIBG theranostics have been applied in the clinical evaluation and management of neuroendocrine tumors, especially in neuroblastoma, paraganglioma, and pheochromocytoma. 123I-MIBG imaging is a mainstay in the evaluation of neuroblastoma, and 131I-MIBG has been used for the treatment of relapsed high-risk neuroblastoma for several years, however, the outcome remains suboptimal. 131I-MIBG has essentially been only palliative in paraganglioma/pheochromocytoma patients. Various techniques of improving therapeutic outcomes, such as dosimetric estimations, high-dose therapies, multiple fractionated administration and combination therapy with radiation sensitizers, chemotherapy, and other radionuclide therapies, are being evaluated. PET tracers targeting NET appear promising and may be more convenient options for the imaging and assessment after treatment. Here, we present an overview of NET as a target for theranostics; review its current role in some neuroendocrine tumors, such as neuroblastoma, paraganglioma/pheochromocytoma, and carcinoids; and discuss approaches to improving targeting and theranostic outcomes.
Collapse
Affiliation(s)
| | - Shakeel Modak
- Memorial Sloan Kettering Cancer Center, New York, New York
| |
Collapse
|
11
|
Qiao W, Zhao L, Wu S, Liu C, Guo L, Xing Y, Zhao J. SPECT imaging and radionuclide therapy of glioma using 131I labeled Buthus martensii Karsch chlorotoxin. J Neurooncol 2017; 133:287-295. [PMID: 28488065 DOI: 10.1007/s11060-017-2456-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/30/2017] [Indexed: 01/18/2023]
Abstract
Gliomas, the most prevalent type of brain tumor in adults, are associated with high rates of morbidity and mortality. Recent studies on 131I labeled scorpion toxins suggest they can be developed as tumor-specific agents for glioma diagnosis and treatment. This study investigated the potential of 131I labeled Buthus martensii Karsch chlorotoxin (131I-BmK CT) as a new approach for targeted imaging and therapy of glioma. The results showed that 131I can be successfully linked to BmK CT with satisfactory radiochemical purity and stability and that 131I-BmK CT markedly inhibited glioma cell growth in a dose and time dependent manner, with significant accumulation in glioma cells in vitro. Persistent intratumoral radioiodine retention and specific accumulation of 131I-BmK CT were observed in C6 glioma tumor, which was clearly visualized by SPECT imaging. Both intratumoral and intravenous injections of 131I-BmK CT could result in significant tumor inhibition efficacy and prolonging the lifetime of tumor-bearing mice. Based on these promising results, it is concluded that 131I-BmK CT has the potential to be explored as a novel tool for SPECT imaging and radionuclide therapy of glioma.
Collapse
Affiliation(s)
- Wenli Qiao
- Department of Nuclear Medicine, Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, China
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Lingzhou Zhao
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Shan Wu
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Changcun Liu
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Lilei Guo
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Yan Xing
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Jinhua Zhao
- Department of Nuclear Medicine, Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, China.
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
| |
Collapse
|
12
|
Colicchia V, Petroni M, Guarguaglini G, Sardina F, Sahún-Roncero M, Carbonari M, Ricci B, Heil C, Capalbo C, Belardinilli F, Coppa A, Peruzzi G, Screpanti I, Lavia P, Gulino A, Giannini G. PARP inhibitors enhance replication stress and cause mitotic catastrophe in MYCN-dependent neuroblastoma. Oncogene 2017; 36:4682-4691. [PMID: 28394338 DOI: 10.1038/onc.2017.40] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 12/05/2016] [Accepted: 01/11/2017] [Indexed: 12/18/2022]
Abstract
High-risk and MYCN-amplified neuroblastomas are among the most aggressive pediatric tumors. Despite intense multimodality therapies, about 50% of these patients succumb to their disease, making the search for effective therapies an absolute priority. Due to the important functions of poly (ADP-ribose) polymerases, PARP inhibitors have entered the clinical settings for cancer treatment and are being exploited in a variety of preclinical studies and clinical trials. PARP inhibitors based combination schemes have also been tested in neuroblastoma preclinical models with encouraging results. However, the expression of PARP enzymes in human neuroblastoma and the biological consequences of their inhibition remained largely unexplored. Here, we show that high PARP1 and PARP2 expression is significantly associated with high-risk neuroblastoma cases and poor survival, highlighting its previously unrecognized prognostic value for human neuroblastoma. In vitro, PARP1 and 2 are abundant in MYCN amplified and MYCN-overexpressing cells. In this context, PARP inhibitors with high 'PARP trapping' potency, such as olaparib or talazoparib, yield DNA damage and cell death preceded by intense signs of replication stress. Notwithstanding the activation of a CHK1-CDC25A replication stress response, PARP-inhibited MYCN amplified and overexpressing cells fail to sustain a prolonged checkpoint and progress through mitosis in the presence of damaged DNA, eventually undergoing mitotic catastrophe. CHK1-targeted inhibition of the replication stress checkpoint exacerbated this phenotype. These data highlight a novel route for cell death induction by PARP inhibitors and support their introduction, together with CHK1 inhibitors, in therapeutic approaches for neuroblastomas with high MYC(N) activity.
Collapse
Affiliation(s)
- V Colicchia
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - M Petroni
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - G Guarguaglini
- Institute of Molecular Biology and Pathology, CNR National Research Council, c/o University La Sapienza, Rome, Italy
| | - F Sardina
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - M Sahún-Roncero
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - M Carbonari
- Department of Clinical Medicine, University La Sapienza, Rome, Italy
| | - B Ricci
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - C Heil
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - C Capalbo
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - F Belardinilli
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - A Coppa
- Department of Experimental Medicine, University La Sapienza, Rome, Italy
| | - G Peruzzi
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Rome, Italy
| | - I Screpanti
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - P Lavia
- Institute of Molecular Biology and Pathology, CNR National Research Council, c/o University La Sapienza, Rome, Italy
| | - A Gulino
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - G Giannini
- Department of Molecular Medicine, University La Sapienza, Rome, Italy.,Istituto Pasteur-Fondazione Cenci Bolognetti, Department of Molecular Medicine, University La Sapienza, Rome, Italy
| |
Collapse
|
13
|
Flux GD, O'Sullivan J, Gaze MN, Prise KM. Opportunities for research in molecular radiotherapy. Br J Radiol 2017; 90:20160921. [PMID: 28055251 PMCID: PMC5601516 DOI: 10.1259/bjr.20160921] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 01/03/2017] [Indexed: 11/25/2022] Open
Abstract
Cancer has been treated with radiopharmaceuticals for 80 years. A recent National Cancer Research Institute report from the Clinical and Translational Radiotherapy Research Working Group reviews the current status of molecular radiotherapy and has highlighted the barriers to and opportunities for increased research activities. The report recommends a number of actions to promote this field, which in the dawning age of personalized medicine and theragnostics is of increasing importance, particularly with the clinical introduction of a range of new commercial radiotherapeutics at costs in line with those seen for conventional chemotherapeutics. These recommendations recognize the importance of a multidisciplinary approach to the development of molecular radiotherapy and the particular need for investment in radiopharmacies and personalized dosimetry. There are many areas to be investigated including adaptive treatment planning, the use of radiosensitizers and translational radiation biology. Progress in these areas will result in significant patient benefit and more cost-effective use of increasingly expensive therapeutic radiopharmaceuticals. A concerted effort from the community, from funding bodies and from health service providers is now needed to address the scientific and logistical changes necessary to realize the potential offered by this currently underused treatment modality.
Collapse
Affiliation(s)
- Glenn D Flux
- Joint Department of Physics, Royal Marsden NHS Hospital and Institute of Cancer Research, Sutton, UK
| | - Joe O'Sullivan
- Centre for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| | - Mark N Gaze
- Department of Oncology, NIHR University College London Hospitals Biomedical Research Centre, London, UK
| | - Kevin M Prise
- Centre for Cancer Research and Cell Biology, Queen's University, Belfast, UK
| |
Collapse
|
14
|
Neshasteh-Riz A, Eyvazzadeh N, Koosha F, Cheraghi S. Comparison of DSB effects of the beta particles of iodine-131 and 6 MV X-ray at a dose of 2 Gy in the presence of 2-Methoxyestradiol, IUdR, and TPT in glioblastoma spheroids. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2016.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
15
|
Nile DL, Rae C, Hyndman IJ, Gaze MN, Mairs RJ. An evaluation in vitro of PARP-1 inhibitors, rucaparib and olaparib, as radiosensitisers for the treatment of neuroblastoma. BMC Cancer 2016; 16:621. [PMID: 27515310 PMCID: PMC4982014 DOI: 10.1186/s12885-016-2656-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/30/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The radiopharmaceutical (131)I-meta-iodobenzylguanidine ((131)I-MIBG) is an effective treatment for neuroblastoma. However, maximal therapeutic benefit from (131)I-MIBG is likely to be obtained by its combination with chemotherapy. We previously reported enhanced antitumour efficacy of (131)I-MIBG by inhibition of the poly(ADP-ribose) polymerase-1 (PARP-1) DNA repair pathway using the phenanthridinone derivative PJ34. Recently developed alternative PARP-1 inhibitors have greater target specificity and are expected to be associated with reduced toxicity to normal tissue. Therefore, our purpose was to determine whether the more specific PARP-1 inhibitors rucaparib and olaparib enhanced the efficacy of X-radiation or (131)I-MIBG. METHODS Radiosensitisation of SK-N-BE(2c) neuroblastoma cells or noradrenaline transporter gene-transfected glioma cells (UVW/NAT) was investigated using clonogenic assay. Propidium iodide staining and flow cytometry was used to analyse cell cycle progression. DNA damage was quantified by the phosphorylation of H2AX (γH2AX). RESULTS By combining PARP-1 inhibition with radiation treatment, it was possible to reduce the X-radiation dose or (131)I-MIBG activity concentration required to achieve 50 % cell kill by approximately 50 %. Rucaparib and olaparib were equally effective inhibitors of PARP-1 activity. X-radiation-induced DNA damage was significantly increased 2 h after irradiation by combination with PARP-1 inhibitors (10-fold greater DNA damage compared to untreated controls; p < 0.01). Moreover, combination treatment (i) prevented the restitution of DNA, exemplified by the persistence of 3-fold greater DNA damage after 24 h, compared to untreated controls (p < 0.01) and (ii) induced greater G2/M arrest (p < 0.05) than either single agent alone. CONCLUSION Rucaparib and olaparib sensitise cancer cells to X-radiation or (131)I-MIBG treatment. It is likely that the mechanism of radiosensitisation entails the accumulation of unrepaired radiation-induced DNA damage. Our findings suggest that the administration of PARP-1 inhibitors and (131)I-MIBG to high risk neuroblastoma patients may be beneficial.
Collapse
Affiliation(s)
- Donna L Nile
- Radiation Oncology, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
| | - Colin Rae
- Radiation Oncology, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Iain J Hyndman
- Radiation Oncology, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Mark N Gaze
- University College London Hospitals, London, UK
| | - Robert J Mairs
- Radiation Oncology, Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| |
Collapse
|
16
|
Tesson M, Rae C, Nixon C, Babich JW, Mairs RJ. Preliminary evaluation of prostate-targeted radiotherapy using (131) I-MIP-1095 in combination with radiosensitising chemotherapeutic drugs. ACTA ACUST UNITED AC 2016; 68:912-21. [PMID: 27139157 PMCID: PMC5298040 DOI: 10.1111/jphp.12558] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 03/13/2016] [Indexed: 12/22/2022]
Abstract
Objectives Despite recent advances in the treatment of metastatic prostate cancer, survival rates are low and treatment options are limited to chemotherapy and hormonal therapy. 131I‐MIP‐1095 is a recently developed prostate‐specific membrane antigen (PSMA)‐targeting, small molecular weight radiopharmaceutical which has anti‐tumour activity as a single agent. Our purpose was to determine in vitro the potential benefit to be gained by combining 131I‐MIP‐1095 with cytotoxic drug treatments. Methods Various cytotoxic agents were evaluated in combination with 131I‐MIP‐1095 for their capacity to delay the growth of LNCaP cells cultured as multicellular tumour spheroids. Two end‐points were used to assess treatment efficacy: (i) the time required for doubling of spheroid volume and (ii) the area under the volume–time growth curves. Key findings The PARP‐1 inhibitor olaparib, the topoisomerase I inhibitor topotecan, the proteasome inhibitor bortezomib, the inhibitor of the P53–MDM2 interaction nutlin‐3 and the copper‐chelated form of the oxidising agent disulfiram (DSF:Cu) all significantly enhanced the inhibition of the growth of spheroids induced by 131I‐MIP‐1095. However, the Chk1 inhibitor AZD7762 failed to potentiate the effect of 131I‐MIP‐1095. Conclusions These results indicate that targeted radiotherapy of prostate cancer may be optimised by combining its administration with chemotherapy.
Collapse
Affiliation(s)
- Mathias Tesson
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Colin Rae
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Colin Nixon
- Beatson Institute for Cancer Research, Glasgow, UK
| | - John W Babich
- Division of Radiopharmacy, Department of Radiology, Cornell University, New York, NY, USA
| | - Robert J Mairs
- Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| |
Collapse
|
17
|
|
18
|
Eyvazzadeh N, Neshasteh-Riz A, Mahdavi SR. DNA damage of glioblastoma multiform cells induced by Beta radiation of iodine-131 in the presence or absence of topotecan: a picogreen and colonogenic assay. CELL JOURNAL 2015; 17:99-110. [PMID: 25870839 PMCID: PMC4393677 DOI: 10.22074/cellj.2015.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 02/08/2014] [Indexed: 11/20/2022]
Abstract
Objective Glioblastoma multiforme (GBM), one of the most common and aggressive
malignant brain tumors, is highly resistant to radiotherapy. Numerous approaches have
been pursued to find new radiosensitizers. We used a picogreen and colonogenic assay
to appraise the DNA damage and cell death in a spheroid culture of GBM cells caused by
iodine-131 (I-131) beta radiation in the presence of topotecan (TPT). Materials and Methods U87MG cells were cultured as spheroids with approximate
diameters of 300 μm. Cells were treated with beta radiation of I-131 (at a dose of 2 Gy)
and/ or TPT (1 μg/ml for 2 hours). The numbers of cells that survived were compared with
untreated cells using a colonogenic assay. In addition, we evaluated possible DNA damages by the picogreen method. The relation between DNA damage and cell death was
assessed in the experimental study of groups.
Results The findings showed that survival fraction (SF) in the I-131+TPT group
(39%) was considerably less than the I-131 group (58.92%; p<0.05). The number of
single strand breaks (SSB) and double strand breaks (DSB), in the DNA of U87MG
cells treated with beta radiation of I-131 and TPT (I-131+TPT) significantly increased
compared to cells treated with only I-131 or TPT (p<0.05). The amount of SSB repair was more than DSB repair (p<0.05). The relationship between cell death and
DNA damage was close (r≥0.6) and significant (p<0.05) in the irradiated and treated
groups. Also the maximum rate of DNA repair occurred 24 hours after the treatments.
A significant difference was not observed on other days of the restoration.
Conclusion The findings in the present study indicated that TPT can sensitize
U87MG cells to radiation and increase DNA damages. Potentially, TPT can cause
an increase in damage from DSB and SSB by its inhibitory effects on topoisomerase
enzyme and the cell cycle. The increased complex damages following the use of a
genotoxic agent and beta I-131 radiation, causes a significant increase the cell death
because of the difficult repair process. By assessing the relationship between DNA
damage and cell death, the picogreen method can be useful in predicting colonogenic
assay. Consequently, it is suggested that co-treatment with I-131 beta radiation and
TPT can improve GBM treatment.
Collapse
Affiliation(s)
- Nazila Eyvazzadeh
- Radiation Research Center, Faculty of Paramedicine, AJA University of Medical Sciences, Tehran, Iran
| | - Ali Neshasteh-Riz
- Department of Radiology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Rabee Mahdavi
- Department of Medical Physics, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
19
|
Streby KA, Shah N, Ranalli MA, Kunkler A, Cripe TP. Nothing but NET: a review of norepinephrine transporter expression and efficacy of 131I-mIBG therapy. Pediatr Blood Cancer 2015; 62:5-11. [PMID: 25175627 PMCID: PMC4237663 DOI: 10.1002/pbc.25200] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 07/07/2014] [Indexed: 12/21/2022]
Abstract
Neuroblastoma is unique amongst common pediatric cancers for its expression of the norepinephrine transporter (NET), enabling tumor-selective imaging and therapy with radioactive analogues of norepinephrine. The majority of neuroblastoma tumors are avid for (123)I-metaiodobenzaguanidine (mIBG) on imaging, yet the therapeutic response to (131) I-mIBG is only 30% in clinical trials, and off-target effects cause short- and long-term morbidity. We review the contemporary understanding of the tumor-selective uptake, retention, and efflux of meta-iodobenzylguanidine (mIBG) and strategies currently in development for improving its efficacy. Combination treatment strategies aimed at enhancing NET are likely necessary to reach the full potential of (131)I-mIBG therapy.
Collapse
Affiliation(s)
- Keri A Streby
- Division of Hematology/Oncology/Blood and Marrow Transplant, The Ohio State UniversityColumbus, Ohio
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, The Ohio State UniversityColumbus, Ohio
| | - Nilay Shah
- Division of Hematology/Oncology/Blood and Marrow Transplant, The Ohio State UniversityColumbus, Ohio
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, The Ohio State UniversityColumbus, Ohio
| | - Mark A Ranalli
- Division of Hematology/Oncology/Blood and Marrow Transplant, The Ohio State UniversityColumbus, Ohio
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, The Ohio State UniversityColumbus, Ohio
| | - Anne Kunkler
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, The Ohio State UniversityColumbus, Ohio
| | - Timothy P Cripe
- Division of Hematology/Oncology/Blood and Marrow Transplant, The Ohio State UniversityColumbus, Ohio
- Center for Childhood Cancer and Blood Diseases, Nationwide Children's Hospital, The Ohio State UniversityColumbus, Ohio
| |
Collapse
|
20
|
Rae C, Tesson M, Babich JW, Boyd M, Mairs RJ. Radiosensitization of noradrenaline transporter-expressing tumour cells by proteasome inhibitors and the role of reactive oxygen species. EJNMMI Res 2013; 3:73. [PMID: 24219987 PMCID: PMC3828419 DOI: 10.1186/2191-219x-3-73] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 10/01/2013] [Indexed: 12/24/2022] Open
Abstract
Background The radiopharmaceutical 131I-metaiodobenzylguanidine (131I-MIBG) is used for the targeted radiotherapy of noradrenaline transporter (NAT)-expressing neuroblastoma. Enhancement of 131I-MIBG's efficacy is achieved by combination with the topoisomerase I inhibitor topotecan - currently being evaluated clinically. Proteasome activity affords resistance of tumour cells to radiation and topoisomerase inhibitors. Therefore, the proteasome inhibitor bortezomib was evaluated with respect to its cytotoxic potency as a single agent and in combination with 131I-MIBG and topotecan. Since elevated levels of reactive oxygen species (ROS) are induced by bortezomib, the role of ROS in tumour cell kill was determined following treatment with bortezomib or the alternative proteasome inhibitor, MG132. Methods Clonogenic assay and growth of tumour xenografts were used to investigate the effects of proteasome inhibitors alone or in combination with radiation treatment. Synergistic interactions in vitro were evaluated by combination index analysis. The dependency of proteasome inhibitor-induced clonogenic kill on ROS generation was assessed using antioxidants. Results Bortezomib, in the dose range 1 to 30 nM, decreased clonogenic survival of both SK-N-BE(2c) and UVW/NAT cells, and this was prevented by antioxidants. It also acted as a sensitizer in vitro when administered with X-radiation, with 131I-MIBG, or with 131I-MIBG and topotecan. Moreover, bortezomib enhanced the delay of the growth of human tumour xenografts in athymic mice when administered in combination with 131I-MIBG and topotecan. MG132 and bortezomib had similar radiosensitizing potency, but only bortezomib-induced cytotoxicity was ROS-dependent. Conclusions Proteasome inhibition shows promise for the treatment of neuroblastoma in combination with 131I-MIBG and topotecan. Since the cytotoxicity of MG132, unlike that of bortezomib, was not ROS-dependent, the latter proteasome inhibitor may have a favourable toxicity profile in normal tissues.
Collapse
Affiliation(s)
| | | | | | | | - Robert J Mairs
- Radiation Oncology, Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Glasgow G61 1BD, Scotland.
| |
Collapse
|