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Ali A, Mekhaeil B, Biziotis OD, Tsakiridis EE, Ahmadi E, Wu J, Wang S, Singh K, Menjolian G, Farrell T, Mesci A, Liu S, Berg T, Bramson JL, Steinberg GR, Tsakiridis T. The SGLT2 inhibitor canagliflozin suppresses growth and enhances prostate cancer response to radiotherapy. Commun Biol 2023; 6:919. [PMID: 37684337 PMCID: PMC10491589 DOI: 10.1038/s42003-023-05289-w] [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: 11/12/2022] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Radiotherapy is a non-invasive standard treatment for prostate cancer (PC). However, PC develops radio-resistance, highlighting a need for agents to improve radiotherapy response. Canagliflozin, an inhibitor of sodium-glucose co-transporter-2, is approved for use in diabetes and heart failure, but is also shown to inhibit PC growth. However, whether canagliflozin can improve radiotherapy response in PC remains unknown. Here, we show that well-tolerated doses of canagliflozin suppress proliferation and survival of androgen-sensitive and insensitive human PC cells and tumors and sensitize them to radiotherapy. Canagliflozin blocks mitochondrial respiration, promotes AMPK activity, inhibits the MAPK and mTOR-p70S6k/4EBP1 pathways, activates cell cycle checkpoints, and inhibits proliferation in part through HIF-1α suppression. Canagliflozin mediates transcriptional reprogramming of several metabolic and survival pathways known to be regulated by ETS and E2F family transcription factors. Genes downregulated by canagliflozin are associated with poor PC prognosis. This study lays the groundwork for clinical investigation of canagliflozin in PC prevention and treatment in combination with radiotherapy.
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Affiliation(s)
- Amr Ali
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Bassem Mekhaeil
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
| | - Olga-Demetra Biziotis
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Evangelia E Tsakiridis
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Departments of Medicine, McMaster University, Hamilton, ON, Canada
| | - Elham Ahmadi
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
| | - Jianhan Wu
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Departments of Medicine, McMaster University, Hamilton, ON, Canada
| | - Simon Wang
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Kanwaldeep Singh
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Gabe Menjolian
- Department of Radiotherapy, Juravinski Cancer Center, Hamilton, ON, Canada
| | - Thomas Farrell
- Department of Physics, Juravinski Cancer Center, Hamilton, Ontario, Canada
| | - Aruz Mesci
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Department of Radiation Oncology, Juravinski Cancer Center, Hamilton, ON, Canada
| | - Stanley Liu
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | - Tobias Berg
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Jonathan L Bramson
- Departments of Oncology, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Gregory R Steinberg
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada
- Departments of Medicine, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Theodoros Tsakiridis
- Departments of Oncology, McMaster University, Hamilton, ON, Canada.
- Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, ON, Canada.
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada.
- Department of Radiation Oncology, Juravinski Cancer Center, Hamilton, ON, Canada.
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada.
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2
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Wegener E, Samuels J, Sidhom M, Trada Y, Sridharan S, Dickson S, McLeod N, Martin JM. Virtual HDR Boost for Prostate Cancer: Rebooting a Classic Treatment Using Modern Tech. Cancers (Basel) 2023; 15:cancers15072018. [PMID: 37046680 PMCID: PMC10093761 DOI: 10.3390/cancers15072018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023] Open
Abstract
Prostate cancer (PC) is the most common malignancy in men. Internal radiotherapy (brachytherapy) has been used to treat PC successfully for over a century. In particular, there is level-one evidence of the benefits of using brachytherapy to escalate the dose of radiotherapy compared with standard external beam radiotherapy approaches. However, the use of PC brachytherapy is declining, despite strong evidence for its improved cancer outcomes. A method using external beam radiotherapy known as virtual high-dose-rate brachytherapy boost (vHDRB) aims to noninvasively mimic a brachytherapy boost radiation dose plan. In this review, we consider the evidence supporting brachytherapy boosts for PC and the continuing evolution of vHDRB approaches, culminating in the current generation of clinical trials, which will help define the role of this emerging modality.
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Affiliation(s)
- Eric Wegener
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW 2308, Australia
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
- GenesisCare, Maitland, NSW 2323, Australia
- GenesisCare, Gateshead, NSW 2290, Australia
- Correspondence:
| | - Justin Samuels
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
| | - Mark Sidhom
- Department of Radiation Oncology, Liverpool Hospital, Liverpool, NSW 2170, Australia
| | - Yuvnik Trada
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
| | - Swetha Sridharan
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
- GenesisCare, Gateshead, NSW 2290, Australia
| | - Samuel Dickson
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
| | - Nicholas McLeod
- Department of Urology, John Hunter Hospital, Newcastle, NSW 2305, Australia
| | - Jarad M. Martin
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW 2308, Australia
- Department of Radiation Oncology, Calvary Mater Newcastle Hospital, Waratah, NSW 2298, Australia
- GenesisCare, Maitland, NSW 2323, Australia
- GenesisCare, Gateshead, NSW 2290, Australia
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Greco C, Pares O, Pimentel N, Louro V, Nunes B, Kociolek J, Marques J, Fuks Z. Health-related quality of life of salvage prostate reirradiation using stereotactic ablative radiotherapy with urethral-sparing. Front Oncol 2022; 12:984917. [PMID: 36276100 PMCID: PMC9582606 DOI: 10.3389/fonc.2022.984917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/12/2022] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To explore whether prostate motion mitigation using the rectal distension-mediated technique is safe and effective in stereotactic ablative radiation therapy (SABR) salvage treatment of intraprostatic cancer recurrences following initial radiotherapy for primary prostate cancer. MATERIALS AND METHODS Between July 2013 and December 2020, 30 patients received salvage SABR for 68Ga- PSMA-11 PET/CT-detected intra-prostatic relapses. Median time from primary RT to salvage reirradiation was 70.2 (IQR, 51.3-116.0) months. Median PSA at retreatment was 3.6 ng/mL (IQR, 1.9-6.2). Rectal distension-mediated SABR was achieved with a 150-cm3 air-inflated endorectal balloon and a Foley catheter loaded with 3 beacon transponders was used for urethra visualization and on-line tracking. MRI-based planning employed a 2-mm expansion around the planned target volume (PTV), reduced to 0-mm at the interface with critical organs at risk (OARs). Volumetric Modulated Arc Therapy (VMAT) permitted a 20% dose reduction of the urethra. VMAT simultaneous integrated boost (SIB) of the dominant intraprostatic lesion was deployed when indicated. Median SABR dose was 35 Gy (7 Gy per fraction over 5 consecutive days; range 35-40 Gy). Toxicity assessment used CTCAE v.4 criteria. RESULTS Median follow-up was 44 months (IQR, 18-60). The actuarial 3- and 4-year biochemical relapse free survival was 53.4% and 47.5%, respectively. Intraprostatic post-salvage relapse by PSMA PET/CT was 53.3%. Acute grade 2 and 3 genitourinary (GU) toxicities were 20% and 0%, respectively. There were no instances of acute grade ≥2 rectal (GI) toxicity. Late grade 2 and 3 GU toxicities occurred in 13.3% and 0% of patients, respectively. There were no instances of grade ≥2 late rectal toxicity. Patient-reported QOL measures showed an acute transient deterioration in the urinary domain 1 month after treatment but returned to baseline values at 3 months. The median IPSS scores rose over baseline (≥5 points in 53% of patients) between month 6 and 12 post-treatment as a result of urinary symptoms flare, eventually receding at 18 months. The bowel domain metrics had no appreciable changes over time. CONCLUSION Pursuit of local control in intraprostatic failures is feasible and can be achieved with an acceptably low toxicity profile associated with effective OAR sparing.
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Affiliation(s)
- Carlo Greco
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal,*Correspondence: Carlo Greco,
| | - Oriol Pares
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Nuno Pimentel
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Vasco Louro
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Beatriz Nunes
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Justyna Kociolek
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Joao Marques
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal
| | - Zvi Fuks
- The Champalimaud Centre for the Unknown, Department of Radiation Oncology, Lisbon, Portugal,Memorial Sloan Kettering Cancer Department of Radiation Oncology Center, New York, NY, United States
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Correa RJM, Loblaw A. Stereotactic Body Radiotherapy: Hitting Harder, Faster, and Smarter in High-Risk Prostate Cancer. Front Oncol 2022; 12:889132. [PMID: 35875062 PMCID: PMC9301671 DOI: 10.3389/fonc.2022.889132] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/31/2022] [Indexed: 11/30/2022] Open
Abstract
Stereotactic body radiotherapy (SBRT) is a technologically sophisticated form of radiotherapy that holds significant potential to effectively treat high-risk prostate cancer (HRPC). Prostate SBRT has been the subject of intense investigation in the context of low- and intermediate-risk disease, but less so for HRPC. However, emerging data are demonstrating its potential to safely and efficiently delivery curative doses of radiotherapy, both to the prostate and elective lymph nodes. SBRT theoretically hits harder through radiobiological dose escalation facilitated by ultra-hypofractionation (UHRT), faster with only five treatment fractions, and smarter by using targeted, focal dose escalation to maximally ablate the dominant intraprostatic lesion (while maximally protecting normal tissues). To achieve this, advanced imaging modalities like magnetic resonance imaging and prostate specific membrane antigen positron emmission tomography (PSMA-PET) are leveraged in combination with cutting-edge radiotherapy planning and delivery technology. In this focused narrative review, we discuss key evidence and upcoming clinical trials evaluating SBRT for HRPC with a focus on dose escalation, elective nodal irradiation, and focal boost.
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Affiliation(s)
- Rohann J. M. Correa
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
- Division of Radiation Oncology, Department of Oncology, Western University and London Health Sciences Centre, London, Canada
| | - Andrew Loblaw
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
- Department of Health Policy, Measurement and Evaluation, University of Toronto, Toronto, Canada
- *Correspondence: Andrew Loblaw,
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5
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Greco C, Pares O, Pimentel N, Louro V, Nunes B, Kociolek J, Stroom J, Vieira S, Mateus D, Cardoso MJ, Soares A, Marques J, Freitas E, Coelho G, Fuks Z. Urethra Sparing With Target Motion Mitigation in Dose-Escalated Extreme Hypofractionated Prostate Cancer Radiotherapy: 7-Year Results From a Phase II Study. Front Oncol 2022; 12:863655. [PMID: 35433469 PMCID: PMC9012148 DOI: 10.3389/fonc.2022.863655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 02/24/2022] [Indexed: 11/15/2022] Open
Abstract
Purpose To explore whether the rectal distension-mediated technique, harnessing human physiology to achieve intrafractional prostate motion mitigation, enables urethra sparing by inverse dose painting, thus promoting dose escalation with extreme hypofractionated stereotactic ablative radiotherapy (SABR) in prostate cancer. Materials and Methods Between June 2013 and December 2018, 444 patients received 5 × 9 Gy SABR over 5 consecutive days. Rectal distension-mediated SABR was employed via insertion of a 150-cm3 air-inflated endorectal balloon. A Foley catheter loaded with 3 beacon transponders was used for urethra visualization and online tracking. MRI-based planning using Volumetric Modulated Arc Therapy - Image Guided Radiotherapy (VMAT-IGRT) with inverse dose painting was employed in delivering the planning target volume (PTV) dose and in sculpting exposure of organs at risk (OARs). A 2-mm margin was used for PTV expansion, reduced to 0 mm at the interface with critical OARs. All plans fulfilled Dmean ≥45 Gy. Target motion ≥2 mm/5 s motions mandated treatment interruption and target realignment prior to completion of the planned dose delivery. Results Patient compliance to the rectal distension-mediated immobilization protocol was excellent, achieving reproducible daily prostate localization at a patient-specific retropubic niche. Online tracking recorded ≤1-mm intrafractional target deviations in 95% of treatment sessions, while target realignment in ≥2-mm deviations enabled treatment completion as scheduled in all cases. The cumulative incidence rates of late grade ≥2 genitourinary (GU) and gastrointestinal (GI) toxicities were 5.3% and 1.1%, respectively. The favorable toxicity profile was corroborated by patient-reported quality of life (QOL) outcomes. Median prostate-specific antigen (PSA) nadir by 5 years was 0.19 ng/ml. The cumulative incidence rate of biochemical failure using the Phoenix definition was 2%, 16.6%, and 27.2% for the combined low/favorable-intermediate, unfavorable intermediate, and high-risk categories, respectively. Patients with a PSA failure underwent a 68Ga-labeled prostate-specific membrane antigen (68Ga-PSMA) scan showing a 20.2% cumulative incidence of intraprostatic relapses in biopsy International Society of Urological Pathology (ISUP) grade ≥3. Conclusion The rectal distension-mediated technique is feasible and well tolerated. Dose escalation to 45 Gy with urethra-sparing results in excellent toxicity profiles and PSA relapse rates similar to those reported by other dose-escalated regimens. The existence of intraprostatic recurrences in patients with high-risk features confirms the notion of a high α/β ratio in these phenotypes resulting in diminished effectiveness with hypofractionated dose escalation.
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Affiliation(s)
- Carlo Greco
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Oriol Pares
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Nuno Pimentel
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Vasco Louro
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Beatriz Nunes
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Justyna Kociolek
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Joep Stroom
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Sandra Vieira
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Dalila Mateus
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Maria Joao Cardoso
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Ana Soares
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Joao Marques
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Elda Freitas
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Graça Coelho
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Zvi Fuks
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
- Memorial Sloan Kettering Cancer Center, New York, NY, United States
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