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Rondeau JD, Van de Velde JA, Bouidida Y, Sonveaux P. Subclinical dose irradiation triggers human breast cancer migration via mitochondrial reactive oxygen species. Cancer Metab 2024; 12:20. [PMID: 38978126 PMCID: PMC11229245 DOI: 10.1186/s40170-024-00347-1] [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: 02/13/2024] [Accepted: 06/26/2024] [Indexed: 07/10/2024] Open
Abstract
BACKGROUND Despite technological advances in radiotherapy, cancer cells at the tumor margin and in diffusive infiltrates can receive subcytotoxic doses of photons. Even if only a minority of cancer cells are concerned, phenotypic consequences could be important considering that mitochondrial DNA (mtDNA) is a primary target of radiation and that damage to mtDNA can persist. In turn, mitochondrial dysfunction associated with enhanced mitochondrial ROS (mtROS) production could promote cancer cell migration out of the irradiation field in a natural attempt to escape therapy. In this study, using MCF7 and MDA-MB-231 human breast cancer cells as models, we aimed to elucidate the molecular mechanisms supporting a mitochondrial contribution to cancer cell migration induced by subclinical doses of irradiation (< 2 Gy). METHODS Mitochondrial dysfunction was tested using mtDNA multiplex PCR, oximetry, and ROS-sensitive fluorescent reporters. Migration was tested in transwells 48 h after irradiation in the presence or absence of inhibitors targeting specific ROS or downstream effectors. Among tested inhibitors, we designed a mitochondria-targeted version of human catalase (mtCAT) to selectively inactivate mitochondrial H2O2. RESULTS Photon irradiation at subclinical doses (0.5 Gy for MCF7 and 0.125 Gy for MDA-MB-231 cells) sequentially affected mtDNA levels and/or integrity, increased mtROS production, increased MAP2K1/MEK1 gene expression, activated ROS-sensitive transcription factors NF-κB and AP1 and stimulated breast cancer cell migration. Targeting mtROS pharmacologically by MitoQ or genetically by mtCAT expression mitigated migration induced by a subclinical dose of irradiation. CONCLUSION Subclinical doses of photon irradiation promote human breast cancer migration, which can be countered by selectively targeting mtROS.
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Affiliation(s)
- Justin D Rondeau
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, 1200, Belgium
| | - Justine A Van de Velde
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, 1200, Belgium
| | - Yasmine Bouidida
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, 1200, Belgium
| | - Pierre Sonveaux
- Pole of Pharmacology and Therapeutics, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCLouvain), Brussels, 1200, Belgium.
- WELBIO Department, WEL Research Institute, Wavre, 1300, Belgium.
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Starling MTM, Thibodeau S, de Sousa CFPM, Restini FCF, Viani GA, Gouveia AG, Mendez LC, Marta GN, Moraes FY. Optimizing Clinical Implementation of Hypofractionation: Comprehensive Evidence Synthesis and Practical Guidelines for Low- and Middle-Income Settings. Cancers (Basel) 2024; 16:539. [PMID: 38339290 PMCID: PMC10854666 DOI: 10.3390/cancers16030539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
The global cancer burden, especially in low- and middle-income countries (LMICs), worsens existing disparities, amplified by the rising costs of advanced treatments. The shortage of radiation therapy (RT) services is a significant issue in LMICs. Extended conventional treatment regimens pose significant challenges, especially in resource-limited settings. Hypofractionated radiotherapy (HRT) and ultra-hypofractionated/stereotactic body radiation therapy (SBRT) offer promising alternatives by shortening treatment durations. This approach optimizes the utilization of radiotherapy machines, making them more effective in meeting the growing demand for cancer care. Adopting HRT/SBRT holds significant potential, especially in LMICs. This review provides the latest clinical evidence and guideline recommendations for the application of HRT/SBRT in the treatment of breast, prostate, and lung cancers. It emphasizes the critical importance of rigorous training, technology, stringent quality assurance, and safety protocols to ensure precise and secure treatments. Additionally, it addresses practical considerations for implementing these treatments in LMICs, highlighting the need for comprehensive support and collaboration to enhance patient access to advanced cancer care.
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Affiliation(s)
| | - Stephane Thibodeau
- Division of Radiation Oncology, Department of Oncology, Kingston General Hospital, Queen’s University, Kingston, ON K7L 3N6, Canada
| | | | | | - Gustavo A. Viani
- Department of Medical Imagings, Ribeirão Preto Medical School, Hematology and Oncology of University of São Paulo (FMRP-USP), Ribeirão Preto 14049-900, Brazil
- Latin America Cooperative Oncology Group (LACOG), Porto Alegre 90619-900, Brazil
| | - Andre G. Gouveia
- Latin America Cooperative Oncology Group (LACOG), Porto Alegre 90619-900, Brazil
- Division of Radiation Oncology, Department of Oncology, Juravinski Cancer Centre, McMaster University, Hamilton, ON L8V 5C2, Canada
| | - Lucas C. Mendez
- Division of Radiation Oncology, Department of Oncology, London Health Sciences Centre, London, ON N6A 5W9, Canada
| | - Gustavo Nader Marta
- Radiation Oncology Department, Hospital Sirio Libanês, Sao Paulo 01308-050, Brazil
- Latin America Cooperative Oncology Group (LACOG), Porto Alegre 90619-900, Brazil
| | - Fabio Ynoe Moraes
- Division of Radiation Oncology, Department of Oncology, Kingston General Hospital, Queen’s University, Kingston, ON K7L 3N6, Canada
- Latin America Cooperative Oncology Group (LACOG), Porto Alegre 90619-900, Brazil
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Belkacemi Y, Biston MC, Benchekroun N, Benider A, Chargari C, Debbi K, Doré M, El Kacimi H, Flandin I, Lalya I, Samlali H, Sellal N, Supiot S. Limited applicability and implementation of the international oncology treatments guidelines in low- and middle-income countries, an example from the Mediterranean area borders. Cancer Radiother 2023; 27:666-675. [PMID: 37550156 DOI: 10.1016/j.canrad.2023.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 08/09/2023]
Abstract
The quality of cancer care in the modern era is based on a precise diagnosis and personalized therapy according to patients and their disease based on validated guidelines with a high level of evidence. During cancer patients' management, the objective is first to make an accurate diagnosis and then offer the best treatment, validated beforehand in a multidisciplinary board meeting, with the best benefit/risk ratio. In the context of many low- and middle-income countries, the limited available means do not allow an adequate offer, resulting in non-optimal patients' care. In addition, in many low- and middle-income countries, priority can be given to other types of disease than cancer, which may considerably reduce allocation of specific resources to cancer care. Thus, the limited availability of systemic therapy, radiotherapy machines, brachytherapy and technological development may come up against another difficulty, that of geographical distribution of the means in the countries or a lack of expertise due to insufficient training programs. For all these reasons, the implementation of the guidelines established in Western countries could be impossible for many low- and middle-income countries which, moreover, have to face a completely different epidemiology of cancers compared to developed countries. In this work, we will discuss through a few examples of common cancers on both borders of the Mediterranean area, the applicability of the guidelines and the limits of their implementation for optimal cancer care.
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Affiliation(s)
- Y Belkacemi
- Department of Radiation Oncology and Henri-Mondor Breast Center, centre hospitalier universitaire Henri-Mondor, AP-HP, université Paris-Est Créteil, Créteil, France; Inserm U955, i-Biot Team, IMRB, university of Paris-Est Crétil, Créteil, France.
| | - M-C Biston
- Centre Léon-Bérard and Creatis, CNRS UMR 5225, Inserm U1044, Insa-Lyon, université Lyon 1, Villeurbanne, France
| | - N Benchekroun
- Department of Radiation Oncology, centre Mohamed-VI, université de Casablanca, Casablanca, Morocco
| | - A Benider
- Department of Radiation Oncology, centre Mohamed-VI, université de Casablanca, Casablanca, Morocco
| | - C Chargari
- Department of Radiation Oncology, groupe hospitalier Pitié-Salpêtrière, AP-HP, Sorbonne Université Paris VI, Paris, France
| | - K Debbi
- Department of Radiation Oncology and Henri-Mondor Breast Center, centre hospitalier universitaire Henri-Mondor, AP-HP, université Paris-Est Créteil, Créteil, France; Inserm U955, i-Biot Team, IMRB, university of Paris-Est Crétil, Créteil, France
| | - M Doré
- Department of Radiation Oncology, Institute de cancérologie de l'Ouest (ICO) centre René-Gauducheau, Saint-Herblain, France
| | - H El Kacimi
- Department of Radiation Oncology, Institut d'oncologie de Rabat, Rabat, Morocco
| | - I Flandin
- Department of Radiation Oncology, centre hospitalier universitaire de Grenoble, Grenoble, France
| | - I Lalya
- Department of Radiation Oncology, hôpital militaire Mohamed-V, Rabat, Morocco
| | - H Samlali
- Department of Radiation Oncology, clinique d'oncologie le Littoral, Casablanca, Morocco
| | - N Sellal
- Department of Radiation Oncology, hôpital universitaire Mohmed-VI, université Abdelmalek-Essadi, Tanger, Morocco
| | - S Supiot
- Department of Radiation Oncology, Institute de cancérologie de l'Ouest (ICO) centre René-Gauducheau, Saint-Herblain, France; Université de Nantes, Nantes, France
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Sabbagh A, Weiss J, Tawk B, Mohammed MA, Abdulbaki H, Moraes FY, Grover S, Yap ML, Zubizarreta E, Lievens Y, Rodin D, Mohamad O. Hypofractionation Adoption in Prostate Cancer Radiotherapy: Results of an International Survey. JCO Glob Oncol 2023; 9:e2300046. [PMID: 37319396 PMCID: PMC10497301 DOI: 10.1200/go.23.00046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/22/2023] [Accepted: 04/14/2023] [Indexed: 06/17/2023] Open
Abstract
PURPOSE Hypofractionation is noninferior to conventional fractionation in the treatment of localized prostate cancer. Using results from the European Society of Radiation Oncology's (ESTRO) Global Impact of Radiotherapy in Oncology (GIRO) initiative survey on hypofractionation, this study identifies rates of adoption, facilitating factors, and barriers to adoption of hypofractionation in prostate cancer across World Bank income groups. MATERIALS AND METHODS The ESTRO-GIRO initiative administered an international, anonymous, electronic survey to radiation oncologists from 2018 to 2019. Physician demographics, clinical practice characteristics, and hypofractionation regimen use (if any) for several prostate cancer scenarios were collected. Responders were asked about specific justifications and barriers to adopting hypofractionation, and responses were stratified by World Bank income group. Multivariate logistic regression models were used to analyze variables associated with hypofractionation preference. RESULTS A total of 1,157 physician responses were included. Most respondents (60%) were from high-income countries (HICs). In the curative setting, hypofractionation was most often preferred in low- and intermediate-risk prostate cancers, with 52% and 47% of respondents reporting hypofractionation use in ≥50% of patients, respectively. These rates drop to 35% and 20% in high-risk prostate cancer and where pelvic irradiation is indicated. Most respondents (89%) preferred hypofractionation in the palliative setting. Overall, respondents from upper-middle-income countries and lower-middle- and low-income countries were significantly less likely to prefer hypofractionation than those from HICs (P < .001). The most frequently cited justification and barrier were availability of published evidence and fear of worse late toxicity, respectively. CONCLUSION Hypofractionation preference varies by indication and World Bank income group, with greater acceptance among providers in HICs for all indications. These results provide a basis for targeted interventions to increase provider acceptance of this treatment modality.
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Affiliation(s)
- Ali Sabbagh
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
- American University of Beirut Medical Center, Beirut, Lebanon
| | - Jessica Weiss
- Department of Biostatistics, Princess Margaret Cancer Centre, University of Toronto, Toronto, ON, Canada
| | - Bouchra Tawk
- Clinical Cooperation Unit—Translational Radiation Oncology, National Center for Tumoral Diseases NCT Heidelberg, German Cancer Research Center (DKFZ), Heidelberg University Hospital, Heidelberg, Germany
| | - Mohammed A. Mohammed
- American University of Beirut Medical Center, Beirut, Lebanon
- Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Hasan Abdulbaki
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
| | - Fabio Y. Moraes
- Department of Oncology, Division of Radiation Oncology, Queen's University, Kingston, ON, Canada
| | - Surbhi Grover
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Philadelphia, PA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Mei Ling Yap
- Collaboration for Cancer Outcomes, Research and Evaluation (CCORE), Ingham Institute, UNSW Sydney, Liverpool, NSW, Australia
- Liverpool and Macarthur Cancer Therapy Centres, Western Sydney University, Campbelltown, NSW, Australia
- The George Institute for Global Health, UNSW Sydney, Newtown, NSW, Australia
| | | | - Yolande Lievens
- Ghent University Hospital and Ghent University, Ghent, Belgium
| | - Danielle Rodin
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, ON, Canada
| | - Osama Mohamad
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
- Department of Urology, University of California San Francisco, San Francisco, CA
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