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Horst F, Bodenstein E, Brand M, Hans S, Karsch L, Lessmann E, Löck S, Schürer M, Pawelke J, Beyreuther E. Dose and dose rate dependence of the tissue sparing effect at ultra-high dose rate studied for proton and electron beams using the zebrafish embryo model. Radiother Oncol 2024; 194:110197. [PMID: 38447870 DOI: 10.1016/j.radonc.2024.110197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024]
Abstract
PURPOSE A better characterization of the dependence of the tissue sparing effect at ultra-high dose rate (UHDR) on physical beam parameters (dose, dose rate, radiation quality) would be helpful towards a mechanistic understanding of the FLASH effect and for its broader clinical translation. To address this, a comprehensive study on the normal tissue sparing at UHDR using the zebrafish embryo (ZFE) model was conducted. METHODS One-day-old ZFE were irradiated over a wide dose range (15-95 Gy) in three different beams (proton entrance channel, proton spread out Bragg peak and 30 MeV electrons) at UHDR and reference dose rate. After irradiation the ZFE were incubated for 4 days and then analyzed for four different biological endpoints (pericardial edema, curved spine, embryo length and eye diameter). RESULTS Dose-effect curves were obtained and a sparing effect at UHDR was observed for all three beams. It was demonstrated that proton relative biological effectiveness and UHDR sparing are both relevant to predict the resulting dose response. Dose dependent FLASH modifying factors (FMF) for ZFE were found to be compatible with rodent data from the literature. It was found that the UHDR sparing effect saturates at doses above ∼ 50 Gy with an FMF of ∼ 0.7-0.8. A strong dose rate dependence of the tissue sparing effect in ZFE was observed. The magnitude of the maximum sparing effect was comparable for all studied biological endpoints. CONCLUSION The ZFE model was shown to be a suitable pre-clinical high-throughput model for radiobiological studies on FLASH radiotherapy, providing results comparable to rodent models. This underlines the relevance of ZFE studies for FLASH radiotherapy research.
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Affiliation(s)
- Felix Horst
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Elisabeth Bodenstein
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies TU Dresden and Cluster of Excellence 'Physics of Life', Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies TU Dresden and Cluster of Excellence 'Physics of Life', Technische Universität Dresden, Dresden, Germany
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Elisabeth Lessmann
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Steffen Löck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Schürer
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; National Center for Tumor Diseases Dresden (NCT/UCC), Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Dresden, Germany.
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Schneider M, Schilz JD, Schürer M, Gantz S, Dreyer A, Rothe G, Tillner F, Bodenstein E, Horst F, Beyreuther E. SAPPHIRE -establishment of small animal proton and photon image-guided radiation experiments. Phys Med Biol 2024; 69:095020. [PMID: 38537301 DOI: 10.1088/1361-6560/ad3887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/26/2024] [Indexed: 04/25/2024]
Abstract
Thein vivoevolution of radiotherapy necessitates innovative platforms for preclinical investigation, bridging the gap between bench research and clinical applications. Understanding the nuances of radiation response, specifically tailored to proton and photon therapies, is critical for optimizing treatment outcomes. Within this context, preclinicalin vivoexperimental setups incorporating image guidance for both photon and proton therapies are pivotal, enabling the translation of findings from small animal models to clinical settings. TheSAPPHIREproject represents a milestone in this pursuit, presenting the installation of the small animal radiation therapy integrated beamline (SmART+ IB, Precision X-Ray Inc., Madison, Connecticut, USA) designed for preclinical image-guided proton and photon therapy experiments at University Proton Therapy Dresden. Through Monte Carlo simulations, low-dose on-site cone beam computed tomography imaging and quality assurance alignment protocols, the project ensures the safe and precise application of radiation, crucial for replicating clinical scenarios in small animal models. The creation of Hounsfield lookup tables and comprehensive proton and photon beam characterizations within this system enable accurate dose calculations, allowing for targeted and controlled comparison experiments. By integrating these capabilities,SAPPHIREbridges preclinical investigations and potential clinical applications, offering a platform for translational radiobiology research and cancer therapy advancements.
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Affiliation(s)
- Moritz Schneider
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Joshua D Schilz
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Michael Schürer
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- National Center for Tumor Diseases (NCT/UCC), Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Medizinische Fakultät and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Sebastian Gantz
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
| | - Anne Dreyer
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
| | - Gert Rothe
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Falk Tillner
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Elisabeth Bodenstein
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
| | - Felix Horst
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany
| | - Elke Beyreuther
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
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3
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Metzkes-Ng J, Brack FE, Kroll F, Bernert C, Bock S, Bodenstein E, Brand M, Cowan TE, Gebhardt R, Hans S, Helbig U, Horst F, Jansen J, Kraft SD, Krause M, Leßmann E, Löck S, Pawelke J, Püschel T, Reimold M, Rehwald M, Richter C, Schlenvoigt HP, Schramm U, Schürer M, Seco J, Szabó ER, Umlandt MEP, Zeil K, Ziegler T, Beyreuther E. The DRESDEN PLATFORM is a research hub for ultra-high dose rate radiobiology. Sci Rep 2023; 13:20611. [PMID: 37996453 PMCID: PMC10667545 DOI: 10.1038/s41598-023-46873-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023] Open
Abstract
The recently observed FLASH effect describes the observation of normal tissue protection by ultra-high dose rates (UHDR), or dose delivery in a fraction of a second, at similar tumor-killing efficacy of conventional dose delivery and promises great benefits for radiotherapy patients. Dedicated studies are now necessary to define a robust set of dose application parameters for FLASH radiotherapy and to identify underlying mechanisms. These studies require particle accelerators with variable temporal dose application characteristics for numerous radiation qualities, equipped for preclinical radiobiological research. Here we present the DRESDEN PLATFORM, a research hub for ultra-high dose rate radiobiology. By uniting clinical and research accelerators with radiobiology infrastructure and know-how, the DRESDEN PLATFORM offers a unique environment for studying the FLASH effect. We introduce its experimental capabilities and demonstrate the platform's suitability for systematic investigation of FLASH by presenting results from a concerted in vivo radiobiology study with zebrafish embryos. The comparative pre-clinical study was conducted across one electron and two proton accelerator facilities, including an advanced laser-driven proton source applied for FLASH-relevant in vivo irradiations for the first time. The data show a protective effect of UHDR irradiation up to [Formula: see text] and suggests consistency of the protective effect even at escalated dose rates of [Formula: see text]. With the first clinical FLASH studies underway, research facilities like the DRESDEN PLATFORM, addressing the open questions surrounding FLASH, are essential to accelerate FLASH's translation into clinical practice.
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Affiliation(s)
| | | | - Florian Kroll
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Constantin Bernert
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- TUD Dresden University of Technology, Dresden, Germany
| | - Stefan Bock
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Elisabeth Bodenstein
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies (CRTD), TUD Dresden University of Technology, Dresden, Germany
- Cluster of Excellence - Physics of Life, TUD Dresden University of Technology, Dresden, Germany
| | - Thomas E Cowan
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- TUD Dresden University of Technology, Dresden, Germany
| | - René Gebhardt
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies (CRTD), TUD Dresden University of Technology, Dresden, Germany
- Cluster of Excellence - Physics of Life, TUD Dresden University of Technology, Dresden, Germany
| | - Uwe Helbig
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Felix Horst
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Jeannette Jansen
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | | | - Mechthild Krause
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Dresden, Germany
- National Center for Tumor Diseases (NCT/UCC), Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Medizinische Fakultät and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | | | - Steffen Löck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | | | | | | | - Christian Richter
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Dresden, Germany
| | | | - Ulrich Schramm
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- TUD Dresden University of Technology, Dresden, Germany
| | - Michael Schürer
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- National Center for Tumor Diseases (NCT/UCC), Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Medizinische Fakultät and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Joao Seco
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Emília Rita Szabó
- ELI ALPS, ELI-HU Non-Profit Ltd., Szeged, Hungary
- Department of Oncotherapy, University of Szeged, Szeged, Hungary
| | - Marvin E P Umlandt
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- TUD Dresden University of Technology, Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Tim Ziegler
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- TUD Dresden University of Technology, Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
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Reimold M, Assenbaum S, Bernert C, Beyreuther E, Brack FE, Karsch L, Kraft SD, Kroll F, Nossula A, Pawelke J, Rehwald M, Schlenvoigt HP, Schramm U, Umlandt MEP, Zeil K, Ziegler T, Metzkes-Ng J. Dosimetry for radiobiological in vivoexperiments at laser plasma-based proton accelerators. Phys Med Biol 2023; 68:185009. [PMID: 37579761 DOI: 10.1088/1361-6560/acf025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 08/14/2023] [Indexed: 08/16/2023]
Abstract
Objective.Laser plasma-based accelerators (LPAs) of protons can contribute to research of ultra-high dose rate radiobiology as they provide pulse dose rates unprecedented at medical proton sources. Yet, LPAs pose challenges regarding precise and accurate dosimetry due to the high pulse dose rates, but also due to the sources' lower spectral stability and pulsed operation mode. Forin vivomodels, further challenges arise from the necessary small field dosimetry for volumetric dose distributions. For these novel source parameters and intended applications, a dosimetric standard needs to be established.Approach.In this work, we present a dosimetry and beam monitoring framework forin vivoirradiations of small target volumes with LPA protons, solving aforementioned challenges. The volumetric dose distribution in a sample (mean dose value and lateral/depth dose inhomogeneity) is provided by combining two independent dose measurements using radiochromic films (dose rate-independent) and ionization chambers (dose rate-dependent), respectively. The unique feature of the dosimetric setup is beam monitoring with a transmission time-of-flight spectrometer to quantify spectral fluctuations of the irradiating proton pulses. The resulting changes in the depth dose profile during irradiation of anin vivosample are hence accessible and enable pulse-resolved depth dose correction for each dose measurement.Main results.A first successful small animal pilot study using an LPA proton source serves as a testcase for the presented dosimetry approach and proves its performance in a realistic setting.Significance.With several facilities worldwide either setting up or already using LPA infrastructure for radiobiological studies with protons, the importance of LPA-adapted dosimetric frameworks as presented in this work is clearly underlined.
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Affiliation(s)
- Marvin Reimold
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Stefan Assenbaum
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Constantin Bernert
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, D-01309 Dresden, Germany
| | | | - Leonhard Karsch
- OncoRay-National Center for Radiation Research in Oncology, D-01309 Dresden, Germany
| | - Stephan D Kraft
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
| | - Florian Kroll
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
| | - Alexej Nossula
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Martin-Luther-Universität Halle-Wittenberg, D-06120 Halle, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, D-01309 Dresden, Germany
| | - Martin Rehwald
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
| | | | - Ulrich Schramm
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Marvin E P Umlandt
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
| | - Tim Ziegler
- Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Technische Universität Dresden, D-01062 Dresden, Germany
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5
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Beyreuther E, Horst F, Brand M, Hans S, Karsch L, Lessmann E, Löck S, Schürer M, Pawelke J. In Regard to Böhlen et al. Int J Radiat Oncol Biol Phys 2023; 115:1006-1007. [PMID: 36822772 DOI: 10.1016/j.ijrobp.2022.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/06/2022] [Indexed: 02/23/2023]
Affiliation(s)
- Elke Beyreuther
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany; OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.
| | - Felix Horst
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany; OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies and Cluster of Excellence "Physics of Life", Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies and Cluster of Excellence "Physics of Life", Technische Universität Dresden, Dresden, Germany
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany; OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Elisabeth Lessmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Steffen Löck
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Schürer
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; National Center for Tumor Diseases Dresden (NCT/UCC), German Cancer Research Center (DKFZ), Heidelberg, Germany, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany; OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
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6
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Soltwedel J, Suckert T, Beyreuther E, Schneider M, Boucsein M, Bodenstein E, Nexhipi S, Stolz-Kieslich L, Krause M, von Neubeck C, Haase R, Lühr A, Dietrich A. Slice2Volume: Fusion of multimodal medical imaging and light microscopy data of irradiation-injured brain tissue in 3D. Radiother Oncol 2023; 182:109591. [PMID: 36858201 DOI: 10.1016/j.radonc.2023.109591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/20/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023]
Abstract
Comprehending cellular changes of radiation-induced brain injury is crucial to prevent and treat the pathology. We provide a unique open dataset of proton-irradiated mouse brains consisting of medical imaging, radiation dose simulations, and large-scale microscopy images, all registered into a common coordinate system. This allows dose-dependent analyses on single-cell level.
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Affiliation(s)
- Johannes Soltwedel
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden 01309, Germany; DFG Cluster of Excellence Physics of Life, TU Dresden, Dresden 01307, Germany
| | - Theresa Suckert
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg 69120, Germany; Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden 01328, Germany
| | - Moritz Schneider
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden 01328, Germany
| | - Marc Boucsein
- Im Neuenheimer Feld 223, E050 Clinical Cooperation Unit Radiation Oncology, 69120 Heidelberg, Germany; Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg 69120, Germany
| | - Elisabeth Bodenstein
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden 01309, Germany
| | - Sindi Nexhipi
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden 01309, Germany
| | - Liane Stolz-Kieslich
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Mechthild Krause
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden 01309, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg 69120, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden 01307, Germany; National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden 01307, Germany
| | - Cläre von Neubeck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg 69120, Germany; Department of Particle Therapy, University Hospital Essen, University of Duisburg-Essen, Essen 45147, Germany
| | - Robert Haase
- DFG Cluster of Excellence Physics of Life, TU Dresden, Dresden 01307, Germany
| | - Armin Lühr
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden 01309, Germany; Medical Physics and Radiotherapy, Department of Physics, TU Dortmund University, Dortmund 44227, Germany
| | - Antje Dietrich
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technical University Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01309, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg 69120, Germany.
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7
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Reimold M, Assenbaum S, Bernert C, Beyreuther E, Brack FE, Karsch L, Kraft SD, Kroll F, Loeser M, Nossula A, Pawelke J, Püschel T, Schlenvoigt HP, Schramm U, Umlandt MEP, Zeil K, Ziegler T, Metzkes-Ng J. Time-of-flight spectroscopy for laser-driven proton beam monitoring. Sci Rep 2022; 12:21488. [PMID: 36509788 PMCID: PMC9744900 DOI: 10.1038/s41598-022-25120-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/24/2022] [Indexed: 12/15/2022] Open
Abstract
Application experiments with laser plasma-based accelerators (LPA) for protons have to cope with the inherent fluctuations of the proton source. This creates a demand for non-destructive and online spectral characterization of the proton pulses, which are for application experiments mostly spectrally filtered and transported by a beamline. Here, we present a scintillator-based time-of-flight (ToF) beam monitoring system (BMS) for the recording of single-pulse proton energy spectra. The setup's capabilities are showcased by characterizing the spectral stability for the transport of LPA protons for two beamline application cases. For the two beamline settings monitored, data of 122 and 144 proton pulses collected over multiple days were evaluated, respectively. A relative energy uncertainty of 5.5% (1[Formula: see text]) is reached for the ToF BMS, allowing for a Monte-Carlo based prediction of depth dose distributions, also used for the calibration of the device. Finally, online spectral monitoring combined with the prediction of the corresponding depth dose distribution in the irradiated samples is demonstrated to enhance applicability of plasma sources in dose-critical scenarios.
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Affiliation(s)
- Marvin Reimold
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany.
- Technische Universität Dresden, 01062, Dresden, Germany.
| | - Stefan Assenbaum
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
| | - Constantin Bernert
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, 01309, Dresden, Germany
| | - Florian-Emanuel Brack
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, 01309, Dresden, Germany
| | - Stephan D Kraft
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
| | - Florian Kroll
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
| | - Markus Loeser
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
| | - Alexej Nossula
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Martin-Luther-Universität Halle-Wittenberg, 06120, Halle, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- OncoRay - National Center for Radiation Research in Oncology, 01309, Dresden, Germany
| | - Thomas Püschel
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
| | | | - Ulrich Schramm
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
| | - Marvin E P Umlandt
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
| | - Tim Ziegler
- Helmholtz-Zentrum Dresden, Rossendorf, 01328, Dresden, Germany
- Technische Universität Dresden, 01062, Dresden, Germany
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8
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Schneider M, Bodenstein E, Bock J, Dietrich A, Gantz S, Heuchel L, Krause M, Lühr A, von Neubeck C, Nexhipi S, Schürer M, Tillner F, Beyreuther E, Suckert T, Müller JR. Combined proton radiography and irradiation for high-precision preclinical studies in small animals. Front Oncol 2022; 12:982417. [PMID: 36419890 PMCID: PMC9677333 DOI: 10.3389/fonc.2022.982417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/02/2022] [Indexed: 08/22/2023] Open
Abstract
BACKGROUND AND PURPOSE Proton therapy has become a popular treatment modality in the field of radiooncology due to higher spatial dose conformity compared to conventional radiotherapy, which holds the potential to spare normal tissue. Nevertheless, unresolved research questions, such as the much debated relative biological effectiveness (RBE) of protons, call for preclinical research, especially regarding in vivo studies. To mimic clinical workflows, high-precision small animal irradiation setups with image-guidance are needed. MATERIAL AND METHODS A preclinical experimental setup for small animal brain irradiation using proton radiographies was established to perform planning, repositioning, and irradiation of mice. The image quality of proton radiographies was optimized regarding the resolution, contrast-to-noise ratio (CNR), and minimal dose deposition in the animal. Subsequently, proof-of-concept histological analysis was conducted by staining for DNA double-strand breaks that were then correlated to the delivered dose. RESULTS The developed setup and workflow allow precise brain irradiation with a lateral target positioning accuracy of<0.26mm for in vivo experiments at minimal imaging dose of<23mGy per mouse. The custom-made software for image registration enables the fast and precise animal positioning at the beam with low observer-variability. DNA damage staining validated the successful positioning and irradiation of the mouse hippocampus. CONCLUSION Proton radiography enables fast and effective high-precision lateral alignment of proton beam and target volume in mouse irradiation experiments with limited dose exposure. In the future, this will enable irradiation of larger animal cohorts as well as fractionated proton irradiation.
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Affiliation(s)
- Moritz Schneider
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Elisabeth Bodenstein
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Johanna Bock
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Antje Dietrich
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- German Cancer Consortium Deutsches Konsortium für Translationale Krebsforschung (DKTK), partner site Dresden- German Cancer Research Center DKFZ, Heidelberg, Germany
| | - Sebastian Gantz
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Lena Heuchel
- Technical University (TU) Dortmund- Faculty of Physics, Medical Physics and Radiotherapy, Dortmund, Germany
| | - Mechthild Krause
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
- German Cancer Consortium Deutsches Konsortium für Translationale Krebsforschung (DKTK), partner site Dresden- German Cancer Research Center DKFZ, Heidelberg, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universitat Dresden, Dresden, Germany
| | - Armin Lühr
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
- Technical University (TU) Dortmund- Faculty of Physics, Medical Physics and Radiotherapy, Dortmund, Germany
| | - Cläre von Neubeck
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- German Cancer Consortium Deutsches Konsortium für Translationale Krebsforschung (DKTK), partner site Dresden- German Cancer Research Center DKFZ, Heidelberg, Germany
- Department of Particle Therapy, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Sindi Nexhipi
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Michael Schürer
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - Falk Tillner
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universitat Dresden, Dresden, Germany
| | - Elke Beyreuther
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Theresa Suckert
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- German Cancer Consortium Deutsches Konsortium für Translationale Krebsforschung (DKTK), partner site Dresden- German Cancer Research Center DKFZ, Heidelberg, Germany
| | - Johannes Richard Müller
- OncoRay, National Center for Radiation Research in Oncology- Faculty of Medicine and University Hospital Carl Gustav Carus- Technische Universitat Dresden-Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Deutsche Forschungsgemeinschaft Cluster of Excellence 'Physics of Life', Technische Universität Dresden, Dresden, Germany
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9
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Jansen J, Beyreuther E, García-Calderón D, Karsch L, Knoll J, Pawelke J, Schürer M, Seco J. oChanges in Radical Levels as a Cause for the FLASH effect: Impact of beam structure parameters at ultra-high dose rates on oxygen depletion in water. Radiother Oncol 2022; 175:193-196. [PMID: 36030933 DOI: 10.1016/j.radonc.2022.08.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 01/15/2023]
Abstract
The influence of different average and bunch dose rates in electron beams on the FLASH effect was investigated. The present study measures O2 content in water at different beam pulse patterns and finds strong correlation with biological data, strengthening the hypothesis of radical-related mechanisms as a reason for the FLASH effect.
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Affiliation(s)
- Jeannette Jansen
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany
| | - Daniel García-Calderón
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Leonhard Karsch
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Jan Knoll
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Jörg Pawelke
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Michael Schürer
- National Center for Tumor Diseases Dresden (NCT/UCC), Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Joao Seco
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany.
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10
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Naumann M, Czempiel T, Lößner AJ, Pape K, Beyreuther E, Löck S, Drukewitz S, Hennig A, von Neubeck C, Klink B, Krause M, William D, Stange DE, Bütof R, Dietrich A. Combined Systemic Drug Treatment with Proton Therapy: Investigations on Patient-Derived Organoids. Cancers (Basel) 2022; 14:cancers14153781. [PMID: 35954444 PMCID: PMC9367296 DOI: 10.3390/cancers14153781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 02/01/2023] Open
Abstract
To optimize neoadjuvant radiochemotherapy of pancreatic ductal adenocarcinoma (PDAC), the value of new irradiation modalities such as proton therapy needs to be investigated in relevant preclinical models. We studied individual treatment responses to RCT using patient-derived PDAC organoids (PDO). Four PDO lines were treated with gemcitabine, 5-fluorouracile (5FU), photon and proton irradiation and combined RCT. Therapy response was subsequently measured via viability assays. In addition, treatment-naive PDOs were characterized via whole exome sequencing and tumorigenicity was investigated in NMRI Foxn1nu/nu mice. We found a mutational pattern containing common mutations associated with PDAC within the PDOs. Although we could unravel potential complications of the viability assay for PDOs in radiobiology, distinct synergistic effects of gemcitabine and 5FU with proton irradiation were observed in two PDO lines that may lead to further mechanistical studies. We could demonstrate that PDOs are a powerful tool for translational proton radiation research.
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Affiliation(s)
- Max Naumann
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Tabea Czempiel
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany; (T.C.); (S.D.); (B.K.); (D.W.)
| | - Anna Jana Lößner
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (A.J.L.); (K.P.); (A.H.); (D.E.S.)
| | - Kristin Pape
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (A.J.L.); (K.P.); (A.H.); (D.E.S.)
| | - Elke Beyreuther
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Steffen Löck
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, German Cancer Research Center (DKFZ), 69192 Heidelberg, Germany
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany
| | - Stephan Drukewitz
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany; (T.C.); (S.D.); (B.K.); (D.W.)
- Institute of Human Genetics, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Alexander Hennig
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (A.J.L.); (K.P.); (A.H.); (D.E.S.)
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
| | - Cläre von Neubeck
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- German Cancer Consortium (DKTK), Partner Site Dresden, German Cancer Research Center (DKFZ), 69192 Heidelberg, Germany
- Clinic for Particle Therapy, University Hospital Essen, Universität Duisburg Essen, 45147 Essen, Germany
| | - Barbara Klink
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany; (T.C.); (S.D.); (B.K.); (D.W.)
- Department of Genetics, Laboratoire National de Santé, 3555 Dudelange, Luxembourg
- Institute for Clinical Genetics, University Hospital Carl Gustav Carus, Technische Universität Dresden, ERN-GENTURIS, Hereditary Cancer Syndrome Center Dresden, 01307 Dresden, Germany
| | - Mechthild Krause
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, German Cancer Research Center (DKFZ), 69192 Heidelberg, Germany
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany
| | - Doreen William
- Core Unit for Molecular Tumor Diagnostics (CMTD), National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany; (T.C.); (S.D.); (B.K.); (D.W.)
- Institute for Clinical Genetics, University Hospital Carl Gustav Carus, Technische Universität Dresden, ERN-GENTURIS, Hereditary Cancer Syndrome Center Dresden, 01307 Dresden, Germany
| | - Daniel E. Stange
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (A.J.L.); (K.P.); (A.H.); (D.E.S.)
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
| | - Rebecca Bütof
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany
| | - Antje Dietrich
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01307 Dresden, Germany; (M.N.); (E.B.); (S.L.); (C.v.N.); (M.K.); (R.B.)
- German Cancer Consortium (DKTK), Partner Site Dresden, German Cancer Research Center (DKFZ), 69192 Heidelberg, Germany
- Correspondence:
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Karsch L, Pawelke J, Brand M, Hans S, Hideghéty K, Jansen J, Lessmann E, Löck S, Schürer M, Schurig R, Seco J, Szabó ER, Beyreuther E. Beam pulse structure and dose rate as determinants for the flash effect observed in zebrafish embryo. Radiother Oncol 2022; 173:49-54. [PMID: 35661675 DOI: 10.1016/j.radonc.2022.05.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/20/2022] [Accepted: 05/26/2022] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND PURPOSE Continuing recent experiments at the research electron accelerator ELBE at the Helmholtz-Zentrum Dresden-Rossendorf the influence of beam pulse structure on the Flash effect was investigated. MATERIALS AND METHODS The proton beam pulse structure of an isochronous cyclotron (UHDRiso) and a synchrocyclotron (UHDRsynchro) was mimicked at ELBE by quasi-continuous electron bunches at 13 MHz delivering mean dose rates of 287 Gy/s and 177 Gy/s and bunch dose rates of 106Gy/s and 109 Gy/s, respectively. For UHDRsynchro, 40 ms macro pulses at a frequency of 25 Hz superimposed the bunch delivery. For comparison, a maximum beam intensity (2.5 x 105 Gy/s mean and ∼109 Gy/s bunch dose rate) and a reference irradiation (of ∼8 Gy/min mean dose rate) were applied. Radiation induced changes were assessed in zebrafish embryos over four days post irradiation. RESULTS Relative to the reference a significant protecting Flash effect was observed for all electron beam pulse regimes with less severe damage the higher the mean dose rate of the electron beam. Accordingly, the macro pulsing induced prolongation of treatment time at UHDRsynchro regime reduces the protecting effect compared to the maximum regime delivered at same bunch but higher mean dose rate. The Flash effect of the UHDRiso regime was confirmed at a clinical isochronous cyclotron comparing the damage induced by proton beams delivered at 300 Gy/s and ∼9 Gy/min. CONCLUSION The recent findings indicate that the mean dose rate or treatment time are decisive for the normal tissue protecting Flash effect in zebrafish embryo.
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Affiliation(s)
- Leonhard Karsch
- Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Institute of Radiooncology - OncoRay, Dresden, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies TU Dresden (CRTD), and Cluster of Excellence 'Physics of Life', Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies TU Dresden (CRTD), and Cluster of Excellence 'Physics of Life', Technische Universität Dresden, Dresden, Germany
| | - Katalin Hideghéty
- ELI-ALPS, ELI-HU Non-Profit Ltd., Szeged, Hungary; Oncotherapy Department, University of Szeged, Szeged, Hungary
| | - Jeannette Jansen
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Elisabeth Lessmann
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Steffen Löck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Schürer
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; National Center for Tumor Diseases Dresden (NCT/UCC), Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Rico Schurig
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Joao Seco
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Physics and Astronomy, Heidelberg University, Germany
| | | | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Dresden, Germany.
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Beyreuther E, Pawelke J, Brand M, Hans S, Hideghéty K, Jansen J, Karsch L, Lessmann E, Löck S, Schürer M, Seco J, Szabo E, Schramm U. OC-0094 Beam pulse structure affects the magnitude of Flash effect in zebrafish embryo. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02470-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Beyreuther E, Brack FE, Brüchner K, Hans S, Jansen J, Karsch L, Kroll F, Lessmann E, Löck S, Metzkes-Ng J, Pawelke J, Reimold M, Schramm U, Szabó R, Zeil K. FLASH Modalities Track (Oral Presentations) ULTRA-HIGH DOSE RATE PROTON RADIOBIOLOGY AT THE “DRESDEN PLATFORM FOR HIGH DOSE-RATE RADIOBIOLOGY”. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01476-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bodenstein E, Beyreuther E, Bock J, Dietrich A, Pawelke J, Schürer M, Suckert T, Müller J, Lühr A. FLASH Modalities Track (Oral Presentations) FLAT PANEL PROTON RADIOGRAPHY IN HIGH-PRECISION IMAGE-GUIDED MOUSE BRAIN PROTON IRRADIATION. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01561-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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15
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Müller J, Leger S, Zwanenburg A, Suckert T, Lühr A, Beyreuther E, von Neubeck C, Krause M, Löck S, Dietrich A, Bütof R. Radiomics-based tumor phenotype determination based on medical imaging and tumor microenvironment in a preclinical setting. Radiother Oncol 2022; 169:96-104. [DOI: 10.1016/j.radonc.2022.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 02/06/2022] [Accepted: 02/14/2022] [Indexed: 12/18/2022]
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Pawelke J, Brand M, Hans S, Hideghety K, Karsch L, Lessmann E, Löck S, Schürer M, Szabó R, Beyreuther E. FLASH Modalities Track (Oral Presentations) INFLUENCE OF ELECTRON BEAM DOSE RATE AND PULSE STRUCTURE ON THE PROTECTING FLASH EFFECT OBSERVED IN ZEBRAFISH EMBRYO. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01453-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Suckert T, Nexhipi S, Dietrich A, Koch R, Kunz-Schughart LA, Bahn E, Beyreuther E. Models for Translational Proton Radiobiology-From Bench to Bedside and Back. Cancers (Basel) 2021; 13:4216. [PMID: 34439370 PMCID: PMC8395028 DOI: 10.3390/cancers13164216] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 12/25/2022] Open
Abstract
The number of proton therapy centers worldwide are increasing steadily, with more than two million cancer patients treated so far. Despite this development, pending questions on proton radiobiology still call for basic and translational preclinical research. Open issues are the on-going discussion on an energy-dependent varying proton RBE (relative biological effectiveness), a better characterization of normal tissue side effects and combination treatments with drugs originally developed for photon therapy. At the same time, novel possibilities arise, such as radioimmunotherapy, and new proton therapy schemata, such as FLASH irradiation and proton mini-beams. The study of those aspects demands for radiobiological models at different stages along the translational chain, allowing the investigation of mechanisms from the molecular level to whole organisms. Focusing on the challenges and specifics of proton research, this review summarizes the different available models, ranging from in vitro systems to animal studies of increasing complexity as well as complementing in silico approaches.
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Affiliation(s)
- Theresa Suckert
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01309 Dresden, Germany; (T.S.); (S.N.); (A.D.); (L.A.K.-S.)
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Sindi Nexhipi
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01309 Dresden, Germany; (T.S.); (S.N.); (A.D.); (L.A.K.-S.)
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, 01309 Dresden, Germany
| | - Antje Dietrich
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01309 Dresden, Germany; (T.S.); (S.N.); (A.D.); (L.A.K.-S.)
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Robin Koch
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany; (R.K.); (E.B.)
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
| | - Leoni A. Kunz-Schughart
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01309 Dresden, Germany; (T.S.); (S.N.); (A.D.); (L.A.K.-S.)
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
| | - Emanuel Bahn
- Heidelberg Institute of Radiation Oncology (HIRO), 69120 Heidelberg, Germany; (R.K.); (E.B.)
- Department of Radiation Oncology, Heidelberg University Hospital, 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany
- German Cancer Research Center (DKFZ), Clinical Cooperation Unit Radiation Oncology, 69120 Heidelberg, Germany
| | - Elke Beyreuther
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01309 Dresden, Germany; (T.S.); (S.N.); (A.D.); (L.A.K.-S.)
- Helmholtz-Zentrum Dresden—Rossendorf, Institute of Radiation Physics, 01328 Dresden, Germany
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18
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Görte J, Beyreuther E, Danen EHJ, Cordes N. Correction: Görte et al. Comparative Proton and Photon Irradiation Combined with Pharmacological Inhibitors in 3D Pancreatic Cancer Cultures. Cancers 2020, 12, 3216. Cancers (Basel) 2021; 13:cancers13133364. [PMID: 34282783 PMCID: PMC8268708 DOI: 10.3390/cancers13133364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Josephine Görte
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
| | - Elke Beyreuther
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
| | - Erik H. J. Danen
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333CC Leiden, The Netherlands;
| | - Nils Cordes
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
- German Cancer Consortium, Partner Site Dresden: German Cancer Research Center, 69120 Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Correspondence: ; Tel.: +49-351-458-7401; Fax: +49-351-458-7311
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Jansen J, Knoll J, Beyreuther E, Pawelke J, Skuza R, Hanley R, Brons S, Pagliari F, Seco J. Does FLASH deplete oxygen? Experimental evaluation for photons, protons, and carbon ions. Med Phys 2021; 48:3982-3990. [PMID: 33948958 DOI: 10.1002/mp.14917] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/01/2021] [Accepted: 04/06/2021] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To investigate experimentally, if FLASH irradiation depletes oxygen within water for different radiation types such as photons, protons, and carbon ions. METHODS This study presents measurements of the oxygen consumption in sealed, 3D-printed water phantoms during irradiation with x-rays, protons, and carbon ions at varying dose rates up to 340 Gy/s. The oxygen measurement was performed using an optical sensor allowing for noninvasive measurements. RESULTS Oxygen consumption in water only depends on dose, dose rate, and linear energy transfer (LET) of the irradiation. The total amount of oxygen depleted per 10 Gy was found to be 0.04% atm - 0.18% atm for 225 kV photons, 0.04% atm - 0.25% atm for 224 MeV protons, and 0.09% atm - 0.17% atm for carbon ions. Consumption depends on dose rate by an inverse power law and saturates for higher dose rates because of self-interactions of radicals. Higher dose rates yield lower oxygen consumption. No total depletion of oxygen was found for clinical doses. CONCLUSIONS FLASH irradiation does consume oxygen, but not enough to deplete all the oxygen present. For higher dose rates, less oxygen was consumed than at standard radiotherapy dose rates. No total depletion was found for any of the analyzed radiation types for 10 Gy dose delivery using FLASH.
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Affiliation(s)
- Jeannette Jansen
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Jan Knoll
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Elke Beyreuther
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany
| | - Jörg Pawelke
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiooncology-OncoRay, Dresden, Germany
| | - Raphael Skuza
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Rachel Hanley
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
| | - Stephan Brons
- Heidelberg Ion-Beam Therapy Center (HIT), Heidelberg, Germany
| | - Francesca Pagliari
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joao Seco
- Division of Biomedical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Physics and Astronomy, Ruprecht-Karls-University, Heidelberg, Germany
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Pawelke J, Brand M, Hans S, Hideghéty K, Karsch L, Lessmann E, Löck S, Schürer M, Szabó ER, Beyreuther E. Electron dose rate and oxygen depletion protect zebrafish embryos from radiation damage. Radiother Oncol 2021; 158:7-12. [DOI: 10.1016/j.radonc.2021.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 10/22/2022]
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Suckert T, Beyreuther E, Müller J, Azadegan B, Meinhardt M, Raschke F, Bodenstein E, von Neubeck C, Lühr A, Krause M, Dietrich A. Late Side Effects in Normal Mouse Brain Tissue After Proton Irradiation. Front Oncol 2021; 10:598360. [PMID: 33520710 PMCID: PMC7842140 DOI: 10.3389/fonc.2020.598360] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/16/2020] [Indexed: 12/16/2022] Open
Abstract
Radiation-induced late side effects such as cognitive decline and normal tissue complications can severely affect quality of life and outcome in long-term survivors of brain tumors. Proton therapy offers a favorable depth-dose deposition with the potential to spare tumor-surrounding normal tissue, thus potentially reducing such side effects. In this study, we describe a preclinical model to reveal underlying biological mechanisms caused by precise high-dose proton irradiation of a brain subvolume. We studied the dose- and time-dependent radiation response of mouse brain tissue, using a high-precision image-guided proton irradiation setup for small animals established at the University Proton Therapy Dresden (UPTD). The right hippocampal area of ten C57BL/6 and ten C3H/He mice was irradiated. Both strains contained four groups (nirradiated = 3, ncontrol = 1) treated with increasing doses (0 Gy, 45 Gy, 65 Gy or 85 Gy and 0 Gy, 40 Gy, 60 Gy or 80 Gy, respectively). Follow-up examinations were performed for up to six months, including longitudinal monitoring of general health status and regular contrast-enhanced magnetic resonance imaging (MRI) of mouse brains. These findings were related to comprehensive histological analysis. In all mice of the highest dose group, first symptoms of blood-brain barrier (BBB) damage appeared one week after irradiation, while a dose-dependent delay in onset was observed for lower doses. MRI contrast agent leakage occurred in the irradiated brain areas and was progressive in the higher dose groups. Mouse health status and survival corresponded to the extent of contrast agent leakage. Histological analysis revealed tissue changes such as vessel abnormalities, gliosis, and granule cell dispersion, which also partly affected the non-irradiated contralateral hippocampus in the higher dose groups. All observed effects depended strongly on the prescribed radiation dose and the outcome, i.e. survival, image changes, and tissue alterations, were very consistent within an experimental dose cohort. The derived dose–response model will determine endpoint-specific dose levels for future experiments and may support generating clinical hypotheses on brain toxicity after proton therapy.
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Affiliation(s)
- Theresa Suckert
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Dresden, Germany
| | - Johannes Müller
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Behnam Azadegan
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Department of Physics, Hakim Sabzevari University, Sabzevar, Iran
| | - Matthias Meinhardt
- Neuropathology, Institute of Pathology, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Felix Raschke
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany
| | - Elisabeth Bodenstein
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Cläre von Neubeck
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Department of Particle Therapy, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Armin Lühr
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany.,Department of Medical Physics and Radiotherapy, Faculty of Physics, TU Dortmund University, Dortmund, Germany
| | - Mechthild Krause
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany.,Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Antje Dietrich
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
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Lee KJ, Beyreuther E, Jalil SA, Kim SJ, Eng LM, Guo C, André P. Optical-field driven charge-transfer modulations near composite nanostructures. Nat Commun 2020; 11:6150. [PMID: 33262344 PMCID: PMC7708636 DOI: 10.1038/s41467-020-19423-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 10/13/2020] [Indexed: 11/09/2022] Open
Abstract
Optical activation of material properties illustrates the potentials held by tuning light-matter interactions with impacts ranging from basic science to technological applications. Here, we demonstrate for the first time that composite nanostructures providing nonlocal environments can be engineered to optically trigger photoinduced charge-transfer-dynamic modulations in the solid state. The nanostructures explored herein lead to out-of-phase behavior between charge separation and recombination dynamics, along with linear charge-transfer-dynamic variations with the optical-field intensity. Using transient absorption spectroscopy, up to 270% increase in charge separation rate is obtained in organic semiconductor thin films. We provide evidence that composite nanostructures allow for surface photovoltages to be created, which kinetics vary with the composite architecture and last beyond optical pulse temporal characteristics. Furthermore, by generalizing Marcus theory framework, we explain why charge-transfer-dynamic modulations can only be unveiled when optic-field effects are enhanced by nonlocal image-dipole interactions. Our demonstration, that composite nanostructures can be designed to take advantage of optical fields for tuneable charge-transfer-dynamic remote actuators, opens the path for their use in practical applications ranging from photochemistry to optoelectronics. Controlling and modulating charge transfer dynamics in composite nanostructures, though promising for optoelectronic applications, remains a challenge. Here, the authors report optical control of charge separation and recombination processes in organic semiconductor-based composite nanostructures.
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Affiliation(s)
- Kwang Jin Lee
- The Institute of Optics, University of Rochester, Rochester, New York, USA. .,Department of Physics, Ewha Womans University, Seoul, South Korea. .,CNRS-Ewha International Research Center, Ewha Womans University, Seoul, South Korea.
| | - Elke Beyreuther
- Institut für Angewandte Physik, Technische Universität Dresden, Dresden, Germany
| | - Sohail A Jalil
- The Institute of Optics, University of Rochester, Rochester, New York, USA.,Changchun Institute of Optics, Fine Mechanics, and Physics, Changchun, China
| | | | - Lukas M Eng
- Institut für Angewandte Physik, Technische Universität Dresden, Dresden, Germany
| | - Chunlei Guo
- The Institute of Optics, University of Rochester, Rochester, New York, USA.
| | - Pascal André
- CNRS-Ewha International Research Center, Ewha Womans University, Seoul, South Korea. .,Laboratoire des Multimatériaux et Interfaces, Université Claude Bernard Lyon 1, UMR CNRS 5615, Villeurbanne, France. .,RIKEN, Wako, Japan.
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23
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Brunner S, TŐkÉs TÜ, SzabÓ ER, Polanek RÓ, SzabÓ IZ, Reisz Z, GubÁn BK, SzijÁrtÓ AL, Brand M, Hans S, Karsch L, Lessmann E, Pawelke JÖ, SchÜrer M, Beyreuther E, HideghÉty K. Dose-dependent Changes After Proton and Photon Irradiation in a Zebrafish Model. Anticancer Res 2020; 40:6123-6135. [PMID: 33109550 DOI: 10.21873/anticanres.14633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/17/2020] [Accepted: 09/23/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM The importance of hadron therapy in the cancer management is growing. We aimed to refine the biological effect detection using a vertebrate model. MATERIALS AND METHODS Embryos at 24 and 72 h postfertilization were irradiated at the entrance plateau and the mid spread-out Bragg peak of a 150 MeV proton beam and with reference photons. Radiation-induced DNA double-strand breaks (DSB) and histopathological changes of the eye, muscles and brain were evaluated; deterioration of specific organs (eye, yolk sac, body) was measured. RESULTS More and longer-lasting DSBs occurred in eye and muscle cells due to proton versus photon beams, albeit in different numbers. Edema, necrosis and tissue disorganization, (especially in the eye) were observed. Dose-dependent morphological deteriorations were detected at ≥10 Gy dose levels, with relative biological effectiveness between 0.99±0.07 (length) and 1.12±0.19 (eye). CONCLUSION Quantitative assessment of radiation induced changes in zebrafish embryos proved to be beneficial for the radiobiological characterization of proton beams.
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Affiliation(s)
| | - TÜnde TŐkÉs
- ELI-ALPS, ELI-HU Non-Profit Ltd., Szeged, Hungary
| | | | | | | | - Zita Reisz
- Department of Pathology, University of Szeged, Szeged, Hungary.,Department of Clinical Neuropathology, King's College Hospital, London, U.K
| | | | - AndrÁs Lajos SzijÁrtÓ
- Department of Medical Physics and Informatics, University of Szeged, Szeged, Hungary
| | - Michael Brand
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Leonhard Karsch
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | | | - JÖrg Pawelke
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | | | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Katalin HideghÉty
- ELI-ALPS, ELI-HU Non-Profit Ltd., Szeged, Hungary.,Department of Oncotherapy, University of Szeged, Szeged, Hungary
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24
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Görte J, Beyreuther E, Danen EHJ, Cordes N. Comparative Proton and Photon Irradiation Combined with Pharmacological Inhibitors in 3D Pancreatic Cancer Cultures. Cancers (Basel) 2020; 12:cancers12113216. [PMID: 33142778 PMCID: PMC7692858 DOI: 10.3390/cancers12113216] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 10/23/2020] [Accepted: 10/29/2020] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Due to higher precision and consequent sparing of normal tissue, pancreatic cancer patients might profit from proton beam radiotherapy, a treatment modality increasingly used. Since molecular data upon proton irradiation in comparison to standard photon radiotherapy are limited in pancreatic cancer, the aims of our study were to unravel differences in the effectiveness of photon versus proton irradiation and to exploit radiation type-specific molecular changes for radiosensitizing 3D PDAC cell cultures. Although protons showed a slightly higher effectiveness and a stronger induction of molecular alterations than photons, our results revealed a radiation-type independent sensitization of molecular-targeted agents selected according to the discovered molecular, radiation-induced alterations. Abstract Pancreatic ductal adenocarcinoma (PDAC) is a highly therapy-resistant tumor entity of unmet needs. Over the last decades, radiotherapy has been considered as an additional treatment modality to surgery and chemotherapy. Owing to radiosensitive abdominal organs, high-precision proton beam radiotherapy has been regarded as superior to photon radiotherapy. To further elucidate the potential of combination therapies, we employed a more physiological 3D, matrix-based cell culture model to assess tumoroid formation capacity after photon and proton irradiation. Additionally, we investigated proton- and photon-irradiation-induced phosphoproteomic changes for identifying clinically exploitable targets. Here, we show that proton irradiation elicits a higher efficacy to reduce 3D PDAC tumoroid formation and a greater extent of phosphoproteome alterations compared with photon irradiation. The targeting of proteins identified in the phosphoproteome that were uniquely altered by protons or photons failed to cause radiation-type-specific radiosensitization. Targeting DNA repair proteins associated with non-homologous endjoining, however, revealed a strong radiosensitizing potential independent of the radiation type. In conclusion, our findings suggest proton irradiation to be potentially more effective in PDAC than photons without additional efficacy when combined with DNA repair inhibitors.
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Affiliation(s)
- Josephine Görte
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
| | - Elke Beyreuther
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
| | - Erik H. J. Danen
- Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333CC Leiden, The Netherlands;
| | - Nils Cordes
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus Technische Universität Dresden, 01307 Dresden, Germany; (J.G.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
- German Cancer Consortium, Partner Site Dresden: German Cancer Research Center, 69120 Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Correspondence: ; Tel.: +49-351-458-7401; Fax: +49-351-458-7311
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25
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Brack FE, Kroll F, Gaus L, Bernert C, Beyreuther E, Cowan TE, Karsch L, Kraft S, Kunz-Schughart LA, Lessmann E, Metzkes-Ng J, Obst-Huebl L, Pawelke J, Rehwald M, Schlenvoigt HP, Schramm U, Sobiella M, Szabó ER, Ziegler T, Zeil K. Publisher Correction: Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline. Sci Rep 2020; 10:13403. [PMID: 32753596 PMCID: PMC7403415 DOI: 10.1038/s41598-020-69874-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Florian-Emanuel Brack
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany. .,Technische Universität Dresden, 01062, Dresden, Germany.
| | - Florian Kroll
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
| | - Lennart Gaus
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Constantin Bernert
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Thomas E Cowan
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Stephan Kraft
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
| | - Leoni A Kunz-Schughart
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,National Center for Tumor Diseases (NCT), partner site Dresden, Dresden, Germany
| | | | | | - Lieselotte Obst-Huebl
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Martin Rehwald
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | | | - Ulrich Schramm
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | | | - Emília Rita Szabó
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, Szeged, 6728, Hungary
| | - Tim Ziegler
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
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26
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Suckert T, Rassamegevanon T, Müller J, Dietrich A, Graja A, Reiche M, Löck S, Krause M, Beyreuther E, von Neubeck C. Applying Tissue Slice Culture in Cancer Research-Insights from Preclinical Proton Radiotherapy. Cancers (Basel) 2020; 12:E1589. [PMID: 32560230 PMCID: PMC7352770 DOI: 10.3390/cancers12061589] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/16/2020] [Accepted: 06/09/2020] [Indexed: 12/15/2022] Open
Abstract
A challenge in cancer research is the definition of reproducible, reliable, and practical models, which reflect the effects of complex treatment modalities and the heterogeneous response of patients. Proton beam radiotherapy (PBRT), relative to conventional photon-based radiotherapy, offers the potential for iso-effective tumor control, while protecting the normal tissue surrounding the tumor. However, the effects of PBRT on the tumor microenvironment and the interplay with newly developed chemo- and immunotherapeutic approaches are still open for investigation. This work evaluated thin-cut tumor slice cultures (TSC) of head and neck cancer and organotypic brain slice cultures (OBSC) of adult mice brain, regarding their relevance for translational radiooncology research. TSC and OBSC were treated with PBRT and investigated for cell survival with a lactate dehydrogenase (LDH) assay, DNA repair via the DNA double strand break marker γH2AX, as well as histology with regards to morphology. Adult OBSC failed to be an appropriate model for radiobiological research questions. However, histological analysis of TSC showed DNA damage and tumor morphological results, comparable to known in vivo and in vitro data, making them a promising model to study novel treatment approaches in patient-derived xenografts or primary tumor material.
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Affiliation(s)
- Theresa Suckert
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
| | - Treewut Rassamegevanon
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
| | - Johannes Müller
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
| | - Antje Dietrich
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
| | - Antonia Graja
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
| | - Michael Reiche
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
| | - Steffen Löck
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01309 Dresden, Germany
| | - Mechthild Krause
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- Institute of Radiooncology—OncoRay, Helmholtz-Zentrum Dresden—Rossendorf, 01328 Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, 01307 Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, 01309 Dresden, Germany
| | - Elke Beyreuther
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- Helmholtz-Zentrum Dresden—Rossendorf, Institute of Radiation Physics, 01328 Dresden, Germany
| | - Cläre von Neubeck
- German Cancer Consortium (DKTK), Partner Site Dresden and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (T.R.); (A.D.); (A.G.); (S.L.); (M.K.); (C.v.N.)
- OncoRay—National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden—Rossendorf, 01309 Dresden, Germany; (J.M.); (M.R.); (E.B.)
- Department of Particle Therapy, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
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27
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Brack FE, Kroll F, Gaus L, Bernert C, Beyreuther E, Cowan TE, Karsch L, Kraft S, Kunz-Schughart LA, Lessmann E, Metzkes-Ng J, Obst-Huebl L, Pawelke J, Rehwald M, Schlenvoigt HP, Schramm U, Sobiella M, Szabó ER, Ziegler T, Zeil K. Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline. Sci Rep 2020; 10:9118. [PMID: 32499539 PMCID: PMC7272427 DOI: 10.1038/s41598-020-65775-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 05/11/2020] [Indexed: 01/19/2023] Open
Abstract
Intense laser-driven proton pulses, inherently broadband and highly divergent, pose a challenge to established beamline concepts on the path to application-adapted irradiation field formation, particularly for 3D. Here we experimentally show the successful implementation of a highly efficient (50% transmission) and tuneable dual pulsed solenoid setup to generate a homogeneous (laterally and in depth) volumetric dose distribution (cylindrical volume of 5 mm diameter and depth) at a single pulse dose of 0.7 Gy via multi-energy slice selection from the broad input spectrum. The experiments were conducted at the Petawatt beam of the Dresden Laser Acceleration Source Draco and were aided by a predictive simulation model verified by proton transport studies. With the characterised beamline we investigated manipulation and matching of lateral and depth dose profiles to various desired applications and targets. Using an adapted dose profile, we performed a first proof-of-technical-concept laser-driven proton irradiation of volumetric in-vitro tumour tissue (SAS spheroids) to demonstrate concurrent operation of laser accelerator, beam shaping, dosimetry and irradiation procedure of volumetric biological samples.
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Affiliation(s)
- Florian-Emanuel Brack
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany. .,Technische Universität Dresden, 01062, Dresden, Germany.
| | - Florian Kroll
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
| | - Lennart Gaus
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Constantin Bernert
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Thomas E Cowan
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Stephan Kraft
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
| | - Leoni A Kunz-Schughart
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany.,National Center for Tumor Diseases (NCT), partner site Dresden, Dresden, Germany
| | | | | | - Lieselotte Obst-Huebl
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Martin Rehwald
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | | | - Ulrich Schramm
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | | | - Emília Rita Szabó
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, Szeged, H-6728, Hungary
| | - Tim Ziegler
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany.,Technische Universität Dresden, 01062, Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden - Rossendorf, 01328, Dresden, Germany
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28
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Müller J, Schürer M, Neubert C, Tillner F, Beyreuther E, Suckert T, Peters N, von Neubeck C, Lühr A, Krause M, Bütof R, Dietrich A. Multi-modality bedding platform for combined imaging and irradiation of mice. Biomed Phys Eng Express 2020; 6:037003. [PMID: 33438682 DOI: 10.1088/2057-1976/ab79f1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Preclinical imaging and irradiation yields valuable insights into clinically relevant research topics. While complementary imaging methods such as computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) can be combined within single devices, this is technically demanding and cost-intensive. Similarly, bedding and setup solutions are often specific to certain devices and research questions. We present a bedding platform for mice that is compatible with various preclinical imaging modalities (combined PET/MRI, cone beam CT) and irradiation with photons and protons. It consists of a 3D-printed bedding unit (acrylonitrile butadiene styrene, ABS) holding the animal and features an inhalation anesthesia mask, jaw fixation, ear pins, and immobilization for the hind leg. It can be embedded on mounting adaptors for multi-modal imaging and into a transport box (polymethyl methacrylate, PMMA) for experiments outside dedicated animal facilities while maintaining the animal's hygiene status. A vital support unit provides heating, inhalation anesthesia, and a respiration monitor. We dosimetrically evaluated used materials in order to assess their interaction with incident irradiation. Proof-of-concept multi-modal imaging protocols were used on phantoms and mice. The measured attenuation of the bedding unit for 40/60/80/200 kV X-rays was less than 3%. The measured stopping-power-ratio of ABS was 0.951, the combined water-equivalent thickness of bedding unit and transport box was 4.2 mm for proton energies of 150 MeV and 200 MeV. Proof-of-concept imaging showed no loss of image quality. Imaging data of individual mice from different imaging modalities could be aligned rigidly. The presented bed aims to provide a platform for experiments related to both multi-modal imaging and irradiation, thus offering the possibility for image-guided irradiation which relies on precise imaging and positioning. The usage as a self-contained, stand-alone unit outside dedicated animal facilities represents an advantage over setups designed for specific devices.
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Affiliation(s)
- Johannes Müller
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany. Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Institute of Radiooncology-OncoRay, Germany
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Suckert T, Müller J, Beyreuther E, Azadegan B, Brüggemann A, Bütof R, Dietrich A, Gotz M, Haase R, Schürer M, Tillner F, von Neubeck C, Krause M, Lühr A. High-precision image-guided proton irradiation of mouse brain sub-volumes. Radiother Oncol 2020; 146:205-212. [PMID: 32222488 DOI: 10.1016/j.radonc.2020.02.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 01/31/2020] [Accepted: 02/27/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE Proton radiotherapy offers the potential to reduce normal tissue toxicity. However, clinical safety margins, range uncertainties, and varying relative biological effectiveness (RBE) may result in a critical dose in tumor-surrounding normal tissue. To assess potential adverse effects in preclinical studies, image-guided proton mouse brain irradiation and analysis of DNA damage repair was established. MATERIAL AND METHODS We designed and characterized a setup to shape proton beams with 7 mm range in water and 3 mm in diameter and commissioned a Monte Carlo model for in vivo dose simulation. Cone-beam computed tomography and orthogonal X-ray imaging were used to delineate the right hippocampus and position the mice. The brains of three C3H/HeNRj mice were irradiated with 8 Gy and excised 30 min later. Initial DNA double-strand breaks were visualized by staining brain sections for cell nuclei and γH2AX. Imaged sections were analyzed with an automated and validated processing pipeline to provide a quantitative, spatially resolved radiation damage indicator. RESULTS The analyzed DNA damage pattern clearly visualized the radiation effect in the mouse brains and could be mapped to the simulated dose distribution. The proton beam passed the right hippocampus and stopped in the central brain region for all evaluated mice. CONCLUSION We established image-guided proton irradiation of mouse brains. The clinically oriented workflow facilitates (back-) translational studies. Geometric accuracy, detailed Monte Carlo dose simulations, and cell-based assessment enable a biologically and spatially resolved analysis of radiation response and RBE.
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Affiliation(s)
- Theresa Suckert
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Germany
| | - Johannes Müller
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany
| | - Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute for Radiation Physics, Germany
| | - Behnam Azadegan
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Anja Brüggemann
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Rebecca Bütof
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz Association / Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Germany
| | - Antje Dietrich
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Germany
| | - Malte Gotz
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Robert Haase
- Myers Lab, Max Planck Institute CBG, Dresden, Germany
| | - Michael Schürer
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz Association / Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Germany
| | - Falk Tillner
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Cläre von Neubeck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Germany; Department of Particle Therapy, University Hospital Essen, University of Duisburg-Essen, Germany
| | - Mechthild Krause
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany; Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; Helmholtz Association / Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Germany
| | - Armin Lühr
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany; German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany; Department of Medical Physics, Faculty of Physics, TU Dort-mund University, Germany.
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Dombrowsky AC, Burger K, Porth AK, Stein M, Dierolf M, Günther B, Achterhold K, Gleich B, Feuchtinger A, Bartzsch S, Beyreuther E, Combs SE, Pfeiffer F, Wilkens JJ, Schmid TE. A proof of principle experiment for microbeam radiation therapy at the Munich compact light source. Radiat Environ Biophys 2020; 59:111-120. [PMID: 31655869 DOI: 10.1007/s00411-019-00816-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
Microbeam radiation therapy (MRT), a preclinical form of spatially fractionated radiotherapy, uses an array of microbeams of hard synchrotron X-ray radiation. Recently, compact synchrotron X-ray sources got more attention as they provide essential prerequisites for the translation of MRT into clinics while overcoming the limited access to synchrotron facilities. At the Munich compact light source (MuCLS), one of these novel compact X-ray facilities, a proof of principle experiment was conducted applying MRT to a xenograft tumor mouse model. First, subcutaneous tumors derived from the established squamous carcinoma cell line FaDu were irradiated at a conventional X-ray tube using broadbeam geometry to determine a suitable dose range for the tumor growth delay. For irradiations at the MuCLS, FaDu tumors were irradiated with broadbeam and microbeam irradiation at integral doses of either 3 Gy or 5 Gy and tumor growth delay was measured. Microbeams had a width of 50 µm and a center-to-center distance of 350 µm with peak doses of either 21 Gy or 35 Gy. A dose rate of up to 5 Gy/min was delivered to the tumor. Both doses and modalities delayed the tumor growth compared to a sham-irradiated tumor. The irradiated area and microbeam pattern were verified by staining of the DNA double-strand break marker γH2AX. This study demonstrates for the first time that MRT can be successfully performed in vivo at compact inverse Compton sources.
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Affiliation(s)
- Annique C Dombrowsky
- Institute of Radiation Medicine, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Karin Burger
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- Chair of Biomedical Physics, Department of Physics, Technical University of Munich, 85748, Garching, Germany
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Ann-Kristin Porth
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Marlon Stein
- Institute of Radiation Medicine, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Martin Dierolf
- Chair of Biomedical Physics, Department of Physics, Technical University of Munich, 85748, Garching, Germany
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Benedikt Günther
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Klaus Achterhold
- Chair of Biomedical Physics, Department of Physics, Technical University of Munich, 85748, Garching, Germany
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Bernhard Gleich
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany
| | - Stefan Bartzsch
- Institute of Radiation Medicine, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany
- OncoRay, National Center for Radiation Research in Oncology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany
| | - Stephanie E Combs
- Institute of Radiation Medicine, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- German Consortium for Translational Cancer Research, Deutsches Konsortium für Translationale Krebsforschung (dktk), Technical University Munich, 81675, Munich, Germany
| | - Franz Pfeiffer
- Chair of Biomedical Physics, Department of Physics, Technical University of Munich, 85748, Garching, Germany
- Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
- Department of Diagnostic and Interventional Radiobiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Jan J Wilkens
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- Chair of Biomedical Physics, Department of Physics, Technical University of Munich, 85748, Garching, Germany
| | - Thomas E Schmid
- Institute of Radiation Medicine, Helmholtz Zentrum München GmbH, 85764, Neuherberg, Germany.
- Department of Radiation Oncology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany.
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Karsch L, Beyreuther E, Eger Passos D, Pawelke J, Löck S. Analysing Tumour Growth Delay Data from Animal Irradiation Experiments with Deviations from the Prescribed Dose. Cancers (Basel) 2019; 11:cancers11091281. [PMID: 31480456 PMCID: PMC6769440 DOI: 10.3390/cancers11091281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/21/2019] [Accepted: 08/29/2019] [Indexed: 12/29/2022] Open
Abstract
The development of new radiotherapy technologies is a long-term process, which requires proof of the general concept. However, clinical requirements with respect to beam quality and controlled dose delivery may not yet be fulfilled. Exemplarily, the necessary radiobiological experiments with laser-accelerated electrons are challenged by fluctuating beam intensities. Based on tumour-growth data and dose values obtained in an in vivo trial comparing the biological efficacy of laser-driven and conventional clinical Linac electrons, different statistical approaches for analysis were compared. In addition to the classical averaging per dose point, which excludes animals with high dose deviations, multivariable linear regression, Cox regression and a Monte-Carlo-based approach were tested as alternatives that include all animals in statistical analysis. The four methods were compared based on experimental and simulated data. All applied statistical approaches revealed a comparable radiobiological efficacy of laser-driven and conventional Linac electrons, confirming the experimental conclusion. In the simulation study, significant differences in dose response were detected by all methods except for the conventional method, which showed the lowest power. Thereby, the alternative statistical approaches may allow for reducing the total number of required animals in future pre-clinical trials.
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Affiliation(s)
- Leonhard Karsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, 01328 Dresden, Germany.
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
| | - Elke Beyreuther
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, 01328 Dresden, Germany
| | - Doreen Eger Passos
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, 01328 Dresden, Germany
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Steffen Löck
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, D-01062 Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
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32
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Beyreuther E, Brand M, Hans S, Hideghéty K, Karsch L, Leßmann E, Schürer M, Szabó ER, Pawelke J. Feasibility of proton FLASH effect tested by zebrafish embryo irradiation. Radiother Oncol 2019; 139:46-50. [PMID: 31266652 DOI: 10.1016/j.radonc.2019.06.024] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 06/07/2019] [Accepted: 06/17/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND AND PURPOSE Motivated by first animal trials showing the normal tissue protecting effect of electron and photon Flash irradiation, i.e. at mean dose rates of 100 Gy/s and higher, relative to conventional beam delivery over minutes the feasibility of proton Flash should be assessed. MATERIALS AND METHODS A setup and beam parameter settings for the treatment of zebrafish embryo with proton Flash and proton beams of conventional dose rate were established at the University Proton Therapy Dresden. Zebrafish embryos were treated with graded doses and the differential effect on embryonic survival and the induction of morphological malformations was followed for up to four days after irradiation. RESULTS Beam parameters for the realization of proton Flash were set and tested with respect to controlled dose delivery to biological samples. Analyzing the dose dependent embryonic survival and the rate of spinal curvature as one type of developmental abnormality, no significant influence of proton dose rate was revealed. For the rate of pericardial edema as acute radiation effect, a significant difference (p < 0.05) between proton Flash and protons delivered at conventional dose rate of 5 Gy/min was observed for one dose point only. CONCLUSION The feasibility of Flash proton irradiation was successfully shown, whereas more experiments are required to confirm the presence or absence of a protecting effect and to figure out the limits and requirements for the Flash effect.
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Affiliation(s)
- Elke Beyreuther
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Germany; OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Germany.
| | - Michael Brand
- Center for Molecular and Cellular Bioengeneering (CMCB), DFG-Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Germany
| | - Stefan Hans
- Center for Molecular and Cellular Bioengeneering (CMCB), DFG-Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Germany
| | - Katalin Hideghéty
- Attosecond Light Pulse Source, ELI-HU Nonprofit Ltd., Szeged, Hungary
| | - Leonhard Karsch
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany
| | - Elisabeth Leßmann
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Germany
| | | | - Emília Rita Szabó
- Attosecond Light Pulse Source, ELI-HU Nonprofit Ltd., Szeged, Hungary
| | - Jörg Pawelke
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Germany; Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiooncology - OncoRay, Germany
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Beyreuther E, Grafström S, Eng LM. Designing a Robust Kelvin Probe Setup Optimized for Long-Term Surface Photovoltage Acquisition. Sensors (Basel) 2018; 18:s18114068. [PMID: 30469394 PMCID: PMC6264026 DOI: 10.3390/s18114068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/16/2018] [Accepted: 11/17/2018] [Indexed: 11/16/2022]
Abstract
We introduce a robust low-budget Kelvin probe design that is optimized for the long-term acquisition of surface photovoltage (SPV) data, especially developed for highly resistive systems, which exhibit-in contrast to conventional semiconductors-very slow photoinduced charge relaxation processes in the range of hours and days. The device provides convenient optical access to the sample, as well as high mechanical and electrical stability due to off-resonance operation, showing a noise band as narrow as 1 mV. Furthermore, the acquisition of temperature-dependent SPV transients necessary for SPV-based deep-level transient spectroscopy becomes easily possible. The performance of the instrument is demonstrated by recording long-term SPV transients of the ultra-slowly relaxing model oxide strontium titanate (SrTiO 3 ) over 20 h.
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Affiliation(s)
- Elke Beyreuther
- Institut für Angewandte Physik, Technische Universität Dresden, Nöthnitzer Str. 61, 01187 Dresden, Germany.
| | - Stefan Grafström
- Fakultät Physik, Technische Universität Dresden, Haeckelstr. 3, 01069 Dresden, Germany.
| | - Lukas M Eng
- Institut für Angewandte Physik, Technische Universität Dresden, Nöthnitzer Str. 61, 01187 Dresden, Germany.
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Szabó ER, Brand M, Hans S, Hideghéty K, Karsch L, Lessmann E, Pawelke J, Schürer M, Beyreuther E. Radiobiological effects and proton RBE determined by wildtype zebrafish embryos. PLoS One 2018; 13:e0206879. [PMID: 30408095 PMCID: PMC6224071 DOI: 10.1371/journal.pone.0206879] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/22/2018] [Indexed: 12/16/2022] Open
Abstract
The increasing use of proton radiotherapy during the last decade and the rising number of long-term survivors has given rise to a vital discussion on potential effects on normal tissue. So far, deviations from clinically applied generic RBE (relative biological effectiveness) of 1.1 were only obtained by in vitro studies, whereas indications from in vivo trials and clinical studies are rare. In the present work, wildtype zebrafish embryos (Danio rerio) were used to characterize the effects of plateau and mid-SOBP (spread-out Bragg peak) proton radiation relative to that induced by clinical MV photon beam reference. Based on embryonic survival data, RBE values of 1.13 ± 0.08 and of 1.20 ± 0.04 were determined four days after irradiations with 20 Gy plateau and SOBP protons relative to 6 MV photon beams. These RBE values were confirmed by relating the rates of embryos with morphological abnormalities for the respective radiation qualities and doses. Besides survival, the rate of spine bending, as one type of developmental abnormality, and of pericardial edema, as an example for acute radiation effects, were assessed. The results revealed that independent on radiation quality both rates increased with time approaching almost 100% at the 4th day post irradiation with doses higher than 15 Gy. To sum up, the applicability of the zebrafish embryo as a robust and simple alternative model for in vivo characterization of radiobiological effects in normal tissue was validated and the obtained RBE values are comparable to previous finding in animal trials.
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Affiliation(s)
- Emília Rita Szabó
- Attosecond Light Pulse Source, ELI-HU Nonprofit Ltd., Szeged, Hungary
| | - Michael Brand
- Center for Molecular and Cellular Bioengeneering (CMCB), DFG-Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Stefan Hans
- Center for Molecular and Cellular Bioengeneering (CMCB), DFG-Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Katalin Hideghéty
- Attosecond Light Pulse Source, ELI-HU Nonprofit Ltd., Szeged, Hungary
| | - Leonhard Karsch
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Elisabeth Lessmann
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Michael Schürer
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
- National Center for Tumor Diseases (NCT), partner site Dresden, Germany
| | - Elke Beyreuther
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
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35
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Beyreuther E, Baumann M, Enghardt W, Helmbrecht S, Karsch L, Krause M, Pawelke J, Schreiner L, Schürer M, von Neubeck C, Lühr A. Research Facility for Radiobiological Studies at the University Proton Therapy Dresden. Int J Part Ther 2018; 5:172-182. [PMID: 31773028 DOI: 10.14338/ijpt-18-00008.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 06/12/2018] [Indexed: 11/21/2022] Open
Abstract
Purpose In order to take full advantage of proton radiotherapy, the biological effect of protons in normal and tumor tissue should be investigated and understood in detail. The ongoing discussion on variable relative biological effectiveness along the proton depth dose distribution (eg, Paganetti 2015), and also the administration of concomitant treatments, demands dedicated in vitro trials that prepare the translation into the clinics. Therefore, a setup for radiobiological studies and the corresponding dosimetry should be established that enables in vitro experiments at a horizontal proton beam and a clinical 6 MV photon linear accelerator (Linac) as reference. Methods The experimental proton beam at the University Proton Therapy Dresden is characterized by high beam availability and reliability throughout the day in parallel to patient treatment. For cell irradiation, a homogeneous 10 × 10 cm2 proton field with an optional spread-out Bragg-peak can be formed. A water-filled phantom was installed that allows for precise positioning of different sample geometries along the proton path. Results Depth-dose profiles within the phantom and dose homogeneity over different cell samples were characterized for the proton beam and the photon reference source. A daily quality assurance protocol was implemented that provides absolute dose information required for significant and reproducible in vitro experiments. Cell survival test experiments were performed to demonstrate the feasibility of such experiments. Conclusion In the experimental room of the University Proton Therapy Dresden, clinically relevant conditions for proton in vitro experiments have been realized. The established cell phantom and dosimetry facilitate irradiation in an aqueous environment and are transferable to other proton, photon and ion beam facilities. Precise positioning and easy exchange of cell samples, monitor unit-based dose delivery, and high beam availability allow for systematic in vitro experiments. The close vicinity to the radiotherapy and radiobiology departments provides access to clinical linacs and the interdisciplinary basis for further translational steps.
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Affiliation(s)
- Elke Beyreuther
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Michael Baumann
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,German Cancer Consortium (DKTK), and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Wolfgang Enghardt
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,German Cancer Consortium (DKTK), and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Stephan Helmbrecht
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Leonhard Karsch
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Mechthild Krause
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany.,National Center for Tumor Diseases (NCT), partner site Dresden, Germany
| | - Jörg Pawelke
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Lena Schreiner
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Michael Schürer
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,National Center for Tumor Diseases (NCT), partner site Dresden, Germany
| | - Cläre von Neubeck
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Consortium (DKTK), and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Armin Lühr
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Consortium (DKTK), and German Cancer Research Center (DKFZ), Heidelberg, Germany
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Karsch L, Beyreuther E, Enghardt W, Gotz M, Masood U, Schramm U, Zeil K, Pawelke J. Towards ion beam therapy based on laser plasma accelerators. Acta Oncol 2017; 56:1359-1366. [PMID: 28828925 DOI: 10.1080/0284186x.2017.1355111] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Only few ten radiotherapy facilities worldwide provide ion beams, in spite of their physical advantage of better achievable tumor conformity of the dose compared to conventional photon beams. Since, mainly the large size and high costs hinder their wider spread, great efforts are ongoing to develop more compact ion therapy facilities. One promising approach for smaller facilities is the acceleration of ions on micrometre scale by high intensity lasers. Laser accelerators deliver pulsed beams with a low pulse repetition rate, but a high number of ions per pulse, broad energy spectra and high divergences. A clinical use of a laser based ion beam facility requires not only a laser accelerator providing beams of therapeutic quality, but also new approaches for beam transport, dosimetric control and tumor conformal dose delivery procedure together with the knowledge of the radiobiological effectiveness of laser-driven beams. Over the last decade research was mainly focused on protons and progress was achieved in all important challenges. Although currently the maximum proton energy is not yet high enough for patient irradiation, suggestions and solutions have been reported for compact beam transport and dose delivery procedures, respectively, as well as for precise dosimetric control. Radiobiological in vitro and in vivo studies show no indications of an altered biological effectiveness of laser-driven beams. Laser based facilities will hardly improve the availability of ion beams for patient treatment in the next decade. Nevertheless, there are possibilities for a need of laser based therapy facilities in future.
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Affiliation(s)
- Leonhard Karsch
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | | | - Wolfgang Enghardt
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
| | - Malte Gotz
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Umar Masood
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Ulrich Schramm
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- Technische Universität Dresden, Dresden, Germany
| | - Karl Zeil
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Beyreuther E, Brüchner K, Krause M, Schmidt M, Szabo R, Pawelke J. An optimized small animal tumour model for experimentation with low energy protons. PLoS One 2017; 12:e0177428. [PMID: 28545054 PMCID: PMC5436688 DOI: 10.1371/journal.pone.0177428] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/27/2017] [Indexed: 12/02/2022] Open
Abstract
Background The long-term aim of developing laser based particle acceleration towards clinical application requires not only substantial technological progress, but also the radiobiological characterization of the resulting ultra-short and ultra-intensive particle beam pulses. After comprehensive cell studies a mouse ear tumour model was established allowing for the penetration of low energy protons (~20 MeV) currently available at laser driven accelerators. The model was successfully applied for a first tumour growth delay study with laser driven electrons, whereby the need of improvements crop out. Methods To optimise the mouse ear tumour model with respect to a stable, high take rate and a lower number of secondary tumours, Matrigel was introduced for tumour cell injection. Different concentrations of two human tumour cell lines (FaDu, LN229) and Matrigel were evaluated for stable tumour growth and fulfilling the allocation criteria for irradiation experiments. The originally applied cell injection with PBS was performed for comparison and to assess the long-term stability of the model. Finally, the optimum suspension of cells and Matrigel was applied to determine applicable dose ranges for tumour growth delay studies by 200 kV X-ray irradiation. Results Both human tumour models showed a high take rate and exponential tumour growth starting at a volume of ~10 mm3. As disclosed by immunofluorescence analysis these small tumours already interact with the surrounding tissue and activate endothelial cells to form vessels. The formation of delimited, solid tumours at irradiation size was shown by standard H&E staining and a realistic dose range for inducing tumour growth delay without permanent tumour control was obtained for both tumour entities. Conclusion The already established mouse ear tumour model was successfully upgraded now providing stable tumour growth with high take rate for two tumour entities (HNSCC, glioblastoma) that are of interest for future irradiation experiments at experimental accelerators.
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Affiliation(s)
- Elke Beyreuther
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
- * E-mail:
| | - Kerstin Brüchner
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
- Technische Universität Dresden, Germany
| | - Mechthild Krause
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
- Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
- National Center for Tumor Diseases (NCT), partner site Dresden, Germany
| | - Margret Schmidt
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
- National Center for Tumor Diseases (NCT), partner site Dresden, Germany
| | - Rita Szabo
- Attosecond Light Pulse Source, ELI-HU Nonprofit Ltd., Szeged, Hungary
| | - Jörg Pawelke
- Helmholtz-Zentrum Dresden – Rossendorf, Dresden, Germany
- OncoRay – National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
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Pawelke J, Brüchner K, Krause M, Leßmann E, Schmidt M, Beyreuther E. SP-0169: A small animal tumour model for low-energy laser-accelerated particles. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30612-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Karsch L, Beyreuther E, Enghardt W, Gotz M, Hermannsdörfer T, Krause M, Masood U, Pawelke J, Sauerbrey R, Schramm U, Schürer M, Baumann M. Development of laser-driven proton beam therapy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw392.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Beyreuther E, Gotz M, Karsch L, Lessmann E, Schürer M, Pawelke J. Time structure influence on the radiobiological response to MeV electron beams. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw392.50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Laschinsky L, Karsch L, Leßmann E, Oppelt M, Pawelke J, Richter C, Schürer M, Beyreuther E. Radiobiological influence of megavoltage electron pulses of ultra-high pulse dose rate on normal tissue cells. Radiat Environ Biophys 2016; 55:381-91. [PMID: 27193178 DOI: 10.1007/s00411-016-0652-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 05/09/2016] [Indexed: 05/25/2023]
Abstract
Regarding the long-term goal to develop and establish laser-based particle accelerators for a future radiotherapeutic treatment of cancer, the radiobiological consequences of the characteristic short intense particle pulses with ultra-high peak dose rate, but low repetition rate of laser-driven beams have to be investigated. This work presents in vitro experiments performed at the radiation source ELBE (Electron Linac for beams with high Brilliance and low Emittance). This accelerator delivered 20-MeV electron pulses with ultra-high pulse dose rate of 10(10) Gy/min either at the low pulse frequency analogue to previous cell experiments with laser-driven electrons or at high frequency for minimizing the prolonged dose delivery and to perform comparison irradiation with a quasi-continuous electron beam analogue to a clinically used linear accelerator. The influence of the different electron beam pulse structures on the radiobiological response of the normal tissue cell line 184A1 and two primary fibroblasts was investigated regarding clonogenic survival and the number of DNA double-strand breaks that remain 24 h after irradiation. Thereby, no considerable differences in radiation response were revealed both for biological endpoints and for all probed cell cultures. These results provide evidence that the radiobiological effectiveness of the pulsed electron beams is not affected by the ultra-high pulse dose rates alone.
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Affiliation(s)
- Lydia Laschinsky
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany
- Menarini - Von Heyden GmbH, Leipziger Straße 7 - 13, 01097, Dresden, Germany
| | - Leonhard Karsch
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
| | - Elisabeth Leßmann
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany
| | - Melanie Oppelt
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany
- Quintiles GmbH, Hugenottenallee 167, 63263, Neu-Isenburg, Germany
| | - Jörg Pawelke
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany
| | - Christian Richter
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany
| | - Michael Schürer
- OncoRay - National Centre for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, PF 41, 01307, Dresden, Germany
| | - Elke Beyreuther
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, P.O. Box 510119, 01314, Dresden, Germany.
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Beyreuther E, Karsch L, Laschinsky L, Leßmann E, Naumburger D, Oppelt M, Richter C, Schürer M, Woithe J, Pawelke J. Radiobiological response to ultra-short pulsed megavoltage electron beams of ultra-high pulse dose rate. Int J Radiat Biol 2015; 91:643-52. [PMID: 25968557 DOI: 10.3109/09553002.2015.1043755] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE In line with the long-term aim of establishing the laser-based particle acceleration for future medical application, the radiobiological consequences of the typical ultra-short pulses and ultra-high pulse dose rate can be investigated with electron delivery. MATERIALS AND METHODS The radiation source ELBE (Electron Linac for beams with high Brilliance and low Emittance) was used to mimic the quasi-continuous electron beam of a clinical linear accelerator (LINAC) for comparison with electron pulses at the ultra-high pulse dose rate of 10(10) Gy min(-1) either at the low frequency of a laser accelerator or at 13 MHz avoiding effects of prolonged dose delivery. The impact of pulse structure was analyzed by clonogenic survival assay and by the number of residual DNA double-strand breaks remaining 24 h after irradiation of two human squamous cell carcinoma lines of differing radiosensitivity. RESULTS The radiation response of both cell lines was found to be independent from electron pulse structure for the two endpoints under investigation. CONCLUSIONS The results reveal, that ultra-high pulse dose rates of 10(10) Gy min(-1) and the low repetition rate of laser accelerated electrons have no statistically significant influence (within the 95% confidence intervals) on the radiobiological effectiveness of megavoltage electrons.
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Affiliation(s)
- Elke Beyreuther
- a Helmholtz-Zentrum Dresden - Rossendorf , Bautzner Landstraße 400, Dresden , Germany
| | - Leonhard Karsch
- b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Lydia Laschinsky
- a Helmholtz-Zentrum Dresden - Rossendorf , Bautzner Landstraße 400, Dresden , Germany.,b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Elisabeth Leßmann
- a Helmholtz-Zentrum Dresden - Rossendorf , Bautzner Landstraße 400, Dresden , Germany
| | - Doreen Naumburger
- b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Melanie Oppelt
- b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Christian Richter
- a Helmholtz-Zentrum Dresden - Rossendorf , Bautzner Landstraße 400, Dresden , Germany.,b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany.,c Department of Radiation Oncology , Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany.,d German Cancer Consortium (DKTK), Dresden, Germany and German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Michael Schürer
- b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Julia Woithe
- b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
| | - Jörg Pawelke
- a Helmholtz-Zentrum Dresden - Rossendorf , Bautzner Landstraße 400, Dresden , Germany.,b OncoRay - National Center for Radiation Research in Oncology , Dresden , Germany
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Oppelt M, Baumann M, Bergmann R, Beyreuther E, Brüchner K, Hartmann J, Karsch L, Krause M, Laschinsky L, Leßmann E, Nicolai M, Reuter M, Richter C, Sävert A, Schnell M, Schürer M, Woithe J, Kaluza M, Pawelke J. Comparison study of in vivo dose response to laser-driven versus conventional electron beam. Radiat Environ Biophys 2015; 54:155-166. [PMID: 25600561 DOI: 10.1007/s00411-014-0582-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/20/2014] [Indexed: 06/04/2023]
Abstract
The long-term goal to integrate laser-based particle accelerators into radiotherapy clinics not only requires technological development of high-intensity lasers and new techniques for beam detection and dose delivery, but also characterization of the biological consequences of this new particle beam quality, i.e. ultra-short, ultra-intense pulses. In the present work, we describe successful in vivo experiments with laser-driven electron pulses by utilization of a small tumour model on the mouse ear for the human squamous cell carcinoma model FaDu. The already established in vitro irradiation technology at the laser system JETI was further enhanced for 3D tumour irradiation in vivo in terms of beam transport, beam monitoring, dose delivery and dosimetry in order to precisely apply a prescribed dose to each tumour in full-scale radiobiological experiments. Tumour growth delay was determined after irradiation with doses of 3 and 6 Gy by laser-accelerated electrons. Reference irradiation was performed with continuous electron beams at a clinical linear accelerator in order to both validate the dedicated dosimetry employed for laser-accelerated JETI electrons and above all review the biological results. No significant difference in radiation-induced tumour growth delay was revealed for the two investigated electron beams. These data provide evidence that the ultra-high dose rate generated by laser acceleration does not impact the biological effectiveness of the particles.
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Affiliation(s)
- Melanie Oppelt
- OncoRay - National Center for Radiation Research in Oncology, Technische Universität Dresden, Dresden, Germany,
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Thiessen A, Beyreuther E, Werner R, Kleiner R, Koelle D, Eng LM. Conductivity and magnetoresistance of La0.7Ce0.3MnO(3-δ) thin films under photoexcitation. J Phys Condens Matter 2015; 27:025503. [PMID: 25531984 DOI: 10.1088/0953-8984/27/2/025503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
La0.7Ce0.3MnO3 thin films of different thicknesses, degrees of CeO2-phase segregation and oxygen deficiency, grown on SrTiO3 single crystal substrates, were comparatively investigated with respect to both their spectral and temperature-dependent photoconductivity (PC) and their magnetoresistance (MR) behaviour under photoexcitation. While as-grown films were insensitive to optical excitation, oxygen reduction appeared to be an effective way to decrease the film resistance, but the film thickness was found to play a minor role. However, from the evaluation of the spectral behaviour of the PC and the comparison of the MR of the LCeMO/substrate-samples with a bare substrate under illumination we find that the photoconductivity data reflects not only contributions from (i) photogenerated charge carriers in the film and (ii) carriers injected from the photoconductive substrate (as concluded from earlier works), but also (iii) a decisive parallel photoconduction in the SrTiO3 substrate. Furthermore--also by analyzing the MR characteristics--the unexpected occurence of a strong electroresistive effect in the sample with the highest degree of CeO2 segregation and oxygen deficiency could be attributed to the electroresistance of the SrTiO3 substrate as well. The results suggest a critical reconsideration and possibly a reinterpretation of several previous photoconductivity and electroresistance investigations of manganite thin films on SrTiO3.
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Affiliation(s)
- A Thiessen
- Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany
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Brüchner K, Beyreuther E, Baumann M, Krause M, Oppelt M, Pawelke J. Establishment of a small animal tumour model for in vivo studies with low energy laser accelerated particles. Radiat Oncol 2014; 9:57. [PMID: 24533586 PMCID: PMC3936820 DOI: 10.1186/1748-717x-9-57] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 02/10/2014] [Indexed: 12/12/2022] Open
Abstract
Background The long-term aim of developing a laser based acceleration of protons and ions towards clinical application requires not only substantial technological progress, but also the radiobiological characterization of the resulting ultra-short pulsed particle beams. Recent in vitro data showed similar effects of laser-accelerated versus "conventional" protons on clonogenic cell survival. As the proton energies currently achieved by laser driven acceleration are too low to penetrate standard tumour models on mouse legs, the aim of the present work was to establish a tumour model allowing for the penetration of low energy protons (~ 20 MeV) to further verify their effects in vivo. Methods KHT mouse sarcoma cells were injected subcutaneously in the right ear of NMRI (nu/nu) mice and the growing tumours were characterized with respect to growth parameters, histology and radiation response. In parallel, the laser system JETI was prepared for animal experimentation, i.e. a new irradiation setup was implemented and the laser parameters were carefully adjusted. Finally, a proof-of-principle experiment with laser accelerated electrons was performed to validate the tumour model under realistic conditions, i.e. altered environment and horizontal beam delivery. Results KHT sarcoma on mice ears showed a high take rate and continuous tumour growth after reaching a volume of ~ 5 mm3. The first irradiation experiment using laser accelerated electrons versus 200 kV X-rays was successfully performed and tumour growth delay was evaluated. Comparable tumour growth delay was found between X-ray and laser accelerated electron irradiation. Moreover, experimental influences, like anaesthesia and positioning at JETI, were found to be negligible. Conclusion A small animal tumour model suitable for the irradiation with low energy particles was established and validated at a laser based particle accelerator. Thus, the translation from in vitro to in vivo experimentation was for the first time realized allowing a broader preclinical validation of radiobiological characteristics and efficacy of laser driven particle accelerators in the future.
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Affiliation(s)
- Kerstin Brüchner
- Department of Radiation Oncology, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstr, 74, 01307 Dresden, Germany.
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Thiessen A, Beyreuther E, Grafström S, Dörr K, Werner R, Kleiner R, Koelle D, Eng LM. The Mn(2+)/Mn(3+) state of La0.7Ce0.3MnO3 by oxygen reduction and photodoping. J Phys Condens Matter 2014; 26:045502. [PMID: 24389924 DOI: 10.1088/0953-8984/26/4/045502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Films of cerium-doped LaMnO3, which has been intensively discussed as an electron-doped counterpart to hole-doped mixed-valence lanthanum manganites during the past decade, were analyzed by x-ray photoemission spectroscopy with respect to their manganese valence under photoexcitation. The comparative analysis of the Mn 3s exchange splitting of La0.7Ce0.3MnO3 (LCeMO) films in the dark and under illumination clearly shows that both oxygen reduction and illumination are able to decrease the Mn valence towards a mixed 2+/3+ state, independently of the film thickness and the degree of CeO2 segregation. Charge-injection from the photoconductive SrTiO3 substrate into the Mn eg band with carrier lifetimes in the range of tens of seconds and intrinsic generation of electron-hole pairs within the films are discussed as two possible sources of the Mn valence shift and the subsequent electron doping.
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Affiliation(s)
- A Thiessen
- Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany
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Oppelt M, Baumann M, Beyreuther E, Brüchner K, Karsch L, Krause M, Laschinsky L, Lessmann L, Schürer M, Pawelke J. OC-0170: In vivo dose response studies for laser driven particle beams. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32476-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Laschinsky L, Baumann M, Beyreuther E, Enghardt W, Kaluza M, Karsch L, Lessmann E, Naumburger D, Nicolai M, Richter C, Sauerbrey R, Schlenvoigt HP, Pawelke J. Radiobiological effectiveness of laser accelerated electrons in comparison to electron beams from a conventional linear accelerator. J Radiat Res 2012; 53:395-403. [PMID: 22739009 DOI: 10.1269/jrr.11080] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The notable progress in laser particle acceleration technology promises potential medical application in cancer therapy through compact and cost effective laser devices that are suitable for already existing clinics. Previously, consequences on the radiobiological response by laser driven particle beams characterised by an ultra high peak dose rate have to be investigated. Therefore, tumour and non-malignant cells were irradiated with pulsed laser accelerated electrons at the JETI facility for the comparison with continuous electrons of a conventional therapy LINAC. Dose response curves were measured for the biological endpoints clonogenic survival and residual DNA double strand breaks. The overall results show no significant differences in radiobiological response for in vitro cell experiments between laser accelerated pulsed and clinical used electron beams. These first systematic in vitro cell response studies with precise dosimetry to laser driven electron beams represent a first step toward the long term aim of the application of laser accelerated particles in radiotherapy.
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Affiliation(s)
- Lydia Laschinsky
- OncoRay - National Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, Technische Universität, Dresden, Germany.
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Karsch L, Beyreuther E, Burris-Mog T, Kraft S, Richter C, Zeil K, Pawelke J. Dose rate dependence for different dosimeters and detectors: TLD, OSL, EBT films, and diamond detectors. Med Phys 2012; 39:2447-55. [DOI: 10.1118/1.3700400] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Laschinsky L, Baumann M, Beyreuther E, Burris-Mog T, Cowan T, Enghardt W, Kaluza M, Karsch L, Kraft S, Lessmann E, Metzkes J, Nicolai M, Oppelt M, Richter C, Schlenvoigt H, Schramm U, Schürer M, Zeil K, Pawelke J. 164 TOWARD LASER DRIVEN PROTON THERAPY: RESULTS OF THE BASIC TRANSLATIONAL STEP. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70135-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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