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Dordevic M, Fattori S, Petringa G, Fira AR, Petrovic I, Cuttone G, Cirrone GAP. Computational approaches in the estimation of radiobiological damage for human-malignant cells irradiated with clinical proton and carbon beams. Phys Med 2024; 117:103189. [PMID: 38043325 DOI: 10.1016/j.ejmp.2023.103189] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/26/2023] [Accepted: 11/24/2023] [Indexed: 12/05/2023] Open
Abstract
PURPOSE The use of Monte Carlo (MC) simulations capable of reproducing radiobiological effects of ionising radiation on human cell lines is of great importance, especially for cases involving protons and heavier ion beams. In the latter, huge uncertainties can arise mainly related to the effects of the secondary particles produced in the beam-tissue interaction. This paper reports on a detailed MC study performed using Geant4-based approach on three cancer cell lines, the HTB-177, CRL-5876 and MCF-7, that were previously irradiated with therapeutic proton and carbon ion beams. METHODS A Geant4-based approach used jointly with analytical calculations has been developed to provide a more realistic estimation of the radiobiological damage produced by proton and carbon beams in tissues, reproducing available data obtained from in vitro cell irradiations. The MC "Hadrontherapy" Geant4 application and the Local Effect Model: LEM I, LEM II and LEM III coupled with the different numerical approaches: RapidRusso (RR) and RapidScholz (RS) were used in the study. RESULTS Experimental survival curves are compared with those evaluated using the highlighted Geant4 MC-based approach via chi-square statistical analysis, for the combinations of radiobiological models and numerical approaches, as outlined above. CONCLUSION This study has presented a comparison of the survival data from MC simulations to experimental survival data for three cancer cell lines. An overall best level of agreement was obtained for the HTB-177 cells.
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Affiliation(s)
- Milos Dordevic
- Vinca Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Serena Fattori
- Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali del Sud (LNS), Catania, Italy.
| | - Giada Petringa
- Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali del Sud (LNS), Catania, Italy
| | - Aleksandra Ristic Fira
- Vinca Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ivan Petrovic
- Vinca Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Giacomo Cuttone
- Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali del Sud (LNS), Catania, Italy
| | - G A Pablo Cirrone
- Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali del Sud (LNS), Catania, Italy; Centro Siciliano di Fisica Nucleare e Struttura della Materia, Catania, Italy; Dipartimento di FISICA ED ASTRONOMIA "Ettore Majorana" - Università degli Studi di Catania, Catania, Italy
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de la Fuente-Mendoza JE, Azorín-Vega EP, Mendoza-Nava HJ, Rodríguez-Martínez G, Rodríguez-Dorantes M. Estimation of the relative biological effectiveness (RBE) of the Lu-DOTA-iPSMA177<!--Q1:CorrectlyacknowledgingtheprimaryfundersandgrantIDsofyourresearchisimportanttoensurecompliancewithfunderpolicies.Pleasemakesurethatfundersarementionedaccordingly.--> radiopharmaceutical. Appl Radiat Isot 2023; 202:111065. [PMID: 37879244 DOI: 10.1016/j.apradiso.2023.111065] [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: 02/24/2023] [Revised: 08/28/2023] [Accepted: 10/05/2023] [Indexed: 10/27/2023]
Abstract
Relative biological effectiveness is a radiobiological parameter relevant in radiotherapy planning and useful in evaluating the physiological impact of radiation in different tissues. Targeted radionuclide therapy allows the selective and specific deposition of higher radiation doses in a noninvasive way and without collateral effects through the administration of radiopharmaceuticals. Lu-DOTA-177(hydrazinylnicotinoyl-Lys-(Nal)-NH-CO-NH-Glu) also called Lu-iPSMA177 is a third generation radiopharmaceutical composed by a peptide that recognizes the prostate-specific membrane antigen (PSMA), a membrane protein overexpressed in several types of cancer and that mediates the radiopharmaceutical's recognition of cancer cells. The present study reports radiobiological parameters of Lu-iPSMA177 and demonstrates the superiority of targeted radiopharmaceuticals over external radiotherapy treatment options in terms of their relative biological effectiveness. The relative biological effectiveness value of 1.020±0.003 for the LINAC, estimated by fitting the linear-quadratic model equation to the resulting survival curves, was like those of 1.25±0.04,1.060±0.005and1.00±0.04 obtained by an alternative method in relation to the mean lethal doses at 90, 80 or 60 survival percent respectively. While the relative biological effectiveness values of 5.65±0.13,4.72±0.27and2.87±0.19 estimated for Lu-iPSMA177 were significantly higher than those for the LINAC. The results confirm that the biological effect produced by the deposition of a radiation absorbed dose delivered by the LINAC can be induced with a quarter of that dose using Lu-iPSMA177 due to the energy distribution, dose-rate and energy fluence.
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Petringa G, Romano F, Manti L, Pandola L, Attili A, Cammarata F, Cuttone G, Forte G, Manganaro L, Pipek J, Pisciotta P, Russo G, Cirrone GAP. Radiobiological quantities in proton-therapy: Estimation and validation using Geant4-based Monte Carlo simulations. Phys Med 2019; 58:72-80. [PMID: 30824153 DOI: 10.1016/j.ejmp.2019.01.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 01/30/2019] [Accepted: 01/30/2019] [Indexed: 12/11/2022] Open
Abstract
PURPOSE The Geant4 Monte Carlo simulation toolkit was used to reproduce radiobiological parameters measured by irradiating three different cancerous cell lines with monochromatic and clinical proton beams. METHODS The experimental set-up adopted for irradiations was fully simulated with a dedicated open-source Geant4 application. Cells survival fractions was calculated coupling the Geant4 simulations with two analytical radiobiological models: one based on the LEM (Local Effect Model) approach and the other on a semi-empirical parameterisation. Results was evaluated and compared with experimental data. RESULTS AND CONCLUSIONS The results demonstrated the Geant4 ability to reproduce radiobiological quantities for different cell lines.
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Affiliation(s)
- G Petringa
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; Dipartimento di Fisica e Astronomia, Universitá degli Studi di Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - F Romano
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; National Physical Laboratory, Acoustic and Ionizing Radiation Division, Teddington TW11 0LW, Middlesex, UK
| | - L Manti
- Dipartimento di Fisica E. Pancini, Universitá degli Studi Federico II di Napoli, Via Cinthia, I-80126 Napoli, Italy; INFN-NA, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di M. S. Angelo, Via Cintia, I-80126 Napoli, Italy
| | - L Pandola
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy
| | - A Attili
- INFN-TO, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Torino, Italy
| | - F Cammarata
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; IBFM-CNR, Institute of Molecular Bioimaging and Physiology - National Research Council, Cefalù, PA, Italy
| | - G Cuttone
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy
| | - G Forte
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; IBFM-CNR, Institute of Molecular Bioimaging and Physiology - National Research Council, Cefalù, PA, Italy
| | - L Manganaro
- INFN-TO, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Torino, Italy
| | - J Pipek
- ELI-Beamline Project, Inst. Physics, ASCR, PALS Center, Prague, Czech Republic
| | - P Pisciotta
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; Dipartimento di Fisica e Astronomia, Universitá degli Studi di Catania, Via S. Sofia 64, 95123 Catania, Italy
| | - G Russo
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; IBFM-CNR, Institute of Molecular Bioimaging and Physiology - National Research Council, Cefalù, PA, Italy
| | - G A P Cirrone
- INFN-LNS. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123 Catania, Italy; ELI-Beamline Project, Inst. Physics, ASCR, PALS Center, Prague, Czech Republic.
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Marzec J, Marzec L, Martus P, Zips D, Müller AC. MATLAB®-based fitting method to evaluate survival fractions after multimodal treatment. Clin Transl Radiat Oncol 2018; 10:36-41. [PMID: 29928704 PMCID: PMC6008626 DOI: 10.1016/j.ctro.2018.03.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 03/27/2018] [Indexed: 12/25/2022] Open
Abstract
To easily analyse and visualize cell kill dynamics measured by survival fraction after single or combined treatments a MATLAB®-based application was developed. A statistical analysis with different options of visualisation of single and combined treatment effects can be performed in a few steps not requiring advanced knowledge of statistical programs.
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Affiliation(s)
- Jolanta Marzec
- Department of Radiation Oncology, Eberhard Karls University, Hoppe-Seyler-Strasse 3, 76072 Tübingen, Germany
| | - Lukasz Marzec
- Zentrum für Datenverarbeitung, Eberhard Karls University, Wächterstraße 76, 72074 Tübingen, Germany
| | - Peter Martus
- Institute for Clinical Epidemiology and Applied Biometry, Eberhard Karls University, Silcherstraße 5, 72076 Tübingen, Germany
| | - Daniel Zips
- Department of Radiation Oncology, Eberhard Karls University, Hoppe-Seyler-Strasse 3, 76072 Tübingen, Germany
| | - Arndt-Christian Müller
- Department of Radiation Oncology, Eberhard Karls University, Hoppe-Seyler-Strasse 3, 76072 Tübingen, Germany
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Zhao J, Guo Z, Pei S, Song L, Wang C, Ma J, Jin L, Ma Y, He R, Zhong J, Ma Y, Zhang H. pATM and γH2AX are effective radiation biomarkers in assessing the radiosensitivity of 12C 6+ in human tumor cells. Cancer Cell Int 2017; 17:49. [PMID: 28450809 PMCID: PMC5405484 DOI: 10.1186/s12935-017-0419-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 01/04/2017] [Accepted: 04/20/2017] [Indexed: 12/17/2022] Open
Abstract
Background Tumour radiosensitivity would be particularly useful in optimizing the radiation dose during radiotherapy. The aim of the current study was to evaluate the potential value of phosphorylated H2AX (γH2AX) and ATM (pATM) in assessing 12C6+ radiosensitivity of tumour cells. Methods Human cervical carcinoma HeLa cells, hepatoma HepG2 cells, and mucoepidermoid carcinoma MEC-1 cells were irradiated with different doses of 12C6+. The survival fraction was assayed with clonogenic survival method and the foci of γH2AX and pATM was visualized using immunocytochemical methods. Flow cytometry was used to assay γH2AX, pATM and the cell cycle. Results The survival fraction decreased immediately in dose-dependent manner, but in turn, significantly increased during 24 h after 12C6+ irradiation. Both γH2AX and pATM foci accumulated linearly with doses and with a maximum induction at 0.5 h for γH2AX and 0.5 or 4 h for pATM, respectively, and a fraction foci kept for 24 h. The expression of γH2AX and pATM was in relation to cell cycle. The G0/G1 phase cells had the highest expression of γH2AX after 0.5 h irradiation and then decreased to a lower level at 24 h after irradiation. An obvious increase of pATM in G2/M phase was shown after 24 h of 2 and 4 Gy irradiation. The significant G2/M phase arrest was shown. There was a close relationship between the clonogenic survival and γH2AX and pATM expression both in timing and dose in response to 12C6+. Conclusions The rate of γH2AX and pATM formation and loss may be an important factor in the response of cells to 12C6+. pATM and γH2AX are effective radiation biomarkers in assessing the radiosensitivity of 12C6+ in human tumor cells.
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Affiliation(s)
- Jin Zhao
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Zhong Guo
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Shuyan Pei
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Lei Song
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Chenjing Wang
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Jianxiu Ma
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Long Jin
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Yanqing Ma
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Renke He
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Jianbin Zhong
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Ying Ma
- Medical College of Northwest Minzu University, Lanzhou, 730030 People's Republic of China
| | - Hong Zhang
- Department of Radiation Medicine, Institute of Modern Physics, Chinese Academy of Science, Lanzhou, 730030 People's Republic of China
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Wu Y, Yin G. Multiple imputation for cure rate quantile regression with censored data. Biometrics 2016; 73:94-103. [PMID: 27479513 DOI: 10.1111/biom.12574] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 06/01/2016] [Accepted: 06/01/2016] [Indexed: 11/30/2022]
Abstract
The main challenge in the context of cure rate analysis is that one never knows whether censored subjects are cured or uncured, or whether they are susceptible or insusceptible to the event of interest. Considering the susceptible indicator as missing data, we propose a multiple imputation approach to cure rate quantile regression for censored data with a survival fraction. We develop an iterative algorithm to estimate the conditionally uncured probability for each subject. By utilizing this estimated probability and Bernoulli sample imputation, we can classify each subject as cured or uncured, and then employ the locally weighted method to estimate the quantile regression coefficients with only the uncured subjects. Repeating the imputation procedure multiple times and taking an average over the resultant estimators, we obtain consistent estimators for the quantile regression coefficients. Our approach relaxes the usual global linearity assumption, so that we can apply quantile regression to any particular quantile of interest. We establish asymptotic properties for the proposed estimators, including both consistency and asymptotic normality. We conduct simulation studies to assess the finite-sample performance of the proposed multiple imputation method and apply it to a lung cancer study as an illustration.
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Affiliation(s)
- Yuanshan Wu
- School of Mathematics and Statistics, Wuhan University, Wuhan, Hubei 430072, China
| | - Guosheng Yin
- Department of Statistics and Actuarial Science, University of Hong Kong, Pokfulam Road, Hong Kong
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Abstract
Background The origin of the reduction in thyroid uptake after a low activity iodine scan, so-called stunning effect, is still controversial. Two explanations prevail: an individual cell stunning that reduces its capability to store iodine without altering its viability, and/or a significant cell-killing fraction that reduces the number of cells in the tissue still taking up iodine. Our aim is to analyze whether this last assumption could explain the observed reduction. Methods The survival fraction after administration of a small radioiodine activity was computed by two independent methods: the application of the statistical theory underlying tissue control probability on recent clinical studies of thyroid remnant 131I ablation and the use of the radiosensitivities reported in human thyroid cell assays for different radioiodine isotopes. Results Both methods provided survival fractions in line with the uptake reduction observed after a low 131I activity scan. The second method also predicts a similar behavior after a low 123I or 124I activity scan. Conclusions This study shows that the cell-killing fraction is sufficient to explain the uptake reduction effect for 131I and 123I after a low activity scan and that even if some still living cells express a stunning effect just after irradiation (as shown in vitro), they will mostly die with time. As the β/α value is very low, this therapy fractionation should not impact the patient outcome in agreement with recent studies. However, in case of huge uptake heterogeneity, pre-therapy scan could specifically kills high-uptake cells and by the way could reduce the cross irradiation to the low-uptake cells during the therapy, resulting in a reduction of the ablation success rate. Electronic supplementary material The online version of this article (doi:10.1186/s13550-015-0144-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stephan Walrand
- Nuclear medicine, Molecular Imaging, Radiotherapy and Oncology Unit (MIRO), IECR, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium.
| | - Michel Hesse
- Nuclear medicine, Molecular Imaging, Radiotherapy and Oncology Unit (MIRO), IECR, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
| | - François Jamar
- Nuclear medicine, Molecular Imaging, Radiotherapy and Oncology Unit (MIRO), IECR, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
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