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Votta C, Wang JY, Cavallini N, Savorani F, Capparotto A, Liew KX, Giovannetti M, Lanfranco L, Al-Babili S, Fiorilli V. Integration of rice apocarotenoid profile and expression pattern of Carotenoid Cleavage Dioxygenases reveals a positive effect of β-ionone on mycorrhization. Plant Physiol Biochem 2024; 207:108366. [PMID: 38244387 DOI: 10.1016/j.plaphy.2024.108366] [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] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/22/2024]
Abstract
Carotenoids are susceptible to degrading processes initiated by oxidative cleavage reactions mediated by Carotenoid Cleavage Dioxygenases that break their backbone, leading to products called apocarotenoids. These carotenoid-derived metabolites include the phytohormones abscisic acid and strigolactones, and different signaling molecules and growth regulators, which are utilized by plants to coordinate many aspects of their life. Several apocarotenoids have been recruited for the communication between plants and arbuscular mycorrhizal (AM) fungi and as regulators of the establishment of AM symbiosis. However, our knowledge on their biosynthetic pathways and the regulation of their pattern during AM symbiosis is still limited. In this study, we generated a qualitative and quantitative profile of apocarotenoids in roots and shoots of rice plants exposed to high/low phosphate concentrations, and upon AM symbiosis in a time course experiment covering different stages of growth and AM development. To get deeper insights in the biology of apocarotenoids during this plant-fungal symbiosis, we complemented the metabolic profiles by determining the expression pattern of CCD genes, taking advantage of chemometric tools. This analysis revealed the specific profiles of CCD genes and apocarotenoids across different stages of AM symbiosis and phosphate supply conditions, identifying novel reliable markers at both local and systemic levels and indicating a promoting role of β-ionone in AM symbiosis establishment.
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Affiliation(s)
- Cristina Votta
- Department of Life Sciences and Systems Biology, University of Torino, Viale Mattioli 25, Torino, 10125, Italy
| | - Jian You Wang
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Nicola Cavallini
- Department of Applied Science and Technology (DISAT), Polytechnic of Turin, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
| | - Francesco Savorani
- Department of Applied Science and Technology (DISAT), Polytechnic of Turin, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
| | - Arianna Capparotto
- Department of Biology, University of Padova, Via Ugo Bassi 58/b, 35131, Padova, Italy
| | - Kit Xi Liew
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Marco Giovannetti
- Department of Life Sciences and Systems Biology, University of Torino, Viale Mattioli 25, Torino, 10125, Italy; Department of Biology, University of Padova, Via Ugo Bassi 58/b, 35131, Padova, Italy
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Torino, Viale Mattioli 25, Torino, 10125, Italy
| | - Salim Al-Babili
- The BioActives Lab, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia; The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Torino, Viale Mattioli 25, Torino, 10125, Italy.
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Chen GTE, Wang JY, Votta C, Braguy J, Jamil M, Kirschner GK, Fiorilli V, Berqdar L, Balakrishna A, Blilou I, Lanfranco L, Al-Babili S. Disruption of the rice 4-DEOXYOROBANCHOL HYDROXYLASE unravels specific functions of canonical strigolactones. Proc Natl Acad Sci U S A 2023; 120:e2306263120. [PMID: 37819983 PMCID: PMC10589652 DOI: 10.1073/pnas.2306263120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 04/18/2023] [Accepted: 09/11/2023] [Indexed: 10/13/2023] Open
Abstract
Strigolactones (SLs) regulate many developmental processes, including shoot-branching/tillering, and mediate rhizospheric interactions. SLs originate from carlactone (CL) and are structurally diverse, divided into a canonical and a noncanonical subfamily. Rice contains two canonical SLs, 4-deoxyorobanchol (4DO) and orobanchol (Oro), which are common in different plant species. The cytochrome P450 OsMAX1-900 forms 4DO from CL through repeated oxygenation and ring closure, while the homologous enzyme OsMAX1-1400 hydroxylates 4DO into Oro. To better understand the biological function of 4DO and Oro, we generated CRISPR/Cas9 mutants disrupted in OsMAX1-1400 or in both OsMAX1-900 and OsMAX1-1400. The loss of OsMAX1-1400 activity led to a complete lack of Oro and an accumulation of its precursor 4DO. Moreover, Os1400 mutants showed shorter plant height, panicle and panicle base length, but no tillering phenotype. Hormone quantification and transcriptome analysis of Os1400 mutants revealed elevated auxin levels and changes in the expression of auxin-related, as well as of SL biosynthetic genes. Interestingly, the Os900/1400 double mutant lacking both Oro and 4DO did not show the observed Os1400 architectural phenotypes, indicating their being a result of 4DO accumulation. Treatment of wild-type plants with 4DO confirmed this assumption. A comparison of the Striga seed germinating activity and the mycorrhization of Os900, Os900/1400, and Os1400 loss-of-function mutants demonstrated that the germination activity positively correlates with 4DO content while disrupting OsMAX1-1400 has a negative impact on mycorrhizal symbiosis. Taken together, our paper deciphers the biological function of canonical SLs in rice and reveals their particular contributions to establishing architecture and rhizospheric communications.
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Affiliation(s)
- Guan-Ting Erica Chen
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
- The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Jian You Wang
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Cristina Votta
- Department of Life Sciences and Systems Biology, University of Torino, Torino10125, Italy
| | - Justine Braguy
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Muhammad Jamil
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Gwendolyn K. Kirschner
- Biological and Environmental Science and Engineering (BESE) Division, Plant Cell and Developmental Biology, King Abdullah University of Science and Technology, Thuwal23955-6900, Saudi Arabia
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Torino, Torino10125, Italy
| | - Lamis Berqdar
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Aparna Balakrishna
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Ikram Blilou
- The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
- Biological and Environmental Science and Engineering (BESE) Division, Plant Cell and Developmental Biology, King Abdullah University of Science and Technology, Thuwal23955-6900, Saudi Arabia
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Torino, Torino10125, Italy
| | - Salim Al-Babili
- The BioActives Lab, Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
- The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal23955-6900, Kingdom of Saudi Arabia
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3
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Chiesa S, Russo R, Beghella Bartoli F, Palumbo I, Sabatino G, Cannatà MC, Gigli R, Longo S, Tran HE, Boldrini L, Dinapoli N, Votta C, Cusumano D, Pignotti F, Lupattelli M, Camilli F, Della Pepa GM, D’Alessandris GQ, Olivi A, Balducci M, Colosimo C, Gambacorta MA, Valentini V, Aristei C, Gaudino S. MRI-derived radiomics to guide post-operative management of glioblastoma: Implication for personalized radiation treatment volume delineation. Front Med (Lausanne) 2023; 10:1059712. [PMID: 36744131 PMCID: PMC9892450 DOI: 10.3389/fmed.2023.1059712] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/03/2023] [Indexed: 01/20/2023] Open
Abstract
Background The glioblastoma's bad prognosis is primarily due to intra-tumor heterogeneity, demonstrated from several studies that collected molecular biology, cytogenetic data and more recently radiomic features for a better prognostic stratification. The GLIFA project (GLIoblastoma Feature Analysis) is a multicentric project planned to investigate the role of radiomic analysis in GB management, to verify if radiomic features in the tissue around the resection cavity may guide the radiation target volume delineation. Materials and methods We retrospectively analyze from three centers radiomic features extracted from 90 patients with total or near total resection, who completed the standard adjuvant treatment and for whom we had post-operative images available for features extraction. The Manual segmentation was performed on post gadolinium T1w MRI sequence by 2 radiation oncologists and reviewed by a neuroradiologist, both with at least 10 years of experience. The Regions of interest (ROI) considered for the analysis were: the surgical cavity ± post-surgical residual mass (CTV_cavity); the CTV a margin of 1.5 cm added to CTV_cavity and the volume resulting from subtracting the CTV_cavity from the CTV was defined as CTV_Ring. Radiomic analysis and modeling were conducted in RStudio. Z-score normalization was applied to each radiomic feature. A radiomic model was generated using features extracted from the Ring to perform a binary classification and predict the PFS at 6 months. A 3-fold cross-validation repeated five times was implemented for internal validation of the model. Results Two-hundred and seventy ROIs were contoured. The proposed radiomic model was given by the best fitting logistic regression model, and included the following 3 features: F_cm_merged.contrast, F_cm_merged.info.corr.2, F_rlm_merged.rlnu. A good agreement between model predicted probabilities and observed outcome probabilities was obtained (p-value of 0.49 by Hosmer and Lemeshow statistical test). The ROC curve of the model reported an AUC of 0.78 (95% CI: 0.68-0.88). Conclusion This is the first hypothesis-generating study which applies a radiomic analysis focusing on healthy tissue ring around the surgical cavity on post-operative MRI. This study provides a preliminary model for a decision support tool for a customization of the radiation target volume in GB patients in order to achieve a margin reduction strategy.
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Affiliation(s)
- S. Chiesa
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - R. Russo
- Department of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Institute of Radiology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - F. Beghella Bartoli
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - I. Palumbo
- Radiation Oncology Section, University of Perugia, Perugia, Italy,Perugia General Hospital, Perugia, Italy
| | - G. Sabatino
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy,Department of Neurosurgery, Agostino Gemelli University Polyclinic (IRCCS), Rome, Italy
| | - M. C. Cannatà
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy,*Correspondence: M. C. Cannatà,
| | - R. Gigli
- Medical Physics, Mater Olbia Hospital, Olbia, Italy
| | - S. Longo
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - H. E. Tran
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - L. Boldrini
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - N. Dinapoli
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - C. Votta
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - D. Cusumano
- Medical Physics, Mater Olbia Hospital, Olbia, Italy
| | - F. Pignotti
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy,Department of Neurosurgery, Agostino Gemelli University Polyclinic (IRCCS), Rome, Italy
| | | | - F. Camilli
- Radiation Oncology Section, University of Perugia, Perugia, Italy
| | - G. M. Della Pepa
- Department of Neurosurgery, Agostino Gemelli University Polyclinic (IRCCS), Rome, Italy
| | - G. Q. D’Alessandris
- Department of Neurosurgery, Agostino Gemelli University Polyclinic (IRCCS), Rome, Italy
| | - A. Olivi
- Department of Neurosurgery, Agostino Gemelli University Polyclinic (IRCCS), Rome, Italy
| | - M. Balducci
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - C. Colosimo
- Department of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Institute of Radiology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - M. A. Gambacorta
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - V. Valentini
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
| | - C. Aristei
- Radiation Oncology Section, University of Perugia, Perugia, Italy,Perugia General Hospital, Perugia, Italy
| | - S. Gaudino
- Department of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Institute of Radiology, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Rome, Italy
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4
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Ablazov A, Votta C, Fiorilli V, Wang JY, Aljedaani F, Jamil M, Balakrishna A, Balestrini R, Liew KX, Rajan C, Berqdar L, Blilou I, Lanfranco L, Al-Babili S. ZAXINONE SYNTHASE 2 regulates growth and arbuscular mycorrhizal symbiosis in rice. Plant Physiol 2023; 191:382-399. [PMID: 36222582 PMCID: PMC9806602 DOI: 10.1093/plphys/kiac472] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/09/2022] [Indexed: 05/24/2023]
Abstract
Carotenoid cleavage, catalyzed by CAROTENOID CLEAVAGE DIOXYGENASEs (CCDs), provides signaling molecules and precursors of plant hormones. Recently, we showed that zaxinone, a apocarotenoid metabolite formed by the CCD ZAXINONE SYNTHASE (ZAS), is a growth regulator required for normal rice (Oryza sativa) growth and development. The rice genome encodes three OsZAS homologs, called here OsZAS1b, OsZAS1c, and OsZAS2, with unknown functions. Here, we investigated the enzymatic activity, expression pattern, and subcellular localization of OsZAS2 and generated and characterized loss-of-function CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats and associated protein 9)-Oszas2 mutants. We show that OsZAS2 formed zaxinone in vitro. OsZAS2 was predominantly localized in plastids and mainly expressed under phosphate starvation. Moreover, OsZAS2 expression increased during mycorrhization, specifically in arbuscule-containing cells. Oszas2 mutants contained lower zaxinone content in roots and exhibited reduced root and shoot biomass, fewer tillers, and higher strigolactone (SL) levels. Exogenous zaxinone application repressed SL biosynthesis and partially rescued the growth retardation of the Oszas2 mutant. Consistent with the OsZAS2 expression pattern, Oszas2 mutants displayed a lower frequency of arbuscular mycorrhizal colonization. In conclusion, OsZAS2 is a zaxinone-forming enzyme that, similar to the previously reported OsZAS, determines rice growth, architecture, and SL content, and is required for optimal mycorrhization.
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Affiliation(s)
| | | | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Torino, Torino 10125, Italy
| | - Jian You Wang
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Fatimah Aljedaani
- The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Plant Cell and Developmental Biology, Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Muhammad Jamil
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Aparna Balakrishna
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Raffaella Balestrini
- National Research Council, Institute for Sustainable Plant Protection, Turin 10135, Italy
| | - Kit Xi Liew
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Chakravarthy Rajan
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Lamis Berqdar
- Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture (CDA), King Abdullah University of Science and Technology (KAUST), The BioActives Lab, Thuwal, 23955-15 6900, Saudi Arabia
| | - Ikram Blilou
- The Plant Science Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Plant Cell and Developmental Biology, Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Torino, Torino 10125, Italy
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5
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Cannatà M, Russo R, Beghella Bartoli F, Palumbo I, Tran H, Votta C, Lupattelli M, Boldrini L, Dinapoli N, Camilli F, Balducci M, Gambacorta M, Valentini V, Aristei C, Sabatino G, Pignotti F, Gaudino S, Chiesa S. P02.11.B An hypothesis generating study of MRI-Derived Radiomics on tumor and microenvironment tissue heterogeneity to guide post-operative management of glioblastoma: toward personalized radiation treatment volume delineation. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.104] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The glioblastoma’s bad prognosis is primarily due to intra-tumor heterogeneity, demonstrated from several studies that collected molecular biology, cytogenetic data and more recently radiomic features for a better prognostic stratification.The GLIFA project (GLIoblastoma Feature Analysis) is a multicentric project planned to investigated the role of radiomic analysis in GBM management, to verify if radiomic features in the tissue around the resection cavity which may guide the radiation target volume delineation.
Material and Methods
We retrospectively analyze from three centers radiomic features extracted from 90 patients with total or near total resection, who completed the standard adjuvant treatment and for whom we had post-operative images available for features extraction.The Manual segmentation was performed on post gadolinium T1w MRI sequence by 2 radiation oncologist reviewed by a neuroradiologist, both with at least 10 years of experience. The Region of interest (ROI) considered for the analysis were: the surgical cavity +/- post-surgical residual mass (CTV_cavity); the CTV a margin of 1.5 cm added to CTV_cavity and the volume resulting from subtracting the CTV_cavity from the CTV was defined as CTV_Ring. Radiomic analysis and modelling were conducted in RStudio. Z-score normalization was applied to each radiomic feature. A radiomic model was generated using the 226 features extracted from the Ring to perform a binary classification and predict the PFS at 6 months (statistical, morphological and textural features). A 3-fold cross-validation repeated five times was implemented for internal validation of the model.
Results
Two-hundred and seventy ROIs were contoured. The proposed radiomic model was given by the best fitting logistic regression model, and included the following 3 features: F_cm_merged.contrast, F_cm_merged.info.corr.2, F_rlm_merged.rlnu. A good agreement between model predicted probabilities and observed outcome probabilities was obtained (p-value of 0.49 by Hosmer and Lemeshow statistical test). The ROC curve of the model reported an AUC of 0.78 (95% CI: 0.68 - 0.88).
Conclusion
This is the first hypothesis-generating study who applies a radiomic analysis focusing on healthy tissue ring around the surgical cavity on post-operative MRI. This study provides a preliminary model for a decision support tool for a customization of the radiation target volume in GBM patients in order to achieve a margin reduction strategy.
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Affiliation(s)
- M Cannatà
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS and Università Cattolica del Sacro Cuore , Roma , Italy
| | - R Russo
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Neuroradiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS and Università Cattolica del Sacro Cuore , Roma , Italy
| | - F Beghella Bartoli
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - I Palumbo
- Radiation Oncology Section, General Hospital , Perugia , Italy
| | - H Tran
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - C Votta
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - M Lupattelli
- Radiation Oncology Section, General Hospital , Perugia , Italy
| | - L Boldrini
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - N Dinapoli
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - F Camilli
- Radiation Oncology Section, General Hospital , Perugia , Italy
| | - M Balducci
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - M Gambacorta
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - V Valentini
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
| | - C Aristei
- Radiation Oncology Section, General Hospital , Perugia , Italy
| | - G Sabatino
- Radiation Oncology, Mater Olbia Hospital , 07026, Olbia , Italy
| | - F Pignotti
- Department of Neurosurgery, Mater Olbia Hospital , Olbia , Italy
| | - S Gaudino
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Neuroradiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS and Università Cattolica del Sacro Cuore , Roma , Italy
| | - S Chiesa
- Department of Diagnostic Imaging, Oncological Radiotherapy, and Hematology, UOC Oncological Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS , Roma , Italy
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6
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Votta C, Fiorilli V, Haider I, Wang JY, Balestrini R, Petřík I, Tarkowská D, Novák O, Serikbayeva A, Bonfante P, Al‐Babili S, Lanfranco L. Zaxinone synthase controls arbuscular mycorrhizal colonization level in rice. Plant J 2022; 111:1688-1700. [PMID: 35877598 PMCID: PMC9543690 DOI: 10.1111/tpj.15917] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 07/05/2022] [Accepted: 07/21/2022] [Indexed: 05/12/2023]
Abstract
The Oryza sativa (rice) carotenoid cleavage dioxygenase OsZAS was described to produce zaxinone, a plant growth-promoting apocarotenoid. A zas mutant line showed reduced arbuscular mycorrhizal (AM) colonization, but the mechanisms underlying this behavior are unknown. Here, we investigated how OsZAS and exogenous zaxinone treatment regulate mycorrhization. Micromolar exogenous supply of zaxinone rescued root growth but not the mycorrhizal defects of the zas mutant, and even reduced mycorrhization in wild-type and zas genotypes. The zas line did not display the increase in the level of strigolactones (SLs) that was observed in wild-type plants at 7 days post-inoculation with AM fungus. Moreover, exogenous treatment with the synthetic SL analog GR24 rescued the zas mutant mycorrhizal phenotype, indicating that the lower AM colonization rate of zas is caused by a deficiency in SLs at the early stages of the interaction, and indicating that during this phase OsZAS activity is required to induce SL production, possibly mediated by the Dwarf14-Like (D14L) signaling pathway. OsZAS is expressed in arbuscule-containing cells, and OsPT11prom::OsZAS transgenic lines, where OsZAS expression is driven by the OsPT11 promoter active in arbusculated cells, exhibit increased mycorrhization compared with the wild type. Overall, our results show that the genetic manipulation of OsZAS activity in planta leads to a different effect on AM symbiosis from that of exogenous zaxinone treatment, and demonstrate that OsZAS influences the extent of AM colonization, acting as a component of a regulatory network that involves SLs.
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Affiliation(s)
- Cristina Votta
- Department of Life Sciences and Systems BiologyUniversity of TurinTurin10125Italy
| | - Valentina Fiorilli
- Department of Life Sciences and Systems BiologyUniversity of TurinTurin10125Italy
| | - Imran Haider
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE)King Abdullah University of Science and TechnologyThuwal23955Saudi Arabia
| | - Jian You Wang
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE)King Abdullah University of Science and TechnologyThuwal23955Saudi Arabia
| | - Raffaella Balestrini
- National Research CouncilInstitute for Sustainable Plant ProtectionTurin10135Italy
| | - Ivan Petřík
- Laboratory of Growth Regulators, Faculty of SciencePalacký University and Institute of Experimental Botany, The Czech Academy of SciencesOlomouc78371Czech Republic
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Faculty of SciencePalacký University and Institute of Experimental Botany, The Czech Academy of SciencesOlomouc78371Czech Republic
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of SciencePalacký University and Institute of Experimental Botany, The Czech Academy of SciencesOlomouc78371Czech Republic
| | - Akmaral Serikbayeva
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE)King Abdullah University of Science and TechnologyThuwal23955Saudi Arabia
| | - Paola Bonfante
- Department of Life Sciences and Systems BiologyUniversity of TurinTurin10125Italy
| | - Salim Al‐Babili
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE)King Abdullah University of Science and TechnologyThuwal23955Saudi Arabia
| | - Luisa Lanfranco
- Department of Life Sciences and Systems BiologyUniversity of TurinTurin10125Italy
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7
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Iezzi M, Cusumano D, Piccari D, Menna S, Catucci F, D'Aviero A, Re A, Di Dio C, Quaranta F, Boschetti A, Marras M, Piro D, Votta C, Sanna E, Flore C, Mattiucci G, Valentini V. PO-1483 A predictive model to quantify the dosimetric impact of inter-fraction variability in breast cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03447-8] [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: 10/18/2022]
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8
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Votta C, Boldrini L, Chiloiro G, Romano A, Bonelli E, Autorino R, Bianchi M, Campitelli M, Galofaro E, Nardangeli A, Nardini M, Placidi L, Gambacorta M, Valentini V. MO-0650 Partial irradiation in cervical cancer MRgRT: a dosimetric evaluation. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02408-2] [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: 11/16/2022]
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9
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Panza G, Autorino R, Cusumano D, Boldrini L, Gui B, Russo L, Votta C, Dinapoli N, Ferrandina G, Nardangeli A, Campitelli M, Macchia G, Valentini V, Gambacorta M. PO-1343 Radiomic model to predict 2ysOS in Cervical Cancer patients underwent neoadjuvant chemoradiotherapy. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03307-2] [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: 10/18/2022]
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10
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Boschetti A, Votta C, Re A, Piro D, Marras M, D'Aviero A, Catucci F, Cusumano D, Di Dio C, Menna S, Iezzi M, Quaranta F, Flore C, Sanna E, Piccari D, Mattiucci G, Valentini V. PD-0336 Evaluation of a deep-learning segmentation software in thoracic organs at risk: an early analysis. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02829-8] [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: 10/18/2022]
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11
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Piro D, Marras M, D'Aviero A, Boschetti A, Votta C, Re A, Catucci F, Cusumano D, Di Dio C, Menna S, Iezzi M, Quaranta F, Flore C, Sanna E, Piccari D, Mattiucci G, Valentini V. PO-1887 Validation of deep learning auto-segmentation in pelvic organs at risk: a preliminary analysis. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03850-6] [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: 11/26/2022]
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12
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Fiorilli V, Maghrebi M, Novero M, Votta C, Mazzarella T, Buffoni B, Astolfi S, Vigani G. Arbuscular Mycorrhizal Symbiosis Differentially Affects the Nutritional Status of Two Durum Wheat Genotypes under Drought Conditions. Plants (Basel) 2022; 11:plants11060804. [PMID: 35336686 PMCID: PMC8954065 DOI: 10.3390/plants11060804] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/23/2022] [Accepted: 03/14/2022] [Indexed: 05/17/2023]
Abstract
Durum wheat is one of the most important agricultural crops, currently providing 18% of the daily intake of calories and 20% of daily protein intake for humans. However, being wheat that is cultivated in arid and semiarid areas, its productivity is threatened by drought stress, which is being exacerbated by climate change. Therefore, the identification of drought tolerant wheat genotypes is critical for increasing grain yield and also improving the capability of crops to uptake and assimilate nutrients, which are seriously affected by drought. This work aimed to determine the effect of arbuscular mycorrhizal fungi (AMF) on plant growth under normal and limited water availability in two durum wheat genotypes (Svevo and Etrusco). Furthermore, we investigated how the plant nutritional status responds to drought stress. We found that the response of Svevo and Etrusco to drought stress was differentially affected by AMF. Interestingly, we revealed that AMF positively affected sulfur homeostasis under drought conditions, mainly in the Svevo cultivar. The results provide a valuable indication that the identification of drought tolerant plants cannot ignore their nutrient use efficiency or the impact of other biotic soil components (i.e., AMF).
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Affiliation(s)
- Valentina Fiorilli
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Moez Maghrebi
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Mara Novero
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Cristina Votta
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Teresa Mazzarella
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Beatrice Buffoni
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
| | - Stefania Astolfi
- Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy;
| | - Gianpiero Vigani
- Department of Life Sciences and Systems Biology, Università degli Studi di Torino, 10124 Torino, Italy; (V.F.); (M.M.); (M.N.); (C.V.); (T.M.); (B.B.)
- Correspondence: ; Tel.: +39-0116706360
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13
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Placidi L, Nardini M, Cusumano D, Boldini L, Chiloiro G, Votta C, Antonelli M, Valentini V, Indovina L. Dosimetric and planning evaluation of IMRT vs VMAT-like plans for magnetic resonance guided radiotherapy treatment. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00168-5] [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: 11/27/2022] Open
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14
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Wang JY, Alseekh S, Xiao T, Ablazov A, Perez de Souza L, Fiorilli V, Anggarani M, Lin PY, Votta C, Novero M, Jamil M, Lanfranco L, Hsing YIC, Blilou I, Fernie AR, Al-Babili S. Multi-omics approaches explain the growth-promoting effect of the apocarotenoid growth regulator zaxinone in rice. Commun Biol 2021; 4:1222. [PMID: 34697384 PMCID: PMC8545949 DOI: 10.1038/s42003-021-02740-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 02/18/2021] [Accepted: 09/24/2021] [Indexed: 11/19/2022] Open
Abstract
The apocarotenoid zaxinone promotes growth and suppresses strigolactone biosynthesis in rice. To shed light on the mechanisms underlying its growth-promoting effect, we employed a combined omics approach integrating transcriptomics and metabolomics analysis of rice seedlings treated with zaxinone, and determined the resulting changes at the cellular and hormonal levels. Metabolites as well as transcripts analysis demonstrate that zaxinone application increased sugar content and triggered glycolysis, the tricarboxylic acid cycle and other sugar-related metabolic processes in rice roots. In addition, zaxinone treatment led to an increased root starch content and induced glycosylation of cytokinins. The transcriptomic, metabolic and hormonal changes were accompanied by striking alterations of roots at cellular level, which showed an increase in apex length, diameter, and the number of cells and cortex cell layers. Remarkably, zaxinone did not affect the metabolism of roots in a strigolactone deficient mutant, suggesting an essential role of strigolactone in the zaxinone growth-promoting activity. Taken together, our results unravel zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. Moreover, they suggest that zaxinone promotes rice growth most likely by increasing sugar uptake and metabolism, and reinforce the potential of this compound in increasing rice performance. Wang et al. report zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. This study shows that zaxinone promotes rice growth by enhancing root sugar uptake and metabolism and modulation of cytokinin content, indicating the potential application of this compound in increasing rice performance.
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Affiliation(s)
- Jian You Wang
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany.,Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria
| | - Tingting Xiao
- The Laboratory of Plant Cell and Developmental Biology (LPCDB), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Abdugaffor Ablazov
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Leonardo Perez de Souza
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Marita Anggarani
- Institute of Plant and Microbial Biology, Academia Sinica, No. 128, Section 2, Yien-Chu-Yuan Road, Taipei, 11529, Taiwan
| | - Pei-Yu Lin
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Cristina Votta
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Mara Novero
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Muhammad Jamil
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Yue-Ie C Hsing
- Institute of Plant and Microbial Biology, Academia Sinica, No. 128, Section 2, Yien-Chu-Yuan Road, Taipei, 11529, Taiwan
| | - Ikram Blilou
- The Laboratory of Plant Cell and Developmental Biology (LPCDB), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Salim Al-Babili
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
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15
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Votta C, Boldrini L, Merola B, Chiloiro G, Romano A, Cusumano D, Turco G, Bianchi M, Cornacchione P, Indovina L, Gambacorta M, Valentini V. PO-1969 The contribution of on-board hybrid MRI for planning optimization: movement analysis of the uterus. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08420-6] [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: 10/20/2022]
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16
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Placidi L, Nardini M, Cusumano D, Boldrini L, Catucci F, Chiloiro G, Votta C, Valentini V, Indovina L. PO-1880 Dosimetric accuracy of dual isocenter irradiation in magnetic resonance guided radiotherapy system. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08331-6] [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: 10/20/2022]
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17
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Cusumano D, Lenkowicz J, Votta C, Nardini M, Boldrini L, Placidi L, Catucci F, Dinapoli N, Antonelli M, Romano A, De Luca V, Chiloiro G, Indovina L, Valentini V. OC-0521 A deep learning approach to generate synthetic CT in low field MR-guided radiotherapy for lung cases. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06947-4] [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: 10/20/2022]
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18
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Placidi L, Nardini M, Cusumano D, Boldrini L, Chiloiro G, Romano A, Votta C, Antonelli M, Valentini V, Indovina L. PO-1861 Evaluation of VMAT-like planning technique for magnetic resonance guided radiotherapy treatment. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08312-2] [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: 11/25/2022]
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19
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Placidi L, Nardini M, Cusumano D, Boldrini L, Chiloiro G, Romano A, Votta C, Antonelli MV, Valentini V, Indovina L. VMAT-like plans for magnetic resonance guided radiotherapy: Addressing unmet needs. Phys Med 2021; 85:72-78. [PMID: 33979726 DOI: 10.1016/j.ejmp.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/05/2021] [Revised: 03/29/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE VMAT delivery technique is currently not applicable to Magnetic Resonance-guided radiotherapy (MRgRT) hybrid systems. Aim of this study is to evaluate an innovative VMAT-like (VML) delivery technique. MATERIAL AND METHODS First, planning and dosimetric evaluation of the MRgRT VML treatment have been performed on 10 different disease sites and the results have been compared with the corresponding IMRT plans. Then, in the second phase, 10 of the most dosimetrically challenging locally advanced pancreas treatment plans have been retrospectively re-planned using the VML approach to explore the potentiality of this new delivery technique. Finally, VML robustness was evaluated and compared with the IMRT plans, considering a lateral positioning error of ± 5 mm. RESULTS In phase one, all VML plans were within constraint for all OARs. When PTV coverage is considered, in the 50% of the cases VML PTV coverage is equal or higher than in IMRT plan. In the remaining 50%, the highest target under coverage difference in comparison with IMRT plan is -1.71%. The mean and maximum treatment time differences (VML-IMRT) is 0.2 min and 3.1 min respectively. In phase two, the treatment time variation (VML-IMRT), shows a mean, maximum and minimum variations of 1.3, 4.6 and -0.6 min respectively. All VML plans have a better target coverage if compared with IMRT plans, keeping in any case the OARs constraints within tolerance. VML doesn't increase plan robustness. CONCLUSION VMAT-like treatment approach appeared to be an efficient planning solution and it was decided to clinically implement it in daily practice, especially in the frame of hypo fractionated treatments.
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Affiliation(s)
- L Placidi
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - M Nardini
- Università Cattolica del Sacro Cuore, Rome, Italy
| | - D Cusumano
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy.
| | - L Boldrini
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
| | - G Chiloiro
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
| | - A Romano
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
| | - C Votta
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
| | - M V Antonelli
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
| | - V Valentini
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - L Indovina
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Roma, Italy
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20
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Placidi L, Nardini M, Cusumano D, Boldrini L, Catucci F, Chiloiro G, Votta C, Valentini V, Indovina L. Dosimetric accuracy of dual isocenter irradiation in low magnetic field resonance guided radiotherapy system for extended abdominal tumours. Phys Med 2021; 84:149-158. [PMID: 33895666 DOI: 10.1016/j.ejmp.2021.03.037] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE Due to limited field size of Magnetic Resonance Linear Accelerators (MR-Linac), some treatments could require a dual-isocenter planning approach to achieve a complete target coverage and thus exploit the benefits of the online adaptation. This study evaluates the dosimetric accuracy of the dual-isocenter intensity modulated radiation therapy (IMRT) delivery technique for MR-Linac. MATERIAL AND METHODS Dual-isocenter multi leaf collimator (MLC) and couch accuracy tests have been performed to evaluate the delivery accuracy of the system. A mono-isocenter plan delivered in clinical practice has then been retrospectively re-planned with dual-isocenter technique. The dual-isocenter plan has been re-calculated and delivered on a 3-dimensional (3D) ArcCHECK phantom and 2-dimensional (2D) films to assess its dosimetric accuracy in terms of gamma analysis. Clinical and planning target volume (CTV and PTV respectively) coverage robustness was then investigated after the introduction of ± 2 mm and ± 5 mm positioning errors by shifting the couch. RESULTS MLC and couch accuracy tests confirmed the system accuracy in delivering a dual-isocenter irradiation. 2D/3D gamma analysis results occurred always to be above 95% if considered a gamma criteria 1%/2 mm and 1%/1 mm respectively for the 2D and 3D analysis. The mean variations for CTV D98% and PTV V95% were 0.2% and 1.1% respectively when positioning error was introduced separately in each direction, while the maximum observed variations were 0.9% (CTV) and 3.7% (PTV). CONCLUSION The dosimetric accuracy of dual-isocenter irradiation has been verified for MR-Linac, achieving accurate and robust treatment strategy and improving dose conformality also in presence of targets whose extension exceeds the nominal maximum field size.
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Affiliation(s)
- L Placidi
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - M Nardini
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy; Università Cattolica del Sacro Cuore, Rome, Italy.
| | - D Cusumano
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
| | - L Boldrini
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
| | - F Catucci
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
| | - G Chiloiro
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
| | - C Votta
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
| | - V Valentini
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - L Indovina
- Fondazione Policlinico Universitario ''A. Gemelli'' IRCCS, Italy
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21
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Placidi L, Pollutri V, Votta C, Cusumano D, Boldrini L, Chiloiro G, Azario L, De Spirito M, Valentini V. PO-1604: Quantitative analysis of treatment process time for MRI-LINAC system gating efficiency optimization. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01622-4] [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: 10/22/2022]
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22
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Votta C, Cusumano D, Boldrini L, Pollutri V, Placidi L, Chiloiro G, Romano A, Antonelli M, Valentini V. PD-0069: Use of prescription isodose boundary to optimise treatment delivery during MR-guided Radiotherapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00095-5] [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: 10/22/2022]
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23
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Piro D, Boldrini L, Cornacchione P, Votta C, Bianchi M, Balducci M, Gambacorta MA, Valentini V, Pasini D. Radiation therapy technologists' involvement and opinion in research: A national survey in Italy. Tech Innov Patient Support Radiat Oncol 2020; 15:11-14. [PMID: 32613093 PMCID: PMC7322338 DOI: 10.1016/j.tipsro.2020.05.002] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/04/2020] [Accepted: 05/14/2020] [Indexed: 10/26/2022] Open
Abstract
Introduction This survey describes Italian RTTs' involvement and opinions in research activities related to radiation oncology. Primary aim was to assess the degree of involvement of the national RTTs community in research and to describe how RTTs can integrate their skills collaborating with other professionals. Materials and methods A ten-items multiple-choice questionnaire, with 2-8 possible responses, was developed by a steering committee and generated on a survey platform. Links were sent via email to Italian RTTs.The questions were divided in 3 domains: demographic data; scientific research and activity; opinions about RTTs role in scientific research. The survey started on October 1, 2018 and ended on January 31, 2019. Results One hundred thirty-five out of 509 (26.5%) RTTs responded to the questionnaire at its expiring date; 97.73% think to be valid contributors in radiation oncology research, expressing clear interest in "data collection" tasks (52.71%); 38.64% feel unsupported by other professionals in the research team and 59.85% of the respondents are not members in any scientific society. Conclusions The role of Italian RTTs in research is heterogeneous. Mainly RTTs in the age range from 30 to 40 years responded to the survey showing their interest in scientific research. This might be related to different informatics and educational skills as well as to personal attitudes. RTTs particular skills, like data management and technical hypothesis generation abilities, are of benefit to realize research projects. Therefore, engaging RTTs in research activities is strongly suggested.
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Affiliation(s)
- D Piro
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - L Boldrini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Radiologia, Università Cattolica del Sacro Cuore, Roma, Italy
| | - P Cornacchione
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - C Votta
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - M Bianchi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - M Balducci
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Radiologia, Università Cattolica del Sacro Cuore, Roma, Italy
| | - M A Gambacorta
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Radiologia, Università Cattolica del Sacro Cuore, Roma, Italy
| | - V Valentini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Radiologia, Università Cattolica del Sacro Cuore, Roma, Italy
| | - D Pasini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
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Boldrini L, Colloca G, Cellini F, Chiloiro G, Bellieni A, Mattiucci G, Antonelli M, Pollutri V, Votta C, Massaccesi M, Manfrida S, Fionda B, Frascino V, Masiello V, Petrone A, Catucci F, Luzi S, Villani E, Balducci M, Valentini V. PO-0856: Age and frailty do not limit Magnetic Resonance guided Radiotherapy (MRgRT) in elderly patients. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31166-6] [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: 10/14/2022]
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Cellini F, Chiloiro G, Boldrini L, Massaccesi M, Mattiucci G, Antonelli M, Frascino V, Luzi S, Manfrida S, Masiello V, Petrone A, Pollutri V, Votta C, Catucci F, Fionda B, Balducci M, Gambacorta M, Valentini V. EP-1501: Feasibility of MRgRT neoadjuvant treatment for locally advanced rectal cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31810-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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