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Vandionant S, Hendrix S, Alfano R, Plusquin M, Cuypers A. Comparing cadmium-induced effects on the regulation of the DNA damage response and cell cycle progression between entire rosettes and individual leaves of Arabidopsis thaliana. Plant Physiol Biochem 2023; 204:108105. [PMID: 37883918 DOI: 10.1016/j.plaphy.2023.108105] [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: 07/18/2023] [Revised: 10/09/2023] [Accepted: 10/15/2023] [Indexed: 10/28/2023]
Abstract
Cadmium (Cd) activates the DNA damage response (DDR) and inhibits the cell cycle in Arabidopsis thaliana through the transcription factor SUPPRESSOR OF GAMMA RESPONSE 1. The aim of this study was to investigate which individual leaf best reflects the Cd-induced effects on the regulation of the DDR and cell cycle progression in rosettes, enabling a more profound interpretation of the rosette data since detailed information, provided by the individual leaf responses, is lost when studying the whole rosette. Wild-type A. thaliana plants were cultivated in hydroponics and exposed to different Cd concentrations. Studied individual leaves were leaf 1 and 2, which emerged before Cd exposure, and leaf 3, which emerged upon Cd exposure. The DDR and cell cycle regulation were studied in rosettes as well as individual leaves after several days of Cd exposure. Varying concentration-dependent response patterns were observed between the entire rosette and individual leaves. Gene expression of selected DDR and cell cycle regulators showed higher similarity in their response between the rosette and the individual leaf emerged during Cd exposure than between both individual leaves. The same pattern was observed for plant growth and cell cycle-related parameters. We conclude that Cd-induced effects on the regulation of the DDR and cell cycle progression in the leaf that emerged during Cd exposure, resemble those observed in the rosette the most, which contributes to the interpretation of the rosette data in the framework of plant development and after exposure to Cd.
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Affiliation(s)
- Stéphanie Vandionant
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Sophie Hendrix
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Rossella Alfano
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Ann Cuypers
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium.
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Mehendiratta M, Sant VK, Lakhanpal M, Chauhan K. A rare histopathological variant of Schwannoma with rosette-like arrangements and epithelioid cells: a case report from a histopathologist's perspective. J Korean Assoc Oral Maxillofac Surg 2023; 49:233-238. [PMID: 37641908 PMCID: PMC10466011 DOI: 10.5125/jkaoms.2023.49.4.233] [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: 03/06/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 08/31/2023] Open
Abstract
Schwannomas exhibit histopathological variation that leads to diagnostic dilemmas, although less frequent in the oral cavity. We describe a case with unique histopathology and no relevant clinical history that adds to the breadth of literature on the diversity presented by Schwannoma. A 60-year-old female patient presented with a small dome-shaped, asymptomatic swelling on the alveolar ridge 6 years in duration. Histopathologically, it showed rich cellular pathology with a unique arrangement of tumor cells forming irregular rosettes. Each rosette presented with a central core of fibrincollagenous material and the tumor cells were arranged on the periphery, exhibiting epithelioid change with evidence of mild cellular and nuclear pleomorphism. On immunohistochemical evaluation, the cells were strongly and diffusely positive for S-100 and negative for Ki-67. A diagnosis of benign Schwannoma with a rosette-like arrangement with epithelioid change was made. The case report emphasizes the risk of misdiagnosis and the importance of awareness regarding rare histopathological variants of Schwannoma.
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Affiliation(s)
- Monica Mehendiratta
- Department of Oral and Maxillofacial Pathology, I.T.S Dental College, Hospital & Research Centre, Greater Noida, India
| | - Vikas Kumar Sant
- Department of Oral and Maxillofacial Pathology, Sudha Rustagi College of Dental Sciences & Research, Faridabad, India
| | - Manisha Lakhanpal
- Department of Oral and Maxillofacial Pathology, I.T.S Dental College, Hospital & Research Centre, Greater Noida, India
| | - Keerti Chauhan
- Department of Oral and Maxillofacial Pathology, I.T.S Dental College, Hospital & Research Centre, Greater Noida, India
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Oh SJ. Rosette-forming epithelioid osteosarcoma in the rib: a rare case of location and morphology. J Pathol Transl Med 2021; 55:406-409. [PMID: 34333953 PMCID: PMC8601957 DOI: 10.4132/jptm.2021.06.22] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/22/2021] [Indexed: 11/17/2022] Open
Abstract
The rib is an unusual location for osteosarcoma and is reported in only 2% of all cases. The major histological variants of osteosarcoma are osteoblastic, chondroblastic, and fibroblastic, with a few rare variants including one epithelioid type. This report describes a 44-year-old male with an osteolytic mass in the right seventh rib. Histological examination revealed osteosarcoma with unique features of epithelioid appearance and rosette structures. To the best of our knowledge, this is the first reported case of a rosette-forming osteosarcoma of the rib that showed epithelioid morphology. Despite successful surgery, the patient’s prognosis was poor because this malignancy had an unusual location within the axial skeleton and was a rare histological variant.
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Affiliation(s)
- Sun-Ju Oh
- Department of Pathology, Kosin University College of Medicine, Busan, Korea
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Leng S, Carlone DL, Guagliardo NA, Barrett PQ, Breault DT. Rosette morphology in zona glomerulosa formation and function. Mol Cell Endocrinol 2021; 530:111287. [PMID: 33891993 PMCID: PMC8159910 DOI: 10.1016/j.mce.2021.111287] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/29/2021] [Accepted: 04/13/2021] [Indexed: 12/18/2022]
Abstract
How morphology informs function is a fundamental biological question. Here, we review the morphological features of the adrenal zona glomerulosa (zG), highlighting recent cellular and molecular discoveries that govern its formation. The zG consists of glomeruli enwrapped in a Laminin-β1-enriched basement membrane (BM). Within each glomerulus, zG cells are organized as rosettes, a multicellular structure widely used throughout development to mediate epithelial remodeling, but not often found in healthy adult tissues. Rosettes arise by constriction at a common cellular contact point mediated/facilitated by adherens junctions (AJs). In mice, small, dispersed AJs first appear postnatally and enrich along the entire cell-cell contact around 10 days after birth. Subsequently, these AJ-rich contacts contract, allowing rosettes to form. Concurrently, flat sheet-like domains in the nascent zG, undergo invagination and folding, gradually giving rise to the compact round glomeruli that comprise the adult zG. How these structures impact adrenal function is discussed.
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Affiliation(s)
- Sining Leng
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, 02115, USA.
| | - Diana L Carlone
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, 02115, USA.
| | - Nick A Guagliardo
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, USA.
| | - Paula Q Barrett
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, USA.
| | - David T Breault
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, 02115, USA.
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Kalra SK, Sali AP, Somal PK, Sancheti S. Pericardial Fluid Cytology: A Rosettey Affair…. Acta Cytol 2020; 64:507-510. [PMID: 32252050 DOI: 10.1159/000506726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 11/19/2022]
Affiliation(s)
| | - Akash Pramod Sali
- Department of Pathology, Homi Bhabha Cancer Hospital, Sangrur, India
| | - Puneet Kaur Somal
- Department of Pathology, Homi Bhabha Cancer Hospital, Sangrur, India
| | - Sankalp Sancheti
- Department of Pathology, Homi Bhabha Cancer Hospital, Sangrur, India,
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Soto-Suárez M, Serrato AJ, Rojas-González JA, Bautista R, Sahrawy M. Transcriptomic and proteomic approach to identify differentially expressed genes and proteins in Arabidopsis thaliana mutants lacking chloroplastic 1 and cytosolic FBPases reveals several levels of metabolic regulation. BMC Plant Biol 2016; 16:258. [PMID: 27905870 PMCID: PMC5134223 DOI: 10.1186/s12870-016-0945-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 07/06/2016] [Accepted: 11/22/2016] [Indexed: 05/11/2023]
Abstract
BACKGROUND During the photosynthesis, two isoforms of the fructose-1,6-bisphosphatase (FBPase), the chloroplastidial (cFBP1) and the cytosolic (cyFBP), catalyse the first irreversible step during the conversion of triose phosphates (TP) to starch or sucrose, respectively. Deficiency in cyFBP and cFBP1 isoforms provokes an imbalance of the starch/sucrose ratio, causing a dramatic effect on plant development when the plastidial enzyme is lacking. RESULTS We study the correlation between the transcriptome and proteome profile in rosettes and roots when cFBP1 or cyFBP genes are disrupted in Arabidopsis thaliana knock-out mutants. By using a 70-mer oligonucleotide microarray representing the genome of Arabidopsis we were able to identify 1067 and 1243 genes whose expressions are altered in the rosettes and roots of the cfbp1 mutant respectively; whilst in rosettes and roots of cyfbp mutant 1068 and 1079 genes are being up- or down-regulated respectively. Quantitative real-time PCR validated 100% of a set of 14 selected genes differentially expressed according to our microarray analysis. Two-dimensional (2-D) gel electrophoresis-based proteomic analysis revealed quantitative differences in 36 and 26 proteins regulated in rosettes and roots of cfbp1, respectively, whereas the 18 and 48 others were regulated in rosettes and roots of cyfbp mutant, respectively. The genes differentially expressed and the proteins more or less abundant revealed changes in protein metabolism, RNA regulation, cell signalling and organization, carbon metabolism, redox regulation, and transport together with biotic and abiotic stress. Notably, a significant set (25%) of the proteins identified were also found to be regulated at a transcriptional level. CONCLUSION This transcriptomic and proteomic analysis is the first comprehensive and comparative study of the gene/protein re-adjustment that occurs in photosynthetic and non-photosynthetic organs of Arabidopsis mutants lacking FBPase isoforms.
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Affiliation(s)
- Mauricio Soto-Suárez
- Departamento de Bioquímica, Biología Molecular y Celular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain
- Present address: Corporación Colombiana de Investigación Agropecuaria, CORPOICA, Km 14 vía Mosquera, Mosquera, Cundinamarca Colombia
| | - Antonio J. Serrato
- Departamento de Bioquímica, Biología Molecular y Celular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain
| | - José A. Rojas-González
- Departamento de Bioquímica, Biología Molecular y Celular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain
| | - Rocío Bautista
- Plataforma Andaluza de Bioinformática/SCBI, Edificio de Bioinnovación, Parque Tecnológico de Andalucía, Universidad de Málaga, C/ Severo Ochoa 34, 29590 Campanillas, Spain
| | - Mariam Sahrawy
- Departamento de Bioquímica, Biología Molecular y Celular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, 18008 Granada, Spain
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Cho SH, Song JY, Shin J, Kim S. Neonatal disease environment limits the efficacy of retinal transplantation in the LCA8 mouse model. BMC Ophthalmol 2016; 16:193. [PMID: 27809828 PMCID: PMC5095973 DOI: 10.1186/s12886-016-0368-0] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/20/2016] [Indexed: 11/17/2022] Open
Abstract
Background Mutations of Crb1 gene cause irreversible and incurable visual impairment in humans. This study aims to use an LCA8-like mouse model to identify host-mediated responses that might interfere with survival, retinal integration and differentiation of grafted cells during neonatal cell therapy. Methods Mixed retinal donor cells (1 ~ 2 × 104) isolated from neural retinas of neonatal eGFP transgenic mice were injected into the subretinal space of LCA8-like model neonatal mice. Markers of specific cell types were used to analyze microglial attraction, CSPG induction and retinal cell differentiation. The positions of host retinal cells were traced according to their laminar location during disease progression to look for host cell rearrangements that might inhibit retinal integration of the transplanted cells. Results Transplanted retinal cells showed poor survival and attracted microglial cells, but CSPG was not greatly induced. Retinas of the LCA8 model hosts underwent significant cellular rearrangement, including rosette formation and apical displacement of inner retinal cells. Conclusions Local disease environment, particularly host immune responses to injected cells and formation of a physical barrier caused by apical migration of host retinal cells upon disruption of outer limiting membrane, may impose two major barriers in LCAs cell transplantation therapy.
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Affiliation(s)
- Seo-Hee Cho
- Department of Anatomy and Cell Biology, Shriners Hospitals Pediatric Research Center, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA, 19140, USA.
| | - Ji Yun Song
- Department of Anatomy and Cell Biology, Shriners Hospitals Pediatric Research Center, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Jinyeon Shin
- Department of Anatomy and Cell Biology, Shriners Hospitals Pediatric Research Center, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Seonhee Kim
- Department of Anatomy and Cell Biology, Shriners Hospitals Pediatric Research Center, Lewis Katz School of Medicine at Temple University, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
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Wang H, Tam LK, Constable RT, Galiana G. Fast rotary nonlinear spatial acquisition (FRONSAC) imaging. Magn Reson Med 2016; 75:1154-65. [PMID: 25950279 PMCID: PMC4637004 DOI: 10.1002/mrm.25703] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 11/24/2014] [Revised: 02/20/2015] [Accepted: 02/26/2015] [Indexed: 11/10/2022]
Abstract
PURPOSE Nonlinear spatial encoding magnetic fields (SEMs) have been studied to reconstruct images from a minimum number of echoes. Previous work has also explored single shot trajectories in nonlinear SEMs. However, the search continues for optimal schemes that apply nonlinear SEMs to improve spatial encoding efficiency and image quality. THEORY AND METHODS We enhance the encoding efficiency of standard linear gradient trajectories by adding a rapidly rotating nonlinear SEM of moderate amplitude, the so called FRONSAC (Fast ROtary Nonlinear Spatial ACquisition) imaging. This additional gradient greatly improves the image quality of highly undersampled single-shot trajectories, including EPI, Spiral, and Rosette trajectories. RESULTS Our simulations, including noise and dephasing effects, test the effect of adding FRONSAC gradients, demonstrating the applicability of this approach. Performance is explained by demonstrating the additional k-space sampling the nonlinear gradient provides. Studies of the optimal amplitude and frequency of the additional FRONSAC field are presented, and the role of enhanced sampling during the readout demonstrated. Dynamic field mapping in a second-order gradient system shows the proposed gradient waveforms are feasible. CONCLUSION Images resulting from highly undersampled existing k-space trajectories, such as EPI, Spiral, and Rosette, are greatly enhanced simply by adding a rotating nonlinear SEM field.
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Affiliation(s)
- Haifeng Wang
- Department of Diagnostic Radiology, Yale University, New Haven, CT, USA
| | - Leo K. Tam
- Department of Diagnostic Radiology, Yale University, New Haven, CT, USA
| | - R. Todd Constable
- Department of Diagnostic Radiology, Yale University, New Haven, CT, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
- Department of Neurosurgery, Yale University, New Haven, CT, USA
| | - Gigi Galiana
- Department of Diagnostic Radiology, Yale University, New Haven, CT, USA
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Abstract
Multicellular rosettes have recently been appreciated as important cellular intermediates that are observed during the formation of diverse organ systems. These rosettes are polarized, transient epithelial structures that sometimes recapitulate the form of the adult organ. Rosette formation has been studied in various developmental contexts, such as in the zebrafish lateral line primordium, the vertebrate pancreas, the Drosophila epithelium and retina, as well as in the adult neural stem cell niche. These studies have revealed that the cytoskeletal rearrangements responsible for rosette formation appear to be conserved. By contrast, the extracellular cues that trigger these rearrangements in vivo are less well understood and are more diverse. Here, we review recent studies of the genetic regulation and cellular transitions involved in rosette formation. We discuss and compare specific models for rosette formation and highlight outstanding questions in the field.
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Affiliation(s)
- Molly J Harding
- Department of Cell and Developmental Biology, Oregon Health & Science University, Portland, OR 97239, USA Neuroscience Graduate Program, Oregon Health & Science University, Portland, OR 97239, USA
| | - Hillary F McGraw
- Department of Cell and Developmental Biology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Alex Nechiporuk
- Department of Cell and Developmental Biology, Oregon Health & Science University, Portland, OR 97239, USA
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Seano G, Daubon T, Génot E, Primo L. Podosomes as novel players in endothelial biology. Eur J Cell Biol 2014; 93:405-12. [PMID: 25199436 DOI: 10.1016/j.ejcb.2014.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/17/2014] [Accepted: 07/28/2014] [Indexed: 11/15/2022] Open
Abstract
Podosomes and invadopodia, collectively known as invadosomes, are specialized cell-matrix contacts with an inherent ability to degrade extracellular matrix. Their occurrence in either normal (podosomes) or cancer cells (invadopodia) is thus traditionally associated with cell invasiveness and tissue remodelling. These specialized micro-domains of the plasma membrane are characterized by enrichment of F-actin, cortactin and metalloproteases. Recent developments in the field show that, under some circumstances, vascular endothelial cells (ECs) can be induced to form this kind of peculiar structures. Cultured ECs contain either 0.5-1-μm-wide individual podosomes or 5 to 10 μm wide ring-like clusters of podosomes (podosome rosettes). The formation of individual podosomes or podosome rosettes in ECs can be induced by soluble factors, such as TGFβ, VEGF, TNFα or pharmacological agents, such as phorbol esters. Recently, the evidence of the existence of such structures in vascular endothelium has been provided by ex vivo observation. Endothelial podosome rosettes have recently been functionally linked to arterial remodelling and sprouting angiogenesis. Concerted efforts aim now at confirming the relevance of endothelial podosomes in these patho-physiological processes in vivo. In the current review, we will introduce some general considerations regarding ECs in the vascular system. From there on, we will review the various EC types where podosomes have been described and the state-of-art knowledge hitherto generated regarding endothelial podosome features.
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Affiliation(s)
- Giorgio Seano
- Laboratory of Cell Migration, Candiolo Cancer Institute, FPO, IRCCS, Turin, Italy; Edwin L. Steele Laboratory for Tumor Biology, Department of Radiation Oncology, Harvard Medical School, Massachusetts General Hospital, Boston, MAUSA
| | - Thomas Daubon
- European Institute of Chemistry and Biology, Université de Bordeaux, Pessac, France; INSERM, 1045, Université de Bordeaux, Bordeaux, France
| | - Elisabeth Génot
- European Institute of Chemistry and Biology, Université de Bordeaux, Pessac, France; INSERM, 1045, Université de Bordeaux, Bordeaux, France.
| | - Luca Primo
- Laboratory of Cell Migration, Candiolo Cancer Institute, FPO, IRCCS, Turin, Italy; Department of Oncology, University of Torino, Turin, Italy.
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