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Gasparini P, Casanova M, Centonze G, Borzi C, Bergamaschi L, Collini P, Testi A, Chiaravalli S, Massimino M, Sozzi G, Ferrari A, Moro M. Establishment of 6 pediatric rhabdomyosarcoma patient’s derived xenograft models closely recapitulating patients’ tumor characteristics. Tumori 2022:3008916221110266. [PMID: 36114629 DOI: 10.1177/03008916221110266] [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: 11/16/2022]
Abstract
Introduction: The prognosis for patients with metastatic and recurrent pediatric rhabdomyosarcoma (RMS) remains poor. The availability of preclinical models is essential to identify promising treatments We established a series of pediatric RMS patient derived xenografts (PDXs), all faithfully mirroring primary tumor characteristics and representing a unique tool for clarifying the biological processes underlying RMS progression and relapse. Methods: Fresh tumor samples from 12 RMS patients were implanted subcutaneously in both flanks of immunocompromised mice. PDXs were considered as grafted after accomplishing three passages in mice. Characterization of tumor tissues and models was performed by comparing both morphology and immunoistochemical and fluorescence in situ hybridization (FISH) characteristics. Results: Six PDXs were established, with a successful take rate of 50%. All models closely mirrored parental tumor characteristics. An increased grafting rate for tumors derived from patients with worse outcome (p = 0.006) was detected. For 50% PDXs grafting occurred when the corresponding patient was still alive. Conclusion: Our findings increase the number of available RMS PDX models and strengthen the role of PDXs as useful preclinical tools for patients with unmet medical needs and to develop personalized therapies.
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Affiliation(s)
- Patrizia Gasparini
- Tumor Genomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Michela Casanova
- Paediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Giovanni Centonze
- First Pathology Division, Department of Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Cristina Borzi
- Tumor Genomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Luca Bergamaschi
- Paediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Paola Collini
- Soft Tissue and Bone Pathology, Histopathology and Pediatric Pathology Unit, Department of Diagnostic Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Adele Testi
- Laboratory of Molecular Pathology, Department of Pathology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Stefano Chiaravalli
- Paediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Maura Massimino
- Paediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Gabriella Sozzi
- Tumor Genomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Andrea Ferrari
- Paediatric Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Massimo Moro
- Tumor Genomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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Abstract
Local treatment plays a key role for patients' outcome in tumors of the urogenital tract in children. Despite a great variety of different etiologies, the specific localization of pediatric urogenital tumors renders several characteristic demands to the treating personnel. Surgery and radiotherapy are the main elements of local treatment in this group of neoplasms. Numerous new guidelines and innovative technical developments of surgery and radiotherapy have recently been integrated into treatment concepts for pediatric urogenital tumors. Due to the broadness of the field it is not possible to give a full overview over all aspects. Therefore, this article highlights the most important innovations and new guidelines of surgery and radiotherapy of pediatric urogenital tumors.
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Affiliation(s)
- Fuchs J
- Department of Pediatric Surgery and Pediatric Urology, University Children´s Hospital Tuebingen, Tuebingen, Germany.
| | - Schmidt A
- Department of Pediatric Surgery and Pediatric Urology, University Children´s Hospital Tuebingen, Tuebingen, Germany
| | - Ellerkamp V
- Department of Pediatric Surgery and Pediatric Urology, University Children´s Hospital Tuebingen, Tuebingen, Germany
| | - Paulsen F
- Department of Radiation Oncology, University Hospital Tuebingen, Tuebingen, Germany
| | - Melchior P
- Department of Radiotherapy and Radiation Oncology, University Hospital, Homburg, Germany
| | - Timmermann B
- Department of Particle Therapy, West German Proton Therapy Centre, University Hospital Essen, Essen, Germany
| | - Warmann Sw
- Department of Pediatric Surgery and Pediatric Urology, University Children´s Hospital Tuebingen, Tuebingen, Germany
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Rogers TN, Seitz G, Fuchs J, Martelli H, Dasgupta R, Routh JC, Hawkins DS, Koscielniak E, Bisogno G, Rodeberg DA. Surgical management of paratesticular rhabdomyosarcoma: A consensus opinion from the Children's Oncology Group, European paediatric Soft tissue sarcoma Study Group, and the Cooperative Weichteilsarkom Studiengruppe. Pediatr Blood Cancer 2021; 68:e28938. [PMID: 33522706 PMCID: PMC9019908 DOI: 10.1002/pbc.28938] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 09/08/2020] [Revised: 12/16/2020] [Accepted: 01/14/2021] [Indexed: 12/14/2022]
Abstract
The treatment of paratesticular rhabdomyosarcoma (PT-RMS) has varied over time and by cooperative group. The International Soft Tissue Sarcoma Database Consortium (INSTRuCT) is a collaboration of the Children's Oncology Group (COG) Soft Tissue Sarcoma Committee, European pediatric Soft tissue sarcoma Study Group (EpSSG), and the Cooperative Weichteilsarkom Studiengruppe (CWS). The INSTRuCT surgical committee has been given charge of the development of internationally applicable consensus guidelines for the surgical treatment of rhabdomyosarcoma. This clinical consensus opinion document addresses accepted principles and areas of controversy, such as scrotal violation and retroperitoneal nodal evaluation, providing an evidence-based guideline for the surgical treatment for PT-RMS.
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Affiliation(s)
- Timothy N. Rogers
- Department of Paediatric Surgery, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Guido Seitz
- Department of Pediatric Surgery, University Hospital Giessen-Marburg, Marburg, Germany
| | - Jörg Fuchs
- Department of Pediatric Surgery and Pediatric Urology, University Children’s Hospital, Hoppe-Seyler-Strasse 1, 72076 Tuebingen, Germany
| | - Helene Martelli
- Department of paediatric surgery, Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Saclay, Le Kremlin Bicêtre, France
| | - Roshni Dasgupta
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH USA
| | - Jonathan C. Routh
- Departments of Surgery and Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Douglas S. Hawkins
- Division of Hematology/Oncology, Seattle Children’s Hospital, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Ewa Koscielniak
- Klinikum Stuttgart, Zentrum für Kinder-, Jugend-und Frauenmedizin, Olgahospital, Pediatrics 5 (Pediatric Oncology Hematology and Immunology), Kriegsbergstrasse 62, 70174 Stuttgart, Germany
| | - Gianni Bisogno
- Hematology and Oncology Division, Department of Women’s and Children’s Health, Padova University Hospital, Padova, Italy
| | - David A. Rodeberg
- Division Pediatric Surgery, East Carolina University, Greenville, NC, US
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