1
|
Chen J, Baxi K, Lipsitt AE, Hensch NR, Wang L, Sreenivas P, Modi P, Zhao XR, Baudin A, Robledo DG, Bandyopadhyay A, Sugalski A, Challa AK, Kurmashev D, Gilbert AR, Tomlinson GE, Houghton P, Chen Y, Hayes MN, Chen EY, Libich DS, Ignatius MS. Defining function of wild-type and three patient-specific TP53 mutations in a zebrafish model of embryonal rhabdomyosarcoma. eLife 2023; 12:e68221. [PMID: 37266578 PMCID: PMC10322150 DOI: 10.7554/elife.68221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/01/2023] [Indexed: 06/03/2023] Open
Abstract
In embryonal rhabdomyosarcoma (ERMS) and generally in sarcomas, the role of wild-type and loss- or gain-of-function TP53 mutations remains largely undefined. Eliminating mutant or restoring wild-type p53 is challenging; nevertheless, understanding p53 variant effects on tumorigenesis remains central to realizing better treatment outcomes. In ERMS, >70% of patients retain wild-type TP53, yet mutations when present are associated with worse prognosis. Employing a kRASG12D-driven ERMS tumor model and tp53 null (tp53-/-) zebrafish, we define wild-type and patient-specific TP53 mutant effects on tumorigenesis. We demonstrate that tp53 is a major suppressor of tumorigenesis, where tp53 loss expands tumor initiation from <35% to >97% of animals. Characterizing three patient-specific alleles reveals that TP53C176F partially retains wild-type p53 apoptotic activity that can be exploited, whereas TP53P153Δ and TP53Y220C encode two structurally related proteins with gain-of-function effects that predispose to head musculature ERMS. TP53P153Δ unexpectedly also predisposes to hedgehog-expressing medulloblastomas in the kRASG12D-driven ERMS-model.
Collapse
Affiliation(s)
- Jiangfei Chen
- Institute of Environmental Safety and Human Health, Wenzhou Medical UniversityWenzhouChina
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
| | - Kunal Baxi
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Amanda E Lipsitt
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Pediatrics, Division of Hematology Oncology, UT Health Sciences CenterSan AntonioUnited States
| | - Nicole Rae Hensch
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Long Wang
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Prethish Sreenivas
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Paulomi Modi
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Xiang Ru Zhao
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Antoine Baudin
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Biochemistry and Structural Biology, UT Health Sciences CenterSan AntonioUnited States
| | - Daniel G Robledo
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
| | - Abhik Bandyopadhyay
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
| | - Aaron Sugalski
- Department of Pediatrics, Division of Hematology Oncology, UT Health Sciences CenterSan AntonioUnited States
| | - Anil K Challa
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Biology, University of Alabama at BirminghamBirminghamUnited States
| | - Dias Kurmashev
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
| | - Andrea R Gilbert
- Department of Pathology and Laboratory Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Gail E Tomlinson
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Pediatrics, Division of Hematology Oncology, UT Health Sciences CenterSan AntonioUnited States
| | - Peter Houghton
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| | - Yidong Chen
- Department of Population Health Sciences, UT Health Sciences CenterSan AntonioUnited States
| | - Madeline N Hayes
- Developmental and Stem Cell Biology, Hospital for Sick ChildrenTorontoCanada
| | - Eleanor Y Chen
- Department of Laboratory Medicine and Pathology, University of WashingtonSeattleUnited States
| | - David S Libich
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Biochemistry and Structural Biology, UT Health Sciences CenterSan AntonioUnited States
| | - Myron S Ignatius
- Greehey Children's Cancer Research Institute (GCCRI), UT Health Sciences CenterSan AntonioUnited States
- Department of Molecular Medicine, UT Health Sciences CenterSan AntonioUnited States
| |
Collapse
|