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Updated: Feb 10, 2026

Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Identification of RECK as an evolutionarily conserved tumor suppressor gene for zebrafish malignant peripheral nerve
Rashmi Kumari1, Martin R Silic1, Yava L Jones-Hall1,2
1Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana 47907, USA.
Abstract:
Malignant peripheral nerve sheath tumors (MPNSTs) are a type of sarcoma with poor prognosis due to their complex genetic changes, invasive growth, and insensitivity to chemo- and radiotherapies. One of the most frequently lost chromosome arms in human MPNSTs is chromosome 9p. However, the cancer driver genes located on it remain largely unknown, except the tumor suppressor gene, p16 (INK4)/CDKN2A. Previously, we identified RECK as a tumor suppressor gene candidate on chromosome 9p using zebrafish-human comparative oncogenomics. In this study, we investigated the tumorigenesis of the reck gene using zebrafish genetic models in both tp53 and ribosomal protein gene mutation background. We also examined the biological effects of RECK gene restoration in human MPNST cell lines. These results provide the first genetic evidence that reck is a bona fide tumor suppressor gene for MPNSTs in zebrafish. In addition, restoration of the RECK gene in human MPNST cells leads to growth inhibition suggesting that the reactivation of RECK could serve as a potential therapeutic strategy for MPNSTs.
Insights
The RECK gene acts as a tumor suppressor, inhibiting the growth of malignant peripheral nerve sheath tumors (MPNSTs). Restoring RECK in human MPNST cells offers a potential new therapeutic strategy for this aggressive cancer.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive sarcomas with poor prognoses.
- Chromosome 9p deletions are common in MPNSTs, but key cancer driver genes remain largely unidentified.
- RECK was previously proposed as a tumor suppressor candidate on chromosome 9p.
Purpose of the Study:
- To investigate the role of the RECK gene in MPNST tumorigenesis using zebrafish models.
- To examine the therapeutic potential of RECK gene restoration in human MPNST cell lines.
Main Methods:
- Utilized zebrafish genetic models with tp53 and ribosomal protein gene mutations.
- Assessed the impact of RECK gene restoration on human MPNST cell line growth.
Main Results:
- Provided the first genetic evidence that RECK functions as a bona fide tumor suppressor gene in MPNSTs within zebrafish.
- Demonstrated that RECK gene restoration inhibits growth in human MPNST cells.
Conclusions:
- RECK is a critical tumor suppressor gene for MPNST development.
- Reactivating RECK presents a promising therapeutic avenue for MPNST treatment.
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