Related Experiment Video
Updated: Jun 11, 2025
Drug Screening of Primary Patient Derived Tumor Xenografts in Zebrafish
Published on: April 10, 2020
Development of an orthotopic medulloblastoma zebrafish model for rapid drug testing
Niek van Bree1, Ann-Sophie Oppelt1, Susanne Lindström2
1Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Stockholm, Sweden.
Background:
Medulloblastoma (MB) is one of the most common malignant brain tumors in children. Current preclinical in vivo model systems for MB have increased our understanding of molecular mechanisms regulating MB development. However, they may not be suitable for large-scale studies. The aim of this study was to investigate if a zebrafish-based xenograft model can recapitulate MB growth and enable rapid drug testing.
Methods:
Nine different MB cell lines or patient-derived cells were transplanted into blastula-stage zebrafish embryos. Tumor development and migration were then monitored using live imaging. RNA sequencing was performed to investigate transcriptome changes after conditioning cells in a neural stem cell-like medium. Furthermore, drug treatments were tested in a 96-well format.
Results:
We demonstrate here that transplantation of MB cells into the blastula stage of zebrafish embryos leads to orthotopic tumor growth that can be observed within 24 h after transplantation. Importantly, the homing of transplanted cells to the hindbrain region and the aggressiveness of tumor growth are enhanced by pre-culturing cells in a neural stem cell-like medium. The change in culture conditions rewires the transcriptome toward a more migratory and neuronal phenotype, including the expression of guidance molecules SEMA3A and EFNB1, both of which correlate with lower overall survival in MB patients. Furthermore, we highlight that the orthotopic zebrafish MB model has the potential to be used for rapid drug testing.
Conclusions:
Blastula-stage zebrafish MB xenografts present an alternative to current MB mouse xenograft models, enabling quick evaluation of tumor cell growth, neurotropism, and drug efficacy.
Insights
A novel zebrafish xenograft model allows rapid evaluation of medulloblastoma (MB) growth and drug efficacy. This model recapitulates MB development and migration, offering a scalable alternative to current preclinical systems.
Area of Science:
- * Oncology
- * Developmental Biology
- * Zebrafish Models
Background:
- * Medulloblastoma (MB) is a prevalent pediatric brain tumor.
- * Current in vivo models are limited for large-scale studies.
- * Need for efficient preclinical models for MB research.
Purpose of the Study:
- * To establish and validate a zebrafish xenograft model for medulloblastoma (MB).
- * To assess MB cell growth, migration, and neurotropism in zebrafish.
- * To evaluate the potential for rapid drug screening using this model.
Main Methods:
- * Xenotransplantation of nine MB cell lines/patient-derived cells into zebrafish embryos.
- * Live imaging to monitor tumor development and migration.
- * RNA sequencing to analyze transcriptome changes and drug efficacy testing in a 96-well format.
Main Results:
- * Rapid orthotopic MB tumor growth observed within 24 hours post-transplantation.
- * Neural stem cell-like medium enhanced cell homing, migration, and tumor aggressiveness.
- * Transcriptome rewiring revealed migratory/neuronal phenotypes and identified SEMA3A/EFNB1 as survival-correlated markers.
- * Demonstrated potential for high-throughput drug screening.
Conclusions:
- * Zebrafish MB xenografts offer a viable alternative to mouse models.
- * Enables rapid assessment of tumor cell growth, neurotropism, and drug efficacy.
- * Provides a scalable platform for medulloblastoma research and therapeutic development.
