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Updated: Jun 28, 2025
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Zebrafish Model of Neuroblastoma Metastasis
Published on: March 14, 2021
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Differential RNA Expression Between Metastatic and Primary Neuroblastoma Cells
William G Lee1, Grace E Asuelime2, Matthew B T Asuelime-Smith2
1Division of Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, California; Division of Pediatric Surgery, Cedars-Sinai Medical Center, Los Angeles, California.
The Journal of Surgical Research
|April 17, 2024
Summary
Metastatic neuroblastoma (NB) cells show distinct gene expression compared to primary tumors. This study identified key pathways involved in cell cycle regulation and proliferation, offering potential therapeutic targets for high-risk NB.
Area of Science:
- Oncology
- Genomics
- Pediatric Malignancies
Background:
- Neuroblastoma (NB) is the most common pediatric extra-cranial cancer.
- High-risk NB survival is poor due to recurrent metastatic disease.
- Understanding gene expression differences between primary and metastatic NB is crucial.
Purpose of the Study:
- To investigate differential gene expression between primary and metastatic neuroblastoma cells.
- To identify molecular pathways associated with neuroblastoma metastasis.
- To hypothesize differences in gene expression profiles between metastatic and primary/cultured NB cells.
Main Methods:
- Orthotopic xenografts of human NB cell lines (NGP, CHLA255, SH-SY5Y) were established in immunodeficient mice.
- NB cells were isolated from primary tumors and metastatic sites (bone marrow, liver).
- RNA sequencing, gene set analysis, and pathway analysis were performed.
Main Results:
- 266 differentially expressed genes were identified in metastatic NB cells.
- KCNK1 was the top upregulated gene; PDE7B and NEBL were top downregulated genes.
- Metastatic cells showed upregulated pathways in ion transport, cell signaling, and proliferation, and downregulated pathways in DNA synthesis, transcription, and metabolism.
Conclusions:
- Metastatic NB cells exhibit upregulated processes in cell cycle regulation, proliferation, migration, and invasion.
- These findings highlight potential therapeutic targets to inhibit metastatic NB.
- Further studies will validate genomic alterations and target identified pathways.
