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LIN28B Promotes Cancer Cell Dissemination and Angiogenesis
Diana Corallo1, Sara Menegazzo1,2, Marcella Pantile1
1Laboratory of Target Discovery and Biology of Neuroblastoma, Pediatric Hematology, Oncology and Hematopoietic Cell&Gene Therapy Research Area, Institute of Pediatric Research, Fondazione Città della Speranza, Padua, 35127, Italy.
LIN28B overexpression promotes neuroblastoma metastasis by enhancing cell adhesion, migration, and angiogenesis. This protein hub drives aggressive phenotypes by influencing endothelial cells and extracellular matrix interactions.
Area of Science:
- Pediatric Oncology
- Molecular Biology
- Cancer Metastasis
Background:
- Neuroblastoma is a challenging pediatric cancer with high metastasis rates.
- High-risk neuroblastoma patients have poor prognoses (<40% survival).
- LIN28B overexpression is linked to high-risk neuroblastoma and widespread metastases.
Purpose of the Study:
- Investigate the impact of induced LIN28B (iLIN28B) expression on neuroblastoma metastatic processes.
- Analyze effects on anchorage, migration, invasion, and angiogenesis.
- Elucidate the role of LIN28B in aggressive neuroblastoma phenotypes.
Main Methods:
- Studied iLIN28B expression in neuroblastoma cells.
- Assessed substrate adherence, migration, and extracellular matrix degradation.
- Examined endothelial cell response to tumor-derived IGF2.
- Evaluated LIN28B-induced angiogenesis in vitro and in vivo.
Main Results:
- iLIN28B cells exhibited substrate-selective adherence and coating-dependent migration.
- Cells demonstrated context-guided extracellular matrix degradation.
- Tumor-derived IGF2 enhanced endothelial cell motility and proliferation.
- IGF2 inhibition impaired LIN28B-induced angiogenesis.
Conclusions:
- LIN28B acts as a central hub promoting pre-metastatic processes in neuroblastoma.
- LIN28B influences aggressive phenotypes through interactions with endothelial cells and the extracellular matrix.
- Targeting LIN28B may offer therapeutic strategies for high-risk neuroblastoma.
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