Chemotaxis of Central Nervous System-derived Tumor Cells within Controlled Microenvironments

Medulloblastoma (MB) is a malignant pediatric brain tumor known for its aggressive metastatic potential. Despite the well-documented migration of MB cells to other parts of the brain and spinal column, MB chemotaxis is poorly understood. Herein, we examined the in vitro migratory and cellular responses of MB-derived cells to external signaling of Epidermal Growth Factor (EGF), hepatocyte growth factor (HGF), platelet-derived growth factor (PDGF-BB), and the stromal cell-derived factors 1-alpha (SDF-1). Experiments utilized transwell assays and immunocytochemistry to identify receptor activation in MB migration, and used a microfluidic platform to examine directionality, trajectory, and gradient- dependence of motile cells. Data illustrates that MB-derived cells respond strongly to EGF in a dosage and gradient-dependent manner with increased EGF-R activation, and show that high EGF gradient fields cause an increased number of cells to migrate longer directed distances. Our results provide evidence that EGF and its receptor play an important role than previously documented in MB chemotactic migration and should be considered for developing migration-target therapies against MB metastasis.

Name thesis:degree_name

Master of Engineering (M.E.)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Biomedical Engineering

Year dc:date.available

2015

Author dc:creator

• Varela, Jennifer Rico

Contributors dc:contributor

• Maribel Vazquez
• Mitchell Schaffler

• Microfluidices
• Gradients
• Pediatric Cancer
• Epidermal Growth Factor (EGF)
• Biomedical Engineering and Bioengineering
• Engineering

Repository record dc:identifier

https://academicworks.cuny.edu/cc_etds_theses/698

OAI identifier oai:identifier

oai:academicworks.cuny.edu:cc_etds_theses-1698