Analysis of Migration and Invasion in Ewing Sarcoma.

Metastasis is a complex, well-orchestrated process, which includes migration from the primary tumor and invasion into secondary locations as main features. In Ewing sarcoma, metastasis is the main determinant of malignancy, with ~30% of patients presenting with metastatic disease at diagnosis. Therefore, analyzing migration and invasion in different experimental settings in vitro is key to understanding this disease. Among the variety of possible techniques to study migration, this chapter describes the methods of wound healing (migration in 2D) and transwell (migration through a porous membrane in response to a given stimulus). Additionally, this chapter includes a variation of the transwell protocol that allows the analysis of cell invasion through a gel matrix in response to a stimulus.