Efecto de la inmunoterapia con el bacilo de Calmette-Guérin sobre la capacidad migratoria e invasiva del cáncer escamoso de cabeza y cuello en un modelo in vitro 3D

Head and neck squamous cell carcinoma is characterized by local invasion and a propensity for dissemination to cervical lymph nodes and recurrence. Cancer cell invasion and metastasis represent complex, multistep process. The remodelling of ECM by MMPs is one of the most crucial steps for cancer progression. MMP-2 and MMP-9, are over expressed in head and neck squamous cell carcinoma where they act to degrade the basement membrane thus promoting tumor invasion and metastasis. Bacillus Calmette-Guérin (BCG) has been used as an immunomodulator in treating some cancers with good results. The purpose of this study is to determine the effect of BCG immune activation in migration and metastasis using in vitro 3 D cultures pharyngeal tumor cells were co-cultured with previously isolated peripheral blood mononuclear cells, in experimental groups or cultured alone. MMPs and p53 was determinate by Western blot and the invasion-migration using commercial assays. Our results showed decreasing expression of MMPs, p53 and significantly reduced migration in BGC group.