The role of FilGAP, a Rac-specific Rho-GTPase-activating protein, in tumor progression and behavior of astrocytomas.

ABSTRACT: FilGAP, a Rac-specific Rho-GTPase-activating protein (GAP), acts as a mediator of Rho/ROCK-dependent amoeboid movement, and its knockdown results in Rac-driven mesenchymal morphology. Herein, we focused on the possible roles of FilGAP expression in astrocytomas. In clinical samples, FilGAP expression was significantly increased in grade (G) II astrocytomas as compared to normal astrocytes, but its expression strongly decreased in a grade-dependent manner, and was positively associated with isocitrate dehydrogenase 1 (IDH1) mutations and inversely to cytoplasmic Rac1. Patients with astrocytoma showing a high FilGAP score had favorable overall survival as compared to the low score patients. Multivariate Cox regression analysis also showed that a high FilGAP score was a significant and indepe

SUBMITTER: Hara A 

PROVIDER: S-EPMC5224849 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature