Background: Netrins and their receptors play a role in cancer; however, the molecular mechanisms are not well understood. Results: Netrin-1 promotes glioblastoma cell invasion and angiogenesis, and these activities are abrogated by cathepsin B inhibitor. Conclusion: Netrin-1 plays a cathepsin B-dependent dual role in glioblastoma progression by promoting both invasiveness and angiogenesis. Significance: Novel netrin-1 mechanisms include activation of RhoA, cathepsin B, and cAMP-response element-binding protein.
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