Coronin 3 Promotes the Development of Oncogenic Properties in Glioma Through the Wnt/β-Catenin Signaling Pathway.

Purpose: Evidence indicates that the actin-binding protein Coronin 3, which is aberrantly expressed in various cancers, is associated with cancer development and progression. However, little is known about the role of Coronin 3 in glioma tumorigenesis. Here, we aimed to explore the biological function and regulatory mechanism of Coronin 3 in glioblastoma (GBM). Materials and Methods: Coronin 3 level in human GBM clinical samples and cell lines was investigated. The shRNA knockdown strategy was used to assess the tumor characteristics of GBM cell lines. The role of beta-catenin in Coronin 3-mediated oncogenic phenotypes was evaluated. Results: Coronin 3 was found to be highly upregulated in glioma cell lines. Furthermore, knockdown of Coronin 3 significantly inhibited the growth of glioma cells both in vivo and in vitro and suppressed the expression of Wnt/beta-catenin pathway genes, including beta-catenin, Cyclin D1, and c-Myc. Moreover, we demonstrated that Coronin 3 regulates the expression of beta-catenin in glioma. Our results revealed that Coronin 3-stimulated tumor growth was beta-catenin-dependent. Conclusion: Our study reveals a new molecular mechanism of Coronin 3 in promoting glioma growth and development through regulating the Wnt/beta-catenin signaling pathway.