Abstract

Abstract The FOXC2 transcription factor has emerged as a tumor-promoting oncogene in many cancer types. We have recently investigated the impact of Foxc2 gene disruption and FOXC2 overexpression in melanoma on tumor cell adhesion to extracellular matrix (ECM) proteins and lymphatic endothelial cells. We show that melanoma-associated FOXC2 is a critical regulator of tumor cell adhesion to the ECM proteins fibrinogen and fibronectin as well as to lymphatic endothelial cells. These effects on tumor cell adhesion correlate with FOXC2-mediated regulation of the integrins ITGA5 and ITGA9. As changes in cellular adhesion frequently accompany tumor cell transformation and progression, our data suggest that FOXC2 and genes regulated by this transcription factor may play key roles in promoting melanoma invasion and metastasis. Citation Format: Coleman E. Johnson, Corey J. Williams, Kristian M. Hargadon. FOXC2-associated regulation of melanoma cell adhesion to the extracellular matrix and lymphatic endothelial cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2617.

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