FOXC2 promotes colorectal cancer metastasis by directly targeting MET

Area of Science:

• Oncology
• Molecular Biology
• Cancer Metastasis Research

Background:

• Colorectal cancer (CRC) metastasis is a primary cause of cancer-related mortality.
• The molecular mechanisms underlying CRC invasion and distant metastasis remain incompletely understood.
• Identifying key regulators of CRC metastasis is crucial for developing targeted therapies.

Purpose of the Study:

• To investigate the role of Forkhead box protein C2 (FOXC2) in colorectal cancer (CRC) invasion and metastasis.
• To elucidate the molecular mechanisms by which FOXC2 promotes CRC metastasis.
• To evaluate FOXC2 as a potential therapeutic target for CRC metastasis.

Main Methods:

• Correlation analysis of FOXC2 expression and TNM staging in CRC patients.
• In vitro invasion assays and orthotopic mouse models to assess FOXC2's effect on metastasis.
• Microarray analysis, luciferase reporter assays, and chromatin immunoprecipitation to identify molecular targets.
• Assessment of MET signaling pathway activation and the effect of MET inhibition.

Main Results:

• High FOXC2 expression and nuclear localization correlate significantly with advanced TNM stages in CRC.
• FOXC2 enhances CRC cell invasion in vitro and promotes local invasion and distant metastasis in vivo.
• FOXC2 directly upregulates MET transcription, activating the HGF-MET signaling pathway.
• MET inhibition attenuates the metastatic potential of FOXC2-overexpressing CRC cells.
• FOXC2 and MET expression are positively correlated in CRC tissues.

Conclusions:

• FOXC2 plays a critical role in promoting CRC metastasis by inducing MET expression and activating the HGF-MET pathway.
• FOXC2 acts as a direct transcriptional regulator of MET.
• FOXC2 represents a promising therapeutic target for preventing or reducing metastasis in colorectal cancer.