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Short-chain ceramides depress integrin cell surface expression and function in colorectal cancer cells
Samy A F Morad1, Lance C Bridges1, Alex D Almeida Larrea2
1Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC 27834, USA.
Cancer Letters
|April 6, 2016
Summary
Ceramides reduce cell surface integrins in colorectal cancer (CRC) cells, decreasing their adhesion and migration. This suggests ceramides may inhibit CRC metastasis.
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Colorectal cancer (CRC) is a highly metastatic disease, posing significant treatment challenges.
- Integrins are key receptors involved in cell migration and invasion, crucial for metastasis.
- Ceramides are known modulators of cancer suppression.
Purpose of the Study:
- To investigate the impact of ceramide on integrin expression and function in CRC cells.
- To determine if ceramide affects tumor cell motility and metastatic potential.
Main Methods:
- Human CRC cell lines (LoVo, HT-29, HCT-116) were treated with C6-ceramide.
- Cell surface integrin expression (β1, β4, αVβ6) was analyzed.
- Cellular adhesion and migration assays were performed.
Main Results:
- C6-ceramide dose-dependently decreased cell surface expression of β1, β4, and αVβ6 integrins.
- Integrin reduction correlated with diminished cellular adhesion (up to 50%) and migration (30-40%).
- Nano-formulated C6-ceramide showed potent efficacy.
Conclusions:
- Ceramides exhibit novel anti-metastatic effects by suppressing integrin expression and function in CRC.
- These findings suggest a potential therapeutic role for ceramides in combating CRC metastasis.
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