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Fiber-derived butyrate and the prevention of colon cancer
C A Hassig1, J K Tong, S L Schreiber
1Howard Hughes Medical Institute, Harvard University, Department of Chemistry, Cambridge, MA 02138, USA. hassig@slsiris. harvard.edu
Chemistry & Biology
|January 31, 1998
Abstract:
Inhibition of the enzyme histone deacetylase by butyrate results in the direct transcriptional upregulation of the cyclin-dependent kinase inhibitor p21/Cip1/WAF1. We discuss a small-molecule-mediated signaling pathway to explain the suspected anti-colon-cancer properties of fiber-derived butyrate.
Insights
Butyrate, a fiber-derived compound, inhibits histone deacetylase, upregulating the p21 protein. This pathway may explain butyrate's anti-colon-cancer effects.
Area of Science:
- Molecular Biology
- Cancer Research
- Biochemistry
Background:
- Butyrate is a short-chain fatty acid produced by gut bacteria.
- Histone deacetylase (HDAC) inhibitors are investigated for cancer therapy.
- p21/Cip1/WAF1 is a key cell cycle regulator and tumor suppressor.
Purpose of the Study:
- To elucidate the molecular mechanism underlying butyrate's anti-colon-cancer activity.
- To investigate the role of histone deacetylase inhibition in p21/Cip1/WAF1 transcriptional upregulation.
Main Methods:
- Enzyme inhibition assays.
- Transcriptional analysis.
- Cellular signaling pathway elucidation.
Main Results:
- Butyrate directly inhibits histone deacetylase activity.
- This inhibition leads to the transcriptional upregulation of p21/Cip1/WAF1.
- A small-molecule-mediated signaling pathway is proposed.
Conclusions:
- Fiber-derived butyrate exhibits anti-colon-cancer properties through HDAC inhibition.
- Upregulation of p21/Cip1/WAF1 is a key mechanism.
- Further research into this pathway could yield novel therapeutic strategies.