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Research Unveils How Fiber Byproducts Influence Gene Expression that May Have Anti-Cancer Actions - Video

Published On 2025-01-13T08:30:00+05:30  |  Updated On 13 Jan 2025 8:30 AM IST
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Overview

A new study published in Nature Metabolism identified the direct epigenetic effects of two common byproducts of fiber digestion and found that some of the alterations in gene expression had anti-cancer actions.
When we eat fiber, the gut microbiome produces short-chain fatty acids. These compounds are more than just an energy source for us: They have long been suspected to indirectly affect gene function. The researchers traced how the two most common short-chain fatty acids in our gut, propionate and butyrate, altered gene expression in healthy human cells, in treated and untreated human colon cancer cells, and in mouse intestines. They found direct epigenetic changes at specific genes that regulate cell proliferation and differentiation, along with apoptosis, or pre-programmed cell death processes — all of which are important for disrupting or controlling the unchecked cell growth that underlies cancer.
“We found a direct link between eating fiber and modulation of gene function that has anti-cancer effects, and we think this is likely a global mechanism because the short-chain fatty acids that result from fiber digestion can travel all over the body,” said Michael Snyder, PhD, Stanford W. Ascherman, MD, FACS Professor in Genetics. “It is generally the case that people’s diet is very fiber poor, and that means their microbiome is not being fed properly and cannot make as many short-chain fatty acids as it should. This is not doing our health any favors.”
“By identifying the gene targets of these important molecules we can understand how fiber exerts its beneficial effects and what goes wrong during cancer,” Snyder added.
Reference: Nshanian, M., Gruber, J.J., Geller, B.S. et al. Short-chain fatty acid metabolites propionate and butyrate are unique epigenetic regulatory elements linking diet, metabolism and gene expression. Nat Metab (2025). https://doi.org/10.1038/s42255-024-01191-9

Speakers

Dr. Bhumika Maikhuri

BDS, MDS

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