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Article Publish Status: FREE
Abstract Title:

Butyrate decreases its own oxidation in colorectal cancer cells through inhibition of histone deacetylases.

Abstract Source:

Oncotarget. 2018 Jun 5 ;9(43):27280-27292. Epub 2018 Jun 5. PMID: 29930765

Abstract Author(s):

Anna Han, Natalie Bennett, Bettaieb Ahmed, Jay Whelan, Dallas R Donohoe

Article Affiliation:

Anna Han

Abstract:

Colorectal cancer is characterized by an increase in the utilization of glucose and a diminishment in the oxidation of butyrate, which is a short chain fatty acid. In colorectal cancer cells, butyrate inhibits histone deacetylases to increase the expression of genes that slow the cell cycle and induce apoptosis. Understanding the mechanisms that contribute to the metabolic shift away from butyrate oxidation in cancer cells is important in in understanding the beneficial effects of the molecule toward colorectal cancer. Here, we demonstrate that butyrate decreased its own oxidation in cancerous colonocytes. Butyrate lowered the expression of short chain acyl-CoA dehydrogenase, an enzyme that mediates the oxidation of short-chain fatty acids. Butyrate does not alter short chain acyl-CoA dehydrogenase levels in non-cancerous colonocytes. Trichostatin A, a structurally unrelated inhibitor of histone deacetylases, and propionate also decreased the level of short chain acyl-CoA dehydrogenase, which alluded to inhibition of histone deacetylases as a part of the mechanism. Knockdown of histone deacetylase isoform 1, but not isoform 2 or 3, inhibited the ability of butyrate to decrease short chain acyl-CoA dehydrogenase expression. This work identifies a mechanism by which butyrate selective targets colorectal cancer cells to reduce its own metabolism.

Study Type : In Vitro Study

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Sayer Ji
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