In mice, taking phytic acid orally reduces colon inflammation caused by a chemical irritant by regulating specific enzymes and maintaining the integrity of the intestinal lining, even when another...
Mechanism
Synthesis from 1 study
Phytic acid from food or supplements enters the gut and turns off genes that make destructive enzymes by activating a specific protein that silences them. This keeps the gut lining tightly sealed, preventing harmful substances from leaking through and causing inflammation.
Most probable mechanism
When phytic acid is taken by mouth, it enters the gut and directly activates a protein called HDAC3, which turns off genes that make destructive enzymes. These enzymes normally break down the glue that holds gut cells together, causing leaks. By turning off these genes, phytic acid keeps the gut lining sealed and prevents inflammation.
Orally administered phytic acid (InsP6) is absorbed in the intestinal lumen and reaches epithelial cells in sufficient concentration to bind directly to histone deacetylase 3 (HDAC3)
Phytic acid binding to HDAC3 facilitates recruitment of the DAD domain of the NCoR1/2 corepressor complex, activating HDAC3's enzymatic function independently of upstream kinases
Activated HDAC3 removes acetyl groups from histone H4 at lysine 16 (H4K16) at the promoter regions of matrix metalloproteinase (MMP) genes
Deacetylation of H4K16 suppresses transcription of MMP genes, reducing synthesis and secretion of MMP enzymes
Reduced MMP activity prevents degradation of tight junction proteins such as ZO-1 and occludin that maintain epithelial barrier integrity
Preserved tight junctions limit paracellular permeability, preventing luminal toxins and bacteria from triggering mucosal inflammation
Evidence from Studies
Supporting (1)
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Phytic acid (InsP6) activates HDAC3 epigenetic axis to maintain intestinal barrier function
Contradicting (0)
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