Phytic acid triggers a molecular process in intestinal cells that reduces the activity of enzymes involved in breaking down the intestinal barrier, leading to a stronger barrier function.
Mechanism
Synthesis from 1 study
A natural compound from plants turns on a specific enzyme in gut cells that silences genes responsible for breaking down the seals between cells. When these seals stay intact, the gut lining stays closed and prevents harmful substances from leaking into the body.
Most probable mechanism
A molecule found in plant foods binds to a cellular enzyme, turning it on so it can remove a chemical tag from DNA-related proteins. This change shuts down the production of enzymes that break apart the seals between gut cells. With those seals intact, the gut lining stays closed, preventing unwanted substances from leaking through.
Phytic acid binds directly to histone deacetylase 3 (HDAC3) bound to chromatin in intestinal epithelial cells.
This binding enables HDAC3 to recruit the DAD domain of the NCoR1/2 corepressor complex, activating its enzymatic function.
Activated HDAC3 removes acetyl groups from histone H4 at lysine 16 at the promoter regions of matrix metalloproteinase genes.
Deacetylation of histone H4K16 reduces transcription of matrix metalloproteinase genes, including MMP1, MMP3, MMP10, and MMP13.
Reduced levels of matrix metalloproteinase enzymes prevent degradation of tight junction proteins such as ZO-1, occludin, and claudin-1.
Intact tight junctions maintain low paracellular permeability, preserving the physical barrier of the intestinal epithelium.
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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