Inositol Hexaphosphate Activity in Cancer Cell Proliferation

Inositol hexaphosphate, also known as phytate, is a naturally occurring polyphosphorylated carbohydrate abundant in whole grains, legumes and seeds. It has emerged as a multifaceted modulator of cancer cell proliferation, acting through direct and indirect mechanisms. InsP6 can arrest the cell cycle at key checkpoints, notably G1/S and G2/M, by upregulating cyclin-dependent kinase inhibitors. It promotes apoptotic pathways via activation of caspases and mitochondrial permeabilisation. At the signalling level, InsP6 disrupts the phosphoinositide 3-kinase/AKT/mTOR cascade and downstream mitogen-activated protein kinase pathways, attenuating growth factor-driven proliferation. Its metal-chelating properties diminish oxidative stress, reducing DNA damage and oncogenic transformation. InsP6 also modulates receptor–ligand interactions, inflammatory mediators and cytoskeletal architecture to impair migration and invasion. Preclinical studies in colorectal, prostate and breast tumour models have shown that InsP6, alone or combined with inositol, enhances chemotherapy efficacy, suppresses metastasis and improves quality of life. With a well-established safety profile, ongoing research centres on optimising formulation, dosing and delivery to translate these anticancer effects into clinical practice.

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Inositol Hexaphosphate Activity in Cancer Cell Proliferation publication trend

The graph below shows the total number of articles in inositol hexaphosphate activity in cancer cell proliferation across all publications each year (not limited to Nature Index journals).

Technical terms

Inositol hexaphosphate (InsP6): A polyphosphorylated derivative of myo-inositol found in plant seeds, noted for antioxidant and antiproliferative activities.

Apoptosis: A form of programmed cell death characterised by caspase activation, DNA fragmentation and cellular dismantling.

Cell cycle arrest: The halting of cell division at specific checkpoints through regulation of cyclins and cyclin-dependent kinase inhibitors.

AKT/mTOR pathway: A central intracellular signalling cascade that governs cell growth, proliferation and survival in response to extracellular cues.

Metal chelation: The binding of metal ions by a molecule, which can inhibit metal-catalysed oxidative processes and downstream DNA damage.

References

1. Phytate Intake, Health and Disease: “Let Thy Food Be Thy Medicine and Medicine Be Thy Food”. Antioxidants (2023).
2. Cellular and Molecular Activities of IP6 in Disease Prevention and Therapy. Biomolecules (2023).
3. Broad Spectrum Anticancer Activity of Myo‐Inositol and Inositol Hexakisphosphate. International Journal of Endocrinology (2016).
4. Efficacy of IP6 + inositol in the treatment of breast cancer patients receiving chemotherapy: prospective, randomized, pilot clinical study. Journal of Experimental & Clinical Cancer Research (2010).
5. Inositol Hexaphosphate and Inositol Inhibit Colorectal Cancer Metastasis to the Liver in BALB/c Mice. Nutrients (2016).
6. Inositol Hexaphosphate Inhibits Tumor Growth, Vascularity, and Metabolism in TRAMP Mice: A Multiparametric Magnetic Resonance Study. Cancer Prevention Research (2013).
7. Inositol Hexaphosphate Inhibits Proliferation and Induces Apoptosis of Colon Cancer Cells by Suppressing the AKT/mTOR Signaling Pathway. Molecules (2017).
8. Inositol hexaphosphate modulates the behavior of macrophages through alteration of gene expression involved in pathways of pro‐ and anti‐inflammatory responses, and resolution of inflammation pathways. Food Science & Nutrition (2021).