Glycerylphytate compounds with tunable ion affinity and osteogenic properties.

Area of Science:

• Biochemistry
• Biomaterials Science
• Cell Biology

Background:

• Phytic acid (PA) is a natural antioxidant with roles in biological processes.
• PA's potent ion chelation can reduce mineral availability, necessitating compounds with modulated binding.
• Interest exists in PA derivatives with beneficial properties and controllable ion binding.

Purpose of the Study:

• Synthesize and characterize hydroxylic PA derivatives (glycerylphytates, GPhy).
• Evaluate antioxidant and chelating properties of GPhy.
• Assess GPhy's cytocompatibility and osteogenic potential.

Main Methods:

• Synthesis of GPhy via condensation of PA with glycerol.
• Physicochemical characterization of synthesized derivatives.
• Antioxidant activity measured by ferrozine/FeCl2 assay.
• Chelating activity assessed with calcium ions.
• Cytocompatibility evaluated in human bone marrow mesenchymal stem cells (MSCs).
• Osteogenic properties confirmed by COL1A and ALPL gene expression analysis.

Main Results:

• Two GPhy derivatives were successfully synthesized.
• GPhy exhibited antioxidant properties and calcium-chelating activity, varying with glyceryl content.
• Hydroxylic modification modulated ion binding affinity and enhanced MSC cytocompatibility.
• GPhy derivatives demonstrated osteogenic properties, indicated by COL1A and ALPL expression.

Conclusions:

• GPhy compounds possess antioxidant and osteogenic properties with tunable ion binding.
• These derivatives show improved cytocompatibility compared to native phytic acid.
• GPhy represents a promising alternative for treating skeletal diseases where phytic acid is considered.