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Transition metal/dECM hydrogel complexation for large-sized cell spheroid.
Hoe Do Jeong1, Jong Seob Choi1
1Division of Advanced Materials Engineering, Kongju National University, South Korea.
Summary
This study enhances decellularized extracellular matrix (dECM) hydrogels using potassium tetrachloroplatinate(II) for improved mechanical stability and biocompatibility in tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Decellularized extracellular matrix (dECM) hydrogels offer tissue-specific properties for tissue engineering.
- Limited in vitro mechanical stability of dECM hydrogels restricts their practical use.
Purpose of the Study:
- To engineer enhanced dECM hydrogels with improved mechanical stability and functionality.
- To investigate the effect of potassium tetrachloroplatinate(II) (K2PtCl4) on dECM hydrogel properties.
Main Methods:
- Porcine heart-derived dECM hydrogels were reinforced with K2PtCl4.
- Rheological analysis, XPS, FT-IR, and SEM were used to characterize hydrogel properties.
- Biocompatibility and cell-spheroid functionality within the hydrogels were assessed.
Main Results:
- K2PtCl4 incorporation accelerated gelation and enhanced hydrogel structural stability via Pt-dECM coordination bonding.
- Tunable viscoelastic properties were observed with concentration-dependent improvements in storage modulus.
- Pt-dECM hydrogels supported stable cell spheroids with high viability and E-cadherin expression.
Conclusions:
- Transition metal complexation effectively enhances the mechanical and biological performance of dECM hydrogels.
- Engineered Pt-dECM hydrogels provide a versatile platform for 3D cell culture and regenerative medicine applications.
