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    • High Internal Phase Emulsion-Templated Hydrophilic Polyphosphoester Scaffolds: Tailoring the Porosity and Degradation for Soft Tissue Engineering.

    Pascal Boucq,Bernard Ucakar, Floriane Debuisson,Raphael Riva,Anne des Rieux,Christine Jérôme,Antoine Debuigne

    Biomacromolecules（2025）

    Cited 0|Views0
    Abstract
    Synthetic porous scaffolds are key elements in tissue engineering (TE), requiring controlled porosity for cell colonization, along with a degradation rate aligned with tissue growth. While biodegradable polyester scaffolds are widely used in TE, they are primarily hydrophobic and suited for semirigid to hard tissue applications. This work broadens the scope of TE by introducing porous scaffolds made of polyphosphoesters (PPEs), degradable polymers with adaptable physicochemical properties. PPE hydrogels were shaped into 3D scaffolds using an emulsion templating method, yielding hydrophilic matrices with controlled porosity and tunable Young's moduli for soft tissues. Degradation assays at physiological pH confirmed the scaffolds' biodegradability. Cytotoxicity tests with PPE scaffolds showed excellent cell viability, while RGD functionalization further enhanced cell adhesion. Scaffold colonization, low inflammation, and angiogenesis were demonstrated in vivo through subcutaneous implantation of the scaffolds in mice and histological analysis. These results highlight PPE-based scaffolds as promising candidates for regenerative medicine.
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