Nanoliposome functionalized colloidal GelMA inks for 3D printing of scaffolds with multiscale porosity - Université de Lorraine
Article Dans Une Revue Biofabrication Année : 2024

Nanoliposome functionalized colloidal GelMA inks for 3D printing of scaffolds with multiscale porosity

Mohamadmahdi Samandari
Evelyn Mollocana Lara
Yupeng Chen
Cyril Kahn
Ali Tamayol

Résumé

Abstract Bioprinting has enabled the creation of intricate scaffolds that replicate the physical, chemical, and structural characteristics of natural tissues. Recently, hydrogels have been used to fabricate such scaffolds for several biomedical applications and tissue engineering. However, the small pore size of conventional hydrogels impedes cellular migration into and remodeling of scaffolds, diminishing their regenerative potential. Porous scaffolds have been utilized for their improved diffusion of nutrients, dissolved oxygen, and waste products. However, traditional methods of generating porous structures require multiple processing steps, making them incompatible with bioprinting. Recently, we developed a method to generate multi-scale porous structures by foaming hydrogel precursors prior to printing to form colloidal bioinks. Here, to further improve the biological, mechanical, and physical properties, we functionalize colloidal bioinks with nanoliposomes (NL), one of the most promising methods for bioactive delivery. We assess the impact of the concentration of NL on the characteristics of bioinks made from gelatin methacryloyl (GelMA) and their resulting scaffolds. Anionic liposomes made from rapeseed lecithin of 110 nm were synthesized and found to be stable over several weeks. Increasing concentrations of NL decreased the zeta potential and increased the viscosity of foamed bioinks, improving their rheological properties for printing. Furthermore, the incorporation of NL allowed for precise adjustment of the macropore size and bulk mechanical properties without any chemical interaction or impact on photocrosslinking. The nanofunctionalized foam bioinks, composed exclusively of natural components, demonstrated significant antioxidant activity and were printed into multilayered scaffolds with high printability. The foam-embedded NL showed remarkable biocompatibility with myoblasts, and cell-laden bioinks were able to be successfully bioprinted. Due to their high biocompatibility, tunable mechanical properties, printability, and antioxidant behavior, the nanofunctionalized porous scaffolds have promise for a variety of biomedical applications, including those that require precise delivery of therapeutic substances and tissue engineering.
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Dates et versions

hal-04821963 , version 1 (05-12-2024)

Identifiants

Citer

Elaheh Omidvari, Mohamadmahdi Samandari, Delaram Ghanbariamin, Evelyn Mollocana Lara, Jacob Quint, et al.. Nanoliposome functionalized colloidal GelMA inks for 3D printing of scaffolds with multiscale porosity. Biofabrication, 2024, ⟨10.1088/1758-5090/ad9a01⟩. ⟨hal-04821963⟩
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