3D Hybrid Nanofiber Aerogels Combining with Nanoparticles Made of a Biocleavable and Targeting Polycation and MiR-26a for Bone Repair
Overview
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The healing of large bone defects represents a clinical challenge, often requiring some form of grafting. Three-dimensional (3D) nanofiber aerogels could be a promising bone graft due to their biomimetic morphology and controlled porous structures and composition. miR-26a has been reported to induce the differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) and facilitate bone formation. Introducing miR-26a with a suitable polymeric vector targeting BMSCs could improve and enhance the functions of 3D nanofiber aerogels for bone regeneration. Herein, we first developed the comb-shaped polycation (HA-SS-PGEA) carrying a targeting component, biocleavable groups and short ethanolamine (EA)-decorated poly(glycidyl methacrylate) (PGMA) (abbreviated as PGEA) arms as miR-26a delivery vector. We then assessed the cytotoxicity and transfection efficiency of this polycation and cellular response to miR-26a-incorporated nanoparticles (NPs) . HA-SS-PGEA exhibited a stronger ability to transport miR-26a and exert its functions than the gold standard polyethyleneimine (PEI) and low-molecular-weight linear PGEA. We finally examined the efficacy of HA-SS-PGEA/miR-26a NPs loaded 3D hybrid nanofiber aerogels showing a positive effect on the cranial bone defect healing. Together, the combination of 3D nanofiber aerogels and functional NPs consisting of a biodegradable and targeting polycation and therapeutic miRNA could be a promising approach for bone regeneration.
Recent Strategies and Advances in Hydrogel-Based Delivery Platforms for Bone Regeneration.
Wang X, Zeng J, Gan D, Ling K, He M, Li J Nanomicro Lett. 2024; 17(1):73.
PMID: 39601916 PMC: 11602938. DOI: 10.1007/s40820-024-01557-4.
Shahriar S, McCarthy A, Andrabi S, Su Y, Polavoram N, John J Nat Commun. 2024; 15(1):1080.
PMID: 38316777 PMC: 10844217. DOI: 10.1038/s41467-024-45458-x.
Chen W, Wu X, Hu J, Liu X, Guo Z, Wu J Cardiovasc Diabetol. 2024; 23(1):21.
PMID: 38195542 PMC: 10777520. DOI: 10.1186/s12933-024-02119-z.
New dimensions of electrospun nanofiber material designs for biotechnological uses.
Kamaraj M, Moghimi N, Chen J, Morales R, Chen S, Khademhosseini A Trends Biotechnol. 2023; 42(5):631-647.
PMID: 38158307 PMC: 11065627. DOI: 10.1016/j.tibtech.2023.11.008.
Kang J, Li Y, Qin Y, Huang Z, Wu Y, Sun L Nanomicro Lett. 2023; 16(1):18.
PMID: 37975889 PMC: 10656386. DOI: 10.1007/s40820-023-01228-w.