1. LBO-EMSC Hydrogel Serves a Dual Function in Spinal Cord Injury Restoration via the PI3K-Akt-mTOR Pathway.
- Author
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Yu Q, Liao M, Sun C, Zhang Q, Deng W, Cao X, Wang Q, Omari-Siaw E, Bi S, Zhang Z, Yu J, and Xu X
- Subjects
- Animals, Axons drug effects, Axons metabolism, Cell Line, Fibrin chemistry, Humans, Hydrogels chemistry, Inflammation drug therapy, Inflammation metabolism, Lycium chemistry, Male, Mesenchymal Stem Cells metabolism, Microglia drug effects, Microglia metabolism, Nasal Mucosa cytology, Phosphatidylinositol 3-Kinases metabolism, Polysaccharides chemistry, Proto-Oncogene Proteins c-akt metabolism, Rats, Sprague-Dawley, Receptors, Tumor Necrosis Factor, Type II metabolism, Recovery of Function drug effects, Remyelination drug effects, Signal Transduction drug effects, Spinal Cord Injuries metabolism, TOR Serine-Threonine Kinases metabolism, Rats, Fibrin pharmacology, Hydrogels pharmacology, Mesenchymal Stem Cells drug effects, Polysaccharides pharmacology, Spinal Cord Injuries drug therapy, Tissue Scaffolds chemistry
- Abstract
It is critical to obtain an anti-inflammatory microenvironment when curing spinal cord injury (SCI). On the basis of this, we prepared Lycium barbarum oligosaccharide (LBO)-nasal mucosa-derived mesenchymal stem cells (EMSCs) fibronectin hydrogel for SCI restoration via inflammatory license effect and M2 polarization of microglias. LBO exhibited remarkable M2 polarization potential for microglia. However, EMSCs primed by LBO generated enhanced paracrine effects through the inflammatory license-like process. The observed dual function is likely based on the TNFR2 pathway. In addition, LBO-EMSC hydrogel possesses a synergistic effect on M2 polarization of microglia through the PI3K-Akt-mTOR signaling pathway. The obtained findings provide a simple approach for MSC-based therapies for SCI and shed more light on the role of TNFR2 on bidirectional regulation in tissue regeneration.
- Published
- 2021
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