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• W3100429803 startingPage "111739" @default.
• W3100429803 abstract "The cell-extracellular matrix (ECM) interactions are known to have a strong impact on cell behaviors in neural tissues. Due to complex physiology system and limited regenerative capacity of nervous system, neural tissue engineering has attracted attention as a promising strategy. In this study, we designed a hydrogel loaded by poly (lactic-co-glycolic acid) (PLGA) microspheres containing carbon nanotubes (CNT) and the biochemical differentiation factors, as a scaffold, in order to replicate the neural niche for stem cell growth (and/or differentiation). Different formulations from Hyaluronic acid (H), Poloxamer (P), Ethoxy-silane-capped poloxamer (PE), and cross-linked Alginate (Alg) were utilized as an in situ gel structure matrix to mirror the mechanical properties of the ECM of CNS. Subsequently, conductivity, surface morphology, size of microspheres, and CNT dispersion in microsphere were measured using two probes electrical conductometer, scanning electron microscopy (SEM), dynamic light scattering (DLS), and Raman spectroscopy, respectively. According to SEM and fluorescent microscopy images, CNTs increased the porosity of polymeric structure, which, in turn, facilitated the adhesion of stem cells on the surface of microspheres compared with control. Microstructure and rheological behaviors of different gel compositions were investigated using SEM and parallel-plate oscillatory rheometer, respectively. The MTT assay showed the toxicity profile of hydrogels was appropriate for cell transplantation. The confocal images illustrated the 3D platform of P15%H10% and P20%H5% gel formulations containing the PLGA-CNT microspheres, which allows the proliferation of neural stem cells (NSCs) derived from MSC. The results of real-time PCR and immunocytochemistry showed neuronal differentiation capacity of cultured NSCs derived from MSC in the alginate gel that contained PLGA-CNT microspheres as well as other control groups. The dispersion of the CNT-PLGA microspheres, covered by NSCs, into alginate gel in the presence of induction factors was found to notably enhance the expression of Sox2-SYP and β-Tubulin III neuronal markers." @default.
• W3100429803 created "2020-11-23" @default.
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• W3100429803 date "2021-01-01" @default.
• W3100429803 modified "2023-09-25" @default.
• W3100429803 title "An in situ hydrogel-forming scaffold loaded by PLGA microspheres containing carbon nanotube as a suitable niche for neural differentiation" @default.
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• W3100429803 doi "https://doi.org/10.1016/j.msec.2020.111739" @default.
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