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Article Abstract
Aims: Nanoparticle-mediated drug delivery systems are being investigated for the controlled release of drugs to treat neurodegenerative diseases (ND). We aimed to investigate the effects of poly(lactic-co-glycolic acid) nanoparticles (PLGA-NPs) containing different growth factors (GFs) on rat brain-derived neural stem cells (NSCs) in vitro differentiation, providing insights that may contribute to future approaches for treating Parkinson's disease.
Methods: Three different PLGA-NPs loaded with Brain-Derived Neurotrophic Factor (BDNF), Glial-Derived Neurotrophic Factor (GDNF), and Transforming Growth Factor beta 3 (TGF-β3) were developed and characterized in terms of size, zeta potential, encapsulation efficiency, and release profile. These NPs were used to differentiate NSCs into dopaminergic neurons in vitro. Additionally, the transition of transferrin (TRF)-conjugated PLGA-COOH-NPs across an in vitro blood-brain barrier (BBB) model was investigated.
Results: The average sizes of BDNF, GDNF, and TGF-ß3 loaded PLGA-NPs were measured to be 217.17 ± 1.37, 227.37 ± 5.39, and 220.57 ± 10.10 nm, respectively. Besides, SEM imaging revealed that the particles had a homogeneous size distribution and smooth surface morphology. Microtubule-associated protein 2 (Map2) and tyrosine hydroxylase (TH), two dopaminergic neuronal markers, were found in cells with neuron-like morphology that were produced through in vitro differentiation. The cellular uptake of PLGA-NPs loaded with Coumarin-6 was determined by using confocal imaging and flow cytometry. It was demonstrated that TRF-conjugated NPs were specifically targeted and taken up into NSCs in the in vitro BBB model.
Conclusion: It is concluded that BDNF-PLGA-NPs, GDNF-PLGA-NPs, and TGF-ß3-PLGA-NPs are promising brain drug delivery carriers for NSC inducers, which could be useful in developing strategies for Parkinson's disease management, particularly when targeted with TRF.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12409068 | PMC |
| http://dx.doi.org/10.1111/cns.70576 | DOI Listing |
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