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Direct Conjugation of Retinoic Acid With Gold Nanoparticles to Improve Neural Differentiation of Human Adipose Stem Cells Publisher Pubmed



Asgari V1 ; Landaraniisfahani A2 ; Salehi H1 ; Amirpour N1 ; Hashemibeni B1 ; Kazemi M3 ; Bahramian H1
Authors
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Authors Affiliations
  1. 1. Department of Anatomical Sciences, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Chemistry, University of Isfahan, Isfahan, Iran
  3. 3. Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of Molecular Neuroscience Published:2020


Abstract

Gold nanoparticles (AuNPs) have been proposed as useful medical carriers in the field of regenerative medicine. This study aimed to assess the direct conjugation ability of retinoic acid (RA) with AuNPs and to develop a strategy to differentiate the human adipose-derived stromal/stem cells (hADSCs) into neurons using AuNPs-RA. The physical properties of this nanocarrier were characterized using FT-IR, TEM, and FE-SEM. Moreover, the efficiency of RA conjugation on AuNPs was determined at 99% using UV-Vis spectroscopy. According to the MTT assay, an RA concentration of 66 μM caused a 50% inhibition of cell viability and AuNPs were not cytotoxic in concentrations below 5 μg/ml. Real-time PCR and immunocytochemistry proved that AuNPs-RA is able to increase the expression of neuronal marker genes and the number of neuronal protein (GFAP and MAP2)-positive cells, 14 days post-induction of hADSCs. Taken together, these results confirmed that the AuNPs-RA promote the neuronal differentiation of hADSCs. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
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