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Gold nanoparticles promote osteogenic differentiation of mesenchymal stem cells through p38 MAPK pathway

  • Changqing Yi
  • , Dandan Liu
  • , Chi-Chun Fong
  • , Jinchao Zhang
  • , Mengsu Yang

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    Abstract

    Understanding the interaction mechanisms between nanomaterials and biological cells is important for the control and manipulation of these interactions for biomedical applications. In this study, we investigated the cellular effects of gold nanoparticles (AuNPs) on the differentiation of mesenchymal stem cells (MSCs) and the associated molecular mechanisms. The results showed that AuNPs promoted the differentiation of MSCs toward osteoblast cells over adipocyte cells by inducing an enhanced osteogenic transcriptional profile and an attenuated adipogenic transcriptional profile. AuNPs exerted the effects by interacting with the cell membrane and binding with proteins in the cytoplasm, causing mechanical stress on the MSCs to activate p38 mitogen-activated protein kinase pathway (MAPK) signaling pathway, which regulates the expression of relevant genes to induce osteogenic differentiation and inhibit adipogenic differentiation. © 2010 American Chemical Society.
    Original languageEnglish
    Pages (from-to)6439-6448
    JournalACS Nano
    Volume4
    Issue number11
    DOIs
    Publication statusPublished - 23 Nov 2010

    Research Keywords

    • Adipogenic differentiation
    • Gold nanoparticles
    • Mesenchymal stem cells
    • Mitogen-activated protein kinase pathway
    • Osteogenic differentiation

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