The effect of physical and chemical cues on hepatocellular function and morphology

Shimaa A. Abdellatef, Akihiko Ohi, Toshihide Nabatame, Akiyoshi Taniguchi

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Physical topographical features and/or chemical stimuli to the extracellular matrix (ECM) provide essential cues that manipulate cell functions. From the physical point of view, contoured nanostructures are very important for cell behavior in general, and for cellular functions. From the chemical point of view, ECM proteins containing an RGD sequence are known to alter cell functions. In this study, the influence of integrated physical and chemical cues on a liver cell line (HepG2) was investigated. To mimic the physical cues provided by the ECM, amorphous TiO2 nanogratings with specific dimensional and geometrical characteristics (nanogratings 90 nm wide and 150 nm apart) were fabricated. To mimic the chemical cues provided by the ECM, the TiO2 inorganic film was modified by immobilization of the RGD motif. The hepatic cell line morphological and functional changes induced by simultaneously combining these diversified cues were investigated, including cellular alignment and the expression of different functional proteins. The combination of nanopatterns and surface modification with RGD induced cellular alignment and expression of functional proteins, indicating that physical and chemical cues are important factors for optimizing hepatocyte function.

    Original languageEnglish
    Pages (from-to)4299-4317
    Number of pages19
    JournalInternational Journal of Molecular Sciences
    Volume15
    Issue number3
    DOIs
    Publication statusPublished - 2014 Mar 11

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    Keywords

    • Hepatocytes
    • RGD
    • Topography

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Organic Chemistry
    • Spectroscopy
    • Inorganic Chemistry
    • Catalysis
    • Molecular Biology
    • Computer Science Applications
    • Medicine(all)

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