Impact on gene expression in response to silver-decorated titania nanomatrix using an in vitro satellite cell culture model

Herein we report the synthesis of novel silver-ornamented titanium dioxide crossbreed nanofibers via electrospinning with improved cellular response for possible muscle tissue engineering applications. Titanium isopropoxide and silver nitrate served as precursors to get high aspect ratio silver-decorated titania nanofibers. For a model application in muscle tissue engineering, muscle satellite cells of local Korean Hanwoo were cultured on synthesized hybrid nanofibers. The standard microarray technique has been employed to screen the potential effects of synthesized nanofibers on genome after the culture of cells on hybrid nanofibers. EDX, EPMA, FT-IR, XRD and TEM analysis confirmed purity, distribution, interaction and crystalline nature of this material while the diameter of these nanofibers estimated from FE-SEM and TEM were between 200 and 300 nm. Cell counting with Kit-8 assay at regular time intervals and phase contrast microscopy data revealed that satellite cells proliferated well on nanofibers and cellular attachments were visible by SEM. Microarray analyses of gene expression response indicated clear changes in gene expression in a range of proliferation and apoptosis. Our results open-up new ways to develop and analyze gene expression biomarkers for satellite cell proliferation and finally muscle tissue engineering.