Mesenchymal stem cells (MSCs) are multipotent stem cells that are immunosuppressive and thus of considerable therapeutic potential in transplant operations. However, MSCs rapidly differentiate once in culture, making their large-scale expansion for use in immunosuppressive therapies challenging. Although the differentiation mechanisms of MSCs have been extensively investigated using materials, little is known about how materials can modulate paracrine activities of MSCs. Here, we show for the first time that nanotopography can control
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