Surface-modified piezoelectric copolymer poly(vinylidene fluoride–trifluoroethylene) supporting physiological extracellular matrixes to enhance mesenchymal stem cell adhesion for nanoscale mechanical stimulation

Donnelly, Hannah and Sprott, Mark R. and Poudel, Anup and Campsie, Paul and Childs, Peter and Reid, Stuart and Salmerón-Sánchez, Manuel and Biggs, Manus and Dalby, Matthew J. (2023) Surface-modified piezoelectric copolymer poly(vinylidene fluoride–trifluoroethylene) supporting physiological extracellular matrixes to enhance mesenchymal stem cell adhesion for nanoscale mechanical stimulation. ACS Applied Materials and Interfaces, 15 (44). pp. 50652-50662. ISSN 1944-8252 (https://doi.org/10.1021/acsami.3c05128)

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Abstract

There is an unmet clinical need to provide viable bone grafts for clinical use. Autologous bone, one of the most commonly transplanted tissues, is often used but is associated with donor site morbidity. Tissue engineering strategies to differentiate an autologous cell source, such as mesenchymal stromal cells (MSCs), into a potential bone-graft material could help to fulfill clinical demand. However, osteogenesis of MSCs can typically require long culture periods that are impractical in a clinical setting and can lead to significant cost. Investigation into strategies that optimize cell production is essential. Here, we use the piezoelectric copolymer poly(vinylidene fluoride–trifluoroethylene) (PVDF-TrFE), functionalized with a poly(ethyl acrylate) (PEA) coating that drives fibronectin network formation, to enhance MSC adhesion and to present growth factors in the solid phase. Dynamic electrical cues are then incorporated, via a nanovibrational bioreactor, and the MSC response to electromechanical stimulation is investigated.

ORCID iDs

Donnelly, Hannah, Sprott, Mark R., Poudel, Anup, Campsie, Paul ORCID logoORCID: https://orcid.org/0000-0003-4570-7133, Childs, Peter ORCID logoORCID: https://orcid.org/0000-0001-7603-9911, Reid, Stuart, Salmerón-Sánchez, Manuel, Biggs, Manus and Dalby, Matthew J.;
CORE (COnnecting REpositories)