Remote Tuning of Built‐In Magnetoelectric Microenvironment to Promote Bone Regeneration by Modulating Cellular Exposure to Arginylglycylaspartic Acid Peptide.

Mimicking the endogenous physical microenvironment is a promising strategy for biomaterial‐mediated tissue regeneration. However, precise control of physical cues such as electric/magnetic fields within extracellular environments to facilitate tissue regeneration remains a formidable challenge. Here, remote tuning of the magnetoelectric microenvironment is achieved by a built‐in CoFe2O4/poly(vinylidene fluoridetrifluoroethylene) [P(VDF‐TrFE)] magnetoelectric membrane for effective bone regeneration. The magnetoelectric microenvironment from the nanocomposite membranes promotes osteogenic differentiation of bone marrow mesenchymal stem cells (BM‐MSCs) and enhances bone defect regeneration by increasing cellular exposure and integrin binding to arginylglycylaspartic acid peptide, as predicted by molecular dynamics simulations. Moreover, BM‐MSCs are directed to the osteogenic lineage by osteoimmuomodulation which involves accelerating transition from an initial inflammatory immune response to a pro‐healing regenerative immune response. This work offers a strategy to mimic the magnetoelectric microenvironment for achieving precise and effective tissue regenerative therapies, as well as provides fundamental insights into the biological effects driven by the built‐in magnetoelectric membrane, which can be remotely tuned to precisely modulate osteogenesis in situ. [ABSTRACT FROM AUTHOR]