Journal
ADVANCED MATERIALS
Volume 33, Issue 32, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202007429
Keywords
bioelectricity; bone repair; cardiac tissue engineering; electroactive biomaterials; electrostimulation; nerve regeneration
Categories
Funding
- National Key RAMP
- D project from Minister of Science and Technology, China [2016YFA0202703]
- National Nature Science Foundation [82072065, 81471784]
- Nature Science Foundation of Beijing [2172058]
- National Youth Talent Support Program
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Electroactive biomaterials have the potential to mimic cell microenvironments and regulate cell and tissue behaviors for tissue regeneration. Electrical stimulation can impact various biological processes and is crucial for nerve, bone, and cardiac tissue regeneration.
During natural tissue regeneration, tissue microenvironment and stem cell niche including cell-cell interaction, soluble factors, and extracellular matrix (ECM) provide a train of biochemical and biophysical cues for modulation of cell behaviors and tissue functions. Design of functional biomaterials to mimic the tissue/cell microenvironment have great potentials for tissue regeneration applications. Recently, electroactive biomaterials have drawn increasing attentions not only as scaffolds for cell adhesion and structural support, but also as modulators to regulate cell/tissue behaviors and function, especially for electrically excitable cells and tissues. More importantly, electrostimulation can further modulate a myriad of biological processes, from cell cycle, migration, proliferation and differentiation to neural conduction, muscle contraction, embryogenesis, and tissue regeneration. In this review, endogenous bioelectricity and piezoelectricity are introduced. Then, design rationale of electroactive biomaterials is discussed for imitating dynamic cell microenvironment, as well as their mediated electrostimulation and the applying pathways. Recent advances in electroactive biomaterials are systematically overviewed for modulation of stem cell fate and tissue regeneration, mainly including nerve regeneration, bone tissue engineering, and cardiac tissue engineering. Finally, the significance for simulating the native tissue microenvironment is emphasized and the open challenges and future perspectives of electroactive biomaterials are concluded.
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