4.7 Article

Strategy for Designing a Cell Scaffold to Enable Wireless Electrical Stimulation for Enhanced Neuronal Differentiation of Stem Cells

Journal

ADVANCED HEALTHCARE MATERIALS
Volume 10, Issue 11, Pages -

Publisher

WILEY
DOI: 10.1002/adhm.202100027

Keywords

annular conductive scaffolds; neural stem cells; neuronal differentiation; tissue engineering; wireless electrical stimulation

Funding

  1. Guangdong Province Joint Fund [2019B1515120090]
  2. National Natural Science Foundation of China [51903246, 31700831]
  3. Natural Science Foundation of Jiangsu Province [BK20201196]
  4. Foundation of Jiangsu Key Laboratory of Advanced Functional Polymers Design and Application, Soochow University [KJS1928]

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A strategy for wireless electrical stimulation of stem cell scaffold using a conductive graphene substrate is reported. The wireless ES enhances neuronal differentiation and neurite formation without affecting the viability and stemness maintenance of neural stem cells, indicating potential for neural regenerative medicine.
Electrical stimulation (ES) offers significant advantages in modulating the behavior of stem cells on conductive scaffolds for neural tissue engineering. However, it is necessary to realize wireless ES to avoid the use of external wires in tissues. Thus, herein, a strategy is reported to develop a stem cell scaffold that allows wireless ES. A conductive annular graphene substrate is designed and grown by chemical vapor deposition; this substrate is used as a secondary coil to achieve wireless ES via electromagnetic induction in the presence of a primary coil. The substrate shows excellent biocompatibility for the culture of neural stem cells (NSCs). The results indicate that the applied wireless ES enhances neuronal differentiation, facilitates the formation of neurites, and does not substantially affect the viability and stemness maintenance of NSCs. Collectively, this system provides a strategy for achieving synergy between wireless ES and conductive scaffolds for neural regenerative medicine, which can be further utilized for the regeneration of other tissues.

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