Electrical Signals at the Subcellular Scale: How Electroactive Materials Regulate Stem Cell Fate

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Cellular Electrophysiology

Background:

• Conventional biochemical approaches lack spatiotemporal precision in regenerative medicine.
• Electroactive materials, including conductive polymers and piezoelectric nanostructures, can mimic native tissue electrical microenvironments.
• These materials offer a paradigm shift by directly modulating subcellular electrical signals.

Purpose of the Study:

• To review electroactive biomaterials and their mechanisms for generating electrical signals.
• To explore how material-mediated electrical cues modulate stem cell fate, subcellular architecture, and function.
• To evaluate applications in neural, bone, and cardiac tissue regeneration and identify challenges.

Main Methods:

• Classification of electroactive biomaterials.
• Analysis of electrical signal generation mechanisms under external stimuli.
• Review of studies on stem cell interactions and differentiation guided by electroactive materials.
• Survey of applications in tissue regeneration.

Main Results:

• Electroactive materials precisely modulate subcellular electrical signals, including organelle membrane potential and ion dynamics.
• Key processes like calcium oscillations and mitochondrial redox homeostasis are regulated by material-mediated electrical cues.
• These materials effectively guide stem cell differentiation and reprogramming for tissue regeneration.

Conclusions:

• Electroactive biomaterials provide a powerful framework for controlling stem cell fate and function.
• Emerging applications show promise in neural, bone, and cardiac tissue regeneration.
• Future research should focus on precise organelle targeting and long-term electrical safety for clinical translation.