Neuroimmune Microenvironment Reprogramming via Immuno-piezoelectric Transducers for Synergistic Stem Cell Therapy in...

Area of Science:

• Neuroscience
• Biomedical Engineering
• Regenerative Medicine

Background:

• Secondary traumatic brain injury (TBI) creates a pro-inflammatory environment hindering neural stem cell (NSC) therapy and tissue regeneration.
• Current treatments face challenges in modulating the neuroimmune response for effective brain repair.

Purpose of the Study:

• To develop an immuno-piezoelectric transducer for TBI treatment.
• To create an anti-inflammatory microenvironment and deliver wireless electrical stimulation for multimodal NSC therapy.

Main Methods:

• An immuno-piezoelectric transducer was designed to polarize microglia to an anti-inflammatory M2 phenotype.
• Wireless electrical stimulation was delivered via ultrasound to promote NSC differentiation and neural integration.
• The efficacy of this multimodal therapy was evaluated in TBI rat models.

Main Results:

• The transducer successfully modulated the immune microenvironment, reducing inflammation and enhancing NSC survival.
• Wireless electrical stimulation promoted differentiation into specific neuron types and improved neurite complexity.
• The multimodal therapy significantly restored structural integrity and improved functional and behavioral outcomes in TBI models.

Conclusions:

• Integrating piezoelectricity with immunomodulation offers a novel therapeutic strategy for TBI.
• This approach effectively reprograms the neuroimmune microenvironment, paving the way for advanced brain injury repair.
• The developed transducer shows promise for enhancing NSC-based therapies and promoting neural regeneration.