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Brain Extracellular Matrix-Based Electronic Brain Biochip
Xiaoyan Liu1,2, Ruihua Dong1, Chen Hang1
1Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen 518055, China.
Researchers developed a 3D electronic brain biochip using decellularized extracellular matrix (dECM) hydrogels and flexible electrodes. This novel platform enables monitoring of neural networks, advancing artificial brain models for neurobiology research.
Area of Science:
- Neuroscience
- Biomaterials Engineering
- Bioelectronics
Background:
- In vitro models require 3D microenvironments for high-fidelity neuronal activity monitoring.
- Existing models often lack the complex cellular and structural cues of the native brain.
Purpose of the Study:
- To develop a 3D neural network platform that recapitulates the brain's microenvironment.
- To integrate decellularized extracellular matrix (dECM) hydrogels with flexible electrodes for advanced neural monitoring.
Main Methods:
- Constructed a multilayer 3D neural network using porcine brain dECM hydrogels and multichannel electrodes.
- Cultured primary rat neurons and hiPSC-derived neurons within the dECM hydrogels.
- Performed real-time electrophysiological recordings and chemical stimulation of the 3D neural networks.
Main Results:
- dECM hydrogels promoted neurite outgrowth and neural connectivity, forming functional 3D networks within 3 weeks.
- The platform supported independent monitoring of each layer and signal capture throughout the 3D volume.
- Observed synchronized bursting activity across all layers upon chemical stimulation.
Conclusions:
- The electronic brain biochip provides a scalable 'electronic organoid' platform for studying neuronal dynamics and neuropharmacology.
- This approach upcycles biological waste into valuable neural scaffolds, advancing artificial brain models.
- Represents a significant step towards bridging engineered neural tissues and functional neurobiology.
