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Integration of Functional Human Auditory Neural Circuits Based on a 3D Carbon Nanotube System
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Integration of Functional Human Auditory Neural Circuits Based on a 3D Carbon Nanotube System
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Journal Article
Integration of Functional Human Auditory Neural Circuits Based on a 3D Carbon Nanotube System
2024
Overview
The physiological interactions between the peripheral and central auditory systems are crucial for auditory information transmission and perception, while reliable models for auditory neural circuits are currently lacking. To address this issue, mouse and human neural pathways are generated by utilizing a carbon nanotube nanofiber system. The super‐aligned pattern of the scaffold renders the axons of the bipolar and multipolar neurons extending in a parallel direction. In addition, the electrical conductivity of the scaffold maintains the electrophysiological activity of the primary mouse auditory neurons. The mouse and human primary neurons from peripheral and central auditory units in the system are then co‐cultured and showed that the two kinds of neurons form synaptic connections. Moreover, neural progenitor cells of the cochlea and auditory cortex are derived from human embryos to generate region‐specific organoids and these organoids are assembled in the nanofiber‐combined 3D system. Using optogenetic stimulation, calcium imaging, and electrophysiological recording, it is revealed that functional synaptic connections are formed between peripheral neurons and central neurons, as evidenced by calcium spiking and postsynaptic currents. The auditory circuit model will enable the study of the auditory neural pathway and advance the search for treatment strategies for disorders of neuronal connectivity in sensorineural hearing loss. The lack of therapeutic avenues for auditory neural pathway disorders is primarily attributed to inadequate research models. This study pioneers a novel auditory circuit model using super‐aligned carbon nanotubes. The peripheral‐central neural organoids with functional synaptic transmission facilitate the exploration of the auditory neural pathway and propel the quest for strategies for neuronal connectivity disorders in sensorineural hearing loss.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc,Wiley
