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Functionalized Biomimetic Scaffolds for Human-Derived Auditory Neural Circuit Construction.

Pan Feng1, Qian Zhu1,2, Yusong Wang1

  • 1Spine Surgery Department, Nantong First People's Hospital, State Key Laboratory of Digital Medical Engineering, Jiangsu Provincial Key Laboratory of Critical Care Medicine, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Southeast University, Nanjing, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 11, 2026
PubMed
Summary

Researchers developed a human-derived in vitro model using stem cells and biomimetic scaffolds to study sensorineural hearing loss. This model successfully mimics auditory neural circuits and aids in testing protective therapies.

Keywords:
auditory neural circuitbiomimetic scaffoldshuman induced pluripotent stem cellhydrogelspiral ganglion neuron

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Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Otolaryngology

Background:

  • Sensorineural hearing loss stems from auditory circuit damage, but human inner ear tissue scarcity impedes therapy development.
  • Existing human-derived neural circuits face challenges in producing high-purity, mature spiral ganglion neurons (SGNs) and ensuring their oriented integration.

Purpose of the Study:

  • To create a reliable human-derived in vitro model of the auditory neural circuit for studying hearing loss and testing therapies.
  • To generate functional SGN-like neurons from human induced pluripotent stem cells (hiPSCs) and achieve their organized integration.

Main Methods:

  • Differentiated hiPSCs into SGN-like neurons.
  • Utilized electrically conductive biomimetic scaffolds with ordered structures to guide SGN-like neuron maturation and orientation.
  • Co-cultured SGN-like neurons with denervated cochlear tissues to establish an in vitro auditory neural circuit model.

Main Results:

  • Successfully generated SGN-like neurons resembling in vivo counterparts.
  • Biomimetic scaffolds promoted SGN-like neuron maturation and oriented growth.
  • Established a functional in vitro auditory neural circuit model, revealing transcriptional changes and protective phenotypes against cisplatin-induced damage.

Conclusions:

  • The developed human-derived in vitro neural circuit model is a reliable platform for drug screening.
  • This model shows broad application prospects for understanding and treating hearing loss.
  • The study successfully recapitulated auditory circuit function and damage responses in vitro.