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Engineering Pluripotent Stem Cells-Derived Inner Ear Organoids With Enhanced Maturation and Reproducibility by
Harshita Sharma1,2,3, Jungeun Lim4, Woochan Kim1,2,3
1Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|August 11, 2026
Summary
Micro-topographical cues improve inner ear organoid (IEO) development from pluripotent stem cells (PSCs). This microengineering approach enhances structural consistency and functional maturation for better modeling of hearing loss and neurosensory disorders.
Area of Science:
- Biotechnology
- Developmental Biology
- Regenerative Medicine
Background:
- Inner ear organoids (IEOs) from pluripotent stem cells (PSCs) are valuable for studying hearing loss and neurosensory disorders.
- Conventional IEOs face challenges in structural consistency, maturation, and reproducibility due to limited control over early development.
- Improving IEO morphogenesis is crucial for reliable disease modeling and drug screening.
Purpose of the Study:
- To investigate the impact of micro-topographical cues on the development and maturation of PSC-derived IEOs.
- To enhance the structural organization, reproducibility, and functional capabilities of IEOs through microengineering.
- To establish a robust and vascular-compatible IEO platform for neurosensory research and disease modeling.
Main Methods:
- Utilized micro-topographical cues to provide geometric confinement during initial IEO formation.
- Engineered micro-IEOs (M-IEOs) to regulate cell-cell and cell-extracellular matrix interactions.
- Integrated M-IEOs with a microfluidic vascular system to model vascular-epithelial interactions.
Main Results:
- Microengineered IEOs (M-IEOs) demonstrated improved structural reproducibility and neurosensory maturation.
- M-IEOs showed increased hair cell-like populations with characteristic stereocilia and kinocilia structures.
- Enhanced electrophysiological responsiveness and activated inner ear lineage pathways were observed in M-IEOs.
- Demonstrated M-IEOs' utility in modeling vascular-epithelial interactions and inflammatory responses.
Conclusions:
- Transient micro-topographical guidance is an effective strategy for regulating IEO development and maturation.
- Microengineering significantly enhances the quality and reliability of PSC-derived IEOs.
- The developed vascular-compatible M-IEO platform offers a promising tool for neurosensory research, disease modeling, and pharmacological screening.