A human induced pluripotent stem cell-based modular platform to challenge sensorineural hearing loss.

Area of Science:

• Oto-neuroscience
• Stem cell biology
• Regenerative medicine

Background:

• Hearing relies on cochlear hair cells (HCs) and neurons, which are lost in sensorineural hearing loss (SNHL).
• Mammals, including humans, cannot regenerate these cells, leading to irreversible hearing impairment.
• SNHL affects millions globally and is a growing concern, with limited treatments like hearing aids and cochlear implants.

Purpose of the Study:

• To review the potential of human induced pluripotent stem cells (hiPSCs) for SNHL research and therapy.
• To highlight the need for human otic cell bioassays to advance SNHL treatments.
• To explore hiPSC applications in disease modeling, drug testing, and cell-based therapies for SNHL.

Main Methods:

• Generation of in vitro otic cell models using hiPSCs in 2D and 3D cultures.
• Induction of inner ear progenitors and sensory HCs from hiPSCs.
• Review of preclinical applications of hiPSC-derived otic cells.

Main Results:

• hiPSCs can generate functional inner ear progenitors and sensory HCs in vitro.
• hiPSC-based otic cell models provide a platform for disease modeling and drug screening.
• Autologous stem cell therapy using hiPSCs shows promise for SNHL regeneration.

Conclusions:

• hiPSCs represent a significant preclinical platform for understanding SNHL.
• hiPSC-derived otic cells facilitate the development of novel therapeutic strategies for hearing loss.
• This approach offers opportunities to identify new treatments for irreversible SNHL.