Transplantation of directly converted HDF-iNSC to the scala tympani of the cochlea increases neural structure and central auditory connection in an auditory neuropathy animal model

Cochlear implants (CIs) provide effective rehabilitation for severe-to-profound hearing loss, yet their success is limited by secondary degeneration of auditory neurons. Direct transdifferentiation, which enables lineage conversion of somatic cells into neural stem cells without a pluripotent stage, offers advantages over induced pluripotent stem cells by reducing tumorigenic risk, shortening reprogramming time, and...

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No actionable clinical change; this is an animal-model study and results cannot yet be translated to human cochlear implant candidates or auditory neuropathy patients.

Demonstrating that lab-derived neural stem cells can enhance auditory nerve structure and central connectivity in an animal model opens a potential cellular therapy pathway to improve cochlear implant outcomes in auditory neuropathy.

1. 01Human dermal fibroblasts (skin cells) were directly converted into induced neural stem cells (HDF-iNSC) and transplanted into the cochlear scala tympani (a fluid-filled chamber in the inner ear).
2. 02Transplantation increased neural structure and improved central auditory connectivity in an auditory neuropathy animal model.
3. 03Findings are positioned as relevant to future cochlear implant rehabilitation strategies.
4. 04Study is limited to an animal model; human translation is not yet established.
5. 05Published in Molecular Medicine (2026).

PMID

42958474

DOI

10.1186/s10020-026-01591-5.

Journal

Molecular Medicine

Publication type

research_article

Evidence level

4

Population

Animal model of auditory neuropathy

Intervention

Transplantation of directly converted human dermal fibroblast-induced neural stem cells (HDF-iNSC) into the cochlear scala tympani