AAV mediated gene therapy is a promising therapeutic route for the treatment of inner ear disorders. However, finding a safe and effective delivery route for a gene therapy has been proven difficult to achieve as traditional routes of administration can cause additional damage to cells of the inner ear. To circumvent this challenge, researchers at Nationwide Children’s have explored the cerebrospinal fluid delivery route to prevent procedural damages. Our researchers have designed vectors to include cochlea-cell type promoters to achieve cell type specific expression and therefore have designed a subset of highly effective AAV gene therapy candidates to treat disorders affecting the inner ear.

The invention is to use cerebrospinal fluid (CSF) as a delivery route for AAV mediated gene therapy to the cochlea. We found that CSF injections lead to spreading of AAV vectors throughout the entire nervous system as well as result in good targeting of the inner hair cells inside the cochlea. This could be particularly interesting for diseases that affect both the central nervous system as well as cells in the ear/cochlea. Moreover, the CSF delivery route could be used in combination with a cochlea-cell type specific promoter to achieve cell type specific expression.

It is a new delivery route which could be combined with various gene therapy approaches for hearing disorders.
The delivery route is promising because alternative delivery routes with injection directly into the cochlea often result in damage caused by the procedure. That damage could be prevented using the intrathecal CSF route. Thus, gene therapies delivered that way could be safer and more effective since damage could be avoided.

Benefits:

Many groups are working on a cochleal cell targeting of AAVs using intratympanic injections or injections directly into the cochlea as well as intravenous injections. We envision using the CSF as the delivery method of choice.

State of Development:

Pre-clinical

Potential Applications/Markets:

This invention has broad applications in the field of neurological and neurodegenerative disorders that also affect hearing, as well as for diseases that affect hearing by debilitating cells of the cochlea. Thus, there is potential for development of therapies for several diseases.

Opportunity/Seeking:

Development Partner

Licensing

Seeking Investment

IP Status:

Patent Application Submitted