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Inner Ear Gene Delivery: Vectors and Routes
Chris Valentini1, Betsy Szeto1, Jeffrey W Kysar1,2
1Department of Otolaryngology -- Head and Neck Surgery, Columbia University Vagelos College of Physicians and Surgeons, New York, NY.
Hearing, Balance and Communication
|February 19, 2021
Summary
Gene therapy offers a promising approach to restore hearing by addressing underlying defects. Advances in viral and non-viral vectors, along with inner ear delivery methods, are key to overcoming challenges in treating hearing loss.
Area of Science:
- Otolaryngology
- Ophthalmology
- Molecular Biology
Background:
- Current hearing loss treatments provide limited functional improvement.
- Restoring normal hearing remains an unmet clinical need.
- Gene therapy presents a potential solution for innate hearing defects.
Purpose of the Study:
- Review recent advancements in viral and non-viral vectors for gene therapy.
- Discuss strategies to overcome inner ear delivery barriers for gene products.
- Highlight the potential of gene therapy for hearing restoration.
Main Methods:
- Comprehensive literature search of Medline, EMBASE, Web of Science, and Google Scholar.
- Utilized specific search terms related to inner ear anatomy and gene therapy.
- Included reference lists of identified articles for study selection.
Main Results:
- Both viral and non-viral vectors are crucial for advancing inner ear gene delivery.
- The round window membrane presents a significant barrier to gene delivery.
- Intratympanic and intracochlear delivery methods aim to overcome these barriers.
Conclusions:
- Gene therapy holds promise for restoring hearing by correcting genetic defects.
- Technological progress in inner ear drug delivery enhances gene therapy prospects.
- Further research into delivery techniques is essential for successful gene therapy applications.
