title: Surgical method for virally mediated gene delivery to the mouse inner ear through the round window membrane.
abstract: Gene therapy, used to achieve functional recovery from sensorineural deafness, promises to grant better understanding of the underlying molecular and genetic mechanisms that contribute to hearing loss. Introduction of vectors into the inner ear must be done in a way that widely distributes the agent throughout the cochlea while minimizing injury to the existing structures. This manuscript describes a post-auricular surgical approach that can be used for mouse cochlear therapy using molecular, pharmacologic, and viral delivery to mice postnatal day 10 and older via the round window membrane (RWM). This surgical approach enables rapid and direct delivery into the scala tympani while minimizing blood loss and avoiding animal mortality. This technique involves negligible or no damage to essential structures of the inner and middle ear as well as neck muscles while wholly preserving hearing. To demonstrate the efficacy of this surgical technique, the vesicular glutamate transporter 3 knockout (VGLUT3 KO) mice will be used as an example of a mouse model of congenital deafness that recovers hearing after delivery of VGLUT3 to the inner ear using an adeno-associated virus (AAV-1).
authors: Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco; oakil@ohns.ucsf.edu.
authors: Omar
authors: O
authors: Akil
authors: Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco.
authors: Stephanie L
authors: SL
authors: Rouse
authors: Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco.
authors: Dylan K
authors: DK
authors: Chan
authors: Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco.
authors: Lawrence R
authors: LR
authors: Lustig
mesh_terms: D026922:Amino Acid Transport Systems, Acidic / Q000008:administration & dosage / Q000235:genetics; D000818:Animals; D003638:Deafness / Q000151:congenital / Q000235:genetics / Q000628:therapy; D000229:Dependovirus / Q000235:genetics*; D005260:Female; D018014:Gene Transfer Techniques; D015316:Genetic Therapy / Q000379:methods; D005822:Genetic Vectors / Q000008:administration & dosage* / Q000235:genetics; D008297:Male; D051379:Mice; D018345:Mice, Knockout; D012405:Round Window, Ear / Q000601:surgery*
chemical_list: D026922:Amino Acid Transport Systems, Acidic; C504941:Slc17a8 protein, mouse