Cochlear Isolation
Cochlear Isolation - Related Videos
09:03
Culture of Embryonic Mouse Cochlear Explants and Gene Transfer by Electroporation
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Cited by 17 •
2015
We present a method that describes isolation and culture of cochlear explants from embryonic mouse inner ear. We also demonstrate a method for gene transfer into cochlear explants via square-wave electroporation. The in vitro explant culture coupled with gene transfer technique enables researchers to study the effects of altering gene expression during development.
14:23
Bottom-up and Shotgun Proteomics to Identify a Comprehensive Cochlear Proteome
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Cited by 6 •
2014
Proteome analysis of the cochlear sensory epithelium can be challenging due to its small size and because membrane proteins are difficult to isolate and identify. Both membrane and soluble proteins can be identified by combining multiple preparative methods and separation techniques along with high-resolution mass spectrometry.
08:30
Neonatal Murine Cochlear Explant Technique as an In Vitro Screening Tool in Hearing Research
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Cited by 25 •
2017
The goal of this protocol is to demonstrate the preparation, culture, treatment, and immunostaining of neonatal murine cochlear explants. The technique can be utilized as an in vitro screening tool in hearing research.
07:58
Direct Visualization of the Murine Dorsal Cochlear Nucleus for Optogenetic Stimulation of the Auditory Pathway
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Cited by 10 •
2015
The goal of this protocol is to outline a surgical approach to provide direct access to the dorsal cochlear nucleus in a murine model.
06:07
Isolation and Culture of Primary Cochlear Hair Cells from Neonatal Mice
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Cited by 1 •
2023
Herein, we present a detailed protocol for isolating and culturing primary cochlear hair cells from mice. Initially, the organ of Corti was dissected from neonatal (aged 3-5 days) murine cochleae under a microscope. Subsequently, cells were enzymatically digested into a single-cell suspension and identified using immunofluorescence after several days in culture.
FAQs
Careful bone removal exposes the bony labyrinth while limiting damage to the cochlear duct, sensory epithelium, or spiral ganglion. Preserving these structures determines which biological questions the preparation can address. A well-preserved sample can support anatomical analysis as well as cellular, electrophysiological, and molecular investigations of cochlear function and pathology.
The cochlear duct, sensory epithelium, and spiral ganglion provide distinct experimental material. Preserving the sensory epithelium supports investigation of hair-cell development and damage, whereas retaining the spiral ganglion enables studies of neuronal signaling. Maintaining the cochlear duct can contribute to analyses that examine cochlear organization and possible repair or regeneration strategies.
A suitable physiological medium helps maintain the isolated cochlear tissue in a condition appropriate for study after surrounding bone has been removed. This is especially relevant when investigators examine living cellular behavior, electrophysiological activity, or molecular responses. The medium therefore supports the usefulness of the preparation beyond static anatomical observation.
The procedure begins by exposing the bony labyrinth, followed by careful removal of the surrounding temporal-bone and inner-ear bone. Investigators then preserve the selected cochlear structures, such as the duct, sensory epithelium, or spiral ganglion, and place the tissue in a suitable physiological medium. The resulting preparation is ready for downstream biological analysis.
Researchers may choose this approach when they need direct access to cochlear tissue for controlled study rather than relying only on intact surrounding structures. The preparation can support anatomical analysis, cell culture, electrophysiological measurements, and molecular studies. It is therefore relevant to questions involving development, neuronal signaling, hearing loss, and ototoxic drug effects.
Isolated cochlear tissue can help investigators examine how hair cells develop, how cochlear neurons signal, and how hearing-related damage affects inner-ear structures. It also provides material for studying ototoxic drug effects and potential cochlear repair or regeneration. These applications connect microsurgical preparation with broader biological investigations of auditory function and disease.