Wednesday, March 12, 2025 3/12/2025

Modern Cellular and Molecular Techniques to Study the Human Temporal Bone

Award Number: U24DC020855
ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS
OPDIV: NIH
AWARD CLASS: COOPERATIVE AGREEMENT
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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PROJECT SUMMARY In the present proposal we will investigate new tissue processing protocols designed to preserve DNA, as well as the morphology. We will preserve, process, and make available human ear tissue to inner ear basic researchers they will be able to compare with their animal models. We have experience using high-resolution advanced imaging techniques to the postmortem temporal bones, and also the membranous structures of the inner ear. We propose to develop and apply these imaging techniques systematically and to correlate the imaging findings with the temporal bone histopathology aiming to visualize structures with non-destructive techniques. In Specific Aim 1) we will serve as part of a collaborative network providing technical services for procuring, preparing, sectioning, and distributing high-quality human inner ear tissues aiming to increase interest in the use of human inner ear tissues for basic scientists. We will continue to procure post- mortem temporal bones aiming to minimize post-mortem times and will facilitate and reach out to additional prospective researchers through the collaborative network and through meetings and provide human inner ear tissues of high-quality. We will create hematoxylin and eosin digital shareable library with our archive of temporal bones, and this library will be shared through the National Temporal Bone Registry to scientists. We will disseminate protocols for temporal bone collection, processing, and inner ear tissue processing and provide hands-on instruction on these protocols on demand and via zoom conferences. In Specific Aim 2, we will develop new tissue collection and processing techniques for temporal bones by using animal temporal bones to develop techniques which preserve DNA, mRNA and proteins and preserve morphology. We aim to develop new tissue processing protocols which will allow for the use of immunofluorescence, DNA extraction and sequencing, and the application of RNAScope, a powerful in situ hybridization tool. A new protocol will be developed to further optimize sequencing the DNA from the extracted DNA using temporal bones specimens to correlate the gene sequencing with the histopathology. In Aim 3. We will improve temporal bone inner ear visualization using novel non-destructive imaging techniques which we will correlate with histopathology. In Aim 4, we will develop a deep learning-based stain transformation framework to visualize specific anatomical structures such as the spiral ganglion neurons to obtain accurate histopathological analysis.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $676,258 )
2025	2025	UNIVERSITY OF CALIFORNIA, LOS ANGELES	10889 WILSHIRE BLVD STE 700	LOS ANGELES	CA	90024	LOS ANGELES	USA	Research Related to Deafness and Communication Disorders	000	3	12/13/2024	NON-COMPETING CONTINUATION	$676,258
														Subtotal = $676,258

Issue Date FY: 2024 ( Subtotal = $678,599 )
2024	2024	UNIVERSITY OF CALIFORNIA, LOS ANGELES	10889 WILSHIRE BLVD STE 700	LOS ANGELES	CA	90024	LOS ANGELES	USA	Research Related to Deafness and Communication Disorders	000	2	11/28/2023	NON-COMPETING CONTINUATION	$610,739
2024	2024	UNIVERSITY OF CALIFORNIA, LOS ANGELES	10889 WILSHIRE BLVD STE 700	LOS ANGELES	CA	90024	LOS ANGELES	USA	Research Related to Deafness and Communication Disorders	001	2	5/3/2024	NON-COMPETING CONTINUATION	$67,860
														Subtotal = $678,599

Issue Date FY: 2023 ( Subtotal = $667,203 )
2023	2023	UNIVERSITY OF CALIFORNIA, LOS ANGELES	10889 WILSHIRE BLVD STE 700	LOS ANGELES	CA	90024	LOS ANGELES	USA	Research Related to Deafness and Communication Disorders	000	1	12/19/2022	NEW	$667,203
														Subtotal = $667,203

Grand Total All Awards = $2,022,060

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Modern Cellular and Molecular Techniques to Study the Human Temporal Bone

Award Number: U24DC020855

ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS

OPDIV: NIH

AWARD CLASS: COOPERATIVE AGREEMENT

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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