"Time-resolved quantitative proteomic analysis of the developing otic vesicle reveals putative congenital hearing loss candidates and a novel role for Tgfbi

ABSTRACT: A large number of congenital hearing loss cases have an unknown genetic etiology. So far, transcriptomic approaches have successfully identified many candidate regulators of otic development, little is known about the abundance of their protein products during the development of the inner eat. Herein we used a multiplexed quantitative mass spectrometry-based proteomic approach to determine temporal trends in protein abundances during inner ear (otic) development in Xenopus. Wild type Xenopus embryos were cultured to larval stages and their otic tissues were manually dissected at five stages that represent that represent key transitions in otic morphology. The samples were processed using a bottom-up proteomic workflow and analyzed using LC-MS3.The analysis revealed dynamic expression of proteins related to cytoskeletal regulation, integrin signaling, and the extracellular matrix as inner ear structures developed. We correlated the dynamically regulated proteins in our dataset with previously published putative downstream targets of syndromic hearing loss genes SIX1 and CHD7 to identify novel candidate genes for congenital hearing loss.

INSTRUMENT(S): Orbitrap Fusion Lumos

ORGANISM(S): Xenopus Laevis (african Clawed Frog)

TISSUE(S): Inner Ear

SUBMITTER: Peter Nemes  

LAB HEAD: Peter Nemes

PROVIDER: PXD041991 | Pride | 2023-10-24

REPOSITORIES: Pride