The maintenance of oocytes in the mammalian ovary involves extreme protein longevity
Ontology highlight
ABSTRACT: In mammals, oocytes are formed in the female embryo and need to be preserved in the ovary to ensure the viability of the next generation. How oocytes are maintained for decades is unclear. Here, we combined pulse-chase stable isotope labelling coupled with mass spectrometry, single-cell RNA-seq, microscopy and NanoSims to create an atlas of protein homeostasis in mouse oocytes and ovaries over the entire reproductive lifespan. Our results show that protein turnover in the ovary is much slower than in other organs, with hundreds of extremely long-lived proteins across a broad range of complexes and pathways, including mitochondria, ribosomes and the cytoskeleton. We propose that slow protein turnover helps to maintain proteostasis in oocytes and the ovary over long periods, protecting the germline across generations.
INSTRUMENT(S): Orbitrap Fusion, Orbitrap Exploris 480
ORGANISM(S): Mus Musculus (ncbitaxon:10090)
SUBMITTER: Dr. Juliane Liepe Prof. Henning Urlaub Dr. Melina Schuh
PROVIDER: MSV000092528 | MassIVE | Wed Jul 26 10:52:00 BST 2023
SECONDARY ACCESSION(S): PXD044113
REPOSITORIES: MassIVE
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