PXD062261-1

PXD062261 is an original dataset announced via ProteomeXchange.

Title	Translational repression by 4E-T is crucial to maintain the prophase-I arrest in vertebrate oocytes
Description	Meiotic maturation of vertebrate oocytes occurs in the near-absence of transcription. Thus, female fertility relies on timely translational activation of maternal transcripts stockpiled in full-grown prophase-I-arrested oocytes. However, how expression of these mRNAs is suppressed to maintain the long-lasting prophase-I arrest remains mysterious. Utilizing fast-acting TRIM-Away, we demonstrate that acute loss of the translation repressor 4E-T triggers spontaneous release from prophase-I arrest in mouse and frog oocytes. This is due to untimely expression of key meiotic drivers like c-Mos and cyclin-B1. Notably, mutant 4E-T associated with premature ovarian insufficiency fails to maintain the prophase-I arrest in Xenopus oocytes. We further show that 4E-T association with eIF4E and PATL2 is critical for target mRNA binding and repression. Thus, 4E-T is a central factor in translational repression of mRNAs stockpiled in full-grown oocytes for later activation and, therefore, essential to sustain the oocyte pool throughout the reproductive lifespan of female vertebrates.
HostingRepository	PRIDE
AnnounceDate	2025-07-18
AnnouncementXML	Submission_2025-07-18_04:18:48.215.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Florian Stengel
SpeciesList	scientific name: Xenopus laevis (African clawed frog); NCBI TaxID: 8355;
ModificationList	No PTMs are included in the dataset
Instrument	Orbitrap Eclipse

Revision	Datetime	Status	ChangeLog Entry
0	2025-03-26 07:06:42	ID requested
⏵ 1	2025-07-18 04:18:48	announced

Dataset with its publication pending

submitter keyword: 4ET, Xenopus laevis, DIA, Knockdown, label-free quantification, 4ET-TRIM

Florian Stengel
contact affiliation	Department of Biology, AG Stengel, University of Konstanz, Germany
contact email	florian.stengel@uni-konstanz.de
lab head
Florian Stengel
contact affiliation	Universität Konstanz
contact email	florian.stengel@uni-konstanz.de
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2025/07/PXD062261

PRIDE project URI

• PRIDE
  1. PXD062261
     1. Label: PRIDE project
     2. Name: Translational repression by 4E-T is crucial to maintain the prophase-I arrest in vertebrate oocytes