PXD019703-3

PXD019703 is an original dataset announced via ProteomeXchange.

Title	SMARCAD1 and TOPBP1 contribute to heterochromatin maintenance at the transition from the 2C-like to the pluripotent state
Description	Chromocenters are established after the 2-cell (2C) stage during mouse embryonic development, but the factors that mediate chromocenter formation remain largely unknown. To identify regulators of 2C heterochromatin establishment, we generated an inducible system to convert embryonic stem cells (ESCs) to 2C-like cells. This conversion is marked by a global reorganization and dispersion of H3K9me3-heterochromatin foci, which are then reversibly formed upon re-entry into pluripotency. Profiling the chromatin-bound proteome (chromatome) by genome capture of ESCs transitioning to 2C-like cells, we uncover chromatin regulators involved in de novo heterochromatin formation. We identified TOPBP1 and investigated its binding partner SMARCAD1. SMARCAD1 and TOPBP1 associate with H3K9me3-heterochromatin in ESCs. Interestingly, the nuclear localization of SMARCAD1 is lost in 2C-like cells. SMARCAD1 or TOPBP1 depletion in mouse embryos lead to developmental arrest, reduction of H3K9me3 and remodeling of heterochromatin foci. Collectively, our findings contribute to comprehending the maintenance of chromocenters during early development.
HostingRepository	PRIDE
AnnounceDate	2023-04-28
AnnouncementXML	Submission_2023-04-28_02:27:25.712.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	EvaBorràs
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	monohydroxylated residue; acetylated residue
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2020-06-10 18:03:59	ID requested
1	2023-04-18 02:03:30	announced
2	2023-04-21 03:16:16	announced	2023-04-21: Updated project metadata.
⏵ 3	2023-04-28 02:27:26	announced	2023-04-28: Updated project metadata.
4	2023-11-14 08:51:07	announced	2023-11-14: Updated project metadata.

submitter keyword: LC-MSMS,ESC, chromatome

EduardSabido
contact affiliation	Center for Genomic Regulation (CRG) University Pompeu Fabra (UPF)
contact email	eduard.sabido@crg.eu
lab head
EvaBorràs
contact affiliation	UPF
contact email	eva.borras@upf.edu
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/2023/04/PXD019703

PRIDE project URI

• PRIDE
  1. PXD019703
     1. Label: PRIDE project
     2. Name: SMARCAD1 and TOPBP1 contribute to heterochromatin maintenance at the transition from the 2C-like to the pluripotent state