PXD071483-1

PXD071483 is an original dataset announced via ProteomeXchange.

Title	Proteomic dataset of Wt, PTPMT1 KO, CHOP KO and PTPMT1 CHOP double KO regulatory T cells
Description	Mitochondrial defects are emerging as key drivers of gut inflammation, colitis, and IBD. Yet, their role in regulating immune tolerance, fine-tuned by helper T cells, is unclear. Understanding how metabolic changes in T cells impact gut tolerogenic mechanisms, including gut colonization and the balance between tolerance and disease, remains, therefore, a critical challenge. Here, we show that cardiolipin deficiency impairs tolerance to Helicobacter due to loss of regulatory T (Treg) cell function. Without cardiolipin, Treg cells lose metabolic fitness and immunosuppressive capacity igniting inflammation, particularly in the gut. Hence, mice with a T cell-specific deletion of the enzyme PTPMT1, essential for cardiolipin synthesis, are highly vulnerable to pathobiont infections even without microbiome imbalance. Notably, patients affected by Barth syndrome, a genetic disease characterized by severe cardiolipin deficiency, also exhibit inflammation and helper T cell imbalance. Overall, we found that cardiolipin in T cells preserves gut-immune homeostasis, dictating outcomes in pathobiont infections.
HostingRepository	PRIDE
AnnounceDate	2026-04-01
AnnouncementXML	Submission_2026-04-01_01:35:38.650.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Proteomics Facility
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: NEWT:10090;
ModificationList	iodoacetamide derivatized residue
Instrument	Orbitrap Exploris 480

Revision	Datetime	Status	ChangeLog Entry
0	2025-12-02 11:05:15	ID requested
⏵ 1	2026-04-01 01:35:39	announced

Dataset with its publication pending

submitter keyword: PTPMT1, Treg, Cardiolipin

Mauro Corrado
contact affiliation	University of Cologne, Faculty of Mathematics and Natural Sciences, Institute for Genetics, CECAD Research Center, Cologne, De
contact email	mcorrado@uni-koeln.de
lab head
Proteomics Facility
contact affiliation	CECAD Research Center
contact email	proteomics-facility@uni-koeln.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/2026/04/PXD071483

PRIDE project URI

• PRIDE
  1. PXD071483
     1. Label: PRIDE project
     2. Name: Proteomic dataset of Wt, PTPMT1 KO, CHOP KO and PTPMT1 CHOP double KO regulatory T cells