PXD066180

PXD066180 is an original dataset announced via ProteomeXchange.

Title	Distinct Colitis-Associated Macrophages Drive NOD2-Dependent Bacterial Sensing and Gut Homeostasis
Description	Single-cell studies have revealed that intestinal macrophages maintain gut homeostasis through the balanced actions of reactive (inflammatory) and tolerant (non-inflammatory) subpopulations. How such balance is impaired in inflammatory bowel diseases (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), remains unresolved. Here, we define colon-specific macrophage states and reveal the critical role of non-inflammatory colon-associated macrophages (ni-ColAMs) in IBD recovery. Through trans-scale analyses—integrating computational transcriptomics, proteomics, and in vivo interventional studies—we identified GIV (CCDC88A) as a key regulator of ni-ColAMs. GIV emerged as the top-ranked gene in ni-ColAMs that physically and functionally interacts with NOD2, an innate immune sensor implicated in CD and UC. Myeloid-specific GIV depletion exacerbates infectious colitis, prolongs disease, and abolishes the protective effects of the NOD2 ligand, muramyl dipeptide, in colitis and sepsis models. Mechanistically, GIV’s C-terminus binds the terminal leucine-rich repeat (LRR#10) of NOD2 and is required for NOD2 to dampen inflammation and clear microbes. The CD-associated 1007fs NOD2-variant, which lacks LRR#10, cannot bind GIV—providing critical insights into how this clinically relevant variant impairs microbial sensing and clearance. These findings illuminate a critical GIV-NOD2 axis essential for gut homeostasis and highlight its disruption as a driver of dysbiosis and inflammation in IBD.
HostingRepository	PRIDE
AnnounceDate	2025-09-23
AnnouncementXML	Submission_2025-09-22_22:31:21.495.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Majid Ghassemian
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	iodoacetamide derivatized residue
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2025-07-15 17:34:21	ID requested
⏵ 1	2025-09-22 22:31:21	announced

Dataset with its publication pending

ProteomeXchange project tag: Biology/Disease-Driven Human Proteome Project (B/D-HPP), Human Proteome Project

submitter keyword: proteomics, gut homeostasis,TMT10, bacterial sensing

Ghosh, Pradipta
contact affiliation	Professor, Medicine and Cellular and Molecular Medicine Founding Director, Institute for Network Medicine University of California San Diego
contact email	prghosh@health.ucsd.edu
lab head
Majid Ghassemian
contact affiliation	Scientist
contact email	mghassem@ucsd.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/2025/09/PXD066180

PRIDE project URI

• PRIDE
  1. PXD066180
     1. Label: PRIDE project
     2. Name: Distinct Colitis-Associated Macrophages Drive NOD2-Dependent Bacterial Sensing and Gut Homeostasis