PXD036456-2

PXD036456 is an original dataset announced via ProteomeXchange.

Title	Comprehensive proteomic analysis reveals omega-3 fatty acids to counteract endotoxin-stimulated metabolic dysregulation in porcine enterocytes
Description	Omega-3 polyunsaturated fatty acids (n-3 PUFA), such as the eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are reported to beneficially affect intestinal immunity. The intestinal epithelial layer (IEL), made up of absorptive cells as the enterocytes, is the primary site of fatty acid absorption. So far, the biological pathways modulated by n-3 PUFA in IEL during infection remain elusive. In the present study, shotgun proteomics analysis integrated with RNA sequencing (RNA-seq) technology was employed to unveil the proteomic changes induced by n-3 PUFA in enterocytes, in the presence and absence of lipopolysaccharide (LPS) stress conditions. A total of 33, 85, and 88 differential proteins were identified in the IPEC-J2 cells exposed to (i) n-3 PUFA (DHA:EPA, 1:2, 10 µM, 24 h), (ii) LPS (10 µg/mL, 24 h), or (iii) n-3 PUFA pre-treatment followed by LPS stimulation, respectively. Functional annotation and pathway analysis of the differential proteins revealed the modulation of central carbon metabolism, including glycolysis/gluconeogenesis, pentose phosphate pathway, and oxidative phosphorylation. Specifically, LPS caused metabolic dysregulation in the IPEC-J2 cells, abated upon prior treatment with n-3 PUFA. Indeed, n-3 PUFA supplementation facilitated enterocyte development and lipid homeostasis. This work provided a comprehensive picture of the biological pathways modulated by n-3 PUFA in enterocytes, both in the absence and presence of a state of endotoxin-induced metabolic dysregulation. Our findings provide important insights into the role of n-3 PUFA in the intestinal barrier, which could support better planning of nutritional strategies in managing intestinal health and immunity.
HostingRepository	PRIDE
AnnounceDate	2024-10-22
AnnouncementXML	Submission_2024-10-22_06:17:14.185.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Salvatore Pisanu
SpeciesList	scientific name: Sus scrofa domesticus (domestic pig); NCBI TaxID: 9825;
ModificationList	acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2022-09-02 05:12:55	ID requested
1	2023-12-11 02:31:53	announced
⏵ 2	2024-10-22 06:17:14	announced	2024-10-22: Updated project metadata.

10.1038/S41598-023-48018-3;

submitter keyword: Lipopolysaccharides, LC-MS/MS., Enterocytes, Metabolic stress,Biological dataset, Omega-3 polyunsaturated fatty acids, Shotgun proteomics

Salvatore Pisanu
contact affiliation	Proteomics and Immunodiagnostic Lab at Porto Conte Ricerche Srl, Alghero (SS), Italy.
contact email	pisanu@portocontericerche.it
lab head
Salvatore Pisanu
contact affiliation	Porto Conte Ricerche, Alghero, Sardinia, Italy.
contact email	pisanu@portocontericerche.it
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD036456
     1. Label: PRIDE project
     2. Name: Comprehensive proteomic analysis reveals omega-3 fatty acids to counteract endotoxin-stimulated metabolic dysregulation in porcine enterocytes