PXD033612

PXD033612 is an original dataset announced via ProteomeXchange.

Title	Integrated omics analysis for characterization of the contribution of high fructose corn syrup to non-alcoholic fatty liver disease in obesity
Description	High Fructose Corn Syrup (HFCS), a sweetener rich in glucose and fructose, is nowadays widely used in beverages and processed foods, and its consumption has been correlated to the emergence and progression of Non-Alcoholic Fatty Liver Disease (NAFLD). Nevertheless, the exact molecular mechanisms by which HFCS impacts hepatic metabolism are still unclear, especially in the context of obesity. In contrast, the vast majority of current studies in the field focus either on the detrimental role of fructose on NAFLD or compare the additive impact of fructose versus glucose in this process. Besides, studies elaborating on the role of fructose in NAFLD utilize molecular fructose, rather than HFCS, thus lacking simulation of human NAFLD in a more realistic way. Herein, by engaging combined omic approaches, we sought to characterize the additive impact of HFCS on NAFLD during obesity and recognize candidate pathways and molecules which could mediate the exaggeration of steatosis under these conditions. To achieve this goal, C57BL/6 male mice were fed a normal-fat (ND), a high-fat (HFD) or a HFD supplemented with HFCS (HFD-HFCS) and upon examination of their metabolic and NAFLD phenotype, proteomic and lipidomic analyses were conducted and utilized separately or in an integrated mode to identify HFCS-related molecular alterations of the hepatic metabolic landscape. Although HFD and HFD-HFCS mice displayed comparable obesity, HFD-HFCS mice showed greater aggravation of hepatic steatosis. Importantly, the HFD-HFCS hepatic proteome was characterized by an upregulation of the enzymes implicated in de novo lipogenesis (DNL), while palmitic-acid containing diglycerides were significantly increased in the HFD-HFCS hepatic lipidome, as compared to the HFD group. Integrated omic analysis further suggested that TCA cycle overstimulation, is likely contributing towards the intensification of steatosis in the HFD-HFCS dietary theme. Overall, our results imply that HFCS may significantly contribute to NAFLD aggravation during obesity, with its fructose-rich properties being the main suspect.
HostingRepository	PRIDE
AnnounceDate	2023-11-14
AnnouncementXML	Submission_2023-11-14_06:59:26.203.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Martina Samiotaki
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Q Exactive HF-X

Revision	Datetime	Status	ChangeLog Entry
0	2022-05-04 10:05:40	ID requested
1	2023-08-03 04:30:05	announced
⏵ 2	2023-11-14 06:59:26	announced	2023-11-14: Updated project metadata.

Dataset with its publication pending

submitter keyword: non-alcoholic fatty liver disease

high fructose corn syrup

obesity

de novo lipogenesis

mitochondrial dysfunction

integrated omics

Antonios Chatzigeorgiou
contact affiliation	Department of Physiology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Str., 11527, Athens, Greece.
contact email	achatzig@med.uoa.gr
lab head
Martina Samiotaki
contact affiliation	Protein Analysis Laboratory B.S.R.C. "Alexander Fleming", Alexander Fleming Street 34 16672, Vari, Greece
contact email	samiotaki@fleming.gr
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/2023/08/PXD033612

PRIDE project URI

• PRIDE
  1. PXD033612
     1. Label: PRIDE project
     2. Name: Integrated omics analysis for characterization of the contribution of high fructose corn syrup to non-alcoholic fatty liver disease in obesity