PXD004779

PXD004779 is an original dataset announced via ProteomeXchange.

Title	Malignant hepatocellular carcinoma cells enrich translation regulatory proteins in exosomes
Description	It is known that exosomes (endosome derived vesicles) play important roles in the formation of the tumor microenvironment. Hepatocellular carcinoma (HCC) is a highly malignant cancer, whose malignancy is largely influenced by the tumor microenvironment. The possible role and the specific content of the HCC derived exosomes are however largely unknown. We performed super-SILAC-based mass spectrometry (MS) analyses to interrogate the differential proteins in the exosome of three human HCC cell lines, MHCC97H, MHCCLM3 and Hep3B cells. Exosomal proteins were systematically compared with multi-omics strategies, considering both proteomics and translatomics. With stringent data quality control (quantified unique peptides ≥ 2, FDR ≤ 0.01 at both protein and peptide level), 1907 exosomal proteins were confidently identified from the three HCC cell lines, out of which 469 and 443 exosomal proteins significantly altered in the highly malignant cell lines (MHCC97H/Hep3B and MHCCLM3/Hep3B), respectively. ClueGo and IPA analyses on the differentially expressed proteins (DEPs) revealed that translation and ubiquitination biological processes pathways were significantly more encapsulated in the exosome of higher malignant cell lines. We further observed significantly negative correlation of exosomal protein to cellular protein and translating mRNA in terms of relative abundances comparing the higher malignant cell lines with the low malignant cell line. The negatively correlated genes are also translation regulation-centric. In conclusion, we demonstrated that the exosomal enrichment of translation regulatory proteins is related to the malignant level of HCC cells.
HostingRepository	PRIDE
AnnounceDate	2017-07-18
AnnouncementXML	Submission_2017-07-18_00:43:41.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Zhang JIng
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	iodoacetamide derivatized residue
Instrument	LTQ Orbitrap

Revision	Datetime	Status	ChangeLog Entry
0	2016-08-12 01:31:04	ID requested
⏵ 1	2017-07-18 00:43:43	announced

Zhang J, Lu S, Zhou Y, Meng K, Chen Z, Cui Y, Shi Y, Wang T, He QY, Motile hepatocellular carcinoma cells preferentially secret sugar metabolism regulatory proteins via exosomes. Proteomics, 17(13-14):(2017) [pubmed]

curator keyword: Biological, Biomedical

submitter keyword: Exosome, Super SILAC, Proteomics, Translatomics, signaling pathway

Qing-Yu He
contact affiliation	Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University
contact email	tqyhe@jnu.edu.cn
lab head
Zhang JIng
contact affiliation	Jinan University
contact email	Zjing6410@gmail.com
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD004779
     1. Label: PRIDE project
     2. Name: Malignant hepatocellular carcinoma cells enrich translation regulatory proteins in exosomes