Dataset Information

Exosomes analysis for identification of potential biomarkers of cholangiocarcinoma and drug targets identification: proteomic and metabolomic approaches

ABSTRACT: Exosomes are extracellular vesicles necessary for cell communication, including cancer cells. Tumor-derived exosomes have been essential in biomarker screening and also therapeutic targets. In the present study, we used proteomics and metabolomics approaches to investigate the CCA biomarkers and molecular targets action of atractylodin and β-eudesmol in the exosomes isolated from cell culture media.

ORGANISM(S): Cellular Organisms

SUBMITTER: Wanna Chajaroenkul

PROVIDER: PXD054590 | JPOST Repository | Thu Nov 07 00:00:00 GMT 2024

REPOSITORIES: jPOST

ACCESS DATA

Dataset's files

Source:

			Action	DRS
	CL-6_100_Et_24H_1.mzXML	Mzxml
	CL-6_100_Et_24H_2.mzXML	Mzxml
	CL-6_100_Et_24H_3.mzXML	Mzxml
	CL-6_100_Et_48H_1.mzXML	Mzxml
	CL-6_100_Et_48H_2.mzXML	Mzxml

Items per page:

1 - 5 of 20

Similar Datasets

Project description:Exosomes are molecular entities derived from membrane vesicles of endocytic origin secreted by most cell types. These vesicles are implicated in cell-to-cell communication, deliver proteins and mRNA molecules between cells. Recent studies have shown that exosomes are found in body fluids such as saliva, blood, urine, amniotic fluid, malignant ascites, bronchoalveolar lavage fluid, synovial fluids and breast milk. Exosomes secreted through human saliva contain mRNA may potentially be useful for diagnostic purposes. Although the exact protective mechanism of saliva RNA is a topic of debate, the consensus is that the enrichment of mRNAs in these nano-vesicles in one of the features of the biomarker discoveries. Our aim was to determine if exosomes are present in human saliva and to nano-characterize their transcriptomic content. Exosomes were purified by differential ultracentrifugation, identified by immunoelectron microscopy, flow cytometry and western blot using a CD-63 antibody. Atomic force microscopy studies revealed ultra structural analysis of both size and density of exosomes. Microarray analysis revealed the presence of 590 mRNA core transcripts are relatively stable inside the exosomes, which can be of saliva mRNA biomarkers. Exosomal mRNA stability was determined by detergent lyses with treatment of RNase. Under in vitro conditions fluorescent dye labeled saliva exosomes were able to communicate between human oral keratinocytes studied by using fluorescence microscopy. The RNA from saliva exosomes can transfer their genetic information to human oral keratinocytes and alters gene expression in the new location. Together, these results suggest that saliva is involved in mRNA trafficking via exosomes, and provides a mechanism for cargoing passenger mRNAs. Our findings are consistent with proposal that exosomes can shuttle RNAs between cells and mRNA is protected inside these vesicles may be a possible resource for biomarker discovery. Experiment Overall Design: Human saliva exosomes were purified through differential centrifugation followed by RNA extraction and hybridization on Affymetrix microarrays. We were able to obtain normal human subjects saliva which are pooled and subjected to ultracentrifugation. The protocol was approved by UCLA Institutional review board. 1 ml of saliva exosomes were used to extract RNA followed by two rounds of amplification by Actorus Amp kit. The amplified RNA was biotin labled and hybridized with Affymetrix protocol.

Dataset Information

Exosomes analysis for identification of potential biomarkers of cholangiocarcinoma and drug targets identification: proteomic and metabolomic approaches

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets