Dataset Information

Proteome profiling of mucinous and non-mucinous colorectal cancer

ABSTRACT: Mucus is associated with poor prognosis of colorectal cancer, but its mechanism remains unclear. The aim of this study was to reveal the key proteins in mucinous colorectal cancer. In this study, high-resolution liquid chromatography tandem mass spectrometry (LC-MS / MS) combined with quantitative 6-plex tandem mass mass tag labeling was used to profile protein changes in the left and right sides of mucinous and non-mucinous colorectal cancer tissues. A total of 7432 proteins were identified and analyzed.

ORGANISM(S): Homo Sapiens

SUBMITTER: Wei Ge

PROVIDER: PXD022802 | iProX | Sat Nov 28 00:00:00 GMT 2020

REPOSITORIES: iProX

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Publications

Comprehensive Proteomic Analysis of Colon Cancer Tissue Revealed the Reason for the Worse Prognosis of Right-Sided Colon Cancer and Mucinous Colon Cancer at the Protein Level.

Chen Yanyu Y Hou Wenyun W Zhong Miner M Wu Bin B

Current oncology (Toronto, Ont.) 20210915 5

To clarify the molecular mechanisms underlying the poor prognosis of right-sided and mucinous colon cancer at the proteomic level. A tandem mass tag-proteomics approach was used to identify differentially expressed proteins (DEPs) in colon carcinoma tissues from different locations and with different histological types to reveal the underlying mechanisms of these differences at the protein level. In additional, the DEPs were analyzed using bioinformatics methods. The proteomics profiles among co ...[more]

PMID: 34590603

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Project description:Alterations in glycosylation are seen in many types of cancer, including colorectal cancer (CRC). CRC is known to display glycosylation alterations. Glycans, the sugar moieties of glycoconjugates, are involved in many important functions relevant to cancer, such as cell signaling and adhesion, and may can be of value as biomarkers. In this study, we have used mass spectrometry to analyze the N-glycan profiles of 35 CRC tissue samples from patients with tumors in the right or left colon and 10 healthy tissue samples from non-CRC patients who underwent operations for other reasons. The tumor samples were divided into groups depending on tumor location (right or left colon) and stage (II or III), while the healthy samples were divided into right or left side of the colon. The levels of neutral and acidic N-glycan compositions and glycan classes were analyzed in a total of ten different groups. Surprisingly, there were no significant differences in glycan levels when all right- and left-sided CRC samples were compared, and few differences (such as in the abundance of the neutral N-glycan H3N5) were seen when the samples were divided according to both location and stage. Multiple significant differences were found in the levels of glycans and glycan classes when stage II and III samples were compared, and these glycans could be of value as candidates for new markers of cancer progression. In order to validate our findings, we analyzed healthy tissue samples from the right and left colon and found no significant differences in the levels of any of the glycans analyzed, confirming that our findings when comparing CRC samples from the right and left colon are not due to normal variations in the levels of glycans between the healthy right and left colon. Additionally, the levels of the acidic glycans H4N3F1P1, H5N4F1P1, and S1H5N4F1 were found to change in a cancer-specific but colon location-nonspecific manner, indicating that CRC affects glycan levels in similar ways, regardless of tumor location.

Dataset Information

Proteome profiling of mucinous and non-mucinous colorectal cancer

Publications

Comprehensive Proteomic Analysis of Colon Cancer Tissue Revealed the Reason for the Worse Prognosis of Right-Sided Colon Cancer and Mucinous Colon Cancer at the Protein Level.

Similar Datasets

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