Quantitative proteomics reveals that distant recurrence-associated protein R-Ras and Transgelin predict post-surgical survival of colorectal cancer Stage III patients

ABSTRACT: Surgical resection is the major clinical intervention for Stage III colorectal cancer (CRC) currently. However, as much as 30.8% of the patients who had ever taken curative resection came out of recurrence eventually. Therefore, to facilitate formulating effective treatment plans, there is an intense demand for Stage III CRC post-surgical prognostic biomarkers. In this study, we identified total 146 differentially expressed proteins (DEPs) associated with poor prognosis in Stage III CRC patients with TMT-based quantitative mass spectrometry (MS). In these DEPs, the protein expression level of R-Ras and Transgelin were tested with immunohistochemistry (IHC) of 192 individual specimens. Further Kaplan-Meier analysis revealed that the level of R-Ras and Transgelin is associated with patients’ 5-year overall survival (OS) and disease-free survival (DFS) significantly, and multivariate Cox-regression analyses revealed that R-Ras and Transgelin are independent prognostic factors for OS and DFS respectively. In conclusion, our study presents that R-Ras and Transgelin are potential post-surgical prognostic biomarkers of Stage III CRC.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Colon

DISEASE(S): Colon Cancer

SUBMITTER: Wei Ge  

LAB HEAD: wei ge

PROVIDER: PXD002903 | Pride | 2016-06-20

REPOSITORIES: Pride