[Proteomic analysis on portal vein tumor thrombus-associated proteins for hepatocellular carcinoma]

A comparative proteomic approach was used to analyze proteins relevant to portal vein tumor thrombus forming.

proteins extracted from five pairs of matched primary tumor/tumor thrombus samples in the same patient were separated by two-dimensional gel electrophoresis (2-DE). Selected proteins exhibiting statistically significant alternations were identified by mass spectrometry. Western blotting was further performed to examine the expression of the candidate proteins.

There were 20 significant proteins were identified in total, Among the 20 spots, 12 proteins were up-regulated proteins in primary tumor tissue, including Galectin-1, HMGBI, peroxiredoxin 1, Cyclophilin B, PCNA. whereas 8 were up-regulated proteins in tumor thrombus samples, including Annexin V, Triosephosphate Isomerase. Western blotting Confirmed the difference of Annexin V on protein level.

There are many proteins associated with the formation of PVTT in HCC. The overexpression of Annexin V may serve as a biomarker for early detection and therapeutic targets to HCC with PVTT.