PMID- 30901224 OWN - NLM STAT- MEDLINE DCOM- 20200601 LR - 20200601 IS - 1535-3907 (Electronic) IS - 1535-3893 (Linking) VI - 18 IP - 5 DP - 2019 May 3 TI - Significant Down-Regulation of Urea Cycle Generates Clinically Relevant Proteomic Signature in Hepatocellular Carcinoma Patients with Macrovascular Invasion. PG - 2032-2044 LID - 10.1021/acs.jproteome.8b00921 [doi] AB - Vascular invasion is considered as the critical risk factor of hepatocellular carcinoma (HCC). To reveal the molecular mechanisms underlying macrovascular invasion (MaVI) in HCC, we performed an iTRAQ based proteomic study to identify notably dysregulated proteins from eight HCC patients with differential vascular invasion and further confirmed them in the other 53 HCC patients. Forty-seven proteins were found significantly down-regulated in HCC with MaVI. More importantly, 30 of them were not changed in HCC without MaVI. Gene ontology analysis of these 47 proteins shows the top three enriched biological processes are urea cycle, gluconeogenesis, and arginine biosynthetic process. We validated nine remarkably dysregulated candidates in HCC patients with MaVI by Western blot including eight down-regulated proteins (CPS1, ASS1, ASL, ARG1, BHMT, DMGDH, Annexin A6, and CES1) and one up-regulated protein (CKAP4). Furthermore, dysregulation of CPS1, ASL, and ARG1, key enzymes involved in urea cycle, together with Annexin A6 and CES1, major proteins in regulating cholesterol homeostasis and fatty acid ester metabolism, was verified using immunohistochemical staining. The significant down-regulation of urea cycle generates clinically relevant proteomic signature in HCC patients with macrovascular invasion, which may provide possible insights into the molecular mechanisms of metastasis and new therapeutic targets of HCC. FAU - Cao, Yin AU - Cao Y AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. AD - Department of Hepatobiliary Surgery , The Affiliated Drum Tower Hospital of Nanjing University Medical School , 321 Zhongshan Road , Gulou District, Nanjing 210008 , China. FAU - Ding, WenWen AU - Ding W AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Zhang, JingZi AU - Zhang J AUID- ORCID: 0000-0002-7190-6243 AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Gao, Qi AU - Gao Q AUID- ORCID: 0000-0002-6342-2804 AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Yang, HaoXiang AU - Yang H AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Cao, WangSen AU - Cao W AUID- ORCID: 0000-0001-6209-3482 AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Wang, ZhongXia AU - Wang Z AUID- ORCID: 0000-0001-6333-1999 AD - Department of Hepatobiliary Surgery , The Affiliated Drum Tower Hospital of Nanjing University Medical School , 321 Zhongshan Road , Gulou District, Nanjing 210008 , China. FAU - Fang, Lei AU - Fang L AUID- ORCID: 0000-0002-2582-4845 AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. FAU - Du, RongHui AU - Du R AD - Jiangsu Key Laboratory of Molecular Medicine , Medical School of Nanjing University , 22 Hankou Road , Gulou District, Nanjing 210093 , China. LA - eng PT - Journal Article DEP - 20190329 PL - United States TA - J Proteome Res JT - Journal of proteome research JID - 101128775 RN - 0 (Fatty Acids) RN - 0 (Neoplasm Proteins) RN - 8W8T17847W (Urea) RN - 94ZLA3W45F (Arginine) RN - 97C5T2UQ7J (Cholesterol) SB - IM MH - Adult MH - Aged MH - Arginine/metabolism MH - Blood Vessels/*metabolism/pathology MH - Carcinoma, Hepatocellular/*genetics/metabolism/mortality/pathology MH - Cholesterol/metabolism MH - Fatty Acids/metabolism MH - Female MH - Gene Expression Profiling MH - *Gene Expression Regulation, Neoplastic MH - Gene Ontology MH - Gluconeogenesis/genetics MH - Humans MH - Liver/metabolism/pathology MH - Liver Neoplasms/*genetics/metabolism/mortality/pathology MH - Male MH - Middle Aged MH - Molecular Sequence Annotation MH - Neoplasm Invasiveness MH - Neoplasm Proteins/*genetics/metabolism MH - Neoplasm Staging MH - Proteomics/methods MH - Urea/*metabolism OTO - NOTNLM OT - HCC OT - iTRAQ OT - macorvascular invasion OT - molecular mechanisms OT - proteomic signature OT - urea cycle EDAT- 2019/03/23 06:00 MHDA- 2020/06/02 06:00 CRDT- 2019/03/23 06:00 PHST- 2019/03/23 06:00 [pubmed] PHST- 2020/06/02 06:00 [medline] PHST- 2019/03/23 06:00 [entrez] AID - 10.1021/acs.jproteome.8b00921 [doi] PST - ppublish SO - J Proteome Res. 2019 May 3;18(5):2032-2044. doi: 10.1021/acs.jproteome.8b00921. Epub 2019 Mar 29.