Proteomic signatures of infiltrative gastric cancer by proteomic and bioinformatic analysis  

作　　者：Li-Hua Zhang Hui-Qin Zhuo Jing-Jing Hou Yang Zhou Jia Cheng Jian-Chun Cai 

机构地区：[1]Department of Gastrointestinal Surgery,Zhongshan Hospital of Xiamen University,School of Medicine,Xiamen University,Xiamen 361004,Fujian Province,China [2]Institute of Gastrointestinal Oncology,Zhongshan Hospital of Xiamen University,School of Medicine,Xiamen University,Xiamen 361004,Fujian Province,China [3]Xiamen Municipal Key Laboratory of Gastrointestinal Oncology,Xiamen 361004,Fujian Province,China

出　　处：《World Journal of Gastrointestinal Oncology》2022年第11期2097-2107,共11页世界胃肠肿瘤学杂志（英文版）（电子版）

基　　金：Supported by National Natural Science Foundation of China,No.81871979;Natural Science Foundation of Fujian Province,No.2021J02056,No.2021J05276 and No.2020CXB048;Medical and Health Sciences Foundation of Xiamen,No.3502Z20199171 and No.3502Z20204002.

摘　　要：BACKGROUND Proteomic signatures of Ming's infiltrative gastric cancer(IGC)remain unknown.AIM To elucidate the molecular characteristics of IGC at the proteomics level.METHODS Twelve pairs of IGC and adjacent normal tissues were collected and their proteomes were analyzed by high performance liquid chromatography tandem mass spectrometry.The identified peptides were sequenced de novo and matched against the SwissProt database using Maxquant software.The differentially expressed proteins(DEPs)were screened using|log2(Fold change)|>1 and P-adj<0.01 as the thresholds.The expression levels of selected proteins were verified by Western blotting.The interaction network of the DEPs was constructed with the STRING database and visualized using Cytoscape with cytoHubba software.The DEPs were functionally annotated using clusterProfiler,STRING and DAVID for Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways.P<0.05 was considered statistically significant.RESULTS A total of 7361 DEPs were identified,of which 94 were significantly up-regulated and 223 were significantly down-regulated in IGC relative to normal gastric tissues.The top 10 up-regulated proteins were MRTO4,BOP1,PES1,WDR12,BRIX1,NOP2,POLR1C,NOC2L,MYBBP1A and TSR1,and the top 10 down-regulated proteins were NDUFS8,NDUFS6,NDUFA8,NDUFA5,NDUFC2,NDUFB8,NDUFB5,NDUFB9,UQCRC2 and UQCRC1.The up-regulated proteins were enriched for 9 biological processes including DNA replication,ribosome biogenesis and initiation of DNA replication,and the cellular component MCM complex.Among the down-regulated proteins,17 biological processes were enriched,including glucose metabolism,pyruvic acid metabolism and fatty acidβ-oxidation.In addition,the mitochondrial inner membrane,mitochondrial matrix and mitochondrial proton transport ATP synthase complex were among the 6 enriched cellular components,and 11 molecular functions including reduced nicotinamide adenine dinucleotide dehydrogenase activity,acyl-CoA dehydrogenase activity and nicotinamide adenine dinucleot

关 键 词：Infiltrative gastric cancer PROTEOMICS Molecular biological characteristics Ming's classification Bioinformatic analysis 

分 类 号：R735.2[医药卫生—肿瘤]