title: [Analysis of angiogenesis and lymphangiogenesis signaling pathways based on gene expression patterns of nasopharyngeal carcinoma].
abstract: OBJECTIVE
  To pinpoint angiogenesis- and lymphangiogenesis-related genes in nasopharyngeal carcinoma (NPC).
  
  
  METHODS
  Based on the reported microarray data which identified 831 differentially expressed genes in NPC tissues and the latest genomic information, we selected 246 genes for analysis with the smallest differential expression threshold of 260. Gene function analysis and network construction was carried out based on literature mining for analysis of the signaling pathways related with angiogenesis and lymphangiogenesis of NPC.
  
  
  RESULTS
  The 246 genes were related with such keywords as nasopharyngeal carcinoma, EB virus, metastasis, angiogenesis, lymphangiogenesis, and invasion. Particularly, we found that up to 52 genes were associated with angiogenesis (P=0.00001), and 19 genes form 12 related gene pairs (P=0.0042). Twenty-one lymphangiogenesis-related genes were identified (P=0.00001), and 6 of these genes formed a gene network (P=0.0226). Eight genes, including PTGS2, participated in the nuclear factor-κB (NF-κB) pathway, which was closely related to angiogenesis in small cell lung cancer (P=7.87E-07). Five genes, including STAT1 and CXCL10, participated in toll-like receptor signaling pathway (P=0.00176).
  
  
  CONCLUSIONS
  PTGS2 and NF-κB promote angiogenesis of NPC, and the role of toll-like receptor signaling pathway in lymphangiogenesis warrants further investigation.
authors.affiliation: First Clinical Medical College, Southern Medical University, Guangzhou, China. ponymjy@gmail.com
authors.forename: Jiayi
authors.initials: J
authors.lastname: Ma
authors.forename: Kun
authors.initials: K
authors.lastname: Huang
authors.forename: Zhongxi
authors.initials: Z
authors.lastname: Huang
mesh_terms: D002277:Carcinoma; D002294:Carcinoma, Squamous Cell / Q000098:blood supply / Q000235:genetics* / Q000473:pathology; D051546:Cyclooxygenase 2 / Q000378:metabolism; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D042583:Lymphangiogenesis; D052002:NF-kappa B p50 Subunit / Q000378:metabolism; D000077274:Nasopharyngeal Carcinoma; D009303:Nasopharyngeal Neoplasms / Q000098:blood supply / Q000235:genetics* / Q000473:pathology; D009389:Neovascularization, Pathologic; D020411:Oligonucleotide Array Sequence Analysis; D015398:Signal Transduction; D051193:Toll-Like Receptors / Q000378:metabolism
chemical_list: D052002:NF-kappa B p50 Subunit; C489548:NFKB1 protein, human; D051193:Toll-Like Receptors; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human