title: Gene expression profiles at different stages of human esophageal squamous cell carcinoma.
abstract: OBJECTIVE
  To characterize the gene expression profiles in different stages of carcinogenesis of esophageal epithelium.
  
  
  METHODS
  A microarray containing 588 cancer related genes was employed to study the gene expression profile at different stages of esophageal squamous cell carcinoma including basal cell hyperplasia, high-grade dysplasia, carcinoma in situ, early and late cancer. Principle component analysis was performed to search the genes which were important in carcinogenesis.
  
  
  RESULTS
  More than 100 genes were up or down regulated in esophageal epithelial cells during the stages of basal cell hyperplasia, high-grade dysplasia, carcinoma in situ, early and late cancer. Principle component analysis identified a set of genes which may play important roles in the tumor development. Comparison of expression profiles between these stages showed that some genes, such as P160ROCK, JNK2, were activated and may play an important role in early stages of carcinogenesis.
  
  
  CONCLUSIONS
  These findings provided an esophageal cancer-specific and stage-specific expression profiles, showing that complex alterations of gene expression underlie the development of malignant phenotype of esophageal cancer cells.
authors.affiliation: National Laboratory of Molecular Oncology, Cancer Institute, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100021, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
authors.forename: Li-Qun
authors.initials: LQ
authors.lastname: Zhao
authors.forename: Mo-Miao
authors.initials: MM
authors.lastname: Xiong
authors.forename: Xiu-Qin
authors.initials: XQ
authors.lastname: Wang
authors.forename: Guan-Rui
authors.initials: GR
authors.lastname: Yang
authors.forename: Zong-Liang
authors.initials: ZL
authors.lastname: Qiu
authors.forename: Min
authors.initials: M
authors.lastname: Wu
authors.forename: Zhi-Hua
authors.initials: ZH
authors.lastname: Liu
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000473:pathology; D002471:Cell Transformation, Neoplastic; D004938:Esophageal Neoplasms / Q000235:genetics* / Q000473:pathology; D020869:Gene Expression Profiling; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D048056:Mitogen-Activated Protein Kinase 9; D020928:Mitogen-Activated Protein Kinases / Q000235:genetics / Q000378:metabolism; D020411:Oligonucleotide Array Sequence Analysis; D017346:Protein Serine-Threonine Kinases / Q000235:genetics / Q000378:metabolism; D011897:Random Allocation; D054460:rho-Associated Kinases
chemical_list: D047908:Intracellular Signaling Peptides and Proteins; D048056:Mitogen-Activated Protein Kinase 9; D017346:Protein Serine-Threonine Kinases; D054460:rho-Associated Kinases; D020928:Mitogen-Activated Protein Kinases