title: Gene expression profiling in TWIST-depleted gastric cancer cells.
abstract: TWIST is an important transcription factor during embryonic development and has recently been found to promote the epithelial-mesenchymal transition (EMT) phenomenon seen during the initial steps of tumor metastasis. To further investigate the potential targets and interacting genes of TWIST in human gastric cancer, we performed microarray analysis to compare the gene expression profiles in HGC-27 cells, with or without small interfering RNA (siRNA)-mediated depletion of TWIST. Our results showed that NF1, RAP1A, SRPX, RBL2, PFDN4, ILK, F2R, ERBB3, and MYB were up-regulated, whereas AKR1C2, FOS, GDF15, NR2F1, ATM, and CTPS were down-regulated after TWIST depletion. Moreover, TWIST-depleted HGC-27 cells showed a reversal of the morphologic and molecular changes associated with EMT. These results provide evidence that TWIST regulates the expression of several genes involved in the differentiation, adhesion, and proliferation of gastric cancer cells. The role of TWIST in the development of certain types of gastric cancer is discussed.
authors.affiliation: The Pathology Department, Affiliated Tumor Hospital of Harbin Medical University, Harbin, China.
authors.forename: Mei-Yan
authors.initials: MY
authors.lastname: Feng
authors.forename: Kuan
authors.initials: K
authors.lastname: Wang
authors.forename: Qing-Tao
authors.initials: QT
authors.lastname: Shi
authors.forename: Xiu-Wen
authors.initials: XW
authors.lastname: Yu
authors.forename: Jing-Shu
authors.initials: JS
authors.lastname: Geng
mesh_terms: D001483:Base Sequence; D002448:Cell Adhesion / Q000235:genetics; D002454:Cell Differentiation / Q000235:genetics; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D017931:DNA Primers / Q000235:genetics; D004848:Epithelium / Q000473:pathology; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008648:Mesoderm / Q000473:pathology; D009687:Nuclear Proteins / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D034741:RNA, Small Interfering / Q000235:genetics; D013274:Stomach Neoplasms / Q000209:etiology / Q000235:genetics* / Q000378:metabolism* / Q000473:pathology; D051879:Twist-Related Protein 1 / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*
chemical_list: D017931:DNA Primers; D009687:Nuclear Proteins; D034741:RNA, Small Interfering; C103173:TWIST1 protein, human; D051879:Twist-Related Protein 1