title: Identification of NDRG1-regulated genes associated with invasive potential in cervical and ovarian cancer cells.
abstract: N-myc downstream regulated gene 1 (NDRG1) is an important gene regulating tumor invasion. In this study, shRNA technology was used to suppress NDRG1 expression in CaSki (a cervical cancer cell line) and HO-8910PM (an ovarian cancer cell line). In vitro assays showed that NDRG1 knockdown enhanced tumor cell adhesion, migration and invasion activities without affecting cell proliferation. cDNA microarray analysis revealed 96 deregulated genes with more than 2-fold changes in both cell lines after NDRG1 knockdown. Ten common upregulated genes (LPXN, DDR2, COL6A1, IL6, IL8, FYN, PTP4A3, PAPPA, ETV5 and CYGB) and one common downregulated gene (CLCA2) were considered to enhance tumor cell invasive activity. BisoGenet network analysis indicated that NDRG1 regulated these invasion effector genes/proteins in an indirect manner. Moreover, NDRG1 knockdown also reduced pro-invasion genes expression such as MMP7, TMPRSS4 and CTSK. These results suggest that regulation of invasion and metastasis by NDRG1 is a highly complicated process.
authors.affiliation: Department of Pathology, The First People's Hospital, Shanghai Jiaotong University, Shanghai, China. zhaog69@sjtu.edu.cn
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.forename: Jiawei
authors.initials: J
authors.lastname: Chen
authors.forename: Yanqiu
authors.initials: Y
authors.lastname: Deng
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
authors.forename: Jiwei
authors.initials: J
authors.lastname: Zhu
authors.forename: Zhenzhong
authors.initials: Z
authors.lastname: Feng
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Lv
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhao
mesh_terms: D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism*; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D055785:Gene Knockdown Techniques; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics / Q000378:metabolism*; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis; D009363:Neoplasm Proteins / Q000235:genetics*; D010051:Ovarian Neoplasms / Q000235:genetics / Q000473:pathology*; D002583:Uterine Cervical Neoplasms / Q000235:genetics / Q000473:pathology*; D000099259:N-myc Downstream-Regulated Gene 1 Protein
chemical_list: D018797:Cell Cycle Proteins; D047908:Intracellular Signaling Peptides and Proteins; D009363:Neoplasm Proteins; D000099259:N-myc Downstream-Regulated Gene 1 Protein