title: Dickkopf 2 promotes proliferation and invasion via Wnt signaling in prostate cancer.
abstract: Wnt/β-catenin signaling dysregulation is involved in tumorigenesis. Furthermore, epigenetic modification of the Dickkopf (DKK) family (DKK1‑4) has been shown to be important in the regulation of Wnt signaling. However, the functions and mechanism of DKK2 in the development and progression of prostate cancer remain unclear. Therefore, the present study investigated the role of DKK2 in prostate cancer. The mRNA and protein expression levels of DKK2 in prostate cancer tissues and cells were assessed by reverse transcription‑quantitative polymerase chain reaction and western blotting, respectively. The biological function of DKK2 in prostate cancer was investigated using 3‑(4,5‑dimethylthiazol‑2‑yl)-2,5‑diphenyltetrazolium bromide and transwell invasion assays. DKK2 was demonstrated to be upregulated in prostate cancer tissues and cells, and knockdown of DKK2 suppressed cell proliferation and invasion. Furthermore, small interfering RNA targeting DKK2 inhibited the expression of β‑catenin, cyclin D1 and c‑Myc in prostate cancer cells. The present report suggested that DKK2 downregulation suppressed the proliferation and invasion of prostate cancer cells by inhibiting the Wnt/β‑catenin signaling pathway.
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Kuan
authors.initials: K
authors.lastname: Pang
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Ze-Guang
authors.initials: ZG
authors.lastname: Zhou
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Yi-Feng
authors.initials: YF
authors.lastname: Chen
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Ting
authors.initials: T
authors.lastname: Mo
authors.affiliation: Basic Medicine College, Shanghai Jiaotong University, Shanghai 200025, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.affiliation: Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi 537000, P.R. China.
authors.forename: Cheng-Bei
authors.initials: CB
authors.lastname: Liu
mesh_terms: D045744:Cell Line, Tumor; D002465:Cell Movement; D049109:Cell Proliferation; D015870:Gene Expression; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics*; D008297:Male; D011471:Prostatic Neoplasms / Q000235:genetics* / Q000378:metabolism* / Q000473:pathology; D034622:RNA Interference; D034741:RNA, Small Interfering / Q000235:genetics; D014162:Transfection; D060449:Wnt Signaling Pathway
chemical_list: C498622:DKK2 protein, human; D036341:Intercellular Signaling Peptides and Proteins; D034741:RNA, Small Interfering