title: Overexpression of Rab25 promotes hepatocellular carcinoma cell proliferation and invasion.
abstract: Rab25 was reported to be associated with several human cancers and malignant biological behavior of cancer cells. The goal of the present study was to determine its expression pattern and biological function in human hepatocellular carcinoma (HCC). We examined Rab25 protein in 92 cases of HCC tissues and 3 HCC cell lines. The results showed that Rab25 was upregulated in HCC tissues and cells compared with normal liver tissues and cell line. Rab25 overexpression correlated with advanced tumor stage and nodal metastasis. Rab25 small interfering RNA (siRNA) was employed in Bel7402 and SK-Hep-1 cell lines. Cell Counting Kit-8 (CCK-8) assay and colony formation assay showed that Rab25 depletion blocked cell growth rate and inhibited colony formation ability. Transwell assay showed that Rab25 depletion negatively regulated the invading ability of HCC cells. To explore the possible mechanisms, we checked several signaling pathways and found that Rab25 depletion downregulated AKT phosphorylation. In addition, luciferase reporter assay showed that Rab25 depletion inhibited the Wnt signaling pathway and its target genes such as cyclin D1, c-myc, and MMP7. In conclusion, Rab25 is overexpressed in human HCC and contributes to cancer cell proliferation and invasion possibly through regulation of the Wnt signaling pathway.
authors.affiliation: Department of Surgery, The Affiliated Shengjing Hospital of China Medical University, Sanhao Street 36, Shenyang, 110004, Liaoning Province, People's Republic of China. gengdh_sj@163.com.
authors.forename: Donghua
authors.initials: D
authors.lastname: Geng
authors.affiliation: Department of Surgery, The Affiliated Shengjing Hospital of China Medical University, Sanhao Street 36, Shenyang, 110004, Liaoning Province, People's Republic of China.
authors.forename: Wenyan
authors.initials: W
authors.lastname: Zhao
authors.affiliation: Department of Surgery, The Affiliated Shengjing Hospital of China Medical University, Sanhao Street 36, Shenyang, 110004, Liaoning Province, People's Republic of China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Department of Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, People's Republic of China.
authors.forename: Jingang
authors.initials: J
authors.lastname: Liu
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000473:pathology*; D002455:Cell Division; D045744:Cell Line, Tumor; D005260:Female; D056945:Hep G2 Cells; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009363:Neoplasm Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D010766:Phosphorylation; D011499:Protein Processing, Post-Translational; D051057:Proto-Oncogene Proteins c-akt / Q000378:metabolism; D034622:RNA Interference; D034741:RNA, Small Interfering / Q000235:genetics; D015398:Signal Transduction / Q000235:genetics*; D014410:Tumor Stem Cell Assay; D060449:Wnt Signaling Pathway / Q000235:genetics; D020691:rab GTP-Binding Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*
chemical_list: D009363:Neoplasm Proteins; D034741:RNA, Small Interfering; C509763:Rab25 protein, human; C494918:AKT1 protein, human; D051057:Proto-Oncogene Proteins c-akt; D020691:rab GTP-Binding Proteins
keywords: Hepatocellular carcinoma; Rab25; Wnt