PURPOSE: CKS2 was identified as an upregulated gene in gastric cancer via our DNA microarray. This study was to verify the upregulation of CKS2 in many gastric cancer patients and to examine the CKS2-mediated cellular response. METHODS: CKS2 upregulation was analyzed using reverse transcriptase PCR, real-time PCR, and immunohistochemical and clinicopathological analyses. GFP-CKS2 or CKS2-siRNA was used to analyze the cellular localization and proliferation. RESULTS: The strong upregulation of mRNA and protein levels of CKS2 was identified. In CKS2-overexpressing cells, tumor suppressor p53 and p21(cip1) were downregulated and cell growth was increased. In contrast, CKS2-siRNA-transfected cells showed an increased tumor suppressor expression and decreased cell growth. CONCLUSIONS: We showed that CKS2 was significantly upregulated in gastric cancers and a high level of CKS2 was highly correlated with histologic tumor differentiation and pathological grade of the tumor size, lymph node, and metastasis stage. We suggest that the cell cycle regulator CKS2 might be deeply involved in gastric cancer progression.
PURPOSE:CKS2 was identified as an upregulated gene in gastric cancer via our DNA microarray. This study was to verify the upregulation of CKS2 in many gastric cancerpatients and to examine the CKS2-mediated cellular response. METHODS:CKS2 upregulation was analyzed using reverse transcriptase PCR, real-time PCR, and immunohistochemical and clinicopathological analyses. GFP-CKS2 or CKS2-siRNA was used to analyze the cellular localization and proliferation. RESULTS: The strong upregulation of mRNA and protein levels of CKS2 was identified. In CKS2-overexpressing cells, tumor suppressor p53 and p21(cip1) were downregulated and cell growth was increased. In contrast, CKS2-siRNA-transfected cells showed an increased tumor suppressor expression and decreased cell growth. CONCLUSIONS: We showed that CKS2 was significantly upregulated in gastric cancers and a high level of CKS2 was highly correlated with histologic tumor differentiation and pathological grade of the tumor size, lymph node, and metastasis stage. We suggest that the cell cycle regulator CKS2 might be deeply involved in gastric cancer progression.
Authors: Donna E Hansel; Surajit Dhara; RuChih C Huang; Raheela Ashfaq; Mari Deasel; Yutaka Shimada; Harold S Bernstein; John Harmon; Malcolm Brock; Arlene Forastiere; M Kay Washington; Anirban Maitra; Elizabeth Montgomery Journal: Am J Surg Pathol Date: 2005-03 Impact factor: 6.394
Authors: I Urbanowicz-Kachnowicz; N Baghdassarian; C Nakache; D Gracia; Y Mekki; P A Bryon; M Ffrench Journal: Int J Cancer Date: 1999-07-02 Impact factor: 7.396
Authors: Charles H Spruck; Maria P de Miguel; Adrian P L Smith; Aimee Ryan; Paula Stein; Richard M Schultz; A Jeannine Lincoln; Peter J Donovan; Steven I Reed Journal: Science Date: 2003-04-25 Impact factor: 47.728
Authors: Hanna-Stina Martinsson-Ahlzén; Vasco Liberal; Björn Grünenfelder; Susana R Chaves; Charles H Spruck; Steven I Reed Journal: Mol Cell Biol Date: 2008-07-14 Impact factor: 4.272
Authors: Michael Stanbrough; Glenn J Bubley; Kenneth Ross; Todd R Golub; Mark A Rubin; Trevor M Penning; Phillip G Febbo; Steven P Balk Journal: Cancer Res Date: 2006-03-01 Impact factor: 12.701