title: SKP2/P27Kip1 pathway is associated with Advanced Ovarian Cancer in Saudi Patients.
abstract: BACKGROUND
  Ovarian cancer is the most common gynecological malignancy and constitutes the fifth leading cause of female cancer death. Some biological parameters have prognostic roles in patients with advanced ovarian cancer and their expression may contribute to tumor progression. The aim of this study was to investigate the potential prognostic value of SKP2, genes P27Kip1, K-ras, c-Myc, COX2 and HER2 genes expression in ovarian cancer.
  
  
  METHODS
  This study was performed on two hundred formalin fixed paraffin embedded ovarian cancer and normal adjacent tissues (NAT). Gene expression levels were assessed using real time PCR and Western blotting.
  
  
  RESULTS
  Elevated expression levels of SKP2, K-ras, c-Myc, HER2 and COX2 genes were observed in 61.5% (123/200), 92.5% (185/200), 74% (148/200), 96 % (192/200), 90% (180/200) and 78.5% (157/200) of cancer tissues, respectively. High expression of SKP2 and down-regulation of P27 was associated with advanced stages of cancer.
  
  
  CONCLUSIONS
  The association between high expression of c-Myc and SKP2 with low expression of P27 suggested that the Skp2-P27 pathway may play an important role in ovarian carcinogenesis. Reduced expression of P27 is associated with advanced stage of cancer and can be used as a biological marker in clinical routine assessment and management of women with advanced ovarian cancer.
authors: Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh, Kingdom of Saudi Arabia E-mail : shabanah@ksu.edu.sa.
authors: Mohamed M
authors: MM
authors: Hafez
authors: Ali R
authors: AR
authors: Alhoshani
authors: Khaled A
authors: KA
authors: Al-Hosaini
authors: Shakir D
authors: SD
authors: Alsharari
authors: Salim S
authors: SS
authors: Al Rejaie
authors: Mohamed M
authors: MM
authors: Sayed-Ahmed
authors: Othman A
authors: OA
authors: Al-Shabanah
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017209:Apoptosis; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism*; D015153:Blotting, Western; D049109:Cell Proliferation; D050760:Cyclin-Dependent Kinase Inhibitor p27 / Q000235:genetics / Q000378:metabolism*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D010051:Ovarian Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D044786:S-Phase Kinase-Associated Proteins / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction; D014407:Tumor Cells, Cultured; D055815:Young Adult
chemical_list: D014408:Biomarkers, Tumor; C436291:CDKN1B protein, human; D012333:RNA, Messenger; D044786:S-Phase Kinase-Associated Proteins; D050760:Cyclin-Dependent Kinase Inhibitor p27