title: SIRT-1expression is associated with expression of NANOG in patients with colorectal adenocarcinoma.
abstract: OBJECTIVE
  The study aimed to investigate the quantitative expression of NANOG, p38 α , NCF2, ELF and TGF-β genes in patients with colorectal adenocarcinoma, adenoma and normal colonic tissue and their correlation with SIRT-1 protein level expression.
  
  
  METHODS
  This study enrolled one hundred sixty seven patients; group A: 87 patients with colonoscopic findings of no adenoma or adenocarcinoma and group B: 80 patients with colorectal mass. Consecutive colonoscopic examinations were conducted, and tissue samples were taken from the colonic lesions/masses. Total RNA was isolated and mRNA expression level of NANOG, mitogen activated p38α , Neutrophil Cytosol Factor 2 (NCF2), Embryonic Liver Fodrin (ELF) and Transforming Growth Factor Beta (TGF-β) genes were quantified by qRT-PCR. Sirt-1 protein expression level was assessed by quantitative western blot.
  
  
  RESULTS
  There were significantly high level of mRNA transcripts expression of the genes studied in patients with adenocarcinoma and adenoma compared with normal tissue (P value < 0.01), NANOG, NCF2, ELF and TGF-β at a cut of > 0.314, > 0.392, 0.349 and 0.333 respectively showed sensitivity (96.5%, 98.8%, 95.3%, 98.8%) and specificity of (95.3%, 92.6%, 89.5%, 93.8%) respectively in diagnosing colonic adenocarcinoma. Sirt-1 protein level was significantly highly expressed in colorectal adenocarcinoma compared to normal and adenoma colonic tissue and positively correlated with NANOG.
  
  
  CONCLUSIONS
  Over expression of NANOG, p38α , NCF2, ELF and TGF-β genes in both cases of adenocarcinoma and adenoma could have a diagnostic value. SIRT-1 and NANOG are high correlated biological markers for diagnosis and prognosis follow up in patients with adenocarcinoma.
authors.affiliation: Biochemistry Department, Assiut University, Assiut, Egypt.
authors.forename: Amany
authors.initials: A
authors.lastname: Osama
authors.affiliation: Medical Biochemistry and Molecular Biology Department, Cairo University, Cairo, Egypt.
authors.forename: Dina
authors.initials: D
authors.lastname: Sabry
authors.affiliation: Tropical Medicine and Gastroenterology Department, Assiut University, Assiut, Egypt.
authors.forename: Sahar M
authors.initials: SM
authors.lastname: Hassany
authors.affiliation: Tropical Medicine and Gastroenterology Department, Assiut University, Assiut, Egypt.
authors.forename: Soha Saoud
authors.initials: SS
authors.lastname: Abdelmoneim
authors.affiliation: Internal Medicine Department, Assiut University, Assiut, Egypt.
authors.forename: Abeer
authors.initials: A
authors.lastname: Sabry
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000235:genetics*; D000328:Adult; D000368:Aged; D015415:Biomarkers; D020685:Colonoscopes; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000235:genetics*; D004843:Epistasis, Genetic; D005260:Female; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008297:Male; D008875:Middle Aged; D000071317:Nanog Homeobox Protein / Q000235:genetics* / Q000378:metabolism; D060787:Neoplasm Grading; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics; D056564:Sirtuin 1 / Q000235:genetics* / Q000378:metabolism
chemical_list: D015415:Biomarkers; D000071317:Nanog Homeobox Protein; D012333:RNA, Messenger; D056564:Sirtuin 1
keywords: ELF; NANOG; NCF2; SIRT-I; TGF-β; colon adenocarcinoma; p38α