title: [Study on the expression of the gene deleted in colorectal carcinoma in ovarian carcinoma].
abstract: OBJECTIVE
  The purpose of this study was to explore the relationship between the loss of the gene deleted in colorectal carcinoma (DCC) gene expression in ovarian carcinoma and the transformation, progression of the tumor and its clinicopathological factors.
  
  
  METHODS
  DCC gene mRNA expression were examined by reverse transcription polymerase chain reaction (RT-PCR) in 34 malignant, 10 benign and 10 normal ovarian samples. To clarify the expression of DCC gene by the DNA cloning and the DNA sequencing analysis in normal ovarian sample.
  
  
  RESULTS
  The expression of DCC gene was lost in no normal ovarian tissues, in 2 (2/10) benign lesions, while the loss of DCC gene expression was found in 19 (19/34, 56%) carcinomas (P < 0.05). Similar findings were also noted when subdivision was into serous (14/18) and mucinous (4/11) categories (P < 0.05). The percentage of the loss of DCC gene expression in stage III - IV was 68%, in stage I - II was 22%, as well as 42% in grade I - II and 90% in grade III. 61% of the carcinoma with metastasis presented the loss of DCC gene expression, then there was 33% in which without metastasis.
  
  
  CONCLUSIONS
  In ovarian carcinomas, loss of DCC gene expression was significantly related to the serous phenotype, a high histological grade and a more advanced stage. The results indicated that loss of DCC gene expression may play an important role in ovarian carcinomas and its progression.
authors.affiliation: Department of Obstetrics and Gynecology, Second Affiliated Hospital of Harbin Medical University, Harbin, 150086,China.
authors.forename: Pei-ling
authors.initials: PL
authors.lastname: Li
authors.forename: Mei-mei
authors.initials: MM
authors.lastname: Liu
authors.forename: Jiang
authors.initials: J
authors.lastname: Ni
mesh_terms: D015815:Cell Adhesion Molecules / Q000096:biosynthesis*; D018282:Cystadenocarcinoma, Mucinous / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D018284:Cystadenocarcinoma, Serous / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D000075389:DCC Receptor; D005260:Female; D017353:Gene Deletion; D015972:Gene Expression Regulation, Neoplastic; D016163:Genes, DCC; D006801:Humans; D009367:Neoplasm Staging; D010051:Ovarian Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D012333:RNA, Messenger / Q000235:genetics; D011956:Receptors, Cell Surface; D020133:Reverse Transcriptase Polymerase Chain Reaction; D025521:Tumor Suppressor Proteins / Q000096:biosynthesis*
chemical_list: D015815:Cell Adhesion Molecules; D000075389:DCC Receptor; C501909:DCC protein, human; D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D025521:Tumor Suppressor Proteins