Ouellet V, Ling TH, Normandin K, Madore J, Lussier C, Barrès V, Bachvarov D, Rancourt C, Tonin PN, Provencher DM, Mes-Masson AM. Immunohistochemical profiling of benign, low malignant potential and low grade serous epithelial ovarian tumors.
BMC Cancer 2008;
8:346. [PMID:
19032793 PMCID:
PMC2610034 DOI:
10.1186/1471-2407-8-346]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Accepted: 11/26/2008] [Indexed: 12/20/2022] Open
Abstract
Background
Serous epithelial ovarian tumors can be subdivided into benign (BOV), low malignant potential (LMP) or borderline and invasive (TOV) tumors. Although the molecular characteristics of serous BOV, LMP and low grade (LG) TOV tumors has been initiated, definitive immunohistochemical markers to distinguish between these tumor types have not been defined.
Methods
In the present study, we used a tissue array composed of 27 BOVs, 78 LMPs and 23 LG TOVs to evaluate the protein expression of a subset of selected candidates identified in our previous studies (Ape1, Set, Ran, Ccne1 and Trail) or known to be implicated in epithelial ovarian cancer disease (p21, Ccnb1, Ckd1).
Results
Statistically significant difference in protein expression was observed for Ccnb1 when BOV tumors were compared to LMP tumors (p = 0.003). When BOV were compared to LG TOV tumors, Trail was significantly expressed at a higher level in malignant tumors (p = 0.01). Expression of p21 was significantly lower in LG tumors when compared with either BOVs (p = 0.03) or LMPs (p = 0.001). We also observed that expression of p21 was higher in LMP tumors with no (p = 0.02) or non-invasive (p = 0.01) implants compared to the LMP associated with invasive implants.
Conclusion
This study represents an extensive analyse of the benign and highly differentiated ovarian disease from an immunohistochemical perspective.
Collapse