Expression pattern of class I histone deacetylases in vulvar intraepithelial neoplasia and vulvar cancer: a tissue microarray study

BMC Cancer

Research Article

Mathias K Fehr¹  Konstantin J Dedes²  Nicolas Samartzis²  Eleftherios P Samartzis²  Patrick Imesch²  André Fedier²  Daniel Fink²  Rosmarie Caduff³ 

[1]Department of Gynecology and Obstetrics, Hospital of Frauenfeld, 8051, Frauenfeld, Switzerland

[2]Department of Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland

[3]Department of Pathology, University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland

关键词: Histone deacetylase;    epigenetics;    vulvar intraepithelial neoplasia;    vulvar squamous cell cancer;    tissue microarray;    immunohistochemistry;   

DOI  :  10.1186/1471-2407-11-463

 received in 2011-01-28, accepted in 2011-10-26,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundEpigenetic regulation is an important mechanism leading to cancer initiation and promotion. Histone acetylation by histone deacetylases (HDACs) represents an important part of it. The development of HDAC inhibitors has identified the utility of HDACs as a therapeutic target. Little is known about the epigenetic regulation of vulvar intraepithelial neoplasia (VIN) and vulvar squamous cell cancer (VSCC). In this study, the expression of class I HDACs (HDAC 1, 2 and 3) was compared in a series of VIN and VSCC tissues.MethodsA tissue micro array (TMA) with specimens from 106 patients with high-grade VIN and 59 patients with vulvar cancer was constructed. The expression of HDACs 1, 2 and 3 were analyzed with immunohistochemistry (IHC). The nuclear expression pattern was evaluated in terms of intensity and percentage of stained nuclei and was compared between vulvar preinvasive lesions and vulvar cancer.ResultsHDAC 2 expression was significantly higher in VIN than in VSCC (p < 0.001, Fisher's test). Also, 88.7% (n = 94/106) of VIN samples and only 54.5% (n = 31/57) of VSCC samples were scored at the maximum level. Conversely, HDAC 3 expression was significantly higher in VSCC (93%, 53/57) compared to VIN (73.6%, 78/106, p = 0.003), whereas only a small difference in the expression of HDAC 1 was found between these two entities of vulvar neoplasia.ConclusionsThese results suggest that epigenetic regulation plays a considerable role in the transformation of VIN to invasive vulvar neoplasia.

【 授权许可】

Unknown   
© Samartzis et al; licensee BioMed Central Ltd. 2011. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.