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Title: Expression of desmosomal proteins in acantholytic squamous cell carcinoma of the skin
Issue Date: 2015
Publisher: F. Hernández y Juan F. Madrid. Universidad de Murcia: Departamento de Biología Celular e Histología
Citation: Histology and histopathologi, Vol. 30, nº 8 (2015)
ISSN: 1699-5848
Related subjects: CDU::5 - Ciencias puras y naturales::57 - Biología::576 - Biología celular y subcelular. Citología
Keywords: Squamous cell carcinoma
Desmosomal proteins
Abstract: Acantholytic (adenoid) squamous cell carcinoma (ASCC) is a subtype of squamous cell carcinoma (SCC) in which neoplastic tumour cells form gland-like structures. Little is known about the pathogenetic mechanisms of ASCC. We hypothesised that they may be related to the compositon of desmosomes. We analysed the immunohistochemical expression of desmosomal proteins in 5 cases of ASCC of the skin, in comparison to 5 cases of conventional SCC of the skin. The most consistent findings were loss of desmoglein 1 (DSG 1), desmoglein 3 (DSG3), desmocollin 1 (DSC1), desmocollin 2 (DSC2), desmocollin 3 (DSC 3), and plakophilin 1 (PKP 1), and decreased expression of desmoplakin 1 (DP 1) and plakoglobin (PG). In conventional well to moderately differentiated SCC, the expression of desmosomal proteins was decreased, but membranous staining was mostly preserved with patterns similar to normal epidermis. Our results suggest that loss of desmosomal cadherins and decreased expression of desmosomal plaque proteins might be responsible for the formation of gland-like structures in ASCC. It seems that desmosomal cadherins, which correspond to the transmembrane core of desmosomes, are predominantly affected in ASCC, while DP 1 and PG, which correspond to cytoplasmic plaque of desmosomes, probably play a lesser role in maintenance of tumour cell cohesion. Our results also indicate that, in addition to previously described verrucous and spindle cell carcinoma, ASCC is another subtype of SCC with a characteristic expression pattern of desmosomal proteins.
Primary author: Jurčić, Vesna
Kukovič, Jernej
Zidar, Nina
Document type: info:eu-repo/semantics/article
Number of pages / Extensions: 9
Rights: info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 International
Appears in Collections:Vol.30, nº8 (2015)

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