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- Mercedes Gomez-Morales, Miguel Camara-Pulido, Teresa Miranda-Leon, Abel Sanchez-Palencia, Laura Boyero, Jose Antonio Gomez-Capilla, and Esther Farez-Vidal.
- Chest. 2014 Mar 1;145(3 Suppl):333A.
Session TitleLung Cancer Posters ISESSION TYPE: Poster PresentationsPRESENTED ON: Saturday, March 22, 2014 at 01:15 PM - 02:15 PMPURPOSE: Immunohistochemistry is a highly valuable and widely used tool in the sub-typing of lung carcinomas, which would be assisted by the availability of lung-specific tumour markers. The importance of cell-cell junction proteins (including armadillo proteins) in tumour biology is known, but there is limited knowledge on specific intercellular adhesion proteins.MethodsWe report on the immunohistochemical localization of plakophilin-1, keratin-15 and desmoglein-3 intercellular adhesion proteins in samples from 75 primary non-small cell lung cancers in non-treated patients.ResultsThe staining pattern of these proteins differed between squamous-cell carcinomas (SCC) and adenocarcinomas, with no membrane staining in the latter. Membrane staining by all three proteins was characteristic of squamous-cell carcinomas of the lung in our study. In squamous cell carcinomas, we observed a relationship between the presence/absence of these proteins in the membrane and the differentiation grade, with a more intense staining in better differentiated areas.ConclusionsThe staining pattern of these proteins differed between squamous-cell carcinomas (SCC) and adenocarcinomas, with no membrane staining in the latter. Membrane staining by all three proteins was characteristic of squamous-cell carcinomas of the lung in our study. In squamous cell carcinomas, we observed a relationship between the presence/absence of these proteins in the membrane and the differentiation grade, with a more intense staining in better differentiated areas.Clinical ImplicationsUse of desmosomal plaque related protein for diagnosis of non-small cell lung cancerDisclosureThe following authors have nothing to disclose: Mercedes Gomez-Morales, Miguel Camara-Pulido, Teresa Miranda-Leon, Abel Sanchez-Palencia, Laura Boyero, Jose Antonio Gomez-Capilla, Esther Farez-VidalNo Product/Research Disclosure Information.
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