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Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus

Background: Granular cell tumors (GCT) are rare neoplasms of Schwann cell origin occurring in the skin and in other organs. The etiopathogenesis of GCT is yet poorly understood. Connexin 43 (Cx43) is the most broadly expressed gap junction protein in humans, the tumoral role of which has been invest...

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Autores principales: Kneitz, Hermann, Frings, Verena, Kircher, Stefan, Goebeler, Matthias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10296831/
https://www.ncbi.nlm.nih.gov/pubmed/37366801
http://dx.doi.org/10.3390/dermatopathology10020026
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author Kneitz, Hermann
Frings, Verena
Kircher, Stefan
Goebeler, Matthias
author_facet Kneitz, Hermann
Frings, Verena
Kircher, Stefan
Goebeler, Matthias
author_sort Kneitz, Hermann
collection PubMed
description Background: Granular cell tumors (GCT) are rare neoplasms of Schwann cell origin occurring in the skin and in other organs. The etiopathogenesis of GCT is yet poorly understood. Connexin 43 (Cx43) is the most broadly expressed gap junction protein in humans, the tumoral role of which has been investigated in several types of tumors. Its role in GCT of the skin, oral cavity and gastrointestinal tract is as yet unknown. Methods: Herein, we present a study on the immunohistochemical expression of Cx43 in GCT of the skin (n = 15), tongue (n = 4) and esophagus (n = 3). Immunolabeling was scored positive (weak (+), moderate (++) or strong (+++)). Results: Cx43 was expressed by all cases of GCT of the skin, tongue and esophagus (22/22), showing moderate to strong staining. All tissue sections of GCT were characterized by a diffuse, cytoplasmic staining pattern of the tumor cells. None of those showed membranous or nuclear staining. Conclusion: Our results suggest that Cx43 probably plays an important role in the development of this rare tumor entity.
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spelling pubmed-102968312023-06-28 Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus Kneitz, Hermann Frings, Verena Kircher, Stefan Goebeler, Matthias Dermatopathology (Basel) Article Background: Granular cell tumors (GCT) are rare neoplasms of Schwann cell origin occurring in the skin and in other organs. The etiopathogenesis of GCT is yet poorly understood. Connexin 43 (Cx43) is the most broadly expressed gap junction protein in humans, the tumoral role of which has been investigated in several types of tumors. Its role in GCT of the skin, oral cavity and gastrointestinal tract is as yet unknown. Methods: Herein, we present a study on the immunohistochemical expression of Cx43 in GCT of the skin (n = 15), tongue (n = 4) and esophagus (n = 3). Immunolabeling was scored positive (weak (+), moderate (++) or strong (+++)). Results: Cx43 was expressed by all cases of GCT of the skin, tongue and esophagus (22/22), showing moderate to strong staining. All tissue sections of GCT were characterized by a diffuse, cytoplasmic staining pattern of the tumor cells. None of those showed membranous or nuclear staining. Conclusion: Our results suggest that Cx43 probably plays an important role in the development of this rare tumor entity. MDPI 2023-06-16 /pmc/articles/PMC10296831/ /pubmed/37366801 http://dx.doi.org/10.3390/dermatopathology10020026 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kneitz, Hermann
Frings, Verena
Kircher, Stefan
Goebeler, Matthias
Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title_full Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title_fullStr Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title_full_unstemmed Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title_short Expression of Connexin 43 in Granular Cell Tumors of the Skin, Tongue and Esophagus
title_sort expression of connexin 43 in granular cell tumors of the skin, tongue and esophagus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10296831/
https://www.ncbi.nlm.nih.gov/pubmed/37366801
http://dx.doi.org/10.3390/dermatopathology10020026
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