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Article

The Expression of Connexin 37, 40, 43, 45 and Pannexin 1 in the Early Human Retina and Choroid Development and Tumorigenesis

1
Department of Ophthalmology, General Hospital Zadar, 21000 Split, Croatia
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Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
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Department of Health Studies, University of Zadar, 23000 Zadar, Croatia
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Department of Pathology, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
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Department of Pathology, University Hospital of Split, 21000 Split, Croatia
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Department of Histology and Embryology, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
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Faculty of Health Studies, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
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Department of Anatomy, School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
*
Author to whom correspondence should be addressed.
Academic Editors: Jose L. Mauriz and Mathieu Vinken
Int. J. Mol. Sci. 2022, 23(11), 5918; https://doi.org/10.3390/ijms23115918
Received: 31 March 2022 / Revised: 8 May 2022 / Accepted: 23 May 2022 / Published: 25 May 2022
(This article belongs to the Special Issue Connexin and Pannexin Signaling in Health and Disease 2.0)
The expression pattern of Connexins (Cx) 37, 40, 43, 45 and Pannexin 1 (Pnx1) was analyzed immunohistochemically, as well as semi-quantitatively and quantitatively in histological sections of developing 8th- to 12th-week human eyes and postnatal healthy eye, in retinoblastoma and different uveal melanomas. Expressions of both Cx37 and Cx43 increased during development but diminished in the postnatal period, being higher in the retina than in the choroid. Cx37 was highly expressed in the choroid of retinoblastoma, and Cx43 in epitheloid melanoma, while they were both increasingly expressed in mixoid melanoma. In contrast, mild retinal Cx40 expression during development increased to strong in postnatal period, while it was significantly higher in the choroid of mixoid melanoma. Cx45 showed significantly higher expression in the developing retina compared to other samples, while it became low postnatally and in all types of melanoma. Pnx1 was increasingly expressed in developing choroid but became lower in the postnatal eye. It was strongly expressed in epithelial and spindle melanoma, and particularly in retinoblastoma. Our results indicate importance of Cx37 and Cx40 expression in normal and pathological vascularization, and Cx43 expression in inflammatory response. Whereas Cx45 is involved in early stages of eye development, Pnx1might influence cell metabolism. Additionally, Cx43 might be a potential biomarker of tumor prognosis. View Full-Text
Keywords: eye development; retinoblastoma; choroid melanoma; connexin 37; connexin 40; connexin 43; connexin 45 and pannexin 1 eye development; retinoblastoma; choroid melanoma; connexin 37; connexin 40; connexin 43; connexin 45 and pannexin 1
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MDPI and ACS Style

Žužul, M.; Lozić, M.; Filipović, N.; Čanović, S.; Didović Pavičić, A.; Petričević, J.; Kunac, N.; Šoljić, V.; Saraga-Babić, M.; Konjevoda, S.; Vukojevic, K. The Expression of Connexin 37, 40, 43, 45 and Pannexin 1 in the Early Human Retina and Choroid Development and Tumorigenesis. Int. J. Mol. Sci. 2022, 23, 5918. https://doi.org/10.3390/ijms23115918

AMA Style

Žužul M, Lozić M, Filipović N, Čanović S, Didović Pavičić A, Petričević J, Kunac N, Šoljić V, Saraga-Babić M, Konjevoda S, Vukojevic K. The Expression of Connexin 37, 40, 43, 45 and Pannexin 1 in the Early Human Retina and Choroid Development and Tumorigenesis. International Journal of Molecular Sciences. 2022; 23(11):5918. https://doi.org/10.3390/ijms23115918

Chicago/Turabian Style

Žužul, Matea, Mirela Lozić, Natalija Filipović, Samir Čanović, Ana Didović Pavičić, Joško Petričević, Nenad Kunac, Violeta Šoljić, Mirna Saraga-Babić, Suzana Konjevoda, and Katarina Vukojevic. 2022. "The Expression of Connexin 37, 40, 43, 45 and Pannexin 1 in the Early Human Retina and Choroid Development and Tumorigenesis" International Journal of Molecular Sciences 23, no. 11: 5918. https://doi.org/10.3390/ijms23115918

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