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Gag O, Dinu Ș, Manea H, Marcovici I, Pînzaru I, Popovici R, Crăiniceanu Z, Gyori Z, Iovănescu G, Chiriac S. UVA/UVB Irradiation Exerts a Distinct Phototoxic Effect on Human Keratinocytes Compared to Human Malignant Melanoma Cells. Life (Basel) 2023; 13:life13051144. [PMID: 37240789 DOI: 10.3390/life13051144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
Solar ultraviolet radiation (UVR) is responsible for the development of many skin diseases, including malignant melanoma (MM). This study assessed the phototoxic effects of UVA, and UVB radiations on healthy and pathologic skin cells by evaluating the behavior of human keratinocytes (HaCaT) and MM cells (A375) at 24 h post-irradiation. The main results showed that UVA 10 J/cm2 exerted no cytotoxicity on HaCaT and A375 cells, while UVB 0.5 J/cm2 significantly reduced cell viability and confluence, induced cell shrinkage and rounding, generated nuclear and F-actin condensation, and induced apoptosis by modulating the expressions of Bax and Bcl-2. The association of UVA 10 J/cm2 with UVB 0.5 J/cm2 (UVA/UVB) induced the highest cytotoxicity in both cell lines (viability < 40%). However, the morphological changes were different-HaCaT cells showed signs of necrosis, while in A375 nuclear polarization and expulsion from the cells were observed, features that indicate enucleation. By unraveling the impact of different UVR treatments on the behavior of normal and cancer skin cells and describing enucleation as a novel process involved in the cytotoxicity of UVA/UVB irradiation, these findings bridge the gap between the current and the future status of research in the field.
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Affiliation(s)
- Otilia Gag
- Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Ștefania Dinu
- Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Horațiu Manea
- Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Iasmina Marcovici
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Iulia Pînzaru
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Ramona Popovici
- Faculty of Dental Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Zorin Crăiniceanu
- Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Zsolt Gyori
- Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Gheorghe Iovănescu
- Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
| | - Sorin Chiriac
- Faculty of Medicine, "Victor Babes" University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No.2, 300041 Timisoara, Romania
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