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McGlone CL, Christian L, Schmeusser B, Liu L, Chalfant CE, Stephensen DJ, Sherwin CM, Rapp CM, Sattouf Z, Rohan CA, Morris C, Chen Y, Travers JB. Evidence for Systemic Reactive Oxygen Species in UVB-mediated Microvesicle Formation. Photochem Photobiol 2022; 98:242-247. [PMID: 34324712 PMCID: PMC8799769 DOI: 10.1111/php.13494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 01/03/2023]
Abstract
Recent studies have implicated subcellular microvesicle particles (MVP) in the ability of ultraviolet B radiation to exert both local and systemic effects. Indeed, UVB generates MVP (UVB-MVP) in human skin and systemically following phototherapy. The current studies were designed to test the hypothesis that the ability of UVB to generate MVP was dependent upon reactive oxygen species (ROS). To that end, we tested urine samples from subjects undergoing UVB phototherapy for the presence of isoprostanes as well as the oxidized guanosine derivative 8OHdG. We also conducted a clinical study in which volar forearms of subjects were treated with localized UVB and erythema/MVP measured. The same cohort was then treated with 7 days of vitamin C (2 g day-1 ) and vitamin E (1000 IU day-1 ), and UVB-induced MVPs tested on the contralateral forearm. Urine specimens from subjects undergoing phototherapy were found to have increased levels of isoprostanes and 8OHdG, with maximal levels noted 8-16 h post-treatment. Treatment with antioxidant vitamins resulted in diminished UVB-generated skin MVP to baseline levels. These studies suggest that whole-body UVB generates a systemic pro-oxidative response, and that antioxidants can attenuate localized skin UVB-MVPs.
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Affiliation(s)
- Cameron L. McGlone
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Lea Christian
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Benjamin Schmeusser
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Langni Liu
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Charles E. Chalfant
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL 33620, USA,Research Service, James A. Haley Veterans Hospital, Tampa, FL 33612, USA
| | - Daniel J. Stephensen
- Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL 33620, USA
| | - Catherine M. Sherwin
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435,Department of Pediatrics, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Christine M. Rapp
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Zafer Sattouf
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Craig A. Rohan
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435,Department of Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Connor Morris
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Yanfang Chen
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435
| | - Jeffrey B. Travers
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435,Department of Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH 45435,The Dayton V.A. Medical Center, Dayton, OH 45428.,Corresponding author: (Jeffrey B. Travers)
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Liu L, Awoyemi AA, Fahy KE, Thapa P, Borchers C, Wu BY, McGlone CL, Schmeusser B, Sattouf Z, Rohan CA, Williams AR, Cates EE, Knisely C, Kelly LE, Bihl JC, Cool DR, Sahu RP, Wang J, Chen Y, Rapp CM, Kemp MG, Johnson RM, Travers JB. Keratinocyte-derived microvesicle particles mediate ultraviolet B radiation-induced systemic immunosuppression. J Clin Invest 2021; 131:144963. [PMID: 33830943 DOI: 10.1172/jci144963] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [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: 10/07/2020] [Accepted: 04/07/2021] [Indexed: 12/11/2022] Open
Abstract
A complete carcinogen, ultraviolet B (UVB) radiation (290-320 nm), is the major cause of skin cancer. UVB-induced systemic immunosuppression that contributes to photocarcinogenesis is due to the glycerophosphocholine-derived lipid mediator platelet-activating factor (PAF). A major question in photobiology is how UVB radiation, which only absorbs appreciably in the epidermal layers of skin, can generate systemic effects. UVB exposure and PAF receptor (PAFR) activation in keratinocytes induce the release of large numbers of microvesicle particles (MVPs; extracellular vesicles ranging from 100 to 1000 nm in size). MVPs released from skin keratinocytes in vitro in response to UVB (UVB-MVPs) are dependent on the keratinocyte PAFR. Here, we used both pharmacologic and genetic approaches in cells and mice to show that both the PAFR and enzyme acid sphingomyelinase (aSMase) were necessary for UVB-MVP generation. Our discovery that the calcium-sensing receptor is a keratinocyte-selective MVP marker allowed us to determine that UVB-MVPs leaving the keratinocyte can be found systemically in mice and humans following UVB exposure. Moreover, we found that UVB-MVPs contained bioactive contents including PAFR agonists that allowed them to serve as effectors for UVB downstream effects, in particular UVB-mediated systemic immunosuppression.
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Affiliation(s)
- Langni Liu
- Department of Pharmacology and Toxicology
| | | | | | | | | | | | | | | | | | - Craig A Rohan
- Department of Pharmacology and Toxicology.,Department of Dermatology, and
| | | | | | | | | | - Ji C Bihl
- Department of Pharmacology and Toxicology
| | | | | | - Jinju Wang
- Department of Pharmacology and Toxicology
| | | | | | | | - R Michael Johnson
- Department of Plastic Surgery, Wright State University, Dayton, Ohio, USA
| | - Jeffrey B Travers
- Department of Pharmacology and Toxicology.,Department of Dermatology, and.,Dayton VA Medical Center, Dayton, Ohio, USA
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