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Frommeyer TC, Rohan CA, Spandau DF, Kemp MG, Wanner MA, Tanzi E, Travers JB. Wounding Therapies for Prevention of Photocarcinogenesis. Front Oncol 2022; 11:813132. [PMID: 35071017 PMCID: PMC8776632 DOI: 10.3389/fonc.2021.813132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/14/2021] [Indexed: 01/01/2023] Open
Abstract
The occurrence of non-melanoma skin cancer (NMSC) is closely linked with advanced age and ultraviolet-B (UVB) exposure. More specifically, the development of NMSC is linked to diminished insulin-like growth factor-1 (IGF-1) signaling from senescent dermal fibroblasts in geriatric skin. Consequently, keratinocyte IGF-1 receptor (IGF-1R) remains inactive, resulting in failure to induce appropriate protective responses including DNA repair and cell cycle checkpoint signaling. This allows UVB-induced DNA damage to proliferate unchecked, which increases the likelihood of malignant transformation. NMSC is estimated to occur in 3.3 million individuals annually. The rising incidence results in increased morbidity and significant healthcare costs, which necessitate identification of effective treatment modalities. In this review, we highlight the pathogenesis of NMSC and discuss the potential of novel preventative therapies. In particular, wounding therapies such as dermabrasion, microneedling, chemical peeling, and fractionated laser resurfacing have been shown to restore IGF-1/IGF-1R signaling in geriatric skin and suppress the propagation of UVB-damaged keratinocytes. This wounding response effectively rejuvenates geriatric skin and decreases the incidence of age-associated NMSC.
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Affiliation(s)
- Timothy C. Frommeyer
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
| | - Craig A. Rohan
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Department of Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Dayton Veterans Administration Medical Center, Dayton, OH, United States
| | - Dan F. Spandau
- Departments of Dermatology and Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States
- Richard A. Roudebush Veterans Administration (VA) Medical Center, Indianapolis, IN, United States
| | - Michael G. Kemp
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Dayton Veterans Administration Medical Center, Dayton, OH, United States
| | - Molly A. Wanner
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, United States
| | | | - Jeffrey B. Travers
- Department of Pharmacology & Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Department of Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Dayton Veterans Administration Medical Center, Dayton, OH, United States
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Alkawar AMM, Castellanos AJ, Carpenter MA, Hutcherson RJ, Madkhali MAO, Johnson RM, Bottomley M, Kemp MG. Insulin-like Growth Factor-1 Impacts p53 Target Gene Induction in UVB-irradiated Keratinocytes and Human Skin. Photochem Photobiol 2020; 96:1332-1341. [PMID: 32416609 DOI: 10.1111/php.13279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 05/05/2020] [Indexed: 12/19/2022]
Abstract
The tumor suppressor protein p53 limits mutagenesis in response to ultraviolet-B (UVB) light exposure by activating the transcription of genes that mitigate the damaging effects of UVB radiation on DNA. Because most nonmelanoma skin cancers (NMSCs) occur in older individuals, it is important to understand the process of mutagenesis in the geriatric skin microenvironment. Based on previous studies demonstrating that geriatric skin expresses lower levels of the growth factor insulin-like growth factor-1 (IGF-1) than young adult skin, a role for IGF-1 in the regulation of p53 target genes was investigated in both human keratinocytes in vitro and human skin explants ex vivo. The products of the p53 target genes p21 and DNA polymerase eta (pol η) were found to be increased by UVB exposure in both experimental systems, and this induction was observed to be partially abrogated by depriving keratinocytes of IGF-1 in vitro or by the treatment of keratinocytes in vitro and human skin explants with an IGF-1 receptor antagonist. Because p21 and pol η function to limit mutagenic DNA replication following UVB exposure, these results suggest that NMSC risk in geriatric populations may be due to age-dependent decreases in IGF-1 signaling that disrupt p53 function in the skin.
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Affiliation(s)
- Abdulrahman M M Alkawar
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | - Amber J Castellanos
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | - Mae Alexandra Carpenter
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | - Rebekah J Hutcherson
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | - Mariyyah A O Madkhali
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | - Ron Michael Johnson
- Department of Surgery, Boonshoft School of Medicine, Wright State University, Dayton, OH
| | | | - Michael G Kemp
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH
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