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Hennessey RC, Holderbaum AM, Bonilla A, Delaney C, Gillahan JE, Tober KL, Oberyszyn TM, Zippin JH, Burd CE. Ultraviolet radiation accelerates NRas-mutant melanomagenesis: A cooperative effect blocked by sunscreen. Pigment Cell Melanoma Res 2017; 30:477-487. [PMID: 28544727 DOI: 10.1111/pcmr.12601] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/17/2017] [Indexed: 11/28/2022]
Abstract
To mitigate melanoma risk, sunscreen use is widely advocated; yet, the ability of sunscreens to prevent melanoma remains controversial. Here, we test the tenet that sunscreens limit melanoma risk by blocking ultraviolet radiation (UV)-induced DNA damage using murine models that recapitulate the genetics and spontaneous evolution of human melanoma. We find that a single, non-erythematous dose of UV dramatically accelerates melanoma onset and increases tumor multiplicity in mice carrying an endogenous, melanocyte-specific NRas61R allele. By contrast, transient UV exposure does not alter tumor onset in mice lacking p16INK4a or harboring an NRas12D allele. To block the rapid onset of melanoma cooperatively caused by UV and NRas61R , we employed a variety of aerosol sunscreens. While all sunscreens delayed melanoma formation and blocked UV-induced DNA damage, differences in aerosol output (i.e., amount applied/cm2 ) caused variability in the cancer preventative efficacy of products with identical sunburn protection factor (SPF) ratings.
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Affiliation(s)
- Rebecca C Hennessey
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
| | - Andrea M Holderbaum
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA.,Department of Molecular Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
| | - Anamaria Bonilla
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA.,Department of Molecular Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
| | - Conor Delaney
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
| | - James E Gillahan
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
| | - Kathleen L Tober
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | | | - Jonathan H Zippin
- Department of Dermatology, Joan and Sanford I. Weill Medical College of Cornell University, New York, NY, USA
| | - Christin E Burd
- Department of Cancer Biology and Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA.,Department of Molecular Genetics, Biomedical Research Tower, The Ohio State University, Columbus, OH, USA
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