Rose myrtle (Rhodomyrtus tomentosa) extract and its component, piceatannol, enhance the activity of DNA polymerase and suppress the inflammatory response elicited by UVB‑induced DNA damage in skin cells

  • Authors:
    • Sawako Shiratake
    • Tatsuo Nakahara
    • Hiroyasu Iwahashi
    • Takefumi Onodera
    • Yoshiyuki Mizushina
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  • Published online on: July 30, 2015     https://doi.org/10.3892/mmr.2015.4156
  • Pages: 5857-5864
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Abstract

A number of naturally occurring agents are hypothesized to protect against ultraviolet (UV)‑induced skin damage. The present study screened >50 plant extracts for inhibitors of UVB‑induced cytotoxicity, using cultured normal human epidermal keratinocytes (NHEK), and identified that the fruit of rose myrtle (Rhodomyrtus tomentosa) was the most marked inhibitor of cell death. The protective effect of rose myrtle extract and the two key components, piceatannol and piceatannol‑4'‑O‑β‑D‑glucopyranoside, on UVB‑induced damage and inflammation in cultured NHEK was investigated. The 80% ethanol extract from rose myrtle fruit with piceatannol exhibited protection of UVB‑induced cytotoxicity in NHEK; however, piceatannol‑4'‑O‑β‑D‑glucopyranoside exhibited no protection, as determined by a 3‑(4,5‑dimethylthiazol‑2‑yl)‑2,5‑diphenyltetrazolium bromide assay. This extract and piceatannol reduced the production of UVB‑induced cyclobutane pyrimidine dimers and enhanced the cellular enzyme activity of the DNA polymerases in UVB‑irradiated NHEK, suggesting that UVB‑stimulated DNA damage was repaired by the polymerases. In addition, the secretion of prostaglandin E2, which is an inflammatory mediator, was decreased. These results indicated that rose myrtle fruit extract and its key constituent, piceatannol, are potential photoprotective candidates for UV‑induced skin damage.
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October-2015
Volume 12 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Shiratake S, Nakahara T, Iwahashi H, Onodera T and Mizushina Y: Rose myrtle (Rhodomyrtus tomentosa) extract and its component, piceatannol, enhance the activity of DNA polymerase and suppress the inflammatory response elicited by UVB‑induced DNA damage in skin cells. Mol Med Rep 12: 5857-5864, 2015
APA
Shiratake, S., Nakahara, T., Iwahashi, H., Onodera, T., & Mizushina, Y. (2015). Rose myrtle (Rhodomyrtus tomentosa) extract and its component, piceatannol, enhance the activity of DNA polymerase and suppress the inflammatory response elicited by UVB‑induced DNA damage in skin cells. Molecular Medicine Reports, 12, 5857-5864. https://doi.org/10.3892/mmr.2015.4156
MLA
Shiratake, S., Nakahara, T., Iwahashi, H., Onodera, T., Mizushina, Y."Rose myrtle (Rhodomyrtus tomentosa) extract and its component, piceatannol, enhance the activity of DNA polymerase and suppress the inflammatory response elicited by UVB‑induced DNA damage in skin cells". Molecular Medicine Reports 12.4 (2015): 5857-5864.
Chicago
Shiratake, S., Nakahara, T., Iwahashi, H., Onodera, T., Mizushina, Y."Rose myrtle (Rhodomyrtus tomentosa) extract and its component, piceatannol, enhance the activity of DNA polymerase and suppress the inflammatory response elicited by UVB‑induced DNA damage in skin cells". Molecular Medicine Reports 12, no. 4 (2015): 5857-5864. https://doi.org/10.3892/mmr.2015.4156