Cited by 30Skin Protection and AgingPhytochemicals and Antioxidant Activitiesmelanin and skin pigmentation

Protective Effect of Tropical Highland Blackberry Juice (Rubus adenotrichos Schltdl.) Against UVB‐Mediated Damage in Human Epidermal Keratinocytes and in a Reconstituted Skin Equivalent Model

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Calvo‐Castro, Laura, Syed, Deeba N., Chamcheu, Jean C., Vilela, Fernanda M. P., Pérez, Ana M., Vaillant, Fabrice, Rojas, Miguel, Mukhtar, Hasan·2013·Photochemistry and Photobiology

Abstract

Solar ultraviolet (UV) radiation, particularly its UVB (280–320 nm) spectrum, is the primary environmental stimulus leading to skin carcinogenesis. Several botanical species with antioxidant properties have shown photochemopreventive effects against UVB damage. Costa Rica's tropical highland blackberry (R ubus adenotrichos) contains important levels of phenolic compounds, mainly ellagitannins and anthocyanins, with strong antioxidant properties. In this study, we examined the photochemopreventive effect of R. adenotrichos blackberry juice (BBJ) on UVB‐mediated responses in human epidermal keratinocytes and in a three‐dimensional (3D) reconstituted normal human skin equivalent (SE). Pretreatment (2 h) and posttreatment (24 h) of normal human epidermal keratinocytes (NHEK s) with BBJ reduced UVB (25 mJ cm−2)‐mediated (1) cyclobutane pyrimidine dimers (CPDs) and (2) 8‐oxo‐7,8‐dihydro‐2′‐deoxyguanosine (8‐oxodG) formation. Furthermore, treatment of NHEK s with BBJ increased UVB‐mediated (1) poly(ADP‐ribose) polymerase cleavage and (2) activation of caspases 3, 8 and 9. Thus, BBJ seems to alleviate UVB‐induced effects by reducing DNA damage and increasing apoptosis of damaged cells. To establish the in vivo significance of these findings to human skin, immunohistochemistry studies were performed in a 3D SE model, where BBJ was also found to decrease CPD s formation. These data suggest that BBJ may be developed as an agent to ameliorate UV‐induced skin damage.

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Authors
Calvo‐Castro, L., Syed, D. N., Chamcheu, J. C., Vilela, F. M. P., Pérez, A. M., Vaillant, F., Rojas, M., & Mukhtar, H.
Affiliations
  • Instituto Tecnológico de Costa Rica (CR)
  • University of Wisconsin–Madison (US)
  • Universidade de São Paulo (BR)
  • Universidad de Costa Rica (CR)
Corresponding author
Mukhtar, Hasan
Venue
Photochemistry and Photobiology
Publisher
Wiley
Published
2013-07-08
Volume
89
Issue
5
Pages
1199-1207
ISSN
  • 0031-8655 (ISSN-L)
  • 1751-1097
OpenAlex
W1988425414
Cited by
30
References
41
Citations by year
2025: 2 · 2024: 2 · 2023: 2 · 2022: 2 · 2020: 4 · 2019: 7 · 2018: 1 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 2 · 2013: 1
FWCI
3.12
Type
journal article
Language
en
Open access
Locations
  • Photochemistry and Photobiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Agritrop (Cirad) (submittedVersion)
Funders
National Cancer Institute (P30CA014520)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
Keywords
Rubus adenotrichos, blackberry juice, UV-B radiation, skin carcinogenesis, human epidermal keratinocytes, cyclobutane pyrimidine dimers, 8-hydroxy-2'-deoxyguanosine, DNA damage, apoptosis, poly(ADP-ribose) polymerase, caspases, ellagitannins, anthocyanins, antioxidant phytochemicals
MeSH terms
Cells, Cultured, DNA Damage, Fruit, Humans, Plant Extracts, Radiation-Protective Agents, Skin, Tropical Climate, Ultraviolet Rays, Keratinocytes, Apoptosis, Oxidative Stress

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