Publication: CYP11A1-derived vitamin D<inf>3</inf> products protect against UVB-induced inflammation and promote keratinocytes differentiation
1
Issued Date
2020-08-01
Resource Type
ISSN
18734596
08915849
08915849
Other identifier(s)
2-s2.0-85085659986
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Free Radical Biology and Medicine. Vol.155, (2020), 87-98
Suggested Citation
Anyamanee Chaiprasongsuk, Zorica Janjetovic, Tae Kang Kim, Robert C. Tuckey, Wei Li, Chander Raman, Uraiwan Panich, Andrzej T. Slominski CYP11A1-derived vitamin D<inf>3</inf> products protect against UVB-induced inflammation and promote keratinocytes differentiation. Free Radical Biology and Medicine. Vol.155, (2020), 87-98. doi:10.1016/j.freeradbiomed.2020.05.016 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/57695
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
CYP11A1-derived vitamin D<inf>3</inf> products protect against UVB-induced inflammation and promote keratinocytes differentiation
Abstract
© 2020 UVB radiation mediates inflammatory responses causing skin damage and defects in epidermal differentiation. 1α,25-Dihydroxyvitamin D3 (1,25(OH)2D3) interacts with the vitamin D3 receptor (VDR) to regulate inflammatory responses. Additionally, 1,25(OH)2D3/VDR signaling represents a potential therapeutic target in the treatment of skin disorders associated with inflammation and poor differentiation of keratinocytes. Since the protective effect of 1,25(OH)2D3 against UVB-induced skin damage and inflammation is recognized, CYP11A1-derived vitamin D3-hydroxyderivatives including 20(OH)D3, 1,20(OH)2D3, 20,23(OH)2D3 and 1,20,23(OH)3D3 were tested for their anti-inflammatory and skin protection properties in UVB-irradiated human epidermal keratinocytes (HEKn). HEKn were treated with secosteroids for 24 h pre- and post-UVB (50 mJ/cm2) irradiation. Secosteroids modulated the expression of the inflammatory response genes (IL-17, NF-κB p65, and IκB-α), reducing nuclear-NF-κB-p65 activity and increasing cytosolic-IκB-α expression as well as that of pro-inflammatory mediators, IL-17, TNF-α, and IFN-γ. They stimulated the expression of involucrin (IVL) and cytokeratin 10 (CK10), the major markers of epidermal differentiation, in UVB-irradiated cells. We conclude that CYP11A1-derived hydroxyderivatives inhibit UVB-induced epidermal inflammatory responses through activation of IκB-α expression and suppression of NF-kB-p65 activity and its downstream signaling cytokines, TNF-α, and IFN-γ, as well as by inhibiting IL-17 production and activating epidermal differentiation.