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UV-Irradiation- and Inflammation-Induced Skin Barrier Dysfunction Is Associated with the Expression of Olfactory Receptor Genes in Human Keratinocytes

Department of Food and Nutrition, BK21 FOUR, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
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Academic Editor: Philip W. Wertz
Int. J. Mol. Sci. 2021, 22(6), 2799; https://doi.org/10.3390/ijms22062799
Received: 29 January 2021 / Revised: 26 February 2021 / Accepted: 8 March 2021 / Published: 10 March 2021
(This article belongs to the Special Issue Skin Epidermis and Barrier Function 2.0)
Olfactory receptors (ORs) have diverse physiological roles in various cell types, beyond their function as odorant sensors in the olfactory epithelium. These previous findings have suggested that ORs could be diagnostic markers and promising therapeutic targets in several pathological conditions. In the current study, we sought to characterize the changes in the expression of ORs in the HaCaT human keratinocytes cell line exposed to ultraviolet (UV) light or inflammation, well-recognized stimulus for skin barrier disruption. We confirmed that major olfactory signaling components, including ORs, GNAL, Ric8b, and adenylate cyclase type 3, are highly expressed in HaCaT cells. We have also demonstrated that the 12 ectopic ORs detectable in HaCaT cells are more highly expressed in UV-irradiated or inflamed conditions than in normal conditions. We further assessed the specific OR-mediated biological responses of HaCaT cells in the presence of known odorant ligands of ORs and observed that specific ligand-activated ORs downregulate skin barrier genes in HaCaT cells. This study shows the potential of OR as a marker for skin barrier abnormalities. Further research is needed to explore how OR is implicated in the development and progression of barrier dysfunction. View Full-Text
Keywords: olfactory receptor; skin barrier; keratinocytes; barrier dysfunction olfactory receptor; skin barrier; keratinocytes; barrier dysfunction
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MDPI and ACS Style

Kang, W.; Son, B.; Park, S.; Choi, D.; Park, T. UV-Irradiation- and Inflammation-Induced Skin Barrier Dysfunction Is Associated with the Expression of Olfactory Receptor Genes in Human Keratinocytes. Int. J. Mol. Sci. 2021, 22, 2799. https://doi.org/10.3390/ijms22062799

AMA Style

Kang W, Son B, Park S, Choi D, Park T. UV-Irradiation- and Inflammation-Induced Skin Barrier Dysfunction Is Associated with the Expression of Olfactory Receptor Genes in Human Keratinocytes. International Journal of Molecular Sciences. 2021; 22(6):2799. https://doi.org/10.3390/ijms22062799

Chicago/Turabian Style

Kang, Wesuk, Bomin Son, Soyoon Park, Dabin Choi, and Taesun Park. 2021. "UV-Irradiation- and Inflammation-Induced Skin Barrier Dysfunction Is Associated with the Expression of Olfactory Receptor Genes in Human Keratinocytes" International Journal of Molecular Sciences 22, no. 6: 2799. https://doi.org/10.3390/ijms22062799

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