Anti-inflammatory and photoaging-protective effects of Olea europaea through inhibition of AP-1 and NF-κB pathways

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Title
Anti-inflammatory and photoaging-protective effects of Olea europaea through inhibition of AP-1 and NF-κB pathways
Author(s)
C Song; D Jeong; Y H Hong; W Y Li; Sang Woo Lee; M A Hossain; A Taamalli; J H Kim; J H Kim; J Y Cho
Bibliographic Citation
American Journal of Chinese Medicine, vol. 48, no. 8, pp. 1895-1913
Publication Year
2020
Abstract
Olea europaea is a beneficial edible plant with a number of biological activities like anti-inflammatory, anti-oxidant, antithrombic, antihyperglycemic, and anti-ischemic activities. The mechanisms behind the antiphotoaging and anti-inflammatory effects of Olea europaea are not fully understood. To investigate how an ethanol extract of Olea europaea (Oe-EE) exerts these effects, we explored its activities in human keratinocytes and dermal fibroblasts. We assessed the anti-oxidant effects of Oe-EE via 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assays and measured the expression levels of matrix metalloproteinases (MMPs), cyclooxygenase-2, interleukin (IL)-6, tumor necrosis factor (TNF)-α, and moisturizing factors. Antiphotoaging and anti-inflammatory mechanisms of Oe-EE were explored by assessing signaling molecule activation via immunoblotting. Oe-EE treatment decreased the mRNA expression level of MMPs, cyclooxygenase-2, IL-6, and TNF-α and restored type I collagen, filaggrin, and sirtuin 1 expression in UVB-irradiated cells. Furthermore, Oe-EE inhibited the activities of several activator protein 1 regulatory enzymes, including extracellular signal-regulated kinase (ERK), p38, and c-Jun N-terminal kinase (JNK), and inhibited nuclear factor (NF)-κB pathway signaling proteins. Therefore, our results indicate that Oe-EE has photoaging-protective and anti-inflammatory effects.
Keyword
Olea europaeaAntiphotoaging EffectAnti-Inflammatory EffectAP-1NF-κB
ISSN
0192-415X
Publisher
World Scientific Publ Co Pte Ltd
DOI
http://dx.doi.org/10.1142/S0192415X20500950
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of Bioinfrastructure > International Biological Material Research Center > 1. Journal Articles
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