哈卡特
光老化
细胞凋亡
化学
角质形成细胞
癌症研究
药理学
皮肤病科
医学
生物化学
体外
作者
Liming Tian,Dan Ke,Hong Yi,Chong Zhang,Dai‐Zhi Tian,Long Chen,Li‐Rui Zhan,Shi‐Qin Zong
出处
期刊:Aging
[Impact Journals, LLC]
日期:2021-12-09
卷期号:13 (23): 25325-25341
被引量:4
标识
DOI:10.18632/aging.203749
摘要
Artesunate, a semi-synthetic derivative of artemisinin, exerts various pharmacological activities. Nevertheless, the effects of Art on skin photoaging remain unclear. Herein, we investigated whether Art ameliorated ultraviolet-irradiated skin photoaging in HaCaT cells and mice.To construct skin photoaging cellular models, HaCaT cells were irradiated by UV (UVB, 20mJ/cm2) for 5 days. HaCaT cells were pretreated with three concentrations of Art (1, 5 and 20 μg/ml) for 2 h each day. After 5 days, cell senescence, ROS production, SOD levels, p16INK4a and β-catenin expression, proliferation and apoptosis were detected in HaCaT cells. Effects of Art on normal cells were investigated. After sh-β-catenin transfection or XAV-939 treatment, HaCaT cells were pretreated with 20 μg/ml Art and irradiated by UVB. After 5 days, skin photoaging was then observed. Furthermore, skin photoaging mouse models were established and the effects of Art and β-catenin silencing on skin photoaging were investigated.Art treatment suppressed cell senescence, intracellular ROS production, p16INK4a expression and apoptosis and promoted proliferation and SOD and β-catenin expression in UVB irradiated HaCaT cells. But Art had no toxic effects on normal cells. Silencing β-catenin by sh-β-catenin or XAV-939 exacerbated UVB irradiation-mediated cell senescence, apoptosis, and ROS production in HaCaT cells, which was ameliorated by Art treatment. The therapeutic effects of Art on skin photoaging were also confirmed in mouse models.These findings suggested that Art treatment alleviated UVB irradiation-driven skin photoaging through enhancing β-catenin expression, which offered novel clues for pharmacological activity of Art.
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