Agerarin, Identified from Ageratum Houstonianum, Stimulates Circadian CLOCK-mediated Aquaporin-3 Gene Expression in HaCaT Keratinocytes
Authors
Affiliations
The juice of Ageratum houstonianum is used in folk medicine as an external wound healing aid for skin injuries. However, the active component of A. houstonianum and its mode of action in skin wound healing has not been investigated. This study was conducted to investigate the effect of A. houstonianum ethanolnolic extract (AHE) on the expression of aquaporin-3 (AQP3), an integral membrane protein for water and glycerol transport in keratinocytes, and to identify the structure of the A. houstonianum bioactive compound. Here, we show that AHE increased AQP3 gene expression at the transcriptional level through the p38 MAPK pathway in HaCaT cells. Furthermore, AHE ameliorated suppression of AQP3 expression caused by ultraviolet B (UVB) irradiation. Agerarin (6,7-dimethoxy-2,2-dimethyl-2H-chromene) was identified as the bioactive compound responsible for the up-regulation of AQP3 expression by enhancing the expression of the transcription factor circadian locomotor output cycles kaput (CLOCK). In conclusion, agerarin is a bioactive compound in AHE responsible for CLOCK-mediated AQP3 expression in keratinocytes.
Lee J, Jung E, Yeo H, Ahn S, Lim Y, Han Lee Y Molecules. 2022; 27(13).
PMID: 35807451 PMC: 9268509. DOI: 10.3390/molecules27134205.
Ahn S, Han Lee Y, Yeo H, Lee Y, Min D, Lim Y J Food Drug Anal. 2022; 28(3):449-460.
PMID: 35696096 PMC: 9261804. DOI: 10.38212/2224-6614.1178.
Cosmeceutical Therapy: Engaging the Repercussions of UVR Photoaging on the Skin's Circadian Rhythm.
Mahendra C, Ser H, Pusparajah P, Htar T, Chuah L, Yap W Int J Mol Sci. 2022; 23(5).
PMID: 35270025 PMC: 8911461. DOI: 10.3390/ijms23052884.
Yepes-Molina L, Carvajal M Pharm Biol. 2021; 59(1):1490-1504.
PMID: 34714214 PMC: 8567929. DOI: 10.1080/13880209.2021.1992450.
Wound-Healing and Skin-Moisturizing Effects of Extract.
Ikarashi N, Kaneko M, Fujisawa I, Fukuda N, Yoshida R, Kon R Healthcare (Basel). 2021; 9(6).
PMID: 34205315 PMC: 8235400. DOI: 10.3390/healthcare9060761.