title: Inhibitory effect of panduratin A on UV-induced activation of mitogen-activated protein kinases (MAPKs) in dermal fibroblast cells.
abstract: Exposure of the skin to ultraviolet (UV) induces photoaging associated with up-regulated matrix metalloproteinases (MMPs) activities and decreased collagen synthesis. We previously reported that panduratin A, a chalcone compound isolated from KAEMPFERIA PANDURATA Roxb ., decreased MMP-1 expression in UV-irradiated human skin fibroblasts. Here, we have investigated the effect of panduratin A on UV-induced activation of mitogen-activated protein kinases (MAPKs) signaling modules such as extracellular-regulated protein kinase (ERK), Jun-N-terminal kinase (JNK) and p38 kinase. Treatment with panduratin A in the range of 0.001 - 0.1 microM significantly inhibited UV-induced ERK, JNK and p38 activation. Moreover, inhibition of ERK, JNK and p38 by panduratin A resulted in decreased c-Fos expression and c-Jun phosphorylation induced by UV, which led to inhibition of activator protein-1 (AP-1) DNA binding activity. Panduratin A showed stronger activity than epigallocatechin 3- O-gallate (EGCG) known as a natural anti-aging agent. The results suggest that panduratin A can down-regulate UV-induced MMP-1 expression by inhibiting the MAPKs pathways and AP-1 activation. AP-1:activator protein-1 EGCG:epigallocatechin 3- O-gallate ERK:extracellular-regulated protein kinase JNK:c-Jun N-terminal kinase MAPK:mitogen-activated protein kinase MMP:matrix metalloproteinase UV:ultraviolet.
authors.affiliation: Department of Biomaterials Science and Engineering, Yonsei University, Seoul, Korea.
authors.forename: Jae-Seok
authors.initials: JS
authors.lastname: Shim
authors.forename: Yi-Young
authors.initials: YY
authors.lastname: Kwon
authors.forename: Young-Sun
authors.initials: YS
authors.lastname: Han
authors.forename: Jae-Kwan
authors.initials: JK
authors.lastname: Hwang
mesh_terms: D002460:Cell Line; D047188:Chalcones / Q000737:chemistry / Q000494:pharmacology*; D004789:Enzyme Activation / Q000187:drug effects* / Q000528:radiation effects; D005347:Fibroblasts; D006801:Humans; D020935:MAP Kinase Signaling System / Q000187:drug effects* / Q000528:radiation effects; D020928:Mitogen-Activated Protein Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D010766:Phosphorylation / Q000187:drug effects / Q000528:radiation effects; D047428:Protein Kinase Inhibitors / Q000494:pharmacology*; D012867:Skin / Q000166:cytology / Q000187:drug effects / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D047188:Chalcones; D047428:Protein Kinase Inhibitors; C482884:panduratin A; D020928:Mitogen-Activated Protein Kinases