Decursin is a pyranocoumarin isolated from the root of Anglica gigas Nakai and has been reported to have anti-inflammatory and anticancerous (1, 2). Recently, it has been reported that Decursin stimulates glucose uptake by activating AMP-activated protein kinase (AMPK) (3). However, the mechanism by which Decursin activates AMPK remains undefined. So, the mechanism is investigated through which decursin activates AMPK in skeletal muscle cells by comparing insulin and metformin signal (4, 5). Activation of AMPK requires the phosphorylation of Thr172 α-subunit by upstream AMPK kinase (AMPKK) (6). Presently, two upstream AMPKKs have been discovered: LKB1 and Ca2+/calmodulin-dependent protein kinase kinase (CaMKK). Phosphorylation of AMPK by LKB1 requires an increase in AMP or AMP mimetic agents (7). However, CaMKK activates AMPK by a rise in the intracellular Ca2+ concentration in an AMP independent manner (8, 9). The aim of this study is to investigate the mechanism leading to AMPK activation by Decursin in muscle cells. The results reveal that Decursin activates AMPK by Ca2+-independent manner. However, insulin and metformin activates AMPK by Ca2+-dependent manner.
키워드
Decursindiabete mellitusmetforminAMPKCaMKK
저자
So-Young KI [ Dept. of Biotechnology, Korea University, Seoul, 136-701. ]
Ji-Eun KANG [ Dept. of Biotechnology, Korea University, Seoul, 136-701. ]
Ik-Hwan KIM [ Dept. of Biotechnology, Korea University, Seoul, 136-701. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
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