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The inhibitory effect in Fraxinellone on oxidative stress‐induced senescence correlates with AMP‐activated protein kinase‐dependent autophagy restoration
Author(s) -
Han Xiaojuan,
Chen Honghan,
Zhou Jiao,
Tai Haoran,
Gong Hui,
Wang Xiaobo,
Huang Ning,
Qin Jianqiong,
Fang Tingting,
Wang Fei,
Xiao Hengyi
Publication year - 2018
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.26169
Subject(s) - ampk , autophagy , senescence , neuroprotection , chemistry , microbiology and biotechnology , oxidative stress , mechanism (biology) , amp activated protein kinase , protein kinase a , mtorc1 , kinase , biochemistry , signal transduction , biology , pharmacology , pi3k/akt/mtor pathway , apoptosis , philosophy , epistemology
As a natural metabolite of limonoids from Dictamnus dasycarpus , fraxinellone has been reported to be neuroprotective and anti‐inflammatory. However, its influence on cellular metabolism remains largely unknown. In the present study, we investigated the effect of fraxinellone on cellular senescence‐induced by oxidative stress and the potential mechanism. We found that fraxinellone administration caused growth arrest and certainly repressed the activity of senescence associated β‐galactosidase as well as the expression of senescence‐associated‐genes. Interestingly, this effect of fraxinellone is closely correlated with the restoration of impaired autophagy and the activation of AMPK. Notably, fraxinellone reacts in an AMPK‐dependent but mTORC1‐independent manner. Together, our study demonstrates for the first time that fraxinellone has the effect on senescence inhibition and AMPK activation, and supports the notion that autophagic mechanism is important for aging prevention. These findings expanded the list of natural compounds and will be potentially utilized for aging decay and/or AMPK activation.