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http://dx.doi.org/10.14348/molcells.2018.0352

Alleviation of Senescence via ATM Inhibition in Accelerated Aging Models  

Kuk, Myeong Uk (Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University)
Kim, Jae Won (Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University)
Lee, Young-Sam (Well Aging Research Center)
Cho, Kyung A (Department of Biochemistry, Chonnam National University Medical School)
Park, Joon Tae (Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University)
Park, Sang Chul (Well Aging Research Center)
Publication Information
Molecules and Cells / v.42, no.3, 2019 , pp. 210-217 More about this Journal
Abstract
The maintenance of mitochondrial function is closely linked to the control of senescence. In our previous study, we uncovered a novel mechanism in which senescence amelioration in normal aging cells is mediated by the recovered mitochondrial function upon Ataxia telangiectasia mutated (ATM) inhibition. However, it remains elusive whether this mechanism is also applicable to senescence amelioration in accelerated aging cells. In this study, we examined the role of ATM inhibition on mitochondrial function in Hutchinson-Gilford progeria syndrome (HGPS) and Werner syndrome (WS) cells. We found that ATM inhibition induced mitochondrial functional recovery accompanied by metabolic reprogramming, which has been known to be a prerequisite for senescence alleviation in normal aging cells. Indeed, the induced mitochondrial metabolic reprogramming was coupled with senescence amelioration in accelerated aging cells. Furthermore, the therapeutic effect via ATM inhibition was observed in HGPS as evidenced by reduced progerin accumulation with concomitant decrease of abnormal nuclear morphology. Taken together, our data indicate that the mitochondrial functional recovery by ATM inhibition might represent a promising strategy to ameliorate the accelerated aging phenotypes and to treat age-related disease.
Keywords
ATM inhibition; HGPS; KU-60019; mitochondrial function; WS;
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