Slight Deuterium Enrichment in Water Acts as an Antioxidant: Is Deuterium a Cell Growth Regulator?

被引:17
作者
Zhang, Xuepei [1 ]
Wang, Jin [1 ,2 ]
Zubarev, Roman A. [1 ,3 ,4 ]
机构
[1] Karolinska Inst, Dept Med Biochem & Biophys, Div Physiol Chem 1, Stockholm, Sweden
[2] Xi An Jiao Tong Univ, Sch Basic Med Sci, Dept Pharmacol, Hlth Sci Ctr, Xian, Shannxi, Peoples R China
[3] SciLIfeLab, Stockholm, Sweden
[4] IM Sechenov First Moscow State Med Univ, Dept Pharmacol & Technol Chem, Moscow, Russia
关键词
OXIDATIVE STRESS; HEAVY-WATER; PEROXIREDOXIN FAMILY; S-NITROSATION; THIOREDOXIN; CALCIUM; APOPTOSIS; PROLIFERATION; INFLAMMATION; INHIBITION;
D O I
10.1074/mcp.RA120.002231
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Small admixtures in water, e.g. of metal ions, often act as cell growth regulators. Here we report that enrichment of deuterium content in water, normally found at 8 mM concentration, two-three folds increases cell proliferation and lowers the oxidative stress level as well. Acting as an antioxidant, deuterium-enriched water prevents the toxic effect of such oxidative agents as hydrogen peroxide and auranofin. This action is opposite to that of deuterium depletion that is known to suppress cell growth and induce oxidative stress in mitochondria. We thus hypothesize that deuterium may be a natural cell growth regulator that controls mitochondrial oxidation-reduction balance. Because growth acceleration is reduced approximately by half by addition to water a minute amount (0.15%) of O-18 isotope, at least part of the deuterium effect on cell growth can be explained by the isotopic resonance phenomenon. A slight (approximate to 2-fold) enrichment of deuterium in water accelerates human cell growth. Quantitative MS based proteomics determined changes in protein abundances and redox states and found that deuterium-enriched water acts mainly through decreasing ROS production in mitochondria. This action is opposite to that of deuterium depletion that suppresses cell growth by inducing oxidative stress. Thus deuterium may be a natural cell growth regulator that controls mitochondrial oxidation-reduction balance. The role of isotopic resonance in this effect was validated by further experiments on bacteria.
引用
收藏
页码:1790 / 1804
页数:15
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