alpha-ketoglutarate delays age-related fertility decline in mammals

文献类型： 外文期刊

第一作者： Zhang, Zhenzhen

作者： Zhang, Zhenzhen;He, Changjiu;Gao, Yu;Zhang, Lu;Song, Yukun;Zhu, Tianqi;Zhu, Kuanfeng;Lv, Dongying;Wang, Jing;Tian, Xiuzhi;Ma, Teng;Ji, Pengyun;Cui, Wei;Liu, Guoshi;He, Changjiu;Gao, Yu;Song, Yukun;Tian, Xiuzhi;Ma, Teng;Cui, Wei

作者机构：

关键词： mTOR; ovarian aging; reproduction; telomere; alpha-KG

期刊名称：AGING CELL （ 影响因子：9.304； 五年影响因子：9.951 ）

ISSN： 1474-9718

年卷期： 2021 年 20 卷 2 期

页码：

收录情况： SCI

摘要： The fecundity reduction with aging is referred as the reproductive aging which comes earlier than that of chronological aging. Since humans have postponed their childbearing age, to prolong the reproductive age becomes urgent agenda for reproductive biologists. In the current study, we examined the potential associations of alpha-ketoglutarate (alpha-KG) and reproductive aging in mammals including mice, swine, and humans. There is a clear tendency of reduced alpha-KG level with aging in the follicle fluids of human. To explore the mechanisms, mice were selected as the convenient animal model. It is observed that a long term of alpha-KG administration preserves the ovarian function, the quality and quantity of oocytes as well as the telomere maintaining system in mice. alpha-KG suppresses ATP synthase and alterations of the energy metabolism trigger the nutritional sensors to down-regulate mTOR pathway. These events not only benefit the general aging process but also maintain ovarian function and delay the reproductive decline. Considering the safety of the alpha-KG as a naturally occurring molecule in energy metabolism, its utility in reproduction of large mammals including humans deserves further investigation.

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