Journal
AGING-US
Volume 11, Issue 19, Pages 8362-8373Publisher
IMPACT JOURNALS LLC
DOI: 10.18632/aging.102324
Keywords
mogroside V; oocyte in vitro ageing; ROS; SIRT1; embryo development
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Funding
- Scientific Research Foundation of Guangxi University [XTZ170099]
- Guangxi Natural Science Foundation Program [2018GXNSFAA138125]
- One-Hundred Talent Program of Guangxi
- Innovation Project of Guangxi Graduate Education
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Postovulatory ageing compromises oocyte quality and subsequent development in various manners. We aimed to assay the protective effects of mogroside V on porcine oocyte quality during in vitro ageing and explore the related causes. We observed that mogroside V can effectively maintain normal oocyte morphology and early embryo development competence after prolonged culture for 24 h. Moreover, mogroside V can markedly reduce reactive oxygen species (ROS) levels, alleviate spindle formation and chromosome alignment abnormalities, improve mitochondrial contents, adenosine triphosphate (ATP) levels and the membrane potential (Delta Psi m), and reduce early apoptosis in aged oocytes. We examined the molecular changes and found that SIRT1 expression was decreased in in vitro aged oocytes but was maintained by exposure to mogroside V. However, when SIRT1 was successfully inhibited by the specific inhibitor EX-527, mogroside V could not reduce ROS levels or alleviate abnormal spindle organization and chromosome misalignment. In summary, our results demonstrated that mogroside V can alleviate the deterioration of oocyte quality during in vitro ageing, possibly by reducing oxidative stress through SIRT1 upregulation.
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