Rutin enhances mitochondrial function and improves the developmental potential of vitrified ovine GV-stage oocyte

IF 2.4 2区 农林科学 Q3 REPRODUCTIVE BIOLOGY
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Abstract

Vitrification of oocyte has become an important component of assisted reproductive technology and has important implications for animal reproduction and the preservation of biodiversity. However, vitrification adversely affects mitochondrial function and oocyte developmental potential, mainly because of oxidative damage. Rutin is a highly effective antioxidant, but no information is available to the effect of rutin on the mitochondrial function and development in vitrified oocytes. Therefore, we studied the effects of rutin supplementation of vitrification solution on mitochondrial function and developmental competence of ovine germinal vesicle (GV) stage oocytes post vitrification. The results showed that supplementation of vitrification solution with 0.6 mM rutin significantly increased the cleavage rate (71.6 % vs. 59.3 %) and blastocyst rate (18.9 % vs. 6.8 %) compared to GV-stage oocytes in the vitrified group. Then, we analyzed the reactive oxygen species (ROS), glutathione (GSH), mitochondrial activity and membrane potential (ΔΨm), endoplasmic reticulum (ER) Ca2+, and annexin V (AV) of vitrified sheep GV-stage oocytes. Vitrified sheep oocytes exhibited increased levels of ROS and Ca2+, higher rate of AV-positive oocytes, and decreased mitochondrial activity, GSH and ΔΨm levels. However, rutin supplementation in vitrification solution decreased the levels of ROS, Ca2+ and AV-positive oocytes rate, and increased the GSH and ΔΨm levels in vitrified oocytes. Results revealed that rutin restored mitochondrial function, regulated Ca2+ homeostasis and decreased apoptosis potentially caused by mitophagy in oocytes. To understand the mechanism of rutin functions in vitrified GV-stage oocytes in sheep, we analyzed the transcriptome and found that rutin mediated oocytes development and mitochondrial function, mainly by affecting oxidative phosphorylation and the mitophagy pathways. In conclusion, supplementing with 0.6 mM rutin in vitrification solution significantly enhanced developmental potential through improving mitochondrial function and decreased apoptosis potentially caused by mitophagy after vitrification of ovine GV-stage oocytes.

芦丁能增强线粒体功能并提高玻璃化绵羊 GV 期卵母细胞的发育潜力
卵母细胞玻璃化已成为辅助生殖技术的重要组成部分,对动物繁殖和保护生物多样性具有重要意义。然而,玻璃化对线粒体功能和卵母细胞发育潜能有不利影响,主要原因是氧化损伤。芦丁是一种高效的抗氧化剂,但目前还没有关于芦丁对玻璃化卵母细胞线粒体功能和发育影响的信息。因此,我们研究了在玻璃化溶液中添加芦丁对玻璃化后绵羊生殖囊(GV)期卵母细胞线粒体功能和发育能力的影响。结果表明,与玻璃化组的 GV 期卵母细胞相比,在玻璃化液中添加 0.6 mM 芦丁可显著提高卵母细胞的裂殖率(71.6% 对 59.3%)和囊胚率(18.9% 对 6.8%)。然后,我们分析了玻璃化羊 GV 期卵母细胞的活性氧 (ROS)、谷胱甘肽 (GSH)、线粒体活性和膜电位 (ΔΨm)、内质网 (ER) Ca2+ 和附件素 V (AV)。玻璃化绵羊卵母细胞的 ROS 和 Ca2+ 水平升高,AV 阳性率升高,线粒体活性、GSH 和 ΔΨm 水平降低。然而,在玻璃化溶液中添加芦丁可降低玻璃化卵母细胞中的 ROS、Ca2+ 和 AV 阳性率水平,提高 GSH 和 ΔΨm 水平。结果表明,芦丁能恢复线粒体功能,调节钙离子平衡,并减少可能由有丝分裂引起的卵母细胞凋亡。为了解芦丁在绵羊玻璃化 GV 期卵母细胞中的作用机制,我们分析了转录组,发现芦丁主要通过影响氧化磷酸化和有丝分裂途径介导卵母细胞发育和线粒体功能。总之,在绵羊 GV 期卵母细胞玻璃化后,在玻璃化溶液中补充 0.6 mM 芦丁可通过改善线粒体功能和减少有丝分裂可能导致的细胞凋亡,从而显著提高卵母细胞的发育潜能。
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来源期刊
Theriogenology
Theriogenology 农林科学-生殖生物学
CiteScore
5.50
自引率
14.30%
发文量
387
审稿时长
72 days
期刊介绍: Theriogenology provides an international forum for researchers, clinicians, and industry professionals in animal reproductive biology. This acclaimed journal publishes articles on a wide range of topics in reproductive and developmental biology, of domestic mammal, avian, and aquatic species as well as wild species which are the object of veterinary care in research or conservation programs.
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