Calcium ion regulation by BAPTA-AM and ruthenium red improved the fertilisation capacity and developmental ability of vitrified bovine oocytes

文献类型： 外文期刊

第一作者： Wang, Na

作者： Wang, Na;Hao, Hai-Sheng;Li, Chong-Yang;Zhao, Ya-Han;Wang, Hao-Yu;Du, Wei-Hua;Wang, Dong;Liu, Yan;Pang, Yun-Wei;Zhu, Hua-Bin;Zhao, Xue-Ming;Yan, Chang-Liang

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期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： Vitrification reduces the fertilisation capacity and developmental ability of mammalian oocytes; this effect is closely associated with an abnormal increase of cytoplasmic free calcium ions ([Ca2+](i)). However, little information about the mechanism by which vitrification increases [Ca2+](i) levels or a procedure to regulate [Ca2+](i) levels in these oocytes is available. Vitrified bovine oocytes were used to analyse the effect of vitrification on [Ca2+](i), endoplasmic reticulum Ca2+ (ER Ca2+), and mitochondrial Ca2+ (mCa(2+)) levels. Our results showed that vitrification, especially with dimethyl sulfoxide (DMSO), can induce ER Ca2+ release into the cytoplasm, consequently increasing the [Ca2+]i and mCa(2+) levels. Supplementing the cells with 10 mu M 1,2-bis (o-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid (BAPTA-AM or BAPTA) significantly decreased the [Ca2+](i) level and maintained the normal distribution of cortical granules in the vitrified bovine oocytes, increasing their fertilisation ability and cleavage rate after in vitro fertilisation (IVF). Treating vitrified bovine oocytes with 1 mu M ruthenium red (RR) significantly inhibited the Ca2+ flux from the cytoplasm into mitochondria; maintained normal mCa(2+) levels, mitochondrial membrane potential, and ATP content; and inhibited apoptosis. Treating vitrified oocytes with a combination of BAPTA and RR significantly improved embryo development and quality after IVF.

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