›› 2018, Vol. 45 ›› Issue (9): 2537-2543.doi: 10.16431/j.cnki.1671-7236.2018.09.025

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Effect of Adding Ge-132 on Bovine Embryo Development Potential in vitro

ZHAO Yuhan1, YAO Xuerui1, JIANG Wenjie1, WANG Huaqing1, XU Yongnan2, GAO Qingshan1   

  1. 1. Department of Animal Science, Agricultural College of Yanbian University, Yanji 133000, China;
    2. Department of Animal Medicine, Agricultural College of Yanbian University, Yanji 133000, China
  • Received:2018-02-26 Online:2018-09-20 Published:2018-09-26

Abstract:

This study was aimed to investigate the effect of carboxyethylgermanium sesquioxide (Ge-132) on the development rate of embryos,the number of embryonic cells,the early embryonic reactive oxygen species (ROS) level and the related apoptotic genes in the embryo after activation of bovine parthenogenesis.The effects of different concentrations of Ge-132 (0,10,100 and 200 μg/mL) on the embryo development of parthenogenetically activated bovine embryos were studied,Hoechst staining was performed on the 8th day embryos,the number of cells was counted under the microscope.The ROS level was detected in the early embryos by DCFH-DA staining,and the data were analyzed statistically after the measurement of fluorescence intensity by Image J.In addition,the apoptosis related genes (Caspase-3,Bax,Bcl-xl and Survivin) in the embryo were analyzed by RT-PCR method.The results showed that there was no significant difference in the embryo rate between 10 μg/mL Ge-132 treatment and control groups (P>0.05),but 10 μg/mL Ge-132 could reduce the ROS level in the one cell stage.The number of total cells increased significantly in 10 μg/mL Ge-132 treatment group than that of control group (P<0.05).Furthermore,by detecting the mRNA transcriptional level of apoptosis related genes,it was found that compared with control group,the expression level of the apoptotic gene Caspase-3 was significantly decreased in 10 μg/mL Ge-132 treatment group (P<0.05),whereas the expression level of anti-apoptotic gene Survivin was significantly increased in 10 μg/mL Ge-132 treatment group (P<0.05).In conclusion,the supplementation of 10 μg/mL Ge-132 to the early embryo culture medium could reduce the intracellular ROS level and the apoptosis induced by oxidative stress in the embryo,thereby improving the developmental potential of the bovine embryos after parthenogenetic activation.

Key words: bovine; embryo; Ge-132; ROS; apoptosis

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