中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (13): 2024-2029.doi: 10.12307/2024.124

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

不同培养基对小鼠卵母细胞体外成熟质量及发育潜能的影响

田  银1,赵艳华2,黄国宁1,李竞宇1   

  1. 1重庆市妇幼保健院、重庆医科大学附属妇女儿童医院生殖医学中心,重庆市   400013;2哈尔滨医科大学,黑龙江省哈尔滨市   150081
  • 收稿日期:2023-02-07 接受日期:2023-03-21 出版日期:2024-05-08 发布日期:2023-08-28
  • 通讯作者: 李竞宇,博士,副研究员,重庆市妇幼保健院、重庆医科大学附属妇女儿童医院生殖医学中心,重庆市 400013 黄国宁,主任医师,重庆市妇幼保健院、重庆医科大学附属妇女儿童医院生殖医学中心,重庆市 400013
  • 作者简介:田银,女,1994年生,重庆市人,汉族,2019年重庆医科大学毕业,硕士,研究实习员,主要从事卵子及胚胎发育相关研究。
  • 基金资助:
    1重庆市妇幼保健院、重庆医科大学附属妇女儿童医院生殖医学中心,重庆市   400013;2哈尔滨医科大学,黑龙江省哈尔滨市   150081

Effects of different culture media on quality and developmental potential of mouse oocytes after in vitro maturation

Tian Yin1, Zhao Yanhua2, Huang Guoning1, Li Jingyu1   

  1. 1Chongqing Health Center for Women and Children; Center for Reproductive Medicine, Women and Children’s Hospital of Chongqing Medical University, Chongqing 400013, China; 2Harbin Medical University, Harbin 150081, Heilongjiang Province, China
  • Received:2023-02-07 Accepted:2023-03-21 Online:2024-05-08 Published:2023-08-28
  • Contact: Li Jingyu, MD, Associate researcher, Chongqing Health Center for Women and Children; Center for Reproductive Medicine, Women and Children’s Hospital of Chongqing Medical University, Chongqing 400013, China Huang Guoning, Chief physician, Chongqing Health Center for Women and Children; Center for Reproductive Medicine, Women and Children’s Hospital of Chongqing Medical University, Chongqing 400013, China
  • About author:Tian Yin, Master, Assistant researcher, Chongqing Health Center for Women and Children; Center for Reproductive Medicine, Women and Children’s Hospital of Chongqing Medical University, Chongqing 400013, China
  • Supported by:
    1Chongqing Health Center for Women and Children; Center for Reproductive Medicine, Women and Children’s Hospital of Chongqing Medical University, Chongqing 400013, China; 2Harbin Medical University, Harbin 150081, Heilongjiang Province, China

摘要:


文题释义:

时差成像(Time-Lapse):胚胎培养过程中,摄像机在相同的时间间隔内对培养的胚胎连续拍照,以获得胚胎在整个培养过程中的持续变化过程。
受精后钙震荡:精子进入卵母细胞释放磷脂酶Cζ,激活钙调蛋白-三磷酸肌醇信号通路,使储存于内质网腔中的钙离子通过三磷酸肌醇受体返回胞质中,胞浆内钙离子迅速升高诱发卵母细胞钙震荡。


背景:近年,未成熟卵母细胞体外成熟技术的需求逐渐增加。卵母细胞成熟受多种因素影响,其中培养基的选择尤为重要,目前尚无统一方案。

目的:用不同成熟培养基对生发泡期卵母细胞体外成熟,研究其对卵母细胞质量及发育潜能的影响。
方法:用G-1TM PLUS培养基、CZB培养基和M16培养基对生发泡期卵母细胞体外成熟,并以体内成熟卵母细胞为对照组,比较各组间的体外受精和早期胚胎发育能力。对于各组成熟后卵母细胞,采用免疫荧光方法评估线粒体功能,共聚焦显微镜实时成像系统检测钙震荡情况。

结果与结论:①3组之间第一极体排出率无明显差异(P > 0.05);②G-1TM PLUS组体外受精率(52.86±11.24)%高于M16组(37.76±6.70)%和CZB组(30.62±5.51)%;CZB组的囊胚率(36.23±6.63)%低于对照组(78.16±4.17)%、G-1TM PLUS组(55.75±7.63)%和M16组(53.36±6.33)%;③与对照组相比,仅CZB组的纺锤体长宽比增加;④CZB组线粒体功能差于对照组、G-1TM PLUS组及M16组,并出现CZB组线粒体异常凝集现象;⑤受精后CZB组及M16组的钙震动频率显著高于G1组和对照组。综上所述,在小鼠卵母细胞体外成熟过程中,G-1TM PLUS、CZB及M16培养基的体外成熟率无差异,但G-1TM PLUS培养基有更高的受精率和囊胚形成率。

https://orcid.org/0009-0000-1965-7406 (田银) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 卵母细胞, 体外成熟, 培养基, 钙震荡, 体外受精, 胚胎发育

Abstract: BACKGROUND: In recent years, the demand for in vitro maturation of immature oocytes has increased. Oocyte maturation is affected by many factors, among which the selection of medium is particularly important, and there is currently no unified plan. 
OBJECTIVE: To compare the in vitro maturation of germinal vesicle stage oocytes with different maturation media and to investigate its effects on oocyte quality and developmental potential. 
METHODS: Germinal vesicle oocytes were matured in G-1TM PLUS medium, CZB medium and M16 medium, and mature oocytes in vivo were used as control group to compare in vitro fertilization and early embryo development among various groups. The immunofluorescence method was used to evaluate mitochondrial function in mature oocytes of each group. Calcium oscillation was detected by confocal microscopy real-time imaging system.
RESULTS AND CONCLUSION: (1) There was no significant difference in the first polar body ejection rate among the three groups (P > 0.05). (2) The rate of in vitro fertilization was higher in the G-1TM PLUS group (52.86±11.24)% than that in the M16 group (37.76±6.70)% and the CZB group (30.62±5.51)%. The blastocyst rate was lower in the CZB group (36.23±6.63)% than that in the control group (78.16±4.17)%, G-1TM PLUS group (55.75±7.63)% and M16 group (53.36±6.33)%. (3) Compared with the control group, the length-to-width ratio of the spindle in the CZB group increased (P < 0.005). (4) The mitochondrial function of the CZB group was worse than that of the control group, G-1TM PLUS group and M16 group, and abnormal mitochondrial agglutination occurred in the CZB group. (5) The frequency of calcium oscillations in the CZB and M16 groups was significantly higher than that in the G1 and control groups. In conclusion, during in vitro maturation of mouse oocytes, in vitro maturation rate was not significantly different among G-1TM PLUS, CZB and M16 media, but the G-1TM PLUS medium had a higher rate of fertilization and blastocyst formation.

Key words: oocyte, in vitro maturation, culture medium, calcium oscillations, in vitro fertilization, embryo development

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