Page 11 - 南京医科大学自然版
P. 11
第44卷第7期 倪 曼,程 丽,郭 爽,等. 腐胺通过线粒体相关内质网膜改善高龄卵母细胞质量[J].
2024年7月 南京医科大学学报(自然科学版),2024,44(7):891-900 ·895 ·
A Young Old Put B
5 ***
Fluorescence intensity of CG signals 2
CG 4 3 *
0 1
Young Old Put
DAPI C
**
40 ***
Mis⁃location of CG (%) 20
30
Merge percentage 10
0
Young Old Put
A:Representative figures of CG distribution in the Young,Old,and Put groups(scale bars=25 μm). B:The statistical analysis of CG signals
*
**
(n=15). C:The statistical analysis of the rates of mislocalized CG in oocytes(n=15). P < 0.05,P < 0.01 and *** P < 0.001. CG:cortical granule.
图2 MⅡ期卵母细胞CG分布
Figure 2 Distribution of CGs in MⅡ⁃stage oocytes
A Young Old Put B
60 *** **
α⁃Tublin (%) 40
Abnormal spindle percentage 20
0
Young Old Put
DAPI C
*
**
40
Misaligned chromosome (%) percentage 30
20
Merge 10
0
Young Old Put
A:Representative images of the spindle morphology and chromosome alignment in metaphase Ⅱ oocytes(scale bars=5 μm). B:The rate of abnormal
*
**
spindles(n=15). C:The rate of misaligned chromosomes(n=15). P < 0.05,P < 0.01 and *** P < 0.001.
图3 MⅡ期卵母细胞纺锤体组装和染色体排列
Figure 3 Spindle assembly and chromosome alignment in MⅡ⁃stage oocytes
2.4 腐胺降低高龄小鼠卵母细胞MAM水平 粒体间距、邻近内质网的线粒体长度与其周长的比
在透射电子显微镜下观察各组小鼠MⅡ期卵母 值两个指标衡量MAM 的数量及状态。统计分析发
细胞内的MAM(图 4A),通常以MAM中内质网和线 现,高龄小鼠 MⅡ期卵母细胞内 MAM 间距显著缩