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第45卷第2期 丁 峰,喻夏飞,朱妍慧,等. SMC1A在乳腺癌中的表达及对乳腺癌细胞凋亡的影响[J].
2025年2月 南京医科大学学报(自然科学版),2025,45(2):245-252 ·249 ·
表3 乳腺癌组织中SMC1A表达与患者临床病理特征的关系
Table 3 Relationship between SMC1A expression in breast cancer tissues and clinicopathological features of patients
[n(%)]
Clinicopathological parameter n Positive Negative P
Age 0.738
<60 years 29 25(86.2) 4(13.8)
≥60 years 19 17(89.5) 2(10.5)
Maximum diameter of tumors 0.827
<2.5 cm 26 23(88.5) 3(11.5)
≥2.5 cm 22 19(86.4) 3(13.6)
Histological grading 0.043
Low⁃moderate differentiation 30 24(80.0) 6(20.0)
High differentiation 18 18(100.0) 0(0)
Molecular types 0.857
Lumina A 18 15(83.3) 3(16.7)
Lumina B 15 13(86.7) 2(13.3)
Overexpression of HER⁃2 13 12(92.3) 1(7.7)
Three negative 2 02(100.0) 0(0)
Stage of TNM 0.027
Stage Ⅰ/Ⅱ 28 22(78.6) 6(21.4)
Stage Ⅲ 20 20(100.0) 0(0)
Lymph node metastasis 0.012
Existent 23 23(100.0) 0(0)
Non⁃existent 25 19(76.0) 6(24.0)
A B C
15 ** 15 *** 10 8 ***
SMC1A staining score 10 5 SMC1A staining score 10 5 SMC1A staining score 6 4
0 0 2 0
(n=28) (n=20) (n=25) (n=23) (n=18) (n=30)
Low⁃moderate
Ⅰ+Ⅱ Ⅲ N0 N1+2 High differentiation
differentiation
A:Statistical analysis of SMC1A expression in breast cancer tissues of TNM stages. B:Statistical analysis of SMC1A expression in breast cancer tis⁃
**
***
sues of N stages. C:Statistical analysis of SMC1A expression in breast cancer tissues of different pathological grades. P < 0.01, P < 0.001.
图3 SMC1A在乳腺癌组织中的表达水平与患者临床特征的关系
Figure 3 Correlation between SMC1A expression and clinical characteristics of breast cancer patients
表达水平,结果显示,与正常乳腺上皮细胞 MCF⁃ 转染 SMC1A siRNA1 的 MCF⁃7 细胞中的 SMC1A 蛋
10A 相比,SMC1A 在 MCF⁃7 中蛋白表达水平较高, 白表达下降最明显(P < 0.05,图4B),后续实验采用
差异有统计学意义(图4A)。随后,向MCF⁃7细胞分 SMC1A siRNA1 敲降细胞 SMC1A 表达。接下来,向
别 转 染 SMC1A siRNA1、SMC1A siRNA2、SMC1A MCF⁃7细胞分别转染SMC1A siRNA1及对照siRNA,
siRNA3 及 对 照 siRNA,并 通 过 Western blot 检 测 采用 Western blot 检测 MCF⁃7 细胞中凋亡相关蛋白
SMC1A的表达;结果显示,与转染对照siRNA相比, 的表达,结果显示与转染对照 siRNA 相比,转染

