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2.3 数据库分析发现 AKAP12 在乳腺癌组织中低 类型,通过 UALCAN 数据库分析发现 AKAP12 在乳
表达 腺癌各亚型中的蛋白表达情况:正常乳腺组织>
经 UALCAN 数 据 库(https://ualcan.path.uab. Luminal 型乳腺癌>HER2 阳性乳腺癌>TNBC(P <
edu)分析发现AKAP12在乳腺癌、结肠癌、卵巢癌和 0.05,图 2C)。以上结果提示,AKAP12 高表达在乳
透明细胞肾细胞癌中呈低表达,而在子宫内膜癌 腺癌中可能是一种保护性因素,而 AKAP12 的表达
(uterine confined endometrial cancer,UCEC)中呈高 下调可能与乳腺癌患者的预后不良相关。
表达(P < 0.05,图 2B);在乳腺癌中,按分子分型分 2.4 RBM7对AKAP12 RNA和蛋白表达的影响
为 Luminal 型 、人 类 表 皮 生 长 因 子 受 体(human qRT⁃PCR和Western blot结果显示,人源性乳腺
epidermal growth factor receptor 2,HER2)阳性和三 癌细胞MDA⁃MB⁃231中过表达RBM7后,AKAP12的
阴性乳腺癌(triple⁃negative breast cancer,TNBC)3种 RNA和蛋白表达水平明显降低,差异有统计学意义
A
Enrichment plot:
GO_CELL_CYCLE_PHASE_TRANSITION
(ES) 0.40
0.35
0.30
Enrichment score 0.20
0.25
0.15
0.10
0.05
0.00
(Signal2Noise) 2.5 ‘R7_7O’(positively correlated)
Ranked list metric -2.5 0 500 1 000 1 500 2 000 ‘R7_7V5’(negatively correlated) 4 500
Zero cross at 2352
0.0
2 500
3 500
3 000
4 000
Hits
Enrichment profile Rank in ordered dataset
Ranking metric scores
B Expression of AKAP12 across cancers: C
(with tumor and normal samples) Protein expression of AKAP12 in breast cancers
6 3
Tumor Normal *
*
2
4 * *
* * 1 * *
Z⁃value * Z⁃value 0
2
0
-1
-2
-2
-4 -3
Breast Colon Ovarian Clear UCEC Lung Normal Luminal HER2 TNBC
cancer cancer cancer cell cancer (n=18) (n=18) positive (n=16)
RCC (n=18)
A:The main pathway regulated by RBM7 was identified through RNA⁃sequence. B:The expression of AKAP12 in various cancers from UALCAN
database was investigated. breast cancer:normal(n=18),primary tumor(n=125);colon cancer:normal(n=100),primary tumor(n=97);ovarian cancer:
normal(n=25),primary tumor(n=100);clear cell renal cell carcinoma(RCC):normal(n=84),primary tumor(n=110);uterine confined endometrial
cancer(UCEC):normal(n=31),primary tumor(n=100);lung cancer:normal(n=111),primary tumor(n=111). C:The expression of AKAP12 in breast
*
cancer from UALCAN database was investigated. Compared with the Normal group,P < 0.05.
图2 RBM7的主要富集通路及AKAP12在人癌组织中的蛋白表达情况
Figure 2 The main pathway regulated by RBM7 and the protein expression of AKAP12 in cancers

