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第44卷第12期 尹建星,成张淳,王协锋,等. IBSP激活NF⁃κB通路促胶质母细胞瘤恶性进展[J].
2024年12月 南京医科大学学报(自然科学版),2024,44(12):1662-1670 ·1665 ·
A Rembrandt 15 Gravendeel B **
Relative IBSP expression 15 5 Relative IBSP expression 10 5 Relative IBSP expression 12 8 4
**
**
10
0 0 0
NHA U87 LN229 LN18 T98G D54
NBT GBM NBT GBM
**
Relative IBSP expression 12
C 8
NHA U87 LN229 LN18 T98G D54 6
IBSP 40 kDa 4
GAPDH 35 kDa 2
0 **
NHA U87 LN229 LN18 T98G D54 **
6
D **
Type
5 4
Show all Hide all
Astrocytoma 7 608
4 GBM 40 172 Relative IBSP expression 2
Oligodendroglioma 12 048
UMAP_2 3 Expression of IBSP Recurrent GBM 40 172 0
2 -2
Oligodendroglioma
Recurrent GBM
1 GBM Astrocytoma
0
UMAP_1
UMAP_1
E TCGA CGGA Rembrandt Gravendeel
** ** ** **
** 8 ** ** **
15
Relative IBSP expression 10 5 0 Relative IBSP expression 10 6 4 2 Relative IBSP expression 15 5 Relative IBSP expression 15 5
10
10
-5
Ⅱ Ⅲ Ⅳ -2 0 Ⅱ Ⅲ Ⅳ 0 Ⅱ Ⅲ Ⅳ 0 Ⅱ Ⅲ Ⅳ
Grade Grade Grade Grade
A:The expression of IBSP in normal brain tissues(NBT)and glioblastoma(GBM)samples from Rembrandt(NBT,n=28,GBM,n=219)and Grav⁃
endeel(NBT,n=8,GBM,n=159). B:qRT⁃PCR results of IBSP expression in NHA,U87,LN229,LN18,T98G,and D54 cells(n=3). C:Western blot
results of IBSP expression in NHA,U87,LN229,LN18,T98G,and D54 cells. D:The expression of IBSP in glioma samples from single cell dataset
(GSE182109)showed by UMAP plot. E:The expression of IBSP in different grade samples from TCGA(gradeⅡ,n=226,gradeⅢ,n=244,gradeⅣ,n=
150),CGGA(gradeⅡ,n=291,gradeⅢ,n=334,gradeⅣ,n=388),Rembrandt(gradeⅡ,n=98,gradeⅢ,n= 85,gradeⅣ,n=130),and Gravendeel(grade
**
Ⅱ,n=24,gradeⅢ,n=85,gradeⅣ,n=159). P < 0.01.
图1 IBSP在GBM样本及细胞系中的表达
Figure 1 The expression of IBSP in GBM samples and cell lines
IBSP敲低则导致细胞凋亡水平显著增高(P < 0.05, 2.5 IBSP激活NF⁃κB信号通路
图4H)。Western blot检测发现,过表达IBSP可显著 利用 TCGA 数据进行基因集富集分析(gene set
缩短敏感细胞中凋亡标志物γ⁃H2AX 的表达时间, enrichment analysis,GSEA)分析发现,IBSP表达水平
而敲低ISBP可显著延长γ⁃H2AX的表达时间(图4I、 与NF⁃κB信号通路激活显著正相关(P < 0.05,图5A),
J)。上述结果提示,IBSP可促GBM化疗耐药。 提示 IBSP 可能通过激活 NF⁃κB 信号通路维持 GBM

