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A 100 CGGA B 100 Rembrandt C 100 Gravendeel
(%) 75 Log⁃rank P=0.001 (%) 75 Log⁃rank P=0.003 (%) 75 Log⁃rank P < 0.001
IBSP high(n=187)
IBSP high(n=187)
IBSP high(n=187)
IBSP low(n=187)
IBSP low(n=187)
IBSP low(n=187)
Overall survival 50 Overall survival 50 Overall survival 50
25
25
25
0 0 0
0 50 100 0 25 50 75 100 0 50 100 150
Time(months) Time(months) Time(months)
D
Uni_cox P Hazard ratio((95%CI))
IBSP < 0.001 1.385(1.320-1.452) H
Age < 0.001 1.067(1.057-1.077) I
Sex 0.156 1.204(0.932-1.556)
Race 0.755 0.942(0.645-1.374)
Grade < 0.001 3.369(2.278-4.984)
Radiation therapy 0.009 2.071(1.200-3.572)
1 2 3 4 5
Hazard ratio
A-C:Kaplan⁃Meier survival analysis by CGGA(A),Rembrandt(B),and Gravendeel(C)revealed that higher level of IBSP was positively associated
with poor survival. D:Univariate analysis for risk factors of GBM using TCGA dataset.
图2 IBSP表达水平与GBM患者预后相关性
Figure 2 Association between IBSP expression and prognosis of GBM patients
A 1.5 sh⁃ctrl B U87 4 LN229
U87 LN229 ** ** sh⁃IBSP (450 nm) 4 3 2 (450 nm) 3 sh⁃ctrl
sh⁃IBSP
sh⁃ctrl sh⁃IBSP sh⁃ctrl sh⁃IBSP Relative IBSP expression 1.0 2 ** **
IBSP 40 kDa 0.5 Absorbance 1 Absorbance 1
GAPDH 35 kDa 0 0 0
U87 LN229 0 1 2 3 0 1 2 3
Time(d) Time(d)
sh⁃ctrl sh⁃IBSP sh⁃ctrl sh⁃IBSP sh⁃ctrl sh⁃IBSP
C D E
U87 U87 U87
LN229 LN229 LN229
sh⁃ctrl sh⁃ctrl
sh⁃ctrl
500 sh⁃IBSP 300 ** sh⁃IBSP 1.5 sh⁃IBSP
** **
** **
400 200 1.0 **
Colony number 300 Invasive ccll number 100 Relative invasion area 0.5
200
100
0 0 0
U87 LN229 U87 LN229 U87 LN229
A:The validation of IBSP knockdown efficiency by Western blot. B:Cell growth of control or IBSP depleted GBM cells was measured by CCK⁃8
assays. C:Cell proliferation of control or IBSP depleted GBM cells was measured by colony formation assays. D:Cell invasion of control or IBSP depleted
GBM cells was measured by transwell assays(×200). E:Cell invasion of control or IBSP depleted GBM cells was measured by 3D tumor spheroid
**
invasion assays(×200). P < 0.01(n=3).
图3 敲低IBSP抑制GBM细胞增殖和侵袭
Figure 3 IBSP knockdown impaired cell proliferation and invasion of GBM cells

