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第44卷第7期 苏思璇,尚彦星,段程伟,等. 基于生信分析对脓毒症相关性脑病中神经炎症相关核心基因
2024年7月 的筛选[J]. 南京医科大学学报(自然科学版),2024,44(7):915-926 ·923 ·
A B C
6 2.5 4
*** ** *
Il⁃1β 4 Tnf⁃α 2.0 Inos 3
1.5
Relative mRNA expression 2 Relative mRNA expression 1.0 Relative mRNA expression 2 1
0.5
0 0.0 0
Control LPS Control LPS Control LPS
D E F G
1.5 ** 1.5 3 *** 6
Hdac9 1.0 Gpr183 1.0 ** Lrrc25 2 Nadk 4
Relative mRNA expression 0.5 Relative mRNA expression 0.5 Relative mRNA expression 1 Relative mRNA expression 2
0.0 0.0 0 0
Control LPS Control LPS Control LPS Control LPS
A-C:BV2 microglia were stimulated with LPS(1 μg/mL)for 24 h,and the mRNA levels of Il⁃1β(A),Tnf⁃α(B)and Inos(C)were assessed using
RT⁃qPCR. D-G:RT⁃qPCR detection of mRNA levels of Hdac9(D),Gpr183(E),Lrrc25(F),and Nadk(G)in the LPS⁃induced BV2 microglial activation
*
**
model. P < 0.05,P < 0.01,and *** P < 0.001(n=6).
图5 SAE小胶质细胞炎性活化核心基因的表达验证
Figure 5 Expression verification of the core genes for microglial inflammatory activation in SAE
A 1.5 **
oe⁃ctrl oe⁃HDAC9 1.0 ** *** 1.5 ***
HDAC9/α⁃tubulin Relative protein level (IL⁃1β/α⁃tubulin) iNOS/α⁃tubulin
LPS: - + - + 0.8 *** ***
HDAC9 140 kDa 0.6 1.0 1.0
IL⁃1β 35 kDa 0.4 0.5 0.5
iNOS 130 kDa 0.2
0 0 0
α⁃tubulin 50 kDa LPS - + - + LPS - + - + LPS - + - +
oe⁃ctrl oe⁃HDAC9 oe⁃ctrl oe⁃HDAC9 oe⁃ctrl oe⁃HDAC9
B oe⁃ctrl oe⁃HDAC9 2.0 1.5
p⁃JAK1/α⁃tubulin 1.0 p⁃STAT3/α⁃tubulin
LPS - + - + 1.5 *** ***
p⁃JAK1 140 kDa *** 1.0 ***
JAK1 130 kDa 0.5
p⁃STAT3 75 kDa 0.5
0 0
STAT3 75 kDa LPS - + - + LPS - + - +
oe⁃ctrl oe⁃HDAC9 oe⁃ctrl oe⁃HDAC9
α⁃tubulin 50 kDa
A:BV2 microglia were transduced with lentivirus to overexpress HDAC9(oe⁃HDAC9),with empty vector used as a control(oe⁃ctrl). After stimulat⁃
ing the BV2 microglial cells with LPS,Western blot was performed to detect the protein expression levels of HDAC9,IL⁃1β,and iNOS. B:Western blot
*
**
detection of JAK1,STAT3 protein expression and phosphorylation(p⁃JAK1,p⁃STAT3)levels. P < 0.05,P < 0.01,and *** P < 0.001(n=3).
图6 过表达HDAC9促进小胶质细胞中促炎因子的表达以及JAK1⁃STAT3信号通路磷酸化
Figure 6 Overexpression of HDAC9 promoted the expression of pro⁃inflammatory cytokines and phosphorylation of the
JAK1⁃STAT3 signaling pathway in microglia
SAE 小胶质细胞炎性活化关键基因,并以体外细胞 者和非感染对照组外周血样本中通过WGCNA分析
学实验进行初步验证,旨在为SAE发病机制研究提 得到332个基因与脓毒症临床诊断密切相关;其二为
供新思路和潜在靶点。 LPS刺激小胶质细胞活化的测序数据集GSE103156,
本研究分析了GEO数据库中的两组数据集,其 通过Limma分析筛选到1 272个DEGs。富集分析结
一是 GSE65682 脓毒症基因表达阵列,在脓毒症患 果显示,上述基因集中在免疫应答相关通路,包括