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1.中国中医科学院 中药研究所,北京 100700
2.北京脑科学与类脑研究中心,北京 102206
Received:30 April 2021,
Published Online:29 July 2021,
Published:05 January 2022
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周瑞,高金环,郭非非等.基于转录组学和蛋白质组学的黄连素抗脑缺血关键转录因子分析[J].中国实验方剂学杂志,2022,28(01):100-108.
ZHOU Rui,GAO Jin-huan,GUO Fei-fei,et al.Analysis of Crucial Transcription Factors of Berberine Against Cerebral Ischemia Based on Transcriptomics and Proteomics[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):100-108.
周瑞,高金环,郭非非等.基于转录组学和蛋白质组学的黄连素抗脑缺血关键转录因子分析[J].中国实验方剂学杂志,2022,28(01):100-108. DOI: 10.13422/j.cnki.syfjx.20211849.
ZHOU Rui,GAO Jin-huan,GUO Fei-fei,et al.Analysis of Crucial Transcription Factors of Berberine Against Cerebral Ischemia Based on Transcriptomics and Proteomics[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):100-108. DOI: 10.13422/j.cnki.syfjx.20211849.
目的
2
在确定黄连素保护脑缺血的基础上,采用转录组和蛋白质组测序的方法探究黄连素抗脑缺血的关键转录因子(TFs)。
方法
2
采用线栓法制备大脑中动脉栓塞(MCAO)模型,并将其分为假手术组、模型组及黄连素低、高剂量组(37.5,75 mg·kg
-1
·d
-1
),连续灌胃7 d后处死大鼠,取脑组织。通过Longa评分法和脑梗死率测定进行药效学评价,采用酶联免疫吸附测定试验(ELISA)测定白细胞介素-1
β
(IL-1
β
),肿瘤坏死因子-
α
(TNF-
α
)和单核细胞趋化蛋白-1(MCP-1)的表达。采用RNA-Seq技术检测黄连素干预前后的差异表达基因(DEGs),使用DAVID 6.8对DEGs进行富集分析;通过catTFREs技术检测黄连素干预前后的差异TFs,使用DAVID 6.8和STRING 11.0进行富集分析和TFs关联分析;通过整合TFs活性及其下游靶基因的变化情况,识别关键TFs,并通过Cytoscape 3.7.1构建相关的调控网络。
结果
2
与假手术组比较,模型组大鼠神经功能显著缺损(
P
<
0.01);与模型组比较,黄连素低、高剂量组均能显著减轻大鼠神经功能损伤(
P
<
0.01),并降低脑梗死率(
P
<
0.01)。转录组数据分析表明黄连素主要是通过影响细胞黏附、脑发育、神经元迁移、钙信号通路、环磷酸腺苷信号通路、炎症反应等生物学过程和信号通路参与脑缺血后的恢复过程。蛋白质组数据分析表明黄连素干预后的差异表达TFs主要通过调控细胞分化、免疫系统过程、细胞增殖等生物学过程干预脑缺血。此外,对TFs和DEGs的整合分析发现,转录因子CP2样1(TFCP2L1),核因子红细胞2相关因子1(NFE2L1),神经源性分化蛋白6(NeuroD6)和POU域类2转录因子1(POU2F1)4个TFs是黄连素介导的抗脑缺血再灌注损伤的关键TFs。
结论
2
黄连素对脑缺血再灌注损伤具有明显的保护作用,其关键TFs有TFCP2L1,NFE2L1,NeuroD6和POU2F1。
Objective
2
On the basis of determining the protective effect of berberine (BBR) on cerebral ischemia, crucial transcription factors (TFs) of BBR against cerebral ischemia was identified by using transcriptome and proteome sequencing.
Method
2
The model of middle cerebral artery occlusion (MCAO) was established by thread embolization. The sham operation group, model group, low-dose group of BBR (dose of 37.5 mg·kg
-1
·d
-1
) and high-dose group of BBR (75 mg·kg
-1
·d
-1
) were set up. The rats were killed after continuous intragastric administration for 7 days. The pharmacodynamics was evaluated by Longa score and cerebral infarction rate, and the expressions of inflammatory cytokines, such as interleukin (IL)-1
β
, tumor necrosis factor (TNF)-
α
and monocyte chemotactic protein-1 (MCP-1) were measured by enzyme-linked immunosorbent assay (ELISA). Then, RNA-Seq technique was used to detect the differentially expressed genes (DEGs) before and after BBR intervention, and DAVID 6.8 was used for enrichment analysis of DEGs. CatTFREs technique was used to detect differential TFs before and after BBR intervention, and DAVID 6.8 and STRING 11.0 were used for enrichment analysis and TFs association analysis. Finally, by integrating the activity of TFs and the changes of downstream target genes, crucial TFs were identified and the related regulatory network was constructed by Cytoscape 3.7.1.
Result
2
Compared with the sham operation group, the neurological impairment was significant in the model group (
P
<
0.01), and compared with the model group, the low and high dose BBR groups could significantly reduce the neurological function damage (
P
<
0.01) and decrease the rate of cerebral infarction (
P
<
0.01). Transcriptome data analysis showed that BBR was involved in the recovery process after cerebral ischemia mainly by affecting cell adhesion, brain development, neuron migration, calcium signaling pathway, cyclic adenosine monophosphate (cAMP) signaling pathway, inflammatory response and other related functions and signaling pathways. Proteomic data analysis showed that the differentially expressed TFs after BBR intervention interfered with cerebral ischemia mainly by regulating cell differentiation, immune system process, cell proliferation and other biological processes. In addition, integration analysis of TFs and DEGs revealed that transcription factor CP2-like 1 (TFCP2L1), nuclear factor erythroid-2 like 1 (NFE2L1), neurogenic differentiation protein 6 (NeuroD6) and POU domain, class 2, transcription factor 1 (POU2F1) were crucial TFs against cerebral ischemia-reperfusion injury mediated by BBR.
Conclusion
2
BBR has obvious protective effect on cerebral ischemia-reperfusion injury and its crucial TFs include TFCP2L1, NFE2L1, NeuroD6 and POU2F1.
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