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1.贵州医科大学 民族药与中药开发应用教育部工程研究中心,省部共建药用植物功效与利用国家重点实验室,贵阳 550004
2.贵州医科大学 贵州省药物制剂重点实验室,贵阳 550004
3.贵州医科大学 药学院,贵阳 550025
陆定艳,硕士,助理实验师,从事中药药理学研究工作,E-mail:ldy_2021@126.com
刘亭,博士,教授,从事中药药理学研究工作,E-mail:liuting@gmc.edu.cn
收稿日期:2021-05-29,
网络出版日期:2021-10-15,
纸质出版日期:2022-01-05
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陆定艳,吴忠秀,孙佳等.基于蛋白质组学分析参芎葡萄糖注射液拮抗H2O2诱导H9c2细胞氧化损伤的作用机制[J].中国实验方剂学杂志,2022,28(01):141-149.
LU Ding-yan,WU Zhong-xiu,SUN Jia,et al.Proteomics Analysis of Mechanism of Shenxiong Glucose Injection in Antagonizing H2O2-Induced Oxidative Damage in H9c2 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):141-149.
陆定艳,吴忠秀,孙佳等.基于蛋白质组学分析参芎葡萄糖注射液拮抗H2O2诱导H9c2细胞氧化损伤的作用机制[J].中国实验方剂学杂志,2022,28(01):141-149. DOI: 10.13422/j.cnki.syfjx.20211417.
LU Ding-yan,WU Zhong-xiu,SUN Jia,et al.Proteomics Analysis of Mechanism of Shenxiong Glucose Injection in Antagonizing H2O2-Induced Oxidative Damage in H9c2 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):141-149. DOI: 10.13422/j.cnki.syfjx.20211417.
目的
2
利用串联质谱标记(TMT)定量蛋白质组学技术探究参芎葡萄糖注射液(SGI)拮抗过氧化氢(H
2
O
2
)诱导H9c2细胞氧化损伤的作用机制。
方法
2
体外培养H9c2细胞,H
2
O
2
诱导H9c2细胞建立氧化损伤模型,利用细胞增殖与毒性检测法(MTS)检测细胞存活率,高效液相色谱法(HPLC)进行肽段分级,超高效液相色谱-质谱联用技术检测H9c2细胞的蛋白表达,使用MaxQuant(v1.5.2.8)进行数据检索,高分辨质谱定量分析筛选差异表达蛋白,通过基因本体(GO)和京都基因与基因组百科全书(KEGG)数据库对差异表达蛋白进行生物信息学分析,蛋白免疫印迹法(Western blot)检测细胞内脂质结合蛋白2(Plin2)和原肌球蛋白1(Tpm1)的蛋白表达水平进行验证。
结果
2
通过谱图解析鉴定有48 608个特异性肽段,5 903个可定量蛋白。与模型组比较,SGI组有82个差异表达的蛋白,其中有22个蛋白上调,60个蛋白下调。GO分析结果显示,差异表达蛋白主要参与程序性细胞死亡调节、细胞增殖调控、心血管系统发育和细胞迁移等生物进程。KEGG分析结果表明,这些蛋白与过氧化物酶体增殖物激活受体(PPAR),黏着斑和磷脂酰肌醇3-激酶/蛋白激酶B(PI3K/Akt),Ras相关蛋白1(Rap1)等通路有关。Western blot结果显示,与模型组比较,SGI能显著增加Plin2蛋白表达水平,显著降低Tpm1蛋白表达水平(
P
<
0.01),与蛋白质组学结果一致。
结论
2
提示SGI可能通过调控PPAR,黏着斑,PI3K/Akt和Rap1等通路抑制细胞凋亡,从而拮抗H
2
O
2
诱导细胞氧化损伤,但需要后续实验进一步验证研究。
Objective
2
To explore the mechanism of Shenxiong glucose injection (SGI) in inhibiting hydrogen peroxide (H
2
O
2
)-induced oxidative damage in H9c2 cells by tandem mass tags (TMT)-labeled quantitative proteomics.
Method
2
H9c2 cells cultured
in vitro
were exposed to H
2
O
2
for inducing oxidative damage. The cell viability was measured by cell proliferation and cytotoxicity assay (MTS), followed by peptide fractionation by high performance liquid chromatography (HPLC) and protein expression detection in H9c2 cells by ultrahigh performance liquid chromatography-mass spectrometry. MaxQuant (v1.5.2.8) was utilized for data retrieval, and the high-resolution mass spectrometry was conducted to screen out differentially expressed proteins, which were then subjected to gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis. The protein expression levels of perilipin 2 (Plin2) and tropomyosin 1 (Tpm1) in cells were measured by Western blot.
Result
2
The spectral analysis yielded 48 608 specific peptide fragments and 5 903 quantifiable proteins. Compared with the model group,the SGI group exhibited 82 differentially expressed proteins,of which 22 were up-regulated and 60 were down-regulated. GO analysis results showed that the differentially expressed proteins were mainly involved in biological processes such as programmed cell death regulation,regulation of cell proliferation,cardiovascular system development, and cell migration. As revealed by KEGG analysis, these proteins were mainly related to peroxisome proliferator-activated receptor (PPAR),focal adhesion,phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt),and Ras-related protein 1 (Rap1) pathways. Western blot results demonstrated that compared with the model group,SGI significantly increased the Plin2 protein expression and decreased the Tpm1 protein expression (
P
<
0.01),consistent with the proteomics results.
Conclusion
2
SGI may inhibit cell apoptosis and antagonize H
2
O
2
-induced cell oxidative damage by regulating PPAR,focal adhesion,PI3K/Akt and Rap1 pathways,which should be further verified by subsequent experiments.
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