摘要
目的:研究正常人与脓毒症患者血清差异表达蛋白中C-型凝集素域家族3成员B(CLEC3B)蛋白,探讨目标CLEC3B蛋白作为脓毒症分子标志物的可能性。方法:收集10名健康志愿者(健康组)和18例脓毒症患者(脓毒症组)外周血,利用数据独立采集法对外周血清蛋白数据进行采集,数据上传至i DEP在线平台分析脓毒症患者外周血中差异表达蛋白。并对这些差异蛋白进行生物信息学分析,筛选出脓毒症关键蛋白。酶联免疫吸附法(ELISA)验证并绘制关键蛋白受试者工作特征(ROC)曲线。结果:蛋白质组学分析筛选出138个差异表达蛋白(DEPs),其中34个蛋白显著下调,104个蛋白显著上调。DEPs主要富集在细胞过程、生物调节、生物过程调节、参与绑定、催化活化、分子功能监管、免疫系统、信号转导等。DEPs构建蛋白-蛋白相互作用网络(PPI)筛选出感兴趣的关键蛋白CLEC3B。ELISA实验表明脓毒症组患者CLEC3B蛋白浓度(297.73±22.00)ng/ml显著低于健康组(452.42±191.72)ng/ml,差异具有统计学意义(t=13.13,P=0.000)。CLEC3B蛋白的ROC曲线下面积为0.998,灵敏度为97.73%,特异度为100.0%。结论:CLEC3B蛋白在脓毒症组中显著降低,其灵敏度高,特异度高,可以作为脓毒症潜在的生物学诊断标志物。临床试验注册号中国临床试验注册中心,ChiCTR1900021261。
Objective:To investigate the CLEC3B protein of differentially expressed proteins(DEPs)in serum of normal persons and patients with sepsis,and explore the possibility that target C-type lectin domain family 3 member B(CLEC3B)protein was used as molecular markers of sepsis.Methods:Peripheral bloods of 10 healthy persons and 18 patients with sepsis were collected,and the data of peripheral serum proteins were collected by data independent acquisition(DIA)method.The data were uploaded to iDEP online platform to analyze the DEPs in peripheral blood of patients with sepsis.Bioinformatics analysis of these DEPs was conducted to screen out the key proteins of sepsis.Enzyme linked immunosorbent assay(ELISA)was used to verify and plot the receiver operating characteristic(ROC)curves of key proteins.Results:A total of 138 differentially expressed proteins(DEPs)were screened out by using proteomics analysis,of which 34 kinds of proteins were significantly down-regulated and 104 kinds of proteins were significantly up-regulated.DEPs mostly concentrated in cellular processes,biological regulation,biological process regulation,participating binding,catalytic activation,molecular function regulation,immune system,signal transduction and so on.A protein-protein interaction network was constructed by DEPs,which screened out the key protein CLEC3B.ELISA results showed that the CLEC3B protein concentration[(297.73±22.00)ng/mL]of patients in the sepsis group was significantly lower than that[(452.42±191.72)ng/mL]in the healthy group,and the difference was statistically significant(t=13.13,P=0.000).The area under curve(AUC)value of ROC curve,sensitivity and specificity of CLEC38 protein were respectively 0.998,97.73%and 100.0%.Conclusion:CLEC3B is significantly decreased in sepsis group,which sensitivity and specificity are high.It can be used as a potentially biological diagnostic biomarker of sepsis.
作者
张雨婷
罗福龙
胡迎春
陈睦虎
钟武
Zhang Yuting;LuoFulong;Hu Yingchun;Cheng Muhu;Zhong Wu(Department of Emergency Medicine,The Affiliated Hospital of Southwest Medical University,Luzhou 646000,China)
出处
《中国医学装备》
2024年第1期119-122,129,共5页
China Medical Equipment
基金
四川省科技厅项目(2019JDPT0003,2020YFS0517)
泸州市-西南医科大学联合课题(2019LZXNYDJ32)。
