烧伤大鼠肝组织关键基因的筛选  

Screening of key genes in liver tissue of burned rats

作　　者：林桦 秦超 骆宁 刘宏伟[2] 于泳浩[2] Lin Hua;Qin Chao;Luo Ning;Liu Hongwei;Yu Yonghao(Department of Anesthesiology,Tianjin Medical University General Hospital Airport Hospital,Tianjin 300308,China;Department of Anesthesiology,Tianjin Medical University General Hospital,Tianjin 300041,China)

机构地区：[1]天津医科大学总医院空港医院麻醉科,天津300308 [2]天津医科大学总医院麻醉科,天津300041

出　　处：《中华危重症医学杂志（电子版）》2023年第6期448-452,共5页Chinese Journal of Critical Care Medicine:Electronic Edition

基　　金：天津市麻醉专业科研发展计划项目(TJMZ2021-001);天津市滨海新区卫生健康委科技项目(2022BWKQ019)。

摘　　要：目的通过基因表达综合(GEO)数据库分析,筛选烧伤大鼠肝组织新的标志物,为其治疗提供理论基础.方法采用GEO数据库GSE1860和GSE802数据集,分析24 h烧伤后肝组织的差异基因及共同表达的差异基因.选择3只健康成年雄性Sprague Dawley大鼠,脱毛麻醉后,应用台式超级控温烫伤仪以98℃在大鼠背部致伤10s,制备大鼠烧伤模型.对照组3只大鼠模拟致假伤,脱毛麻醉后以37℃在大鼠背部停留10s.伤后24h,取大鼠肝脏行逆转录-聚合酶链反应(RT-PCR)检测共同的差异基因的表达量.选择大鼠肝脏组织,使用Tabula Muris数据库定位差异基因在其肝脏组织中单个细胞中的表达情况.结果GSE1860数据集烧伤后24 h筛选出81个差异基因;GSE802数据集烧伤后24h筛选出186个差异基因.共同的差异基因2个,分别为Cast、Col11a1.伤后24 h,烧伤组大鼠Cast mRNA[(1.20±0.14)vs.(1.00±0.04),t=5.490,P=0.005]和Col11a1 mRNA[(3.74±0.15)vs.(1.00±0.27),t=41.224,P<0.001]相对表达量均较对照组显著升高.基于Tabula Muris数据库获得枢纽基因在单细胞中的表达情况,结果显示Cast几乎可以表达于全部肝脏细胞中,然而Col11a1仅有少量表达于肝脏细胞.结论通过GEO数据库分析,发现烧伤24 h肝组织中Cast、Col11a1基因表达增加,有可能成为诊断和治疗烧伤后肝脏损伤的靶点.Objective By analyzing the Gene Expression Omnibus(GEO)database,new markers in liver tissue of burned rats were screened to provide a theoretical basis for treatment.Methods The burn-related microarray sets of GSE1860 and GSE802 in the GEO database were analyzed for differential genes in liver tissue at 24 h after the injury.Three healthy adult male Sprague Dawley rats were selected for each group.After dehairing and anesthesia,a burn model was prepared by applying a benchtop super temperature-controlled scalding instrument to the back of the rats at 98℃for 10 s.In the control group,a sham injury was simulated,and the rats were anesthetized by dehairing and then incubated at 37℃for 10 s on the back.The expression of common differential genes was verified by reverse transcription-polymerase chain reaction(RT-PCR)at 24 h after the injury.The liver tissue was selected and the expression of differential genes in a single cell of liver tissue was located using the Tabula Muris database.Results The GSE1860 dataset was screened for 81 differential genes,while the GSE802 dataset was screened for 186 differential genes at 24 h after the injury.There were two common differential genes,namely Cast and Col11a1.At 24 h after the injury,the relative expression of Cast mRNA[(1.20±0.14)vs.(1.00±0.04),t=5.490,P=0.005]and Col11a1 mRNA[(3.74±0.15)vs.(1.00±0.27),t=41.224,P<0.001]was significantly higher in the burn group compared to the control group.About the expression of hub genes in a single cell based on the Tabula Muris database,Cast could be expressed in almost all liver cells;however,Col11a1 was only expressed in a small amount in liver cells.Conclusion The GEO database reveals increased expression of Cast and Colllal genes in liver tissue at 24 h of injury,which could potentially be a target for the diagnosis and treatment of post-burn liver injury.

关 键 词：烧伤 肝组织 基因表达综合数据库 差异基因表达 

分 类 号：R644[医药卫生—外科学]