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ID:32238692
大小:2.17 MB
页数:60页
时间:2019-02-02
《β2受体激动剂对小鼠骨髓来源的树突状细胞功能的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、Dz一受体激动剂对小鼠骨髓来源的树突状细胞功能的影响中文摘要B2一受体激动剂对小鼠骨髓来源的树突状细胞功能的影响研究目的:以小鼠骨髓来源的树突状细胞(BMDC)为研究目标,通过加入不同浓度的p2受体激动剂沙丁胺醇处理的方法,研究p2受体激动剂对BMDC的形态、凋亡、分化成熟、吞噬、分泌、刺激T细胞增殖等功能的影响。以此来探索B2受体激动剂对于支气管哮喘治疗的新机制。研究方法:采用GM.CSF体外扩增C57BL/6小鼠BMDC的方法,于BMDC培养第6天给予不同浓度的沙丁胺醇干预,于第7天加入外源性脂多糖(LPS),于培养第8天收集BMDC。光镜
2、及电镜下观察BMDC的形态变化;流式细胞仪检测BMDC的凋亡情况及表面共刺激分子CD80、CD86、CD40、CDl1e+及MHC—II类分子的表达;流式细胞仪检测BMDC对于外源性抗原DEXTRAN的吞噬能力;AlamarBlue法检测BMDC刺激同种小鼠脾T淋巴细胞增殖反应的能力;ELISA法检测上清中细胞因子IL一12p70的水平。研究结果:①10-4mol/1沙丁胺醇作用于小鼠BMDC48小时后,能使其MHC.II、CD86的平均荧光强度降低45%.55%;②LPS刺激BMDC成熟的饱和浓度为0.1llg/rnl,超过这一浓度的LPS对
3、BMDC成熟的促进作用逐渐减弱;@10。mol/L沙丁胺醇可明显诱导BMDC凋亡,细胞的晚期凋亡率明显增高(P4、:沙丁胺醇能够抑制小鼠BMDC的成熟,增强其处理抗原的能力,抑制其刺激T细胞增殖的能力,抑制其分泌细胞因子IL-12p70的水平。关键词:支气管哮喘,树突状细胞,沙丁胺醇,T淋巴细胞D:一受体激动剂对小鼠骨髓来源的树突状细胞功能的影响AbstractEffectsof132AgonistonMurineBoneMarrowDerivedDendriticCellsobjecti◆e:Toinvestigatethemurinebonemarrow-derivedDCs’stimulatedbydifferentconcentrationB2ag5、onist(salbutam01)andobservethefunctionofDCs’smorphology,apoptosis,secretion,phagocytosis,migration,differentiationandSOon.Methods:CultivateC57BL/6mousebonemarrow--derivedDCusingGM—·CSFmediuminvisit,thenadddifferentconcentrationsofsalbutamolatfirst6days,andaddexogenousLPSatfi6、rst7day,collectthematfirst8days.ObservemorphologicalchangesofDC,detectapoptosisofDC,surfacecostimulatorymolecules,CD80,CD86,CD40,CD1c+andMHC—IImolecules、析thflowcytometry,andanalyzethephagocyticfunction,measurecytokineIL一12p70levelsinsupernatantusingELISAassay,checktheallogen7、eicTlymphocyteproliferationresponsecapabilitiesafterDCstimulationusingAlamarBlueResults:(芏)SalbutamolontheroleofBMDCoptimumtimefor48hours,whichCanmakeMHC.II、CD86meanfluorescenceintensityof45—55%lower;(g)LPSCanstimulateBMDCtomatureandthesaturationconcentrationisO.1ug/ml;③10。38、mol/LsalbutamolactsonmouseBMDCleadsthemobviousapoptosis,andthelateapoptosis
4、:沙丁胺醇能够抑制小鼠BMDC的成熟,增强其处理抗原的能力,抑制其刺激T细胞增殖的能力,抑制其分泌细胞因子IL-12p70的水平。关键词:支气管哮喘,树突状细胞,沙丁胺醇,T淋巴细胞D:一受体激动剂对小鼠骨髓来源的树突状细胞功能的影响AbstractEffectsof132AgonistonMurineBoneMarrowDerivedDendriticCellsobjecti◆e:Toinvestigatethemurinebonemarrow-derivedDCs’stimulatedbydifferentconcentrationB2ag
5、onist(salbutam01)andobservethefunctionofDCs’smorphology,apoptosis,secretion,phagocytosis,migration,differentiationandSOon.Methods:CultivateC57BL/6mousebonemarrow--derivedDCusingGM—·CSFmediuminvisit,thenadddifferentconcentrationsofsalbutamolatfirst6days,andaddexogenousLPSatfi
6、rst7day,collectthematfirst8days.ObservemorphologicalchangesofDC,detectapoptosisofDC,surfacecostimulatorymolecules,CD80,CD86,CD40,CD1c+andMHC—IImolecules、析thflowcytometry,andanalyzethephagocyticfunction,measurecytokineIL一12p70levelsinsupernatantusingELISAassay,checktheallogen
7、eicTlymphocyteproliferationresponsecapabilitiesafterDCstimulationusingAlamarBlueResults:(芏)SalbutamolontheroleofBMDCoptimumtimefor48hours,whichCanmakeMHC.II、CD86meanfluorescenceintensityof45—55%lower;(g)LPSCanstimulateBMDCtomatureandthesaturationconcentrationisO.1ug/ml;③10。3
8、mol/LsalbutamolactsonmouseBMDCleadsthemobviousapoptosis,andthelateapoptosis
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