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時間:2019-02-02
《β2受體激動劑對小鼠骨髓來源的樹突狀細胞功能的影響》由會員上傳分享,免費在線閱讀,更多相關內容在學術論文-天天文庫。
1、Dz一受體激動劑對小鼠骨髓來源的樹突狀細胞功能的影響中文摘要B2一受體激動劑對小鼠骨髓來源的樹突狀細胞功能的影響研究目的:以小鼠骨髓來源的樹突狀細胞(BMDC)為研究目標,通過加入不同濃度的p2受體激動劑沙丁胺醇處理的方法,研究p2受體激動劑對BMDC的形態(tài)、凋亡、分化成熟、吞噬、分泌、刺激T細胞增殖等功能的影響。以此來探索B2受體激動劑對于支氣管哮喘治療的新機制。研究方法:采用GM.CSF體外擴增C57BL/6小鼠BMDC的方法,于BMDC培養(yǎng)第6天給予不同濃度的沙丁胺醇干預,于第7天加入外源性脂多糖(LPS),于培養(yǎng)第8天收集BMDC。光鏡
2、及電鏡下觀察BMDC的形態(tài)變化;流式細胞儀檢測BMDC的凋亡情況及表面共刺激分子CD80、CD86、CD40、CDl1e+及MHC—II類分子的表達;流式細胞儀檢測BMDC對于外源性抗原DEXTRAN的吞噬能力;AlamarBlue法檢測BMDC刺激同種小鼠脾T淋巴細胞增殖反應的能力;ELISA法檢測上清中細胞因子IL一12p70的水平。研究結果:①10-4mol/1沙丁胺醇作用于小鼠BMDC48小時后,能使其MHC.II、CD86的平均熒光強度降低45%.55%;②LPS刺激BMDC成熟的飽和濃度為0.1llg/rnl,超過這一濃度的LPS對
3、BMDC成熟的促進作用逐漸減弱;@10。mol/L沙丁胺醇可明顯誘導BMDC凋亡,細胞的晚期凋亡率明顯增高(P4、:沙丁胺醇能夠抑制小鼠BMDC的成熟,增強其處理抗原的能力,抑制其刺激T細胞增殖的能力,抑制其分泌細胞因子IL-12p70的水平。關鍵詞:支氣管哮喘,樹突狀細胞,沙丁胺醇,T淋巴細胞D:一受體激動劑對小鼠骨髓來源的樹突狀細胞功能的影響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、:沙丁胺醇能夠抑制小鼠BMDC的成熟,增強其處理抗原的能力,抑制其刺激T細胞增殖的能力,抑制其分泌細胞因子IL-12p70的水平。關鍵詞:支氣管哮喘,樹突狀細胞,沙丁胺醇,T淋巴細胞D:一受體激動劑對小鼠骨髓來源的樹突狀細胞功能的影響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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