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1、分類號(hào)Q75學(xué)校代碼10129UDC577學(xué)號(hào)2008210021Rab7負(fù)向調(diào)控巨噬細(xì)胞中TLR34信號(hào)轉(zhuǎn)導(dǎo)通路的研究ResearchonthenegativeregulationofRab7ontheTLR34signalingpathwaysinmacrophages申請(qǐng)人:王寧飛學(xué)科門類:理學(xué)學(xué)科專業(yè):生物化學(xué)與分子生物學(xué)研究方向:天然免疫的調(diào)控指導(dǎo)教師:王玉珍副教授論文提交日期:二〇一一年六月Researchonthenega
2、tiveregulationofRab7ontheTLR34signalingpathwaysinmacrophagesAbstractTherecoganitionofthestructuralcomponentsmetabolitesofpathogenicmicroganismbyTolllikereceptscaniniatiateinnateimmunitybypromotingtheproductionofcytokines
3、chemokinesthusconstituethefirstlineofdefencetopathogenicmicroganism.StudyontheTolllikerecepthasbeenapopularconcerninimmunologicalresearch.HowevertheactivationofTLRsisadoubleedgedswd.OnonehactivationofTLRsplayavitalrolein
4、theinnateadaptiveimmuneresponsesontheotherhoverreactionofthesignalingofTLRshasreptedtobeassociatedwithacutechronicdiseases.Therefe,negativeregulationontheTLRsignalingpathwaysbecomeahotissue.Objective:Toestablishanalyzeth
5、ebiologicalacteristicsoftransfmedmacrophagecelllinesstablyexpressingRab7itsdominantnegativemutantRab7T22NstudytheproductionofcytokinesintransfmedmacrophagecelllinesafterstimulationwithLPSPolyI:C.Methods:theeukaryoticexpr
6、essionvectsofRab7Rab7T22NweretransfectedintoRAW264.7cellsbyliposomescreenedwithG418.TheG418resistantcolonieswereobtainedamplified.ThetransfmedcelllineswereidentifiedbyRTPCRRealTimePCRWesternBlot.Theacteristicsoftransfmed
7、celllineswereanalyzedbyobservingthecellmphologyMTTmethods.TheproductionofcytokinesweremeasuredaftertransfmedcelllinesstimulationwithLPSPolyI:C.Results:ComparedwiththecontrolgroupthemRNAproteinexpressionofRab7weresignific
8、antlyimprovedincelllinestransfectedwithRab7Rab7T22N.OverexpressionofRab7changedthecellmphologyinhibitedtheproliferationofRaw264.7cellswhileoverexpressionofRab7T22NpromotedtheproliferationofRaw264.7cells.OverexpressionofR
9、ab7significantlyinhibitedtheproductionofcytokinesinLPSpolyI:Cstimulatedmacrophages.TheproductionofcytokineswasrestedinRab7T22Ncellline.Conclusion:OverexpressionofRab7inhibitstheproliferationofmacrophagessuppressestheprod
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