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《il10基因內(nèi)耳局部治療自身免疫性感音神經(jīng)性聾的實(shí)驗(yàn)研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、IL10基因內(nèi)耳局部治療自身免疫性感音神經(jīng)性聾的實(shí)驗(yàn)研究作者:陳文博,譚長(zhǎng)強(qiáng),董偉達(dá),李玉瑾,蔡文君,郭浪,李王偉【摘要】 目的:探索局部應(yīng)用IL10基因與慢病毒重組載體對(duì)實(shí)驗(yàn)性自身免疫性感音神經(jīng)性聾(ASNHL)的治療作用。方法:采用純化同種內(nèi)耳抗原免疫豚鼠,造成ASNHL動(dòng)物模型,再將重組載體分別經(jīng)鼓階、內(nèi)淋巴囊和圓窗龕局部注射或滲透,觀察聽覺功能和內(nèi)耳病理形態(tài)學(xué)變化,同時(shí)行免疫組織化學(xué)試驗(yàn)了解慢病毒轉(zhuǎn)染和基因產(chǎn)物在內(nèi)耳的分布。結(jié)果:治療前后ABRⅢ波閾值的均值對(duì)比分析結(jié)果顯示,各實(shí)驗(yàn)組局部基因治療后均降低;治療后各實(shí)驗(yàn)組組間比較差
2、異無統(tǒng)計(jì)學(xué)意義。慢病毒主要轉(zhuǎn)染部位是血管紋、Corti器、蝸軸小血管周圍及其內(nèi)淋巴囊等處?;虍a(chǎn)物表達(dá)部位與轉(zhuǎn)染部位基本相同。結(jié)論:重組載體經(jīng)不同途徑均可轉(zhuǎn)導(dǎo)入內(nèi)耳,并在內(nèi)耳表達(dá)基因產(chǎn)物,對(duì)ASNHL發(fā)揮有效的治療作用?!娟P(guān)鍵詞】自身免疫性感音神經(jīng)性聾;基因治療;慢病毒載體 ?。跘bstract]Objective:ToevaluatetherapeuticeffectsoftransferringrecombinantreplicationdefectivelentiviralvectorofinterleukinIL10genewit
3、hGFPmarkedintoinnerear16forlocallytreatingexperimentalautoimmunesensorineuralhearingloss(ASNHL)inguineapig.Methods:Guineapigswereimmunizedwith58kDpurifiedconspecificinnerearantigenandcausedanimalmodelsofautoimmunesensorineuralhearingloss.Theexperimentalgroupswithrecombinant
4、therapeuticgenevectorsinjectingintoinnerearthroughthreeapproaches(tympanicscale,endolymphaticsacandroundwindowmembrane)fortherapyofASNHL.Beforeandaftergenetherapy(7days),auditorybrainstemresponse(ABR)thresholdsweredetermined,andtissueparaffinsectionsoftemporalbonewasmadeand
5、observedbylightmicroscopyandelectronmicroscopy.Immunofluorescenceandenzymeimmunohistochemistrytestswasmadefordetectinglentiviraltransfectionandgeneproductexpression.Results:AftertreatmentthemeanthresholdofABRⅢwaveinexperimentalA,B,Cgroupsloweredthanthatbeforetreatment;andco
6、ntrastingbetweenthesegroupstherewerenosignificantdifference.Lentrivirascarringpurposegenemainlytransferredthepsalterialcord,cortiorgan,cochlearaxis,vesselsandendolymphaticsac,etc.Expressingpartsofgeneproductandthansferingpartsweregenerallythesame.Conclusion:Recombinantrepli
7、cationdefectivelentiviralvectorcantransferintoinnerearthrough16differentapproachesandgenerategeneproduct,andshowstherapeuticeffecttoASNHL. [Keywords]autoimmunitysensorineuralhearingloss;genetherapy;lentiviralvector 1979年McCabe通過對(duì)部分感音神經(jīng)性聾患者的臨床觀察[1],首先提出自身免疫性感音神經(jīng)性聾這一概念(auto
8、immunesensorineuralhearingloss,ASNHL),之后許多相關(guān)專家和學(xué)者對(duì)該病進(jìn)行了大量的實(shí)驗(yàn)與臨床研究,現(xiàn)已證實(shí),ASNHL是一種臨床疾