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ID:42658325
大小:18.04 KB
页数:7页
时间:2019-09-19
《医学论文-抗组氨酰-tRNA合成酶单克隆抗体的制备及初步鉴定》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、医学论文-抗组氨酰-tRNA合成酶单克隆抗体的制备及初步鉴定【摘要】 制备均一性和特异性高的抗组氨酰-tRNA合成酶抗体,为研究皮肌炎和多肌炎的检测提供方法,为制备检测试剂盒提供原料。【方法】采用常规融合和间接ELISA检测法,获取杂交瘤细胞株;ProteinGSepharose4FF和SephadexG50结合对含有单克隆抗体的腹水进行纯化;SDS-PAGA电泳技术进行单克隆抗体的鉴定。【结果】筛选获得了2株稳定分泌阳性抗体的杂交瘤细胞株,分别命名为W001和W002;杂交瘤细胞克隆后,100%的检测孔保持了分泌抗组氨酰-tRNA合成酶抗体的能力;腹水纯化达到了较理想的效果;
2、该2株单克隆抗体能特异性针对组氨酰-tRNA合成酶,并能跟天然的蛋白结合。【结论】所制备的均一性和特异性高的抗组氨酰-tRNA合成酶抗体,可直接用于在ELISA、免疫印迹、免疫组化学等研究方面,达到了试验的目的。【关键词】 组氨酰-tRNA合成酶抗组氨酰-tRNA合成酶单克隆抗体鉴定 Abstract:【Objective】Toproduceanti-histidyl-tRNAsynthetase,whichenjoyhighdegreeofhomogeneityanddistinction,toprovidethetestmethodsforthestudyofthedis
3、easesofdermatomyositisandpolymyositis.Besides,toproducematerialsforthetestliquid.【Methods】WiththeregularcombinedmethodsavailableandindirectELISAtoobtainhybridomacelllines;topurifytheasciteswithmonoclonalantibodyinthecombineduseofProteinGSepharose4FFandSephadexG50;toidentifymonoclonalantibody
4、withtheelectrophoresistechnique.【Results】Twohybridomacelllines,namedW001andW002,havebeenfoundintheresearch,whichcansecreteanti-histidyl-tRNAsynthetasemonoclonalantibodystably.Afterthecellsofhybridomabeingcloned,100%checkingholeskeepthecapabilityofsecretinganti-histidyl-tRNAsynthetasemonoclon
5、alantibody.AndtheascitesofthemonoclonalantibodyhasbeenpurifiedbyProteinGSepharose4FFandSephadexG50,inwhichthepurificationwassatisfying.Inaddition,thetwomonoclonalantibodiesshowedtheirabilitytocomposemold,andtointegratewithnaturalalbumen.【Conclusion】Theanti-histidyl-tRNAsynthetasemonoclonalan
6、tibodiesinthisstudyarehomogeneousanddistinctive,whichcanbeuseddirectlyintheresearchofELISA,WesternBlotandImmunohistochemistryetc.Obviously,theaimofthisresearchhasbeenachieved. Keywords:histidyl-tRNAsynthetase;anti-histidyl-tRNAsynthetase;monoclonalantibody;identification 抗组氨酰-tRNA合成酶抗体是一类结
7、缔组织病中的多肌炎(polymyositis)和皮肌炎(dermatomyositis,PM/DM)的标志性自身抗体。PM/DM指横纹肌弥漫性炎症疾患,主要累及对称性的近端肢带肌,颈和咽部肌肉无力和萎缩,严重者导致心肌、呼吸肌群受累,引起死亡。只出现肌痛肌无力现象者称多肌炎;在多肌炎的基础上,出现典型皮疹者称皮肌炎。PM/DM是自身免疫性疾病,临床检验发现25%~30%的患者含抗组氨酰-tRNA合成酶抗体[1](临床上又称抗Jo-1抗体),而其他抗合成酶抗体在PM/DM中的阳性率仅为1%~3
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