欢迎来到天天文库
浏览记录
ID:55595559
大小:826.52 KB
页数:4页
时间:2020-05-20
《鼠源性抗人HAAH mAb可变区基因克隆及单链抗体的构建和表达.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、ISSN1007—8738;fChinJCellMollmmuno1)2010,26(5467·论著·文章编号:1007—8738(2010)05—0467-04鼠源性抗人HAAHmAb可变区基因克隆及单链抗体的构建和表达汪桦,薛小平,雷迎峰,宋凯,呼延霆,王伟,杨慧(西北工业大学生命科学院,陕西西安710072;第四军医大学基础部微生物学教研室,陕西西安710032)befurtherstudiedabouttheirbiologicalactivityandapplica-Cloningofthevaria
2、bleregiongenestion,duetotheirhighafinityshowninpreliminarydetection.fromhybridomaagainstHAAHand[Keywords]humanaspartyI/asparaginylbeta。hydroxylase;thenconstructionandexpressionofan-scFv;variableregionofantibody;mAb;pro-ti.HAAHscFvteinexpression[摘要]目的:从分泌抗人类天
3、冬氨酰基B一羟化酶(HAAH)WANGHua。,XUEXiao-ping,脚Ying-feng,SONG单克隆抗体(mAb)的杂交瘤细胞G3/FI1中,克隆出鼠源an—Kai,HUYan—ring,WANGWei,YANGHuiti—HAAHmAb重、轻链可变区基因,构建Anti·HAAH的单链FacultyofLifeSciences,NorthwesternPolytechnicalUniversity,抗体(scFv),并进行scFv基因的蛋白表达。方法:提取杂交Xi’an710072;Departmen
4、tofMicrobiology,FourthMilitary瘤细胞G3/F11的总RNA,通过RT—PCR扩增出V和V基MedicalUniversity,Xi’an710032,China因;再利用重叠延伸PCR(SOE—PCR),通过设计在引物上的linker序列,将VH和V拼接为完整anti-HAAHscFv基因。fAbstractIA:Constructionandexpressionofanti-将测序正确的scFv基因克隆人pHEN1载体,并利用EcoliHAAHsinglechainvariabl
5、efragment(scFv)bycloningofHB215I进行蛋白表达;通过SDS—PAGE,Westernblot分析其thevariableregiongenesfr0manti—HAAHhybridomacells表达状况,ELISA鉴定其抗原结合活性。结果:测序结果显G3/F11.METHODS:TOtaIRNAwasextractedfr0mhybri—示,本实验成功地构建出鼠源anti—HAAHV一linker—VLscFv基domacellsG3/FI1.ByRT-PCR,murineVHa
6、ndVLgenes因,且V、V均具有完整正确的小鼠抗体骨架区和互补决ofmAbwereamplifiedrespectively.Then,Theywereas-定区结构,所得的scFv基因片段全长?4bp,编码248个氨sembledintoVH-linker—VLscFvtemplatebySoE—PCRand基酸。SDS.PAGE和Westernblot分析表明,pHENl—anti—anti—HAAHscFvwasexpressjnEco//byconstructedpHENHAAH在E.coliHB2
7、151可表达为,约27000的可溶性scFv1.Anti—HAAHvector.TheexpressionofAnti-HAAHscFv蛋白,表达量为7.8%。间接ELISA检测显示,可溶性鼠源weredetectedbVSDS-PAGEandWesternblottingandtheanti.HAAHscFv蛋白具有较高的抗原结合活性。结论:成功bindingactivityweredemonstratedbyELISA.RESULTS:扩增出的鼠源anti—HAAHmAbV区和V区基因,并构建为Theana
8、lysisofDNAsequencingshownthatthefull·lengthanti—HAAHscFv基因。然后,利用pHEN1载体对anti—HAAHofconstructedscFvgenewas744bp,encoding248aminoscFv基因进行成功表达,为进一步研究其生物活性及应用奠acids.Moreover,theVHandVLgeneswerefunct
此文档下载收益归作者所有