CN114213532A - 高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其应用 - Google Patents

高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其应用 Download PDF

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CN114213532A
CN114213532A CN202111522402.4A CN202111522402A CN114213532A CN 114213532 A CN114213532 A CN 114213532A CN 202111522402 A CN202111522402 A CN 202111522402A CN 114213532 A CN114213532 A CN 114213532A
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任桂萍
郭笑辰
孙文影
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Northeast Agricultural University
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Abstract

本发明公开了几种高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其应用。本发明提供的几种scFv抗体,包括由重链可变区、轻链可变区以及它们之间的连接区组成;本发明利用抗原‑抗体共表达的细菌展示技术筛选获得了8株scFv抗体,并且与IBDV VP2蛋白和不同的IBDV病毒株具有高亲和力,其可以通过构建突变库筛选出具有高亲和力和中和活性的scFv抗体,用于防治IBD;其也可以用于ELISA法检测IBDV病原。

Description

高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其 应用
技术领域
本发明涉及高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其应用,属于生物技术领域。
背景技术
鸡传染性法氏囊病(Infectious Bursal Disease,IBD)是由鸡传染性法氏囊病毒(Infectious Bursal Disease Virus,IBDV)引起的一种急性、高度接触性传染病, IBDV主要侵害3-12周龄的雏鸡和青年鸡,损伤鸡的中枢免疫器官——法氏囊。具有传播速度快、传染性强、感染率及死亡率均高的特点。该病目前在全球范围内均有分布,是养禽业最重要疾病之一,并且因免疫失败而造成的经济损失巨大。
IBDV可在雏鸡法氏囊中的淋巴细胞,尤其是B淋巴细胞中迅速繁殖,导致免疫抑制,从而可增强机体对其它病原体的易感性并且降低对其它疫苗的反应性。抗体药物目前是有效的治疗药物,高免血清和卵黄抗体在发病早期均可起到良好的效果,但是由于工业化生产可控性差和存在水平传播疾病等原因而受到限制。本发明利用抗原-抗体共表达的细菌展示技术筛选获得了8株具有较高亲和力的抗IBDV的scFv抗体,其可以通过构建突变库筛选出具有高亲和力和中和活性的scFv抗体,用于防治IBD;其也可以用于双抗夹心ELISA法检测病原IBDV的存在。
发明内容
本发明的目的是提供高亲和力的抗鸡传染性法氏囊病毒的scFv抗体及其应用。scFv抗体是由重链可变区、轻链可变区以及它们之间的连接区组成,它们能够与IBDV VP2蛋白高亲和力结合,在治疗或者预防传染性法氏囊病和检测传染性法氏囊病毒的 ELISA试剂盒中具有重要应用。
附图说明
图1为scFv抗体的SDS-PAGE图谱。
图2为ELISA检测scFv抗体对VP2蛋白的特异性和亲和力的结果。
图3为ELISA检测scFv抗体对不同IBDV病毒的特异性和亲和力的结果。
具体实施方式
以下的实施例便于更好地理解本发明,但并不限定本发明。下述实施例中的实验方法,如无特殊说明,均为常规方法。下述实施例中所用的试验材料,如无特殊说明,均为自常规生化试剂商店购买得到的。以下实施例中的定量试验,均设置三次重复实验,结果取平均值。
pET-27b(+)载体:购自Novagen公司,Cat.No.69337-3。大肠杆菌Rosetta:购自Novagen公司,Cat.No.71403-4。鸡传染性法氏囊病活疫苗(Gt株):哈兽研维科生物公司,编号080012122。鸡传染性法氏囊病中等毒力活疫苗(NF8株):扬州威克生物工程有限公司,编号101042056。鸡传染性法氏囊病活疫苗(MB株):ABIC,编号20621150B。鸡传染性法氏囊病活疫苗(B87株):湖南省中岸生物药业有限公司,编号180022026。
包被液(pH9.6):取Na2CO3 0.15g、NaHCO3 0.293g,溶于水并用水定容至100mL。
PBS缓冲液:取NaCl 8g、KCl 0.2g、Na2HPO4.12H2O 3.58g、KH2PO4 0.24g,溶于 1L水。
实施例1、几种scFv抗体及其编码基因的获得
1、抗体库的构建
取IBDV免疫后的鸡脾脏,提取RNA后反转录成cDNA。根据GenBank上的抗体序列,设计出克隆抗体可变区的基因引物,以cDNA为模板,使用PCR的方法克隆抗体可变区基因。将VH与VL片段连接成scFv基因并与细菌展示载体pBFD-Ab-VP2进行连接,构建抗IBDV抗原抗体共表达的细菌表面展示文库。VH约380bp、VL约320bp, VH-Tlinker-VL约740bp。
2、抗体库的筛选
收集转化后全部克隆,经IPTG(0.25mmol/L)诱导4h,经EDTA-MgCl2处理,与兔抗VP2蛋白的多克隆抗体(即实施例4制备的多克隆抗体溶液,工作浓度为1:5 000 倍稀释)及FITC标记的羊抗兔二抗(购自sigma公司,工作浓度为1:500倍稀释) 各孵育1h,PBS洗涤后利用流式细胞仪对其进行筛选。
经三轮筛选后得到8个与VP2蛋白具有高结合能力的scFv单克隆抗体,将其分别命名为scFv-11、scFv-12、scFv-13、scFv-14、scFv-15、scFv-16、scFv-17和scFv-18 抗体。
8种scFv抗体的氨基酸序列如序列表的序列1~8所示,其核苷酸序列如序列表的序列9~16所示。
实施例2、8种scFv抗体的制备
1、以实施例1中筛选获得的能够表达8个具有高结合能力的单克隆抗体的质粒为模板,用F1和R1组成的引物分别对8个scFv抗体基因进行PCR扩增,得到PCR扩增产物。
F1:5'–CGCCATATGGCCGTGACGTTGGACGAG-3';
R1:5'–CCCAAGCTTTTAACCTAGGACGGTCAGGG-3'。
2、用限制性内切酶Nde I和Hind III双酶切步骤1的PCR扩增产物,回收酶切产物。
3、用限制性内切酶Nde I和Hind III双酶切pET-27b(+)载体,回收约5367bp 的载体骨架。
4、将步骤2的酶切产物和步骤3的载体骨架连接,得到重组质粒。根据测序结果,对重组质粒进行结构描述如下:在pET-27b(+)载体的Nde I和Hind III酶切位点之间插入了序列表的序列9~16所示的双链DNA分子。
5、将步骤4得到的重组质粒导入大肠杆菌Rosetta,得到重组菌。
6、将步骤5得到的重组菌接种至含50μg/ml卡那霉素的LB液体培养基,37℃、100r/min振荡培养至OD600nm=0.3;加入IPTG并使其浓度为0.25mmol/L,37℃、100 r/min振荡培养4h。
7、取15L完成步骤6的培养体系,4℃、4000r/min离心30min并收集菌体沉淀。
8、取步骤7得到的菌体沉淀,用PBS缓冲液重悬,加入溶菌酶溶液(购自Amresco)并使溶菌酶的浓度为1mg/ml,4℃放置1h,然后进行超声破碎(25瓦的功率,3min), 4℃、10000g离心30min,收集沉淀。
9、使用AKTA Purifier 100蛋白层析系统(购自GE公司)纯化目的蛋白
取步骤8得到的沉淀,用100毫升溶解缓冲液(8mol/L尿素水溶液,pH8.0)充分溶解,然后上样于HiLoad 16/60Superdex75 pg柱子(购自GE公司),然后用500mL 复性缓冲液(2mol/L尿素水溶液,pH8.0)洗脱并收集过柱后的洗脱液,然后在PBS 缓冲液中透析过夜,得到溶液即为8个scFv抗体溶液。所有步骤均在4℃环境下。8 种scFv抗体溶液的SDS-PAGE图谱见图1,显示约为28kD的条带,与预期相符。
实施例3、ELISA检测几种scFv抗体的亲和力和特异性
一、ELISA检测几种scFv抗体对VP2蛋白的特异性和亲和力
1、用蛋白浓度为10μg/ml的scFv抗体溶液(即实施例2制备的scFv抗体溶液,用包被液调整蛋白浓度)包被酶标板,4℃过夜,然后用PBST缓冲液洗涤3次,每次 2min。
2、每孔加入100μl蛋白浓度为40μg/ml的VP2蛋白溶液,37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
3、加入兔抗VP2多克隆抗体,37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
4、加入HRP标记的羊抗兔抗体(购自R&D system公司,工作浓度为1:8 000 倍稀释),37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
5、加入TMB底物显色液,37℃避光显色5min。
6、每孔加入50μl 2mol/L的H2SO4水溶液,用酶标仪于波长450nm下检测OD 值。
设置用等体积的PBS缓冲液代替步骤2中的VP2蛋白溶液和步骤3中的兔抗VP2 多克隆抗体的PBS组。步骤1中用蛋白浓度为10μg/ml的scFv抗体溶液包被酶标板时:设置步骤2中不加入VP2蛋白溶液的对照组1,步骤3中不加入兔抗VP2多克隆抗体的对照组2,步骤2中不加入VP2蛋白溶液且步骤3中不加入兔抗VP2多克隆抗体的对照组3,用等体积且等蛋白浓度的BSA溶液代替VP2蛋白溶液的对照组4。
每个处理设置3个复孔。
结果见图2。ELISA结果表明,8种scFv抗体均可以与VP2蛋白特异性结合,具有高亲和力。
二、ELISA检测几种scFv抗体对不同IBDV病毒的特异性和亲和力
1、用蛋白浓度为10μg/ml的scFv抗体溶液(即实施例2制备的scFv抗体溶液,用包被液调整蛋白浓度)包被酶标板,4℃过夜,然后用PBST缓冲液洗涤3次,每次 2min。
2、每孔加入100μl IBDV病毒液(病毒剂量为106.2TCID50),37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
3、加入兔抗VP2多克隆抗体,37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
4、加入HRP标记的羊抗兔抗体(购自R&D system公司,工作浓度为1:8 000 倍稀释),37℃孵育1h,然后用PBST缓冲液洗涤3次,每次2min。
5、加入TMB底物显色液,37℃避光显色5min。
6、每孔加入50μl 2mol/L的H2SO4水溶液,用酶标仪于波长450nm下检测OD 值。
分别采用如下IBDV的毒株进行上述实验:Gt株、NF8株、MB株、B87株。
设置用等体积的PBS缓冲液代替步骤2中的IBDV病毒液和步骤3中的兔抗VP2 多克隆抗体的PBS组。设置步骤2中不加入IBDV病毒液的对照组1,步骤3中不加入兔抗VP2多克隆抗体的对照组2,步骤2中不加入IBDV病毒液且步骤3中不加入兔抗 VP2多克隆抗体的对照组3,用等体积等滴度的新城疫病毒液代替IBDV病毒液的对照组4。
每个处理设置3个复孔。
结果见图3。ELISA结果表明,8种scFv抗体均可以与不同IBDV毒株特异性结合,对不同的IBDV毒株具有不同的亲和力。
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<110> 东北农业大学
<120> 几种高亲和力的抗鸡传染性法氏囊病毒的scFv抗体的制备及其应用
<160> 16
<170> SIPOSequenceListing 1.0
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<211> 248
<212> PRT
<213> 鸡(Gallus gallus)
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Gly Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Thr Met Ser Ser Tyr
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Asp Met Leu Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val
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Ala Gly Ile Asn Ala Ala Gly Ser Ser Thr Trp Tyr Ala Thr Ala Val
50 55 60
Lys Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val Arg
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Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Ala Thr Tyr Phe Cys
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Val Lys Ala Gly Gly Gly Cys Ser Gly Tyr Gly Cys Gly Ser His Ala
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Gly Arg Ile Asp Ala Trp Gly His Gly Thr Glu Val Ile Val Ser Ser
115 120 125
Ala Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly
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Ser Ala Leu Thr Gln Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr
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Val Glu Ile Thr Cys Ser Gly Asp Ser Ser Tyr Tyr Gly Trp Tyr Gln
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Gln Lys Ala Pro Gly Ser Ala Pro Val Thr Leu Ile Tyr Asp Asn Thr
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Asn Arg Pro Ser Asn Ile Pro Ser Arg Phe Ser Gly Ser Lys Ser Gly
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Ser Thr Ala Thr Leu Thr Ile Thr Gly Val Gln Ala Asp Asp Glu Ala
210 215 220
Val Tyr Tyr Cys Gly Ser Ala Asp Ser Ser Thr Ala Thr Phe Gly Ala
225 230 235 240
Gly Thr Thr Leu Thr Val Leu Gly
245
<210> 2
<211> 247
<212> PRT
<213> 鸡(Gallus gallus)
<400> 2
Ala Val Thr Leu Asp Glu Ser Gly Gly Gly Leu Gln Thr Pro Arg Gly
1 5 10 15
Ala Leu Ser Leu Val Cys Lys Gly Ser Gly Phe Thr Phe Ser Ser Tyr
20 25 30
Ala Met Asn Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val
35 40 45
Ala Gly Val Ser Gly Ser Gly Gly Ser Thr Ala Tyr Gly Ser Ala Val
50 55 60
Lys Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val Arg
65 70 75 80
Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Ala Thr Tyr Tyr Cys
85 90 95
Ala Lys Thr Ala Ser Tyr Cys Tyr Ser Ala Ala Cys Thr Ala Ala Thr
100 105 110
Ile Asp Ala Trp Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser
115 120 125
Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala
130 135 140
Leu Thr Gln Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr Val Lys
145 150 155 160
Ile Thr Cys Ser Gly Gly Gly Ser Tyr Tyr Gly Trp Tyr Gln Gln Lys
165 170 175
Ser Pro Gly Ser Ala Pro Val Thr Val Ile Tyr Asp Asn Asn Gln Arg
180 185 190
Pro Ser Asn Ile Pro Ser Arg Phe Ser Gly Ser Thr Ser Gly Ser Thr
195 200 205
Ser Thr Leu Thr Ile Thr Gly Val Gln Ala Asp Asp Glu Ala Val Tyr
210 215 220
Tyr Cys Gly Ser Tyr Asp Ser Ser Gly Asp Gly Thr Phe Gly Ala Gly
225 230 235 240
Thr Thr Leu Thr Val Leu Gly
245
<210> 3
<211> 248
<212> PRT
<213> 鸡(Gallus gallus)
<400> 3
Ala Val Thr Leu Asp Glu Pro Gly Gly Gly Leu Gln Met Pro Gly Gly
1 5 10 15
Gly Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Asp Phe Ser Ser Tyr
20 25 30
Ala Met Met Trp Val Arg Gln Ala Pro Arg Lys Gly Leu Glu Phe Val
35 40 45
Gly Tyr Val Asn Ile Asp Ser Trp Thr Ala Tyr Gly Ala Ala Val Lys
50 55 60
Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val Arg Leu
65 70 75 80
Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Ala Ile Tyr Tyr Cys Ala
85 90 95
Lys Gly Ala Tyr Asn Tyr Cys Gly Arg Asn Tyr Val Asn Thr Gly Cys
100 105 110
Ile Asp Ala Trp Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser
115 120 125
Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala
130 135 140
Leu Thr Gln Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr Val Glu
145 150 155 160
Ile Ala Cys Ser Gly Gly Ser Ser Tyr Tyr Gly Trp Phe Gln Gln Lys
165 170 175
Ala Pro Gly Ser Ala Pro Val Thr Val Ile Tyr Asp Asn Thr Asn Arg
180 185 190
Pro Ser Asp Ile Pro Ser Arg Phe Ser Gly Ser Leu Ser Gly Ser Thr
195 200 205
Asn Thr Leu Thr Ile Thr Gly Val Gln Ala Asp Asp Glu Ala Val Tyr
210 215 220
Phe Cys Gly Ser Glu Asp Ser Ser Ser Tyr Ala Gly Ile Phe Gly Ala
225 230 235 240
Gly Thr Thr Leu Thr Val Leu Gly
245
<210> 4
<211> 243
<212> PRT
<213> 鸡(Gallus gallus)
<400> 4
Ala Val Thr Leu Asp Glu Ser Gly Gly Gly Leu Gln Thr Pro Gly Gly
1 5 10 15
Ala Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Asp Phe Ser Ser Tyr
20 25 30
Ala Met Tyr Trp Val Arg Gln Ala Pro Gly Glu Gly Leu Glu Leu Val
35 40 45
Ala Gly Ile Arg Ala Asp Gly Ser Tyr Lys Ser Tyr Gly Ala Ala Val
50 55 60
Lys Gly Arg Ala Thr Ile Ser Arg Asp Asp Gly Gln Ser Thr Val Arg
65 70 75 80
Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Ala Thr Tyr Phe Cys
85 90 95
Ala Lys Ser Ala Ser Ile Tyr Cys Cys Ala Ala Asp Glu Ile Asp Thr
100 105 110
Trp Gly His Arg Thr Glu Val Ile Val Ser Ser Ala Ser Gly Gly Gly
115 120 125
Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala Leu Thr Gln
130 135 140
Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr Val Lys Ile Thr Cys
145 150 155 160
Ser Gly Asp Arg Ile Trp Tyr Gly Trp Tyr Gln Gln Lys Ala Leu Cys
165 170 175
Ser Ala Pro Val Thr Val Ile Tyr Asp Asn Thr Asn Arg Pro Ser Asn
180 185 190
Ile Pro Ser Arg Phe Ser Gly Ser Lys Ser Gly Ser Thr Ala Thr Leu
195 200 205
Thr Ile Thr Gly Val Gln Ala Asp Asp Glu Ala Val Tyr Tyr Cys Gly
210 215 220
Ser Tyr Glu Asp Arg Ser Gly Ile Phe Gly Ala Gly Thr Thr Leu Thr
225 230 235 240
Val Leu Gly
<210> 5
<211> 245
<212> PRT
<213> 鸡(Gallus gallus)
<400> 5
Ala Val Thr Leu Asp Glu Pro Gly Gly Gly Leu Gln Met Pro Gly Gly
1 5 10 15
Gly Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Thr Phe Ser Ser Asn
20 25 30
Gly Met Ala Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Phe Val
35 40 45
Ala Gly Ile Asp Ser Pro Gly Ser Tyr Thr Tyr Tyr Gly Ala Ala Val
50 55 60
Lys Gly Cys Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val Arg
65 70 75 80
Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Gly Ile Tyr Phe Cys
85 90 95
Ala Lys Gly Ala Gly Gly Trp Cys Thr Tyr Gly Cys Ala Asp Glu Ile
100 105 110
Asp Ala Trp Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser Gly
115 120 125
Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala Leu
130 135 140
Thr Gln Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr Val Lys Ile
145 150 155 160
Thr Cys Ser Gly Gly Ser Ser Ser Tyr Tyr Gly Trp Tyr Gln Gln Lys
165 170 175
Ser Pro Gly Ser Ala Pro Val Thr Leu Ile Tyr Ser Asn Asp Lys Arg
180 185 190
Pro Ser Asp Ile Pro Pro Arg Phe Ser Gly Ser Thr Ser Gly Ser Thr
195 200 205
Ala Thr Leu Thr Ile Thr Gly Val Gln Ala Asp Asp Glu Ala Val Tyr
210 215 220
Tyr Cys Gly Ser Glu Asp Ser Ser Gly Ile Phe Gly Ala Gly Thr Thr
225 230 235 240
Leu Thr Val Leu Gly
245
<210> 6
<211> 246
<212> PRT
<213> 鸡(Gallus gallus)
<400> 6
Ala Val Thr Leu Asp Glu Ser Gly Gly Gly Leu Gln Thr Pro Gly Gly
1 5 10 15
Ala Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Ser Phe Ser Ser Phe
20 25 30
Asn Met Phe Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Tyr Val
35 40 45
Ala Val Ile Ser Ser Asn Asp Gly Ser Trp Thr Ala Tyr Gly Ala Ala
50 55 60
Val Lys Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val
65 70 75 80
Arg Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Ala Thr Tyr Tyr
85 90 95
Cys Ala Lys Ala Ala Asp Pro Ser Gly Pro Ser Gly Ser Ile Asp Ala
100 105 110
Trp Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser Gly Gly Gly
115 120 125
Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala Leu Thr Gln
130 135 140
Pro Ser Ser Val Ser Ala Asn Pro Gly Glu Thr Val Lys Ile Thr Cys
145 150 155 160
Ser Gly Gly Gly Ser Ser Ser Tyr Tyr Gly Trp Tyr Gln Gln Lys Ser
165 170 175
Pro Gly Ser Ala Pro Val Thr Val Ile Tyr Tyr Asn Gly Lys Arg Pro
180 185 190
Ser Asp Ile Pro Ser Arg Phe Ser Gly Ser Lys Ser Gly Ser Thr Gly
195 200 205
Thr Leu Thr Ile Thr Gly Val Gln Ala Glu Asp Glu Ala Ile Tyr Tyr
210 215 220
Cys Gly Ser Val Asp Gly Ser Ser Thr Ala Ala Phe Gly Ala Gly Thr
225 230 235 240
Ala Leu Thr Val Leu Gly
245
<210> 7
<211> 244
<212> PRT
<213> 鸡(Gallus gallus)
<400> 7
Ala Val Thr Leu Asp Glu Ser Gly Gly Gly Leu Gln Thr Pro Gly Gly
1 5 10 15
Val Leu Ser Leu Val Cys Lys Gly Ser Gly Phe Thr Phe Ser Ser Tyr
20 25 30
Gly Met Gly Trp Met Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val
35 40 45
Ala Gly Ile Gly Ser Asp Gly Ser Asn Pro Asn Tyr Gly Ala Ala Val
50 55 60
Lys Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Ser Thr Val Arg
65 70 75 80
Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Gly Thr Tyr Tyr Cys
85 90 95
Ala Lys Arg Gly Ser Ser Asp Ser Tyr Gly Ala Ala Pro Gly Asn Ile
100 105 110
Asp Val Trp Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser Gly
115 120 125
Gly Gly Gly Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala Leu
130 135 140
Thr Gln Pro Ser Ser Val Ser Ala Asn Leu Gly Gly Thr Val Glu Ile
145 150 155 160
Thr Cys Ser Gly Asp Ser Asn Asn Tyr Gly Trp Tyr Gln Gln Lys Ala
165 170 175
Pro Gly Ser Ala Pro Val Thr Val Ile Tyr Asp Asn Thr Asn Arg Pro
180 185 190
Ser Asn Ile Pro Ser Arg Phe Ser Gly Ser Lys Ser Gly Ser Thr Ala
195 200 205
Thr Leu Thr Ile Thr Gly Val Gln Ala Glu Asp Glu Ala Val Tyr Phe
210 215 220
Cys Gly Thr Tyr Glu Asp Ser Ser Ile Phe Gly Ala Gly Thr Thr Leu
225 230 235 240
Thr Val Leu Gly
<210> 8
<211> 244
<212> PRT
<213> 鸡(Gallus gallus)
<400> 8
Ala Val Thr Leu Asp Glu Ser Gly Gly Gly Leu Gln Thr Pro Gly Gly
1 5 10 15
Ala Leu Ser Leu Val Cys Lys Ala Ser Gly Phe Thr Phe Ser Ser Tyr
20 25 30
Ala Met Asn Trp Val Arg Gln Ala Pro Gly Lys Gly Leu Glu Trp Val
35 40 45
Ala Gly Ile Arg Asn Thr Gly Arg Tyr Thr Gly Tyr Gly Ser Ala Val
50 55 60
Lys Gly Arg Ala Thr Ile Ser Arg Asp Asn Gly Gln Thr Thr Val Arg
65 70 75 80
Leu Gln Leu Asn Asn Leu Arg Ala Glu Asp Thr Gly Thr Tyr Tyr Cys
85 90 95
Thr Lys Cys Ala Gly Ile Ala Tyr Gly Ala Glu Asp Ile Asp Ala Trp
100 105 110
Gly His Gly Thr Glu Val Ile Val Ser Ser Ala Ser Gly Gly Gly Gly
115 120 125
Ser Gly Gly Gly Gly Ser Gly Gly Gly Gly Ser Ala Leu Thr Gln Pro
130 135 140
Ser Ser Val Ser Ala Asn Leu Gly Gly Thr Val Glu Ile Thr Cys Ser
145 150 155 160
Gly Gly Gly Gly Ser Tyr Gly Trp Tyr Gln Gln Lys Ser Pro Gly Ser
165 170 175
Ala Pro Val Thr Leu Ile Tyr Ala Asn Thr Asn Arg Pro Ser Asn Ile
180 185 190
Pro Ser Arg Phe Ser Gly Ser Gly Ser Gly Ser Thr Gly Thr Leu Thr
195 200 205
Ile Thr Gly Val Arg Ala Glu Asp Glu Ala Val Tyr Tyr Cys Gly Ser
210 215 220
Glu Asp Ser Ser Gly Thr Asp Ser Val Phe Gly Ala Gly Thr Thr Leu
225 230 235 240
Thr Val Leu Gly
<210> 9
<211> 747
<212> DNA
<213> 鸡(Gallus gallus)
<400> 9
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccggaggagg gctcagcctc 60
gtctgcaagg cctccgggtt caccatgagc agttatgaca tgctctgggt gcgacaggcg 120
cccggcaagg ggctggagtg ggtcgctggt attaatgctg ctggtagtag cacatggtac 180
gcgacagcgg tgaagggccg tgccaccatc tcgagggaca acgggcagag cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accgccacct acttctgcgt caaagctggt 300
ggtggttgta gtggttacgg ttgtggtagt catgctggtc ggatcgacgc atggggccac 360
gggaccgaag tcatcgtctc ctccgctagc ggtggtggtg gttctggtgg tggtggttct 420
ggtggtggtg gatccgcgct gactcagccg tcctcggtgt cagcgaaccc gggagaaacc 480
gttgagatca cctgctccgg ggatagcagc tactatggct ggtaccagca gaaggcacct 540
ggcagtgccc ctgtcactct gatctatgac aacaccaaca gaccctcgaa catcccttca 600
cgattctccg gttccaaatc cggctccaca gccacattaa ccatcactgg ggtccaagcc 660
gacgacgagg ctgtctatta ctgtgggagt gcagacagca gcactgctac atttggggcc 720
gggacaaccc tgaccgtcct aggttaa 747
<210> 10
<211> 744
<212> DNA
<213> 鸡(Gallus gallus)
<400> 10
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccagaggagc gctcagcctc 60
gtctgcaagg gctccgggtt caccttcagc agttatgcca tgaactgggt gcgacaggcg 120
cccggcaaag ggctggagtg ggtcgctggt gttagcggca gtggtggtag cacagcatac 180
gggtcggcgg tgaagggccg tgccaccatc tcgagggaca acgggcagag cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accgccacct actactgcgc caaaactgct 300
agttactgtt atagtgctgc ttgtactgct gctaccatcg acgcatgggg ccacgggacc 360
gaagtcatcg tctcctccgc tagcggtggt ggtggttctg gtggtggtgg ttctggtggt 420
ggtggatccg cgctgactca gccgtcctcg gtgtcagcga acccgggaga aaccgtcaag 480
atcacctgct ccgggggtgg cagctactat ggctggtacc agcagaagtc tcctggcagt 540
gcccctgtca ctgtgatcta tgacaacaac cagagaccct cgaacatccc ttcacgattc 600
tccggttcca catctggctc cacaagcaca ttaaccatca ctggggtcca agccgacgac 660
gaggctgtct attactgtgg gagttacgac agcagtggtg atggtacatt tggggccggg 720
acaaccctga ccgtcctagg ttaa 744
<210> 11
<211> 747
<212> DNA
<213> 鸡(Gallus gallus)
<400> 11
gccgtgacgt tggacgagcc cgggggtggc ctccagatgc ctggaggagg gctcagcctc 60
gtctgcaagg cctccgggtt cgacttcagc agttacgcca tgatgtgggt gcgacaggcg 120
ccccgcaagg ggcttgaatt cgtcggctat gttaatattg atagttggac agcatacggg 180
gcggcggtga agggccgtgc caccatctcg agggacaacg ggcagagcac ggtgaggctg 240
cagctgaaca acctcagggc tgaggacacc gccatctact actgcgccaa gggtgcttat 300
aattattgtg gtcggaatta tgtgaatact ggttgcatcg acgcatgggg ccacgggacc 360
gaagtcatcg tctcctccgc tagcggtggt ggtggttctg gtggtggtgg ttctggtggt 420
ggtggatccg cgctgactca gccgtcctcg gtgtcagcga acccgggaga aaccgttgag 480
atcgcctgct ccgggggtag cagctactat ggctggttcc agcagaaggc acctggcagt 540
gcccctgtca ctgtgatcta tgacaacacc aacagaccct cggacatccc ttcacgattc 600
tccggttccc tatccggctc cacaaacaca ttaaccatca ctggggtcca ggccgatgac 660
gaggctgtct atttctgtgg gagtgaagac agcagcagct atgctggtat atttggggcc 720
gggacaaccc tgaccgtcct aggttaa 747
<210> 12
<211> 732
<212> DNA
<213> 鸡(Gallus gallus)
<400> 12
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccggaggagc gctcagcctc 60
gtctgcaagg cctccgggtt cgacttcagc agttacgcca tgtactgggt gcgacaggcg 120
cccggcgagg ggctggagct cgtcgcgggt attagagctg atggtagtta caaaagctac 180
ggggcggcgg tgaagggccg tgccaccatc tcgagggacg acgggcagag cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accgccacct acttctgcgc caaaagtgct 300
agtatttatt gttgtgctgc tgatgagatc gacacatggg gccacaggac cgaagtcatc 360
gtctcctccg ctagcggtgg tggtggttct ggtggtggtg gttctggtgg tggtggatcc 420
gcgctgactc agccgtcctc ggtgtcagcg aacccgggag aaaccgtcaa gatcacctgc 480
tccggggata ggatctggta tggctggtat cagcagaagg cactttgcag tgcccctgtc 540
actgtgattt atgacaacac caacagaccc tcgaacatcc cttcacgatt ctccggttcc 600
aaatccggct ccacagccac attaaccatc actggggtcc aagccgacga cgaggctgtc 660
tattattgtg ggagctacga agacaggagt ggcatatttg gggccgggac aaccctgacc 720
gtcctaggtt aa 732
<210> 13
<211> 738
<212> DNA
<213> 鸡(Gallus gallus)
<400> 13
gccgtgacgt tggacgagcc cgggggcggc ctccagatgc ccggaggagg gctcagcctc 60
gtctgcaagg cctccgggtt caccttcagc agtaatggca tggcctgggt gcgacaggcg 120
cccggcaagg ggctggagtt cgtcgctggt attgatagcc ctggtagtta cacatactac 180
ggggcggcgg tgaagggctg tgccaccatc tcgagggaca acgggcagag cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accggcatct acttctgcgc caaaggtgct 300
ggtggttggt gtacttatgg ttgtgctgat gagatcgacg catggggcca cgggaccgaa 360
gtcatcgtct cctccgctag cggtggtggt ggttctggtg gtggtggttc tggtggtggt 420
ggatccgcgc tgactcagcc gtcctcggtg tcagcaaacc cgggagaaac cgtcaagatc 480
acctgctccg ggggtagcag cagctactat ggctggtacc agcagaagtc tccaggcagt 540
gcccctgtca ctctgatcta tagcaacgac aagagaccct cggacatccc tccacgattc 600
tccggttcca catccggctc cacagccaca ttaaccatca ctggggtcca agccgacgac 660
gaggctgtct attactgtgg gagtgaagac agcagtggca tatttggggc cgggacaacc 720
ctgaccgtcc taggttaa 738
<210> 14
<211> 741
<212> DNA
<213> 鸡(Gallus gallus)
<400> 14
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccggaggagc gctcagcctc 60
gtctgcaagg cctccgggtt ctccttcagc agcttcaaca tgttctgggt gcgacaggct 120
cccggcaagg ggctggaata tgtcgcagtt attagcagca atgatggtag ttggacagca 180
tacggggcgg cggtgaaggg ccgtgccacc atctcgaggg acaacgggca gagcacagtg 240
aggctgcagc tgaacaacct cagggctgag gacaccgcca cctactactg cgccaaagct 300
gctgatccta gtggtccttc tggtagcatc gacgcatggg gccacgggac cgaagtcatc 360
gtctcctccg ctagcggtgg tggtggttct ggtggtggtg gttctggtgg tggtggatcc 420
gcgctgactc agccgtcctc ggtgtcagca aacccaggag aaaccgtcaa gatcacctgc 480
tccgggggtg gtagcagcag ctactatggc tggtaccagc agaagtctcc tggcagtgcc 540
cctgtcactg tgatctatta taacggcaag agaccctcgg acatcccttc acgattctcc 600
ggttccaaat ccggctccac gggcacatta accatcactg gggtccaagc cgaggacgag 660
gctatctatt actgtgggag tgtagacggc agcagtactg ctgcatttgg ggccgggaca 720
gccctgaccg tcctaggtta a 741
<210> 15
<211> 735
<212> DNA
<213> 鸡(Gallus gallus)
<400> 15
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccggaggagt gctcagcctc 60
gtctgcaagg gctccgggtt caccttcagc agttacggca tgggttggat gcgccaggca 120
cccggcaagg ggctggagtg ggtcgctggt attggaagtg atggtagtaa cccaaactac 180
ggggcagcgg tgaagggccg tgccaccatc tcgagggaca acgggcagag cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accggcacct actactgcgc caaacgtggt 300
tccagtgata gttatggtgc tgctcctggt aacatcgacg tatggggcca cgggaccgaa 360
gtcatcgtct cctccgctag cggtggtggt ggttctggtg gtggtggttc tggtggtggt 420
ggatccgcgc tgactcagcc gtcctcggtg tcagcaaacc tgggaggaac cgtcgagatc 480
acctgctccg gggatagcaa caactatggc tggtaccagc agaaggcacc tggcagtgcc 540
cctgtcactg tgatctatga caacaccaac agaccctcga acatcccttc acgattctcc 600
ggttccaaat ccggctccac agccacatta accatcactg gggtccaagc cgaggacgag 660
gctgtctatt tctgtgggac ctacgaagac agcagtatat ttggggccgg gacaaccctg 720
accgtcctag gttaa 735
<210> 16
<211> 735
<212> DNA
<213> 鸡(Gallus gallus)
<400> 16
gccgtgacgt tggacgagtc cgggggcggc ctccagacgc ccggaggagc gctcagcctc 60
gtctgcaagg cctctgggtt caccttcagc agttacgcca tgaactgggt gcgacaggcg 120
cccggcaagg ggctggagtg ggtcgcaggt attcgcaaca ctggtagata cacaggctac 180
gggtcggcgg tgaagggccg tgccaccatc tcgagggaca acgggcagac cacagtgagg 240
ctgcagctga acaacctcag ggctgaggac accggcacct actactgcac gaaatgtgct 300
ggtattgctt acggtgctga agatatcgac gcatggggcc acgggaccga agtcatcgtc 360
tcctccgcta gcggtggtgg tggttctggt ggtggtggtt ctggtggtgg tggatccgcg 420
ctgactcagc cgtcctcggt gtcagcaaac ctgggaggaa ccgtcgagat cacctgctcc 480
gggggtggtg gcagctacgg ctggtatcag cagaagtcac ctggcagtgc ccctgtcact 540
ctgatctatg ctaacaccaa cagaccctca aacatccctt cacgattctc cggttctgga 600
tccggctcca caggcacatt aaccatcact ggggtccgag ccgaggacga ggctgtctat 660
tactgtggga gtgaagacag cagcggtact gatagtgtat ttggggccgg gacaaccctg 720
accgtcctag gttaa 735

Claims (6)

1.几种单链抗体(scFv抗体),单链抗体包括由重链可变区、轻链可变区以及它们之间的连接区组成;
所述scFv-11为如下(a):(a)由序列表中序列1自N末端第1-248位氨基酸残基组成的蛋白质;
所述scFv-12为如下(b):(b)由序列表中序列2自N末端第1-247位氨基酸残基组成的蛋白质;
所述scFv-13为如下(c):(c)由序列表中序列3自N末端第1-248位氨基酸残基组成的蛋白质;
所述scFv-14为如下(d):(d)由序列表中序列4自N末端第1-243位氨基酸残基组成的蛋白质;
所述scFv-15为如下(e):(e)由序列表中序列5自N末端第1-245位氨基酸残基组成的蛋白质;
所述scFv-16为如下(f):(f)由序列表中序列6自N末端第1-246位氨基酸残基组成的蛋白质;
所述scFv-17为如下(g):(g)由序列表中序列7自N末端第1-244位氨基酸残基组成的蛋白质;
所述scFv-18为如下(h):(h)由序列表中序列8自N末端第1-244位氨基酸残基组成的蛋白质。
2.编码权利要求1所述单链抗体的基因。
3.如权利要求2所述的基因,其特征在于:
所述基因中,编码所述scFv-11的DNA分子为如下(1):(1)序列表的序列9自5’末端第1-747位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-12的DNA分子为如下(2):(2)序列表的序列10自5’末端第1-744位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-13的DNA分子为如下(3):(3)序列表的序列11自5’末端第1-747位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-14的DNA分子为如下(4):(4)序列表的序列12自5’末端第1-732位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-15的DNA分子为如下(5):(5)序列表的序列13自5’末端第1-738位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-16的DNA分子为如下(6):(6)序列表的序列14自5’末端第1-741位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-17的DNA分子为如下(7):(7)序列表的序列15自5’末端第1-735位核苷酸所示的DNA分子;
所述基因中,编码所述scFv-18的DNA分子为如下(8):(8)序列表的序列16自5’末端第1-735位核苷酸所示的DNA分子。
4.含有权利要求2至3中任一所述基因的表达盒、重组载体、转基因细胞系或重组菌。
5.基于权利要求1所述单链抗体的突变体和/或1个和/或几个氨基酸残基替换的其它形式的具有相同功能的抗体。
6.权利要求1-5所述的单链抗体在制备产品中的应用;所述产品的功能为如下(Ⅰ)和/或(Ⅱ)和/或(Ⅲ)和/或(Ⅳ):(Ⅰ)检测鸡传染性法氏囊病病毒;(Ⅱ)辅助鉴定鸡传染性法氏囊病病毒;(Ⅲ)预防和/或治疗鸡传染性法氏囊病;(Ⅳ)预防和/或治疗由鸡传染性法氏囊病病毒诱发的疾病。
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