CN110540584B - 镰形扇头蜱网格蛋白重链分子及其应用 - Google Patents

镰形扇头蜱网格蛋白重链分子及其应用 Download PDF

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CN110540584B
CN110540584B CN201810527718.4A CN201810527718A CN110540584B CN 110540584 B CN110540584 B CN 110540584B CN 201810527718 A CN201810527718 A CN 201810527718A CN 110540584 B CN110540584 B CN 110540584B
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周金林
王方方
旷策嫣
龚海燕
张厚双
曹杰
周勇志
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Shanghai Veteromaru Research Institute Caas China Animal Health And Epidemiology Center Shanghan Branch Center
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Abstract

本发明公开了一种镰形扇头蜱网格蛋白重链分子,具有SEQ ID NO.1所示的氨基酸序列。本发明还公开了镰形扇头蜱网格蛋白重链分子基因,包含编码SEQ ID NO.1所示氨基酸序列的核苷酸序列。本发明的镰形扇头蜱网格蛋白重链分子及其基因,经基因沉默或敲除后,能明显降低蜱的上体率,显著影响蜱的吸血,使蜱的死亡率达到100%,有望成为抗蜱疫苗和蜱传病防治的候选分子,具有广阔的应用前景。

Description

镰形扇头蜱网格蛋白重链分子及其应用
技术领域
本发明涉及生物工程技术领域,尤其涉及一种镰形扇头蜱网格蛋白重链分子及其应用。
背景技术
蜱是一类专门寄生于脊椎动物体表的非永久性寄生虫,是世界上仅次于蚊子的第二大传播媒介。蜱叮咬宿主并将病原体传播给宿主,对宿主造成伤害,严重阻碍了畜牧业的发展,造成了很大的经济损失。蜱还可传播各种病原体给人类,如莱姆病、出血热和新型布里亚病毒病等,造成全身感染,严重者会因多器官功能衰竭而造成人的死亡。然而现阶段预防蜱叮咬的方法比较局限,主要是化学药物驱蜱,不能从根本上解决蜱及蜱传病,而且容易产生耐药性,因此亟需找到新方法杀蜱,如疫苗或者双链RNA等生物杀虫剂。
蜱叮咬宿主并吸血,直到饱血后从宿主体表脱落下来,蜱的营养供给来自于宿主的血液,以满足蜱卵巢组织的发育成熟,进而繁殖后代。因此,营养物质如卵黄蛋白原进入卵细胞需要卵黄蛋白原受体的介导,可能还需要由卵细胞内网格蛋白依赖型内吞途径所产生的细胞信号转导级联反应,将卵黄蛋白原运输到卵细胞内,说明网格蛋白在营养物质入胞过程中发挥着重要作用。另外,病原体的入胞过程需要网格蛋白介导的内吞途径,那么蜱体内的网格蛋白重链(CHC)在蜱传病原体的传播过程中是否也发挥着重要作用?有文献报道,蜱可通过卵黄蛋白原受体垂直传播巴贝斯虫。卵黄蛋白原受体不仅可以激活胞内网格蛋白依赖型内吞途径,以维持组织器官发育中细胞间的信号转导,包括营养物质的吸收,细胞生长和分化以及免疫反应等,而且还有助于病原体入侵并感染宿主细胞。一直以来,网格蛋白介导的内吞途径在果蝇等其它物种中的研究较为广泛,而网格蛋白重链(CHC)基因在蜱中的研究还没有文献报道。
发明内容
本发明要解决的技术问题是提供一种镰形扇头蜱网格蛋白重链分子及其基因,该镰形扇头蜱网格蛋白重链分子可以作为抗蜱疫苗和蜱传病防治的候选分子。
为了解决上述技术问题,本发明通过如下技术方案实现:
在本发明的一个方面,提供了一种镰形扇头蜱网格蛋白重链分子,具有SEQ IDNO.1所示的氨基酸序列。
在本发明的另一方面,提供了一种镰形扇头蜱网格蛋白重链分子基因,其包含:编码SEQ ID NO.1所示氨基酸序列的核苷酸序列。
优选的,所述镰形扇头蜱网格蛋白重链分子基因的核苷酸序列如SEQ ID NO.2所示。
在本发明的另一方面,还提供了一种重组载体,包含上述镰形扇头蜱网格蛋白重链分子基因的核苷酸序列。
所述重组载体包括重组克隆载体或重组表达载体。
在本发明的另一方面,还提供了一种包含上述重组载体的宿主细胞。
在本发明的另一方面,还提供了一种抑制上述镰形扇头蜱网格蛋白重链分子活性的物质,该物质包括各种蛋白活性抑制剂等。
在本发明的另一方面,还提供了一种抑制上述镰形扇头蜱网格蛋白重链分子基因表达的物质。所述物质包括:抑制上述镰形扇头蜱网格蛋白重链分子基因表达的dsRNA。
优选的,所述dsRNA为SEQ ID NO.20所示的核苷酸序列和其反向互补序列组成的双链RNA。
在本发明的另一方面,还提供了一种抗蜱疫苗,包含上述镰形扇头蜱网格蛋白重链分子或其部分活性片段。
在本发明的另一方面,还提供了一种产品,包含抑制镰形扇头蜱网格蛋白重链分子活性或抑制镰形扇头蜱网格蛋白重链分子基因表达的物质,其具有下述(1)-(3)中任一种功能:(1)防治蜱传病;(2)防控蜱的叮咬;(3)抑制雌蜱产卵。
在本发明的另一方面,还提供了一种上述镰形扇头蜱网格蛋白重链分子或镰形扇头蜱网格蛋白重链分子基因的应用,用于制备防治蜱传病的生物杀虫剂。
在本发明的另一方面,还提供了一种上述抑制镰形扇头蜱网格蛋白重链分子活性或抑制镰形扇头蜱网格蛋白重链分子基因表达的物质的应用,用于制备防治蜱传病的生物杀虫剂。
本发明的镰形扇头蜱网格蛋白重链分子CHC,由RNA干扰实验证明,CHC基因沉默或敲除,能明显降低蜱的上体率,显著影响蜱的吸血,使蜱的死亡率达到100%,CHC基因有望成为抗蜱疫苗和蜱传病防治的候选分子,具有广阔的应用前景。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1是本发明实施例1的镰形扇头蜱网格蛋白重链基因序列分析图;
图2是本发明实施例2的镰形扇头蜱网格蛋白重链基因的表达分布图;
图3是本发明实施例3的镰形扇头蜱网格蛋白重链基因干扰后对蜱生物学特性的影响结果图。
具体实施方式
为寻找到抗蜱疫苗或者蜱传病防治的候选分子,本发明首次从镰形扇头蜱中获得网格蛋白重链分子CHC基因,通过对镰形扇头蜱CHC基因的克隆、表达分布及其对蜱吸血等生物学特性的影响进行实验,结果表明,CHC基因沉默或敲除后,能显著降低蜱的上体和蜱的体积大小,使蜱的饱血率低至4.55%,死亡率高达100%,说明本发明的CHC基因适于作为抗蜱疫苗和蜱传病防治的候选分子。
实施例1镰形扇头蜱网格蛋白重链分子(CHC)的基因克隆和序列分析
1.材料与方法
1.1.蜱与实验动物
镰形扇头蜱(采自湖北武汉,后经本实验室繁殖传代),主要是将蜱接种到新西兰大白兔耳朵上,让其吸血,待饱血后自行脱落,并在温度为25℃,相对湿度为95%的生化培养箱中培养蜕皮成下一个发育阶段,并保存。
1.2.细菌与质粒
质粒构建用到的是大肠杆菌Top 10细胞(TIANGEN)。克隆测序载体用到的是pMD-19T Easy(Takara)。
1.3.镰形扇头蜱不同吸血阶段以及不同组织器官材料的收集
为进一步研究镰形扇头蜱网格蛋白重链基因的表达特征,收集卵、未吸血状态下的幼蜱、若蜱和成蜱,以及半饱血状态下的幼蜱、若蜱和成蜱,并解剖了未吸血和半饱血状态下的成蜱,获得卵巢、唾液腺、脂肪体和中肠组织。解剖方法如下:
将雌蜱用胶粘在平皿上,背部朝上,固定好之后将蜱泡在1×PBS缓冲液中。在光学显微镜或者体视显微镜下,用手术刀将蜱的腹部与背部分开,脂肪体存在于背壳上,用弯镊子将脂肪体刮下,再用镊子和细针将唾液腺、肠道和卵巢分开,清洗干净后被放于含有Trizol液体的EP管中用于总RNA提取。
1.4.总RNA的提取及第一链cDNA的合成
用TRIzol reagent(Invitrogen)提取镰形扇头蜱不同吸血阶段以及不同组织器官的总RNA,首先将总RNA经过DNaseⅠ(TAKARA)消化,以去除其中的基因组DNA。通过反转录酶将总RNA合成第一链cDNA,进行后续的基因扩增和荧光定量PCR,整个步骤按照反转录试剂盒Reverse Transcription System Kit with gDNA eraser(perfect real time,Takara,Dalian,China)说明书进行操作。
1.5.网格蛋白重链的分子克隆
网格蛋白重链开放阅读框的扩增以镰形扇头蜱半饱血或者饱血成蜱的卵巢cDNA为模板,将序列分为两个片段设计引物,引物如下:
Chc F1:5’-ATGACGCAGATACTACCGATACGCT-3’(SEQ ID NO.3);
Chc R1:5’-CATTGCACACCTGGACAAGCTCT-3’(SEQ ID NO.4);
Chc F2:5’-TAGACTCCAACAACAACCCCGAG-3’(SEQ ID NO.5);
Chc R2:5’-CATGCTGTAGCCTTGGTAGCCTG-3’(SEQ ID NO.6);
纯化后的PCR扩增产物连接到克隆载体pMD-19 T Easy(Takara)中进行测序;最后再以上述两个扩增片段的质粒为模板,使用引物Chc F1和Chc R2,将网格蛋白重链的开放阅读框扩增出来,纯化后的PCR扩增产物连接到克隆载体pMD-19 T Easy(Takara)中进行测序。
2.结果
从镰形扇头蜱雌蜱卵巢的mRNA中,获得了基因CHC的开放阅读框5013bp(SEQ IDNO.2),编码1670个氨基酸(SEQ ID NO.1)。预测的蛋白分子量为190.8kDa,等电点为5.52。预测其信号肽序列,发现CHC基因无信号肽。将CHC基因预测的氨基酸序列进行BLAST非冗余数据库分析,结果显示预测蛋白与其他物种的CHC具有一定的相似度。CHC的氨基酸序列与肩突硬蜱(Ixodes scapularis)CHC(XP_002406240.1)相似性为89.83%,与中国黑腹果蝇(Drosophila melanogaster)CHC(NP_477042.1)的相似性为81.77%,与埃及伊蚊(Aedesaegypti)CHC(XP_021710115.1)的相似性为83.14%,与人(Homo sapiens)CHC(NP_009029.3)的相似性为77.43%(见图1A所示的进化树)。而且活性预测发现,网格蛋白重链基因有五个网格蛋白螺旋桨重复域,一个网格蛋白重链连接器,一个网格蛋白连接域和七个网格蛋白重链重复结构域,网格蛋白重链重复结构域分别是537-679氨基酸,686-828氨基酸,833-972氨基酸,979-1124氨基酸,1128-1269氨基酸,1274-1420氨基酸和1423-1582氨基酸,这些区域是网格蛋白和滤泡分拣蛋白域,每个大约有140个氨基酸,是由多个α螺旋组成(见图1B所示的网格蛋白重链基因结构域示意图)。
实施例2 RT-qPCR检测镰形扇头蜱网格蛋白重链CHC基因的动态分布
根据网格蛋白重链基因的ORF序列设计荧光定量PCR的引物,引物序列如下:
CHC-qRTPCR-F:5'-CTACGAGTGCTTTGGTGCCT-3'(SEQ ID NO.7);
CHC-qRTPCR-R:5'-GTGATGTATTCCCGCATGACCT-3'(SEQ ID NO.8)。
根据内参基因的全长序列设计引物如下:
ELFⅠA-QRT-PCR-F:5’-CGTCTACAAGATTGGTGGCATT-3’(SEQ ID NO.9);
ELFⅠA-QRT-PCR-R:5’-CTCAGTGGTCAGGTTGGCAG-3’(SEQ ID NO.10)。
荧光定量PCR的反应体系按照试剂盒说明书进行操作,以镰形扇头蜱不同材料反转录获得的cDNA为模板,进行两步法实时定量PCR法分析。根据Takara操作说明,ABI7500Real-time PCR系统,采用的两步法PCR扩增标准程序为:95℃预变性30s;95℃变性5s,60℃退火34s,共40个循环,随后添加上溶解曲线。
结果:为了检测CHC基因的表达分布情况,使用RT-qPCR方法检测CHC基因在镰形扇头蜱的不同发育阶段和半饱血状态下的不同组织器官中的转录水平。结果发现,CHC基因分布比较广泛,而且吸血可以促进CHC基因在幼蜱和若蜱的转录水平(图2A),在半饱血状态下的成蜱中,CHC基因主要在卵巢和中肠中高表达(图2B),说明CHC基因可能与营养物质的入胞吸收有一定的关系。图2中,A为在不同发育阶段的表达分布图;B为在半饱血状态下的不同组织器官中的表达分布图。
实施例3镰形扇头蜱网格蛋白重链dsRNA的合成及RNA干扰
以CHC-pMD-19 T easy质粒(RNAi序列长度在830bp左右)为模板,以CHC RNAi-1F、CHC RNAi-1R、CHC RNAi-2F、CHC RNAi-2R为引物(斜体加粗部分为T7启动子序列),PCR扩增含有T7启动子序列的网格蛋白重链序列,然后对PCR产物进行胶回收纯化。其中,RNAi以luciferase基因RNAi(RNAi序列在600bp左右)作为对照组。随后,以上述PCR扩增获得的含T7启动子序列的网格蛋白重链序列为模板(SEQ ID NO.19所示的DNA序列),利用T7RiboMAXTMExpress RNAi System(Promega)试剂盒,体外转录生成网格蛋白重链的双链RNA(dsRNA),该双链RNA由正义链和反义链组成,其正义链的核苷酸序列如SEQ ID NO.20所示,其反义链的核苷酸序列为SEQ ID NO.20的反向互补序列。
CHC RNAi-1F:5’-TAATACGACTCACTATAGGCAGATAGTGGACGTGTTCATGG-3’(SEQ IDNO.11);
CHC RNAi-1R:5’-TCGGCACAGTCCACATCCA-3’(SEQ ID NO.12);
CHC RNAi-2F:5’-CAGATAGTGGACGTGTTCATGG-3’(SEQ ID NO.13);
CHC RNAi-2R:5’-TAATACGACTCACTATAGGTCGGCACAGTCCACATCCA-3’(SEQ IDNO.14)。
Luciferase
RNAi-1F:5’-GGATCCTAATACGACTCACTATAGGGCTTCCATCTTCCAGGGATAC-3’(SEQ IDNO.15);
Luciferase RNAi-1R:5’-CGTCCACAAACACAACTCCTCC-3’(SEQ ID NO.16);
Luciferase RNAi-2F:5’-GCTTCCATCTTCCAGGGATACG-3’(SEQ ID NO.17);
Luciferase
RNAi-2R:5’-GGATCCTAATACGACTCACTATAGGCGTCCACAAACACAACTCCTC-3’(SEQ IDNO.18)。
选择同一批未吸血状态下的镰形扇头蜱成蜱(雌蜱和雄蜱),分为实验组和对照组,实验组雌蜱注射CHC基因的dsRNA,对照组雌蜱注射Luciferase基因的dsRNA。在光学显微镜下找到蜱的第4肢基节部位,将CHC基因和luciferase基因dsRNA分别显微注射到蜱体内,雄蜱不作任何处理;注射后的蜱在25℃,95%相对湿度的生化培养箱中放置24h,观察蜱的生活状态及死亡率。第二天,将实验组的雌雄蜱接种在兔子的一只耳朵上,对照组接种在该兔子的另一只耳朵上,并观察蜱的24h上体率、死亡率、饱血重量、饱血率和产卵率等,以判断CHC基因沉默后对蜱的生物学特征的影响。
结果:CHC基因沉默或敲除后,显著降低了蜱的上体和蜱的体积大小(图3A);CHC基因干扰组只有两只蜱达到饱血状态,且饱血体重低于对照组(图3B);CHC基因干扰组的饱血率低至4.55%,死亡率高达100%(图3C)。图3中,A为上体率图;B为饱血体重图;C为对其它生物学特性的影响图。
以上结果说明CHC基因沉默或敲除后显著影响蜱的吸血,CHC基因可以作为抗蜱疫苗和蜱传病防治的候选分子。
以上所述实施例仅表达了本发明的实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
序列表
<110>中国农业科学院上海兽医研究所(中国动物卫生与流行病学中心上海分中心)
<120> 镰形扇头蜱网格蛋白重链分子及其应用
<160> 20
<170> PatentIn version 3.3
<210> 1
<211> 1670
<212> PRT
<213> 镰形扇头蜱(Rhipicephalus haemaphysaloide)
<400> 1
Met Thr Gln Ile Leu Pro Ile Arg Phe Gln Glu His Leu Gln Leu Thr
1 5 10 15
Asn Ile Gly Ile Asn Ala Ala Asn Val Gly Phe Asn Thr Leu Thr Met
20 25 30
Glu Ser Asp Lys Phe Ile Cys Val Arg Glu Lys Val Gly Asp Ala Ala
35 40 45
Gln Val Val Ile Val Asp Met Ala Asn Pro Thr Asn Pro Ile Arg Arg
50 55 60
Pro Ile Ser Ala Asp Ser Ala Ile Met Asn Pro Ala Ser Arg Val Ile
65 70 75 80
Ala Leu Lys Ala Ser Arg Thr Leu Gln Ile Phe Asn Ile Glu Met Lys
85 90 95
Ser Lys Val Lys Ala His Thr Met Thr Glu Asp Val Val Phe Trp Lys
100 105 110
Trp Ile Asn Val Asn Thr Ile Ala Leu Val Thr Glu Gly Ala Val Tyr
115 120 125
His Trp Ser Met Glu Gly Asp Ser Gln Pro Gln Lys Met Phe Asp Arg
130 135 140
His Ser Ser Leu Ser Gly Cys Gln Ile Ile Asn Tyr Arg Thr Asp Ala
145 150 155 160
Lys Ile Gln Trp Leu Leu Leu Ile Gly Ile Ser Ala Gln Gln Asn Arg
165 170 175
Val Ala Gly Ala Met Gln Leu Tyr Ser Met Glu Arg Lys Val Ser Gln
180 185 190
Pro Ile Glu Gly His Ala Ala Ala Phe Ala Gln Phe Lys Gln Glu Gly
195 200 205
Asn Thr Glu Ala Ser Thr Leu Phe Cys Phe Ala Val Arg Thr Pro His
210 215 220
Gly Gly Lys Leu His Ile Ile Glu Val Gly Gln Pro Ala Pro Gly Asn
225 230 235 240
Gln Ala Tyr Pro Lys Lys Ala Val Asp Val Phe Phe Pro Pro Glu Ala
245 250 255
Gln Asn Asp Phe Pro Val Ala Met Gln Met Ser Pro Lys His Asp Val
260 265 270
Val Phe Leu Ile Thr Lys Tyr Gly Tyr Val His Leu Tyr Asp Leu Glu
275 280 285
Thr Gly Thr Cys Ile Tyr Met Asn Arg Ile Ser Ala Asp Thr Ile Phe
290 295 300
Val Thr Ala Pro His Glu Ala Thr Ser Gly Ile Ile Gly Val Asn Arg
305 310 315 320
Lys Gly Gln Val Leu Ser Val Ser Val Glu Glu Glu Asn Ile Ile Pro
325 330 335
Tyr Ile Thr Asn Val Leu Gln Asn Pro Asp Leu Ala Leu Arg Met Ala
340 345 350
Val Arg Asn Asn Leu Ser Gly Ala Glu Asp Leu Phe Val Val Arg Phe
355 360 365
Asn Thr Leu Phe Ser Ser Gly Gln Tyr Ser Glu Ala Ala Lys Val Ala
370 375 380
Ala Asn Ala Pro Arg Gly Val Leu Arg Thr Pro Gln Thr Ile Gln Arg
385 390 395 400
Phe Gln Gln Val Pro Asn Gln Pro Gly Gln Thr Ser Pro Leu Leu Gln
405 410 415
Tyr Phe Gly Ile Leu Leu Asp Gln Gly Gln Leu Asn Lys Tyr Glu Ser
420 425 430
Leu Glu Leu Cys Arg Pro Val Leu Gln Gln Gly Arg Lys Gln Leu Leu
435 440 445
Glu Lys Trp Leu Lys Asp Asp Lys Leu Glu Cys Ser Glu Glu Leu Gly
450 455 460
Asp Leu Val Lys Gln Val Asp Pro Thr Leu Ala Leu Ser Val Tyr Leu
465 470 475 480
Arg Ala Asn Val Pro Ala Lys Val Ile Gln Cys Phe Ala Glu Thr Gly
485 490 495
Gln Phe Gln Lys Ile Val Leu Tyr Ala Lys Lys Val Gly Tyr Thr Pro
500 505 510
Asp Tyr Val Leu Leu Leu Arg Gln Val Met Arg Leu Ser Pro Asp Gln
515 520 525
Gly Thr Ala Phe Ala Gln Met Leu Val Gln Asp Glu Glu Pro Leu Ala
530 535 540
Asp Ile Asn Gln Ile Val Asp Val Phe Met Glu Ser Asn Leu Val Gln
545 550 555 560
Gln Cys Thr Ala Phe Leu Leu Asp Ala Leu Lys Asn Asn Arg Pro Ser
565 570 575
Glu Ser His Leu Gln Thr Arg Leu Leu Glu Met Asn Leu Met Thr Ala
580 585 590
Pro Gln Val Ala Asp Ala Ile Leu Gly Asn Gln Met Phe Thr His Tyr
595 600 605
Asp Arg Ala His Val Ala Gln Leu Cys Glu Lys Ala Gly Leu Leu Gln
610 615 620
Arg Ala Leu Glu His Tyr Thr Asp Leu Tyr Asp Ile Lys Arg Ala Ile
625 630 635 640
Val His Thr His Leu Leu Asn Ala Glu Trp Leu Val Asn Tyr Phe Gly
645 650 655
Ser Leu Ser Val Glu Asp Ser Leu Glu Cys Leu Arg Ala Met Leu Thr
660 665 670
His Asn Leu Arg Gln Asn Leu Gln Ile Cys Val Gln Val Ala Thr Lys
675 680 685
Tyr His Glu Gln Leu Thr Thr Thr Ala Leu Ile Asp Leu Phe Glu Ser
690 695 700
Phe Lys Ser Tyr Glu Gly Leu Phe Tyr Phe Leu Gly Ser Ile Val Asn
705 710 715 720
Phe Ser Gln Asp Pro Glu Val His Phe Lys Tyr Ile Gln Ala Ala Cys
725 730 735
Lys Thr Gly Gln Ile Lys Glu Val Glu Arg Ile Cys Arg Glu Ser Asn
740 745 750
Cys Tyr Asn Ala Glu Arg Val Lys Asn Phe Leu Lys Glu Ala Lys Leu
755 760 765
Thr Asp Gln Leu Pro Leu Ile Ile Val Cys Asp Arg Phe Asp Phe Val
770 775 780
His Asp Leu Val Leu Tyr Leu Tyr Arg Asn Ser Leu Gln Lys Tyr Ile
785 790 795 800
Glu Ile Tyr Val Gln Lys Val Asn Pro Ser Arg Leu Pro Val Val Val
805 810 815
Gly Gly Leu Leu Asp Val Asp Cys Ala Glu Glu Val Ile Lys Asn Leu
820 825 830
Ile Leu Val Val Arg Gly Gln Phe Ser Thr Asp Glu Leu Val Ala Glu
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Val Glu Lys Arg Asn Arg Leu Lys Leu Leu Leu Pro Trp Leu Glu Gly
850 855 860
Arg Leu His Glu Gly Cys Gln Glu Pro Ala Thr His Asn Ala Leu Ala
865 870 875 880
Lys Ile Tyr Ile Asp Ser Asn Asn Asn Pro Glu Arg Phe Leu Arg Glu
885 890 895
Asn Pro Phe Tyr Asp Ser Thr Val Val Gly Arg Tyr Cys Glu Lys Arg
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Asp Pro His Leu Ala Cys Ile Ala Tyr Glu Arg Gly Gln Cys Asp Arg
915 920 925
Glu Leu Val Gln Val Cys Asn Glu Asn Ser Leu Phe Lys Ser Glu Ala
930 935 940
Arg Tyr Leu Val Arg Arg Arg Asp Pro Asp Leu Trp Ala Glu Val Leu
945 950 955 960
Ala Glu Ser Asn Pro Phe Arg Arg Pro Leu Ile Asp Gln Val Val Gln
965 970 975
Thr Ala Leu Ser Glu Thr Gln Asp Pro Glu Asp Ile Ser Val Thr Val
980 985 990
Lys Ala Phe Met Thr Ala Asp Leu Pro Asn Glu Leu Ile Glu Leu Leu
995 1000 1005
Glu Lys Ile Val Leu Glu Asn Ser Val Phe Ser Asp His Arg Asn
1010 1015 1020
Leu Gln Asn Leu Leu Ile Leu Thr Ala Ile Lys Ala Asp Arg Ser
1025 1030 1035
Arg Val Met Glu Tyr Ile Asn Arg Leu Asp Asn Tyr Asp Ala Pro
1040 1045 1050
Asp Ile Ala Asn Ile Ala Ile Gly Ser Glu Leu Tyr Glu Glu Ala
1055 1060 1065
Phe Ala Ile Phe Arg Lys Phe Asp Val Asn Thr Ser Ala Ile Gln
1070 1075 1080
Val Leu Ile Glu His Ile Gln Asn Leu Asp Arg Ala Tyr Glu Phe
1085 1090 1095
Ala Glu Arg Cys Asn Glu Pro Gly Val Trp Ser Gln Leu Ala Arg
1100 1105 1110
Ala Gln Leu Ser Gln Gly Met Val Lys Glu Ala Ile Asp Ser Phe
1115 1120 1125
Ile Lys Ala Gly Asp His Thr Ala Tyr Leu Asp Val Val Gln Thr
1130 1135 1140
Ala His Lys Thr Gly Ser Trp Glu Asp Leu Val Arg Tyr Leu Gln
1145 1150 1155
Met Ala Arg Lys Lys Gly Arg Glu Ser Tyr Val Glu Ser Glu Leu
1160 1165 1170
Ile Tyr Ala Tyr Ala Lys Thr Asn Arg Leu Ala Asp Leu Glu Glu
1175 1180 1185
Phe Val Ser Gly Pro Asn His Ala Asp Val Gln Arg Ile Gly Asp
1190 1195 1200
Arg Cys Phe Glu Asp Gly Leu Tyr Glu Pro Ala Lys Leu Leu Tyr
1205 1210 1215
Asn Asn Val Ser Asn Phe Ala Arg Leu Ala Ile Thr Leu Val His
1220 1225 1230
Leu Lys Glu Phe Gln Gly Ala Val Asp Ser Ala Arg Lys Ala Asn
1235 1240 1245
Ser Thr Arg Thr Trp Lys Glu Val Cys Phe Ala Cys Val Asp Ser
1250 1255 1260
Glu Glu Phe Arg Leu Ala Gln Met Cys Gly Leu His Ile Val Val
1265 1270 1275
His Ala Asp Glu Leu Glu Asp Leu Ile Asn Tyr Tyr Gln Asp Arg
1280 1285 1290
Gly Tyr Phe Glu Glu Leu Ile Ser Leu Leu Glu Ala Ala Leu Gly
1295 1300 1305
Leu Glu Arg Ala His Met Gly Met Phe Thr Glu Leu Ala Ile Leu
1310 1315 1320
Tyr Ser Lys Tyr Lys Pro Gly Lys Met Arg Glu His Leu Glu Leu
1325 1330 1335
Phe Trp Ser Arg Val Asn Ile Pro Lys Val Leu Arg Ala Ala Glu
1340 1345 1350
Gln Ala His Leu Trp Ala Glu Leu Val Phe Leu Tyr Asp Lys Tyr
1355 1360 1365
Glu Glu Phe Asp Asn Ala Val Val Thr Met Met Gln His Pro Thr
1370 1375 1380
Glu Ala Trp Arg Glu Ala His Phe Lys Glu Ile Ile Thr Lys Val
1385 1390 1395
Ala Asn Ile Glu Leu Tyr Tyr Arg Ala Val Gln Phe Tyr Leu Asp
1400 1405 1410
His Lys Pro Met Leu Leu Asn Asp Leu Leu Leu Val Leu Ala Pro
1415 1420 1425
Arg Met Asp His Thr Arg Ala Val Gly His Phe Ser Arg Val Gly
1430 1435 1440
His Leu Pro Leu Val Lys Pro Tyr Leu Arg Ser Val Gln Ser Leu
1445 1450 1455
Asn Asn Lys Ala Val Asn Glu Ala Leu Asn Gly Leu Leu Ile Glu
1460 1465 1470
Glu Glu Asp Phe Gln Gly Leu Arg Thr Ser Ile Asp Ala Phe Asp
1475 1480 1485
Asn Phe Asp Asn Ile Ala Leu Ala Gln Arg Leu Glu Arg His Asp
1490 1495 1500
Leu Val Glu Phe Arg Arg Leu Ala Ala Tyr Leu Tyr Lys Gly Asn
1505 1510 1515
Asn Arg Trp Lys Gln Ser Val Glu Leu Cys Lys Lys Asp Arg Leu
1520 1525 1530
Phe Arg Asp Ala Met Glu Tyr Ala Ala Glu Ser Lys Asn Ala Glu
1535 1540 1545
Thr Ala Glu Glu Leu Leu Ser Trp Phe Leu Asp Glu Lys Asn Tyr
1550 1555 1560
Glu Cys Phe Gly Ala Cys Leu Phe Gln Cys Tyr Asp Leu Leu His
1565 1570 1575
Pro Asp Val Ile Leu Glu Leu Ala Trp Lys His Asn Ile Met Asp
1580 1585 1590
Phe Ala Met Pro Tyr Phe Val Gln Val Met Arg Glu Tyr Ile Thr
1595 1600 1605
Lys Val Asp Lys Leu Glu Glu Asn Glu Asn Gln Arg Leu Glu Glu
1610 1615 1620
Ser Ala Gln Asn Glu Gln Lys Pro Leu Val Tyr Ala Pro Glu Pro
1625 1630 1635
Gln Leu Met Leu Thr Ala Pro Pro Gly Met Leu Gly Ala Pro Gly
1640 1645 1650
Tyr Ala Pro Pro Tyr Gly Ala Pro Met Pro Gly Tyr Gln Gly Tyr
1655 1660 1665
Ser Met
1670
<210> 2
<211> 5013
<212> DNA
<213> 镰形扇头蜱(Rhipicephalus haemaphysaloide)
<400> 2
atgacgcaga tactaccgat acgcttccaa gagcacttac agctcaccaa catagggatc 60
aatgcagcca acgtgggttt caacacactc accatggagt cggacaagtt catctgcgtc 120
cgagagaaag tcggggacgc tgcacaggtg gttattgtgg acatggccaa cccgaccaac 180
cccatccggc ggcccatctc ggccgactcg gccatcatga accccgcctc gcgagtcatc 240
gccctcaagg cgtcgcgcac cctgcagatc ttcaacattg agatgaagag caaagtgaag 300
gcgcacacca tgacggagga cgtggtcttc tggaagtgga tcaacgtcaa cacgatcgct 360
ctggtcacag agggggccgt ctaccactgg agcatggagg gggactccca accgcagaag 420
atgttcgacc gccactccag cctcagcggc tgccagatca tcaactaccg gactgacgcc 480
aagatccagt ggctgctcct gatcggcatc tcggcccagc agaaccgggt ggccggggcc 540
atgcagctct actcgatgga gcgtaaagtg agtcagccca tcgagggcca cgccgccgcc 600
tttgcccagt tcaagcagga gggcaacaca gaggcctcga cgctcttctg ctttgccgtg 660
cggacgccgc acggtggcaa gctgcacata atcgaggtgg gccagcccgc gcccggcaac 720
caggcgtatc cgaagaaggc ggtggatgtg ttcttcccgc ccgaggcaca gaacgacttc 780
ccggtggcca tgcagatgag ccccaagcac gacgtggtgt tcctcatcac gaaatacggc 840
tacgtgcact tgtacgacct ggagactggc acctgtatct acatgaaccg tatctcggcc 900
gacactattt tcgttaccgc gccccacgag gccacttcgg gcatcatcgg agtcaaccgc 960
aagggacagg tcctgtcagt gagtgtggaa gaagagaaca tcatcccgta catcacaaac 1020
gtcctccaga acccagacct ggcactgcgc atggcagtgc gtaacaacct gtcgggtgcc 1080
gaggacctct ttgttgtgcg cttcaacaca ctgttcagca gcggccagta ctctgaggcg 1140
gccaaggtgg cggccaacgc cccgcgcggg gtcctgcgca cgccgcagac gatccagcgc 1200
ttccagcagg tgcccaacca gccgggccag acatcgccgc tgctgcagta ctttggcatc 1260
ctgctggacc aaggccagct gaacaagtac gagtccctgg agctgtgtcg gcccgtgctg 1320
cagcagggcc gcaagcagct gctcgagaag tggctcaagg atgacaagct cgagtgcagc 1380
gaagagctcg gtgacctcgt gaagcaggtg gacccgacgc tggcactgtc cgtctacctg 1440
cgtgccaacg tgcccgccaa ggtgattcag tgctttgccg agacgggcca gttccagaag 1500
attgtgctgt acgccaagaa ggtgggctac acgcccgact acgtgctgct gctgcgtcag 1560
gtgatgcggc tcagccccga ccagggcact gcctttgccc agatgctggt gcaggacgag 1620
gagcccctgg ccgacataaa ccagatagtg gacgtgttca tggagtccaa cttagtccag 1680
cagtgcacgg cattcctgct ggatgccctg aagaacaacc gaccctctga aagccacctc 1740
cagacgagac tgctggagat gaacctgatg acggcgccgc aggtggccga tgccatcctg 1800
ggcaaccaga tgttcaccca ctacgaccgt gcccacgtgg cacagctctg tgagaaggcg 1860
ggcctcctcc agcgggccct ggaacactac accgacctgt acgacataaa gcgggccatc 1920
gtgcacaccc acctcctgaa cgctgagtgg ctggtgaact actttggctc gctgtcagtg 1980
gaggactccc tggagtgcct gcgggccatg ctgacacaca acctgcgaca gaacctgcag 2040
atttgcgtgc aggtggccac caagtaccac gagcagctga cgactacggc tctcatcgac 2100
cttttcgagt cgttcaagag ctacgagggc ctcttctact tcctcggctc cattgtgaac 2160
ttcagccagg acccggaggt gcacttcaag tacatccagg ccgcctgcaa gacggggcag 2220
atcaaggagg tggagcgtat ctgccgagag agcaactgct acaatgctga gcgagtcaag 2280
aacttcctca aggaggccaa gctgactgac cagctgccgc tgatcatcgt atgtgaccgc 2340
ttcgacttcg tccacgacct tgtactctac ctgtaccgaa actccctgca gaagtacatc 2400
gagatctacg tccaaaaggt gaacccttca cgtctgcccg tggtggtggg cggtctgctg 2460
gatgtggact gtgccgagga ggtgatcaag aacctcatcc tggtggtgcg tggccagttt 2520
tcgactgacg agctggtggc cgaggtggag aagcgcaacc ggctcaagct gctgctgccc 2580
tggctcgagg ggcggctgca cgagggctgc caggagccgg ccacccacaa tgccctggcc 2640
aagatctaca tagactccaa caacaacccc gagcggttcc tgcgcgagaa tcctttctac 2700
gacagcactg ttgtgggccg gtactgcgag aagcgcgacc cccatctggc ctgcatcgcc 2760
tacgagcggg gacagtgtga ccgagagctt gtccaggtgt gcaatgagaa ctcgctcttc 2820
aagagcgagg ctcgctacct ggttcggcgg cgagatccgg acctctgggc ggaggttctg 2880
gcagagagca atccgttccg gcgccccctc atcgaccagg tggtccagac ggccctctcg 2940
gagacacagg accccgagga catctcggtg acagtcaagg cattcatgac ggctgacctg 3000
cccaatgagc tgattgagct gctcgagaag attgtgttgg agaactcagt tttctcggac 3060
caccgcaacc tgcagaacct gctcattttg actgccatca aggcggaccg ctcgcgtgtc 3120
atggagtaca tcaaccgact ggacaactac gatgcccccg acattgccaa cattgccatt 3180
ggcagtgaac tctacgagga ggcctttgcc atcttccgca agttcgacgt caacacgtca 3240
gccattcagg tgctgattga gcacatccag aacctggacc gggcgtacga gtttgccgag 3300
cggtgcaacg agcccggtgt ctggagccag ctggcccgtg cccagctgag ccaaggcatg 3360
gtcaaggagg ccatcgactc gttcatcaag gcgggcgacc acaccgccta cctggacgtg 3420
gtgcagactg cccacaagac gggctcgtgg gaggacctgg tgcggtacct gcagatggcg 3480
cgcaagaagg ggcgggagtc gtacgtcgag tctgagctga tctatgcata cgccaagacc 3540
aaccgtctgg ccgacctgga ggagtttgtg tcgggcccca accacgcgga cgtgcagcgc 3600
atcggcgacc gttgcttcga ggacggcctg tacgagccgg ccaagctcct gtacaacaac 3660
gtgtccaact ttgcccgcct ggccatcacc ttggtgcacc tgaaggagtt ccagggtgcc 3720
gtggactcgg cgcgcaaggc caactcgacg cgcacctgga aggaggtgtg ctttgcatgc 3780
gtggacagcg aggagtttcg gctggctcag atgtgcggcc tgcacattgt ggtgcacgcc 3840
gacgagctcg aggacctcat caactactac caggacaggg gttacttcga ggagctcatc 3900
tctctgctgg aggccgctct ggggctggaa cgtgcccaca tgggcatgtt caccgagctg 3960
gccatcctct actccaagta caagcccggc aagatgcgcg agcacctcga gctcttctgg 4020
tcgcgcgtca acattcccaa ggtgctgcga gccgccgagc aggcgcacct gtgggccgaa 4080
ctggtgttcc tctacgacaa gtacgaggag tttgacaatg ctgtggtcac catgatgcag 4140
cacccgacgg aagcctggcg ggaggcacac ttcaaggaaa tcatcaccaa ggttgcgaac 4200
atcgagctct actatcgggc tgtgcaattt tacctggacc acaaaccaat gctgctgaac 4260
gacctgctgc tggtgctggc cccccgcatg gaccacacgc gtgccgtggg ccacttcagt 4320
cgagtggggc acttgcccct ggtcaagccg tacctgcgct cggtgcagag cctcaacaac 4380
aaggctgtca acgaggccct caacggcctg ctgatcgagg aggaggactt ccagggtctg 4440
cgcacctcca tcgacgcctt cgacaacttc gacaacattg ccctggcaca gcggctggag 4500
cggcacgacc tggtggagtt cagacgcctg gccgcttatc tgtacaaggg caataaccgc 4560
tggaagcagt cggtggaact gtgcaagaag gatcgcctgt tccgggacgc gatggagtat 4620
gcggcagagt ccaagaatgc cgagacggcc gaggagctgc tgagttggtt cctggacgag 4680
aagaactacg agtgctttgg tgcctgtctg ttccagtgct acgacctgct gcaccccgac 4740
gtcatcctcg agcttgcatg gaagcacaac atcatggact ttgctatgcc ctactttgtg 4800
caggtcatgc gggaatacat caccaaggtt gacaagctag aagagaacga gaaccagagg 4860
ctggaagaat ctgcacagaa tgaacagaag ccccttgtct acgccccgga gccccagcta 4920
atgttgacag caccaccagg catgttgggt gcaccaggct acgcacctcc ctatggggca 4980
cccatgccag gctaccaagg ctacagcatg tag 5013
<210> 3
<211> 25
<212> DNA
<213> 人工序列(Artificial)
<400> 3
atgacgcaga tactaccgat acgct 25
<210> 4
<211> 23
<212> DNA
<213> 人工序列(Artificial)
<400> 4
cattgcacac ctggacaagc tct 23
<210> 5
<211> 23
<212> DNA
<213> 人工序列(Artificial)
<400> 5
tagactccaa caacaacccc gag 23
<210> 6
<211> 23
<212> DNA
<213> 人工序列(Artificial)
<400> 6
catgctgtag ccttggtagc ctg 23
<210> 7
<211> 20
<212> DNA
<213> 人工序列(Artificial)
<400> 7
ctacgagtgc tttggtgcct 20
<210> 8
<211> 22
<212> DNA
<213> 人工序列(Artificial)
<400> 8
gtgatgtatt cccgcatgac ct 22
<210> 9
<211> 22
<212> DNA
<213> 人工序列(Artificial)
<400> 9
cgtctacaag attggtggca tt 22
<210> 10
<211> 20
<212> DNA
<213> 人工序列(Artificial)
<400> 10
ctcagtggtc aggttggcag 20
<210> 11
<211> 41
<212> DNA
<213> 人工序列(Artificial)
<400> 11
taatacgact cactataggc agatagtgga cgtgttcatg g 41
<210> 12
<211> 19
<212> DNA
<213> 人工序列(Artificial)
<400> 12
tcggcacagt ccacatcca 19
<210> 13
<211> 22
<212> DNA
<213> 人工序列(Artificial)
<400> 13
cagatagtgg acgtgttcat gg 22
<210> 14
<211> 38
<212> DNA
<213> 人工序列(Artificial)
<400> 14
taatacgact cactataggt cggcacagtc cacatcca 38
<210> 15
<211> 46
<212> DNA
<213> 人工序列(Artificial)
<400> 15
ggatcctaat acgactcact atagggcttc catcttccag ggatac 46
<210> 16
<211> 22
<212> DNA
<213> 人工序列(Artificial)
<400> 16
cgtccacaaa cacaactcct cc 22
<210> 17
<211> 22
<212> DNA
<213> 人工序列(Artificial)
<400> 17
gcttccatct tccagggata cg 22
<210> 18
<211> 46
<212> DNA
<213> 人工序列(Artificial)
<400> 18
ggatcctaat acgactcact ataggcgtcc acaaacacaa ctcctc 46
<210> 19
<211> 836
<212> DNA
<213> 人工序列(Artificial)
<400> 19
cagatagtgg acgtgttcat ggagtccaac ttagtccagc agtgcacggc attcctgctg 60
gatgccctga agaacaaccg accctctgaa agccacctcc agacgagact gctggagatg 120
aacctgatga cggcgccgca ggtggccgat gccatcctgg gcaaccagat gttcacccac 180
tacgaccgtg cccacgtggc acagctctgt gagaaggcgg gcctcctcca gcgggccctg 240
gaacactaca ccgacctgta cgacataaag cgggccatcg tgcacaccca cctcctgaac 300
gctgagtggc tggtgaacta ctttggctcg ctgtcagtgg aggactccct ggagtgcctg 360
cgggccatgc tgacacacaa cctgcgacag aacctgcaga tttgcgtgca ggtggccacc 420
aagtaccacg agcagctgac gactacggct ctcatcgacc ttttcgagtc gttcaagagc 480
tacgagggcc tcttctactt cctcggctcc attgtgaact tcagccagga cccggaggtg 540
cacttcaagt acatccaggc cgcctgcaag acggggcaga tcaaggaggt ggagcgtatc 600
tgccgagaga gcaactgcta caatgctgag cgagtcaaga acttcctcaa ggaggccaag 660
ctgactgacc agctgccgct gatcatcgta tgtgaccgct tcgacttcgt ccacgacctt 720
gtactctacc tgtaccgaaa ctccctgcag aagtacatcg agatctacgt ccaaaaggtg 780
aacccttcac gtctgcccgt ggtggtgggc ggtctgctgg atgtggactg tgccga 836
<210> 20
<211> 836
<212> RNA
<213> 人工序列(Artificial)
<400> 20
cagauagugg acguguucau ggaguccaac uuaguccagc agugcacggc auuccugcug 60
gaugcccuga agaacaaccg acccucugaa agccaccucc agacgagacu gcuggagaug 120
aaccugauga cggcgccgca gguggccgau gccauccugg gcaaccagau guucacccac 180
uacgaccgug cccacguggc acagcucugu gagaaggcgg gccuccucca gcgggcccug 240
gaacacuaca ccgaccugua cgacauaaag cgggccaucg ugcacaccca ccuccugaac 300
gcugaguggc uggugaacua cuuuggcucg cugucagugg aggacucccu ggagugccug 360
cgggccaugc ugacacacaa ccugcgacag aaccugcaga uuugcgugca gguggccacc 420
aaguaccacg agcagcugac gacuacggcu cucaucgacc uuuucgaguc guucaagagc 480
uacgagggcc ucuucuacuu ccucggcucc auugugaacu ucagccagga cccggaggug 540
cacuucaagu acauccaggc cgccugcaag acggggcaga ucaaggaggu ggagcguauc 600
ugccgagaga gcaacugcua caaugcugag cgagucaaga acuuccucaa ggaggccaag 660
cugacugacc agcugccgcu gaucaucgua ugugaccgcu ucgacuucgu ccacgaccuu 720
guacucuacc uguaccgaaa cucccugcag aaguacaucg agaucuacgu ccaaaaggug 780
aacccuucac gucugcccgu gguggugggc ggucugcugg auguggacug ugccga 836

Claims (8)

1.一种镰形扇头蜱网格蛋白重链分子,其氨基酸序列如SEQ ID NO.1所示。
2.一种镰形扇头蜱网格蛋白重链分子基因,其基因序列为编码SEQ ID NO.1所示氨基酸序列的核苷酸序列。
3.根据权利要求2所述的镰形扇头蜱网格蛋白重链分子基因,其特征在于,所述镰形扇头蜱网格蛋白重链分子基因的核苷酸序列如SEQ ID NO.2所示。
4.抑制权利要求2所述镰形扇头蜱网格蛋白重链分子基因表达的物质,所述物质包括:抑制权利要求2所述镰形扇头蜱网格蛋白重链分子基因表达的dsRNA。
5.根据权利要求4所述的物质,其特征在于,所述dsRNA为SEQ ID NO.20所示的核苷酸序列和其反向互补序列组成的双链RNA。
6.一种抗蜱疫苗,包含权利要求1所述的镰形扇头蜱网格蛋白重链分子。
7.一种产品,包含权利要求4或5所述的物质,其具有下述(1)-(3)中任一种功能:
(1)防治蜱传病;
(2)防控蜱的叮咬;
(3)抑制雌蜱产卵。
8.权利要求1所述镰形扇头蜱网格蛋白重链分子或权利要求2所述镰形扇头蜱网格蛋白重链分子基因或权利要求4或5所述物质的应用,用于制备防治蜱传病的生物杀虫剂。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1657617A (zh) * 2004-02-18 2005-08-24 中国农业科学院上海家畜寄生虫病研究所 镰形扇头蜱RhcA和RhcB基因的克隆、表达和抗蜱免疫保护作用
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