大黄鱼病原哈维氏弧菌单克隆抗体的制备及其应用
PREPARATION AND APPLICATIONS OF MONOCLONAL ANTIBODY AGAINST THE PATHOGENIC HARVEYI FROM PSEUDOSCIAENA CROCEA
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摘要: 用甲醛灭活哈维氏弧菌(Vibrio harveyi)GYC1108-1制备免疫原免疫8周龄雌性BALB/c小鼠,利用淋巴细胞杂交瘤技术,用间接酶联免疫吸附试验(ELISA)对杂交瘤进行筛选,阳性克隆经2-3次亚克隆后,共获得5株针对GYC1108-1的单克隆抗体。选取1B7制备小鼠腹水抗体,其细胞上清及腹水效价分别为1∶3200和1∶32000。同样用灭活的哈维氏弧菌免疫新西兰大白兔,5次免疫后颈动脉采血,离心取血清,并用饱和硫酸铵法进行纯化,制备了兔抗哈维氏弧菌多克隆抗体,其ELISA效价为1∶51200。利用1B7单克隆抗体和兔抗哈维氏弧菌多克隆抗体以及山羊抗小鼠HRP酶标二抗,建立了检测哈维氏弧菌的三抗体夹心酶联免疫吸附试验(TAS-ELISA)方法。该方法对哈维氏弧菌的最小检出浓度为1×104个/mL。用该TAS-ELISA方法检测大黄鱼(Pseudosciaena crocea)样品,54尾患病大黄鱼中有45尾检出哈维氏弧菌,而14尾健康大黄鱼都没有检出哈维氏弧菌。由此可见,本试验建立的TAS-ELISA方法,可以用于患病大黄鱼哈维氏弧菌的快速诊断。
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关键词:
- 大黄鱼 /
- 哈维氏弧菌 /
- 单克隆抗体 /
- 三抗体夹心酶联免疫吸附试验
Abstract: Vibrio harveyi is a kind of important pathogenic bacteria for seawater animals, such as prawn, crab, calm and ormer. Along with the development of seawater fish cage-culture in China, Vibrio harveyi also becomes a main cause of disease of cage-culture fish, including Lutianus erythopterus, Seriola dumerili, Epinephelus coioides and Pseudosciaena cro-cea. One pathogenic V. harveyi strain, GYC1108-1, which was isolated from diseased Pseudosciaena crocea in Zhejiang Province, 2003, was identified after morphological observation, biochemical characteristic analysis, 16sRNA and HSP60 gene sequence detection.-
Keywords:
- Pseudosciaena crocea /
- Vibrio harveyi /
- Monoclonal antibody /
- TAS-ELISA
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