乙腦病毒和西尼羅病毒單克隆抗體的制備及鑒定
[Abstract]:Japanese Encephalitis virus (Japancse encephlitic virus,JEV) and West Nile virus (West Nile Virus, WNV) are both members of (Japanese Encephalitis Virus Serocomplex Group), which belong to the Genus Flavor virus, Genus Flavor virus and Japanese Encephalitis virus Antigen complex group. This composite group of members of the virus is a mosquito-borne virus, mainly carried by birds, transmitted by mosquitoes to humans, but also can infect other mammals, causing a variety of clinical symptoms, including fever, and even encephalitis and meningitis, serious people can die. In recent years, the West Nile virus epidemic among the members of the group has caused serious damage and threat to human health. West Nile fever has been classified as a new infectious disease in foreign countries, and the Ministry of Health of our country has classified West Nile fever as a new infectious disease which may be introduced into China. Early detection and prevention of WNV transmission are the main measures to control the outbreak of West Nile fever. Detection of WNV infection rate in mosquitoes is an intuitive indicator for early warning of West Nile virus transmission. From the personnel and equipment requirements, the rapid immune detection method has obvious advantages. Yellow virus is a positive-stranded RNA virus. Taking West Nile virus as an example, it consists of 10962 nucleotides, and its open reading frame encodes three structural proteins and seven non-structural proteins of the virus. The envelope protein (E) and membrane protein (M) are the main structural proteins of the virus, which may be related to the virulence and invasiveness of the virus, and are also the main antigens of the virus. However, because there are many common antigenic epitopes on the surface of the virus, especially on the E protein, there are many common antigenic epitopes among the members of the genus flavivirus, so it is easy to appear cross-reaction in serological detection, which makes the reaction result less specific. It has been reported that monoclonal antibodies against the precursor prM protein of dengue virus M protein did not cross-react with Japanese encephalitis virus antiserum, suggesting that there may be virus specific epitopes on the prM protein. In order to explore an efficient and sensitive method for the detection of WNV, JEV and WNVprM genes were cloned and expressed in E. coli to prepare specific monoclonal antibodies against JEV and WNVprM proteins, respectively, for identification of the infection of JEV complex group members. Differential diagnosis and epidemiological study. Firstly, monoclonal antibodies were prepared by immunizing BALB/c mice with JEV vaccine strain. After five subclones screening, hybridoma cell line V6B9 secreting monoclonal antibody against JEV vaccine strain V6B9 was obtained. The antibody subtype was IgG1, antibody titer of 10? The results of Western Blot and immunohistochemistry showed that the monoclonal antibody could react with the virus in the supernatant of the brain infected with JEV and with WNV. The antibody can be used in JEV complex group.
【學(xué)位授予單位】:第二軍醫(yī)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2006
【分類號】:R392
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