发布: 2016年12月05日第6卷第23期 DOI: 10.21769/BioProtoc.2040 浏览次数: 9995
评审: Yannick DebingLongping Victor TseAnonymous reviewer(s)

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利用小鼠Phospho-RTK Array试剂盒无偏筛选肿瘤提取物中激活受体酪氨酸激酶
Julian Naipauer [...] Enrique A. Mesri
2019年04月20日 5131 阅读
Abstract
Dengue is a global public health threat caused by infection with any of the 4 related dengue virus serotypes (DENV1-4). Clinical manifestations range from self-limiting febrile illness, known as dengue fever (DF), to life-threatening severe diseases, such as dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS). Most cases of DHF/DSS are associated with secondary heterotypic infections through a phenomenon that is described as antibody-dependent enhancement of infection (ADE). There are an estimated 400 million human infections and several hundred thousand cases of severe dengue occurring yearly. At present, however, there are no approved antiviral drugs against DENV infection. The lack of a suitable animal model has hampered the evaluation of novel antiviral candidates for DENV infection. Since DENV poorly establishes infection in immunocompetent mice, AG129 mice (lacking type I and II IFN [interferon] receptors) and mouse-adapted DENV2 strains have been applied to dengue animal models that enable to reproduce several of the major pathologies of human infection. Recently, we developed new mouse models with clinical isolates DENV1 and DENV2 that would be useful for drug testing and dengue pathogenesis studies (Watanabe et al., 2016). Here we describe the details to establish dengue mouse models of clinical isolates; from in vitro preparation of the materials to in vivo virus infection. Of note, since infectivity of DENV in mice differs among virus strains, not all clinical isolates can induce severe dengue.
Keywords: Dengue virus (登革热病毒)Background
To overcome the drawback that DENV does not replicate well in rodent cells, many efforts have been made over the years to develop small animal models that mimic human dengue infection. The inbred mouse model system allows experimental variability to be minimized, and genetically engineered mouse models enable to reproduce some aspects of dengue clinical symptoms in the animals. A past study showed that AG129 mice (lacking type I and II IFN receptors) infected with a DENV2 clinical isolate succumbed to infection with signs of paralysis, a condition of central nervous system involvement that is rare in human cases (Shresta et al., 2004). Alternatively, mouse-adapted DENV2 strains that can induce human DHF/DSS-like diseases in AG129 mice were generated and have been used for dengue research (Shresta et al., 2006; Zellweger et al., 2010). Although the use of the mouse-adapted strains is valuable for some aspects of DENV pathogenesis studies and potential therapeutic drug testing, one considerable limitation is the variable pathogenesis depending on the serotype/genotype, and adaptation of virus in mouse might alter tissue tropism. Recently, we developed new mouse models of clinical isolates DENV1 and DENV2; the mice succumbed to infection with signs of severe dengue symptoms (Watanabe et al., 2016). Non-lethal infection with clinical isolates becomes lethal accompanied with high levels of viremia and cytokine production in the presence of DENV antibodies (Abs) (ADE condition) in AG129 mice, suggesting that this system enables to extend the use of clinical DENV isolates for the study of Ab-mediated DENV pathogenesis and the evaluation of anti-dengue candidates.
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文章信息
版权信息
© 2016 The Authors; exclusive licensee Bio-protocol LLC.
如何引用
Watanabe, S., Chan, K. W. K. and Vasudevan, S. G. (2016). Mouse Model of Dengue Virus Infection with Serotypes 1 and 2 Clinical Isolates. Bio-protocol 6(23): e2040. DOI: 10.21769/BioProtoc.2040.
分类
微生物学 > 体内实验模型 > 病毒
细胞生物学 > 组织分析 > 组织分离
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