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GENETIC STUDIES OF ROTAVIRUS PATHOGENESIS

GENETIC STUDIES OF ROTAVIRUS PATHOGENESIS
轮状病毒发病机制的遗传学研究
批准号:
2566748
负责人:
Y HOSHINO
金额:
$0.0万
依托单位国家:
美国
项目类别:
财政年份:
--
资助国家:
美国
项目状态:
未结题
起止时间:
至

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中文摘要
翻译
以前,在涉及半同源系统的研究中, 新生猪和强毒株猪轮状病毒株(SB-1A)和 人轮状病毒弱毒株DS-1及其保护株, 证明:(i)第三(VP 3),第四(VP 4),第九(VP 7),或 猪轮状病毒第十(NSP 4)基因各自独立发挥重要作用 在仔猪轮状病毒感染的毒力中的作用;和(ii)所有 猪轮状病毒毒力相关基因中的四个是 诱导仔猪腹泻和排出轮状病毒。这些 观察结果表明,一种潜在的新的战略, 具有重要流行病学意义的野生型人轮状病毒及其 用于开发安全有效的疫苗。 使用这种策略,我们成功地产生了四个人类x牛 轮状病毒抑制剂,其各自具有:(i)VP-4编码基因 来自人轮状病毒Wa(VP 4:1A)的VP 7编码基因; 轮状病毒D(VP 7:1)、DS-1(VP 7:3)或ST 3(VP 7:4);和(iii)所述 其余9个基因,包括VP 3编码基因和NSP 4编码基因, 来自牛轮状病毒UK的基因。 此外,我们还成功地生成了 两种人x牛轮状病毒抑制剂,每种都具有 来自人轮状病毒Wa(VP 4:1A)或DS-1(VP 4:1B)的VP 4编码基因和 牛轮状病毒UK的剩余基因。 此外,我们有 产生了另外两种人x恒河猴轮状病毒抑制剂, 其具有来自人轮状病毒Wa(VP 4:1A)或DS-1的VP 4编码基因, (VP4:1B)、来自人轮状病毒DS-1(VP 7:2)的VP 7编码基因和来自人轮状病毒DS-1(VP 7:2)的VP 7编码基因。 其余9个基因来自恒河猴轮状病毒,MMU 18006。 最近,我们 已经产生了另外的人x恒河猴轮状病毒抑制剂, 具有来自恒河猴轮状病毒的10个基因和来自人轮状病毒的VP 7基因 P(VP 7:3)。 这些菌株可能被证明对开发 一种最有效的轮状病毒疫苗。
英文摘要
Previously, in studies involving a semi-homologous system of gnotobiotic newborn pigs and a virulent porcine rotavirus strain (SB-1A) and an avirulent human rotavirus strain (DS-1) and their reassortants, we demonstrated that: (i) the third (VP3), fourth (VP4), ninth (VP7), or tenth (NSP4) porcine rotavirus gene each play an important independent role in the virulence of rotavirus infection in piglets; and (ii) all four of the porcine rotavirus virulence-associated genes are required for the induction of diarrhea and the shedding of rotavirus by piglets. These observations suggested a potential new strategy for attenuation of wild-type human rotaviruses of major epidemiologic importance and its application to the development of a safe and effective vaccine. Using this strategy, we were successful in generating four human x bovine rotavirus reassortants, each of which has: (i) the VP-4 encoding gene from human rotavirus Wa (VP4:1A); (ii) VP7-encoding gene from human rotavirus D (VP7:1), DS-1 (VP7:3), or ST3 (VP7:4); and (iii) the remaining nine genes including the VP3-encoding gene and NSP4-encoding gene from bovine rotavirus UK. In addition, we successfully generated two human x bovine rotavirus reassortants, each of which had the VP4-encoding gene from human rotavirus Wa (VP4:1A) or DS-1 (VP4:1B) and the remaining genes from bovine rotavirus UK. Furthermore, we have generated two additional human x rhesus rotavirus reassortants, each of which has the VP4-encoding gene from human rotavirus Wa (VP4:1A) or DS-1 (VP4:1B), the VP7-encoding gene from human rotavirus DS-1 (VP7:2) and the remaining nine genes from rhesus rotavirus, MMU18006. More recently, we have generated an additional human x rhesus rotavirus reassortant which has ten genes from rhesus rotavirus and the VP7 gene from human rotavirus P (VP7:3). Such strains may prove to be useful for the development of an optimally effective rotavirus vaccine.
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CHARACTERIZATION OF ROTAVIRUSES FROM ASYMPTOMATIC HUMAN NEONATAL INFECTIONS
ISOLATION AND SEROTYPIC CHARACTERIZATION OF HUMAN AND ANIMAL ROTAVIRUSES
GENETIC STUDIES OF ROTAVIRUS PATHOGENESIS
COLD-ADAPATION OF HUMAN ROTAVIRUSES
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