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Characteristics of 263K Scrapie Agent in Multiple Hamster Species

机译:多种仓鼠种类中263K刮rap剂的特性

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Transmissible spongiform encephalopathy (TSE) dis-eases are known to cross species barriers, but the patho-logic and biochemical changes that occur during transmis-sion are not well understood. To better understand these changes, we infected 6 hamster species with 263K hamster scrapie strain and, after each of 3 successive passages in the new species, analyzed abnormal proteinase K (PK)–resistant prion protein (PrPres) glycoform ratios, PrPres PK sensitivity, incubation periods, and lesion profi les. Unique 263K molecular and biochemical profi les evolved in each of the infected hamster species. Characteristics of 263K in the new hamster species seemed to correlate best with host factors rather than agent strain. Furthermore, 2 poly-morphic regions of the prion protein amino acid sequence correlated with profi le differences in these TSE-infected hamster species
机译:已知传播性海绵状脑病(TSE)会越过物种壁垒,但人们对传播过程中发生的病理学和生化变化知之甚少。为了更好地了解这些变化,我们用263K仓鼠瘙痒病菌株感染了6个仓鼠物种,并在新物种连续3次传代后,分别分析了蛋白酶K(PK)-抗pr病毒蛋白(PrPres)糖型比率异常,PrPres PK敏感性,潜伏期和病变情况。在每种受感染的仓鼠物种中均进化出独特的263K分子和生化特征。新仓鼠物种中263K的特征似乎与宿主因素而不是病原菌菌株之间的相关性最佳。此外,the病毒蛋白氨基酸序列的2个多态性区域与这些被TSE感染的仓鼠物种的特征差异相关

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