Immunological characterization of abnormal prion protein from atypical scrapie cases in sheep using a panel of monoclonal antibodies

被引:39
|
作者
Gretzschel, Anja
Buschmann, Anne
Langeveld, Jan
Groschup, Martin H.
机构
[1] Friedrich Loeffler Inst, Inst Novel & Emerging Infect Dis, D-17493 Greifswald, Germany
[2] Cent Inst Anim Dis Control, NL-8203 AA Lelystad, Netherlands
来源
JOURNAL OF GENERAL VIROLOGY | 2006年 / 87卷
关键词
BOVINE SPONGIFORM ENCEPHALOPATHY; BSE; PRP; VARIANT; ACCUMULATION; REPLICATION; GENERATION; DIAGNOSIS; GENOTYPE; FEATURES;
D O I
10.1099/vir.0.81816-0
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
After the implementation of an active surveillance programme for scrapie in sheep in the EU, the number of diagnosed classical scrapie cases rose sharply and a novel kind of so-called atypical scrapie case was discovered. These atypical scrapie cases display unusual features concerning the distribution of the abnormal prion protein (PrPSc) in the brain, a distinct electrophoretic profile of PrPSc and an inconsistent reaction pattern in the currently used rapid tests. In this report, PrPSc of two German atypical sheep scrapie cases was characterized by epitope mapping using a panel of 18 monoclonal antibodies that were directed against epitopes located throughout the prion protein. This analysis suggests that PrPSc derived from atypical scrapie cases and treated with proteinase K is largely composed of an 11 kDa fragment (previously referred to as the 12 kDa band) and of polymeric fragments thereof. The 11 kDa band corresponds to a prion protein fragment spanning approximately aa 90-153 and may therefore represent a novel PrPSc type.
引用
收藏
页码:3715 / 3722
页数:8
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