title: Defining sporadic Creutzfeldt-Jakob disease strains and their transmission properties.
abstract: The biological determinants of the phenotypic variation in sporadic Creutzfeldt-Jakob disease (sCJD) are unknown. To categorize sCJD cases, the prion protein (PrP) codon 129 genotype and the biochemical characteristics of the disease-associated form of PrP (PrP(Sc)) can be combined to form six subgroups (MM1, MM2, MV1, MV2, VV1, and VV2). This classification largely correlates with the known variation in the clinical and pathological features of sCJD, with the MM1 and MV1 cases representing the "classic" phenotype of sCJD. To address how this classification relates to different strains of sCJD we have inoculated each subgroup of sCJD to a panel of mice expressing different forms of the human PRNP gene (129MM, 129VV, and 129MV). We have established that all subtypes are transmissible to at least one genotype of mouse, and both agent and host factors determine transmission efficiency and the form of PrP(Sc) deposited in the brain. Moreover, we have identified four distinct strains of sCJD using our in vivo strain typing panel.
authors.affiliation: National Creutzfeldt-Jakob Disease Surveillance Unit, Western General Hospital, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom.
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Bishop
authors.forename: Robert G
authors.initials: RG
authors.lastname: Will
authors.forename: Jean C
authors.initials: JC
authors.lastname: Manson
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism / Q000473:pathology; D003062:Codon / Q000235:genetics; D007562:Creutzfeldt-Jakob Syndrome / Q000235:genetics* / Q000378:metabolism / Q000473:pathology / Q000635:transmission*; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007150:Immunohistochemistry; D051379:Mice; D008822:Mice, Transgenic; D010641:Phenotype; D018620:PrPSc Proteins / Q000145:classification* / Q000235:genetics* / Q000378:metabolism / Q000472:pathogenicity; D011994:Recombinant Proteins / Q000145:classification / Q000235:genetics / Q000378:metabolism; D014617:Vacuoles / Q000473:pathology
chemical_list: D003062:Codon; D018620:PrPSc Proteins; D011994:Recombinant Proteins