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Peer-reviewed veterinary case report

Different antigenicities of the N-terminal region of cellular and scrapie prion proteins.

Journal:
Microbiology and immunology
Year:
2013
Authors:
Ushiki-Kaku, Yuko et al.
Affiliation:
Nippi Research Institute of Biomatrix
Species:
rodent

Abstract

Limited information is available about conformational differences between the abnormal isoform of prion protein (PrP(Sc) ) and cellular prion protein (PrP(C) ) under native conditions. To clarify conformational differences between these two isoforms, PrP-deficient mice were immunized with brain homogenates of normal and scrapie-infected animals. All mice generated anti-PrP antibodies. Peptide array analysis of these serum samples revealed a distinctive epitope of PrP(Sc) consisting of QGSPGGN (PrP41-47) at the N-terminus. This study demonstrated a conformational dissimilarity at the N-terminus between PrP(Sc) and PrP(C) , a finding that may provide novel information about conformational features of PrP(Sc) .

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Original publication: https://pubmed.ncbi.nlm.nih.gov/24117858/