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Frontzek K, Pfammatter M, Sorce S, et al. Neurotoxic Antibodies against the Prion Protein Do Not Trigger Prion Replication. PLoS One. 2016;11(9):e0163601doi: 10.1371/journal.pone.0163601.
Frontzek, K., Pfammatter, M., Sorce, S., Senatore, A., Schwarz, P., Moos, R., Frauenknecht, K., Hornemann, S., & Aguzzi, A. (2016). Neurotoxic Antibodies against the Prion Protein Do Not Trigger Prion Replication. PloS one, 11(9), e0163601. https://doi.org/10.1371/journal.pone.0163601
Frontzek, Karl, et al. "Neurotoxic Antibodies against the Prion Protein Do Not Trigger Prion Replication." PloS one vol. 11,9 (2016): e0163601. doi: https://doi.org/10.1371/journal.pone.0163601
Frontzek K, Pfammatter M, Sorce S, Senatore A, Schwarz P, Moos R, Frauenknecht K, Hornemann S, Aguzzi A. Neurotoxic Antibodies against the Prion Protein Do Not Trigger Prion Replication. PLoS One. 2016 Sep 29;11(9):e0163601. doi: 10.1371/journal.pone.0163601. eCollection 2016. PMID: 27684562; PMCID: PMC5042507.
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PLoS One. 2016 Sep 29;11(9):e0163601. doi: 10.1371/journal.pone.0163601. eCollection 2016.

Neurotoxic Antibodies against the Prion Protein Do Not Trigger Prion Replication.

PloS one

Karl Frontzek, Manuela Pfammatter, Silvia Sorce, Assunta Senatore, Petra Schwarz, Rita Moos, Katrin Frauenknecht, Simone Hornemann, Adriano Aguzzi

Affiliations

  1. Institute of Neuropathology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland.

PMID: 27684562 PMCID: PMC5042507 DOI: 10.1371/journal.pone.0163601

Abstract

Prions are the infectious agents causing transmissible spongiform encephalopathies (TSE), progressive, inexorably lethal neurological diseases. Antibodies targeting the globular domain (GD) of the cellular prion protein PrPC trigger a neurotoxic syndrome morphologically and molecularly similar to prion disease. This phenomenon raises the question whether such antibodies induce infectious prions de novo. Here we exposed cerebellar organotypic cultured slices (COCS) to the neurotoxic antibody, POM1. We then inoculated COCS homogenates into tga20 mice, which overexpress PrPC and are commonly utilized as sensitive indicators of prion infectivity. None of the mice inoculated with COCS-derived lysates developed any signs of disease, and all mice survived for at least 200 days post-inoculation. In contrast, all mice inoculated with bona fide prions succumbed to TSE after 55-95 days. Post-mortem analyses did not reveal any signs of prion pathology in mice inoculated with POM1-COCS lysates. Also, lysates from POM1-exposed COCS were unable to convert PrP by quaking. Hence, anti-GD antibodies do not catalyze the generation of prion infectivity. These data indicate that prion replication can be separated from prion toxicity, and suggest that anti-GD antibodies exert toxicity by acting downstream of prion replication.

Conflict of interest statement

The authors have declared that no competing interests exist.

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