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Weissmann, C; Raeber, A J; Montrasio, F; Hegyi, I; Frigg, R; Klein, M A; Aguzzi, A (2001). Prions and the lymphoreticular system. Philosophical Transactions of the Royal Society B: Biological Sciences, 356(1406):177-184.

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Following intracerebral or peripheral inoculation of mice with scrapie prions, infectivity accumulates first in the spleen and only later in the brain. In the spleen of scrapie-infected mice, prions were found in association with T and B lymphocytes and to a somewhat lesser degree with the stroma, which contains the follicular dendritic cells (FDCs) but not with non-B, non-T cells; strikingly, no infectivity was found in lymphocytes from blood of the same mice. Transgenic PrP knockout mice expressing PrP restricted to either B or T lymphocytes show no prion replication in the lymphoreticular system. Therefore, splenic lymphocytes either acquire prions from another source or replicate them in dependency on other PrP-expressing cells. The essential role of FDCs in prion replication in spleen was shown by treating mice with soluble lymphotoxin-beta receptor, which led to disappearance of mature FDCs from the spleen and concomitantly abolished splenic prion accumulation and retarded neuroinvasion following intraperitoneal scrapie inoculation.


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Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Institute of Neuropathology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Date:28 February 2001
Deposited On:11 Feb 2008 12:26
Last Modified:05 Apr 2016 12:20
Publisher:Royal Society Publishing
Publisher DOI:10.1098/rstb.2000.0763
PubMed ID:11260798

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