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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|Item Type:||Journal Article, refereed|
|Communities & Collections:||04 Faculty of Medicine > University Hospital Zurich > Institute of Neuropathology|
|DDC:||570 Life sciences; biology
610 Medicine & health
|Date:||28 February 2001|
|Deposited On:||11 Feb 2008 12:26|
|Last Modified:||23 Nov 2012 15:54|
|Publisher:||Royal Society Publishing|
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