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© Research
Publication : Proceedings of the National Academy of Sciences of the United States of America

B lymphocyte-restricted expression of prion protein does not enable prion replication in prion protein knockout mice

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Proceedings of the National Academy of Sciences of the United States of America - 13 Mar 2001

Montrasio F, Cozzio A, Flechsig E, Rossi D, Klein MA, Rülicke T, Raeber AJ, Vosshenrich CA, Proft J, Aguzzi A, Weissmann C

Link to Pubmed [PMID] – 11274428

Proc. Natl. Acad. Sci. U.S.A. 2001 Mar;98(7):4034-7

Prion replication in spleen and neuroinvasion after i.p. inoculation of mice is impaired in forms of immunodeficiency where mature B lymphocytes are lacking. In spleens of wild-type mice, infectivity is associated with B and T lymphocytes and stroma but not with circulating lymphocytes. We generated transgenic prion protein knockout mice overexpressing prion protein in B lymphocytes and found that they failed to accumulate prions in spleen after i.p. inoculation. We conclude that splenic B lymphocytes are not prion-replication competent and that they acquire prions from other cells, most likely follicular dendritic cells with which they closely associate and whose maturation depends on them.

http://www.ncbi.nlm.nih.gov/pubmed/11274428