NDLI: Processing and Degradation of Exogenous Prion Protein by CD11c+ Myeloid Dendritic Cells In Vitro

Content Provider	PubMed Central
Author	Luhr, Katarina M. Wallin, Robert P. A. Ljunggren, Hans-gustaf Löw, Peter Albert, Taraboulos Kristensson, Krister
Copyright Year	2002
Abstract	The immune system plays an important role in facilitating the spread of prion infections from the periphery to the central nervous system. CD11c+ myeloid dendritic cells (DC) could, due to their subepithelial location and their migratory capacity, be early targets for prion infection and contribute to the spread of infection. In order to analyze mechanisms by which these cells may affect prion propagation, we studied in vitro the effect of exposing such DC to scrapie-infected GT1-1 cells, which produce the scrapie prion protein PrPSc. In this system, the DC efficiently engulfed the infected GT1-1 cells. Unexpectedly, PrPSc, which is generally resistant to protease digestion, was processed and rapidly degraded. Based on this observation we speculate that CD11c+ DC may play a dual role in prion infections: on one hand they may facilitate neuroinvasion by transfer of the infectious agent as suggested from in vivo studies, but on the other hand they may protect against the infection by causing an efficient degradation of PrPSc. Thus, the migrating and highly proteolytic CD11c+ myeloid DC may affect the balance between propagation and clearance of PrPSc in the organism.
Related Links	http://dx.doi.org/10.1128/jvi.76.23.12259-12264.2002
Ending Page	12264
Page Count	6
Starting Page	12259
File Format	PDF
ISSN	0022538X
e-ISSN	10985514
Journal	Journal of Virology
Issue Number	23
Volume Number	76
Language	English
Publisher	American Society for Microbiology
Publisher Date	2002-12-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Immunology Virology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Virology Immunology Microbiology Insect Science

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