Article (Scientific journals)
Mouse vaccination with dendritic cells loaded with prion protein peptides overcomes tolerance and delays scrapie.
Bachy, Veronique; Ballerini, Clara; Gourdain, Pauline et al.
2010In Journal of General Virology, 91 (Pt 3), p. 809-20
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Keywords :
Animals; Antibodies/blood; Cell Transplantation; Cytokines/secretion; Dendritic Cells/immunology; Female; Immune Tolerance; Mice; Peptides/immunology; Prions/immunology; Scrapie/prevention & control; Survival Analysis; T-Lymphocytes/immunology
Abstract :
[en] Prion diseases are presumed to be caused by the accumulation in the brain of a pathological protein called prion protein (PrP) scrapie which results from the transconformation of cellular PrP, a ubiquitous glycoprotein expressed in all mammals. Since all isoforms of PrP are perceived as self by the host immune system, a major problem in designing efficient immunoprophylaxis or immunotherapy is to overcome tolerance. The present study was aimed at investigating whether bone-marrow-derived dendritic cells (DCs) loaded with peptides previously shown to be immunogenic in PrP-deficient mice, can overcome tolerance in PrP-proficient wild-type mice and protect them against scrapie. Results show that, in such mice, peptide-loaded DCs elicit both lymphokine release by T cells and antibody secretion against native cellular PrP. Repeated recalls with peptide-loaded DCs reduces the attack rate of 139A scrapie inoculated intraperitoneally and retards disease duration by 40 days. Most interestingly, survival time in individual mice appears to be correlated with the level of circulating antibody against native cellular PrP.
Disciplines :
Veterinary medicine & animal health
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Bachy, Veronique
Ballerini, Clara
Gourdain, Pauline
Prignon, Aurelie
Iken, Saci
Antoine, Nadine ;  Université de Liège - ULiège > Département de morphologie et pathologie > Histologie
Rosset, Martine
Carnaud, Claude
Language :
English
Title :
Mouse vaccination with dendritic cells loaded with prion protein peptides overcomes tolerance and delays scrapie.
Publication date :
2010
Journal title :
Journal of General Virology
ISSN :
0022-1317
eISSN :
1465-2099
Publisher :
Society for General Microbiology, London, United Kingdom
Volume :
91
Issue :
Pt 3
Pages :
809-20
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 May 2010

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