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  • Showing results for Next-generation[Title] AND active[Title] AND immunization[Title] AND approach[Title] AND synucleinopathies[Title] AND implications[Title] AND Parkinson's[Title] AND disease[Title] AND clinical[Title] AND trials[Title]. Your search for Next‑generation active immunization approach for synucleinopathies: implications for Parkinson’s disease clinical trials retrieved no results.
Acta Neuropathol. 2014;127(6):861-79. doi: 10.1007/s00401-014-1256-4. Epub 2014 Feb 14.

Next-generation active immunization approach for synucleinopathies: implications for Parkinson's disease clinical trials.

Author information

1
AFFiRiS AG, Vienna Biocenter, 1030, Vienna, Austria, markus.mandler@affiris.com.

Abstract

Immunotherapeutic approaches are currently in the spotlight for their potential as disease-modifying treatments for neurodegenerative disorders. The discovery that α-synuclein (α-syn) can transmit from cell to cell in a prion-like fashion suggests that immunization might be a viable option for the treatment of synucleinopathies. This possibility has been bolstered by the development of next-generation active vaccination technology with short peptides-AFFITOPEs(®) (AFF)- that do not elicit an α-syn-specific T cell response. This approach allows for the production of long term, sustained, more specific, non-cross reacting antibodies suitable for the treatment of synucleinopathies, such as Parkinson's disease (PD). In this context, we screened a large library of peptides that mimic the C-terminus region of α-syn and discovered a novel set of AFF that identified α-syn oligomers. Next, the peptide that elicited the most specific response against α-syn (AFF 1) was selected for immunizing two different transgenic (tg) mouse models of PD and Dementia with Lewy bodies, the PDGF- and the mThy1-α-syn tg mice. Vaccination with AFF 1 resulted in high antibody titers in CSF and plasma, which crossed into the CNS and recognized α-syn aggregates. Active vaccination with AFF 1 resulted in decreased accumulation of α-syn oligomers in axons and synapses, accompanied by reduced degeneration of TH fibers in the caudo-putamen nucleus and by improvements in motor and memory deficits in both in vivo models. Clearance of α-syn involved activation of microglia and increased anti-inflammatory cytokine expression, further supporting the efficacy of this novel active vaccination approach for synucleinopathies.

PMID:
24525765
PMCID:
PMC4034750
DOI:
10.1007/s00401-014-1256-4
[Indexed for MEDLINE]
Free PMC Article

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