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Targeting α-synuclein by PD03 AFFITOPE■ and Anle 138b rescues neurodegenerative pathology in a model of multiple system atrophy:clinical relevance

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Translational Neurodegeneration 2020年第3期9卷 484-497页

作者： Miguel Lemos Serena Venezia Violetta Refolo Antonio Heras-Gavin Sabine Schmidhuber Armin Giese Andrei Leonov Sergey Ryazanov Christian Griesinger Gergana Galabova Guenther Safer Gregor Karl Wenning nadia stefanova Division of Neurobiology Department of NeurologyInnsbruck Medical University6020 InnsbruckAustria AFFIRIS AG ViennaAustria Center for Neuropathology and Prion Research Ludwig-Maximilians-UniversityMunichGermany Max Planck Institute for Biophysical Chemistry GottingenGermany Present Address:Origenis GmbH MunichGermany

Background:Misfolded oligomeric α-synuclein plays a pivotal role in the pathogenesis of a-synucleinopathies including Parkinson's disease and multiple system atrophy,and its detection parallels activation of microglia and a loss of neurons in the substantia nigra pars *** we aimed to analyze the therapeutic efficacy of PD03,a new AFFITOPE■ immunotherapy approach,either alone or in combination with Anle138b,in a PLP-α-syn mouse ***:The PLP-α-syn mice were treated with PD03 immunotherapy,Anle138b,or a combination of *** months after study initiation,the mice underwent behavioral testing and were sacrificed for neuropathological *** treatment groups were compared to the vehicle group with regard to motor performance,nigral neuronal loss,microglial activation and α-synuclein ***:The PLP-α-syn mice receiving the PD03 or Anle138b single therapy showed improvement of gait deficits and preservation of nigral dopaminergic neurons associated with the reduced α-synuclein oligomer levels and decreased microglial *** combined therapy with Anle138b and PD03 resulted in lower lgG binding in the brain as compared to the single immunotherapy with ***:PD03 and Anle138b can selectively target oligomeric α-synuclein,resulting in attenuation of neurodegeneration in the PLP-α-syn *** approaches are potential therapies that should be developed further for disease modification in α-synucleinopathies.

关键词： α-Synuclein Immunotherapy Oligomer modulation Target engagement Substantia nigra Microglia

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