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Pathological α-synuclein transmission initiated by binding lymphocyte-activation gene 3. | LitMetric

Pathological α-synuclein transmission initiated by binding lymphocyte-activation gene 3.

Science

Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Johns Hopkins Institute for NanoBio Technology, Johns Hopkins University, Baltimore, MD 21218, USA. Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.

Published: September 2016

AI Article Synopsis

Article Abstract

Emerging evidence indicates that the pathogenesis of Parkinson's disease (PD) may be due to cell-to-cell transmission of misfolded preformed fibrils (PFF) of α-synuclein (α-syn). The mechanism by which α-syn PFF spreads from neuron to neuron is not known. Here, we show that LAG3 (lymphocyte-activation gene 3) binds α-syn PFF with high affinity (dissociation constant = 77 nanomolar), whereas the α-syn monomer exhibited minimal binding. α-Syn-biotin PFF binding to LAG3 initiated α-syn PFF endocytosis, transmission, and toxicity. Lack of LAG3 substantially delayed α-syn PFF-induced loss of dopamine neurons, as well as biochemical and behavioral deficits in vivo. The identification of LAG3 as a receptor that binds α-syn PFF provides a target for developing therapeutics designed to slow the progression of PD and related α-synucleinopathies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5510615PMC
http://dx.doi.org/10.1126/science.aah3374DOI Listing

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