Targeting Microglial and Neuronal Toll-like Receptor 2 in Synucleinopathies
Open accessAbstract
Synucleinopathies are neurodegenerative disorders characterized by the progressive accumulation of α-synuclein (α-syn) in neurons and glia and include Parkinson's disease (PD) and dementia with Lewy bodies (DLB). In this review, we consolidate our key findings and recent studies concerning the role of Toll-like receptor 2 (TLR2), a pattern recognition innate immune receptor, in the pathogenesis of synucleinopathies. First, we address the pathological interaction of α-syn with microglial TLR2 and its neurotoxic inflammatory effects. Then, we show that neuronal TLR2 activation not only induces abnormal α-syn accumulation by impairing autophagy, but also modulates α-syn transmission. Finally, we demonstrate that administration of a TLR2 functional inhibitor improves the neuropathology and behavioral deficits of a synucleinopathy mouse model. Altogether, we present TLR2 modulation as a promising immunotherapy for synucleinopathies.
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Neuron-released α-synuclein induces neurotoxic, pro-inflammatory microglial responses through Toll-like receptor 2 (TLR2).
“Neuron-released α-synuclein has been shown to induce neurotoxic, pro-inflammatory microglial responses through Toll-like receptor 2 (TLR2) but the molecular mechanisms involved are poorly understood.”
From LRRK2 mediates microglial neurotoxicity via NFATc2 in rodent models of synucleinopathies (2020) · cites this paper as [9]
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Toll‐like receptor 4 is required for α‐synuclein dependent activation of microglia and astroglia
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“Neurons release various forms of α-syn, including monomers, oligomers, and high molecular weight aggregates [31-34].”
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Iba, M., Kim, C., Sallin, M., Kwon, S., Verma, A., Overk, C., Rissman, R. A., Sen, R., Sen, J. M., & Masliah, E. (2020) · Journal of Neuroinflammation · doi:10.1186/s12974-020-01888-0 · Cited by 120 · see citing works
Self-citationRetractedLRRK2 mediates microglial neurotoxicity via NFATc2 in rodent models of synucleinopathies
Kim, C., Beilina, A., Smith, N., Li, Y., Kim, M., Kumaran, R., Kaganovich, A., Mamais, A., Adame, A., Iba, M., et al. (2020) · Science Translational Medicine · doi:10.1126/scitranslmed.aay0399 · Cited by 79 · see citing works
Self-citation
- Authors
- Kwon, S., Iba, M., Masliah, E., & Kim, C.
- Affiliations
- National Institutes of Health (US)
- Corresponding author
- Kim, Changyoun
- Venue
- Experimental Neurobiology
- Published
- 2019-10-31
- Volume
- 28
- Issue
- 5
- Pages
- 547-553
- ISSN
- 1226-2560 (ISSN-L)
- 2093-8144
- PMC
- PMC6844834
- OpenAlex
- W2984206771
- Cited by
- 35
- References
- 10
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 3 · 2023: 1 · 2022: 9 · 2021: 3 · 2020: 10
- FWCI
- 0.77
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- cc-by-nc
- Locations
- Experimental Neurobiology (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health, National institute on Aging
- Topics
- Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
- Keywords
- TLR2, synucleinopathies, alpha-synuclein, Parkinson's disease, dementia with Lewy bodies, microglia, innate immunity, neuroinflammation, autophagy, immunotherapy, neurodegeneration
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