Article ; Online: Microglia: Friend and foe in tauopathy.
2022 Volume 216, Page(s) 102306
Abstract: Aggregation of misfolded microtubule associated protein tau into abnormal intracellular inclusions defines a class of neurodegenerative diseases known as tauopathies. The consistent spatiotemporal progression of tau pathology in Alzheimer's disease (AD) ... ...
| Abstract | Aggregation of misfolded microtubule associated protein tau into abnormal intracellular inclusions defines a class of neurodegenerative diseases known as tauopathies. The consistent spatiotemporal progression of tau pathology in Alzheimer's disease (AD) led to the hypothesis that tau aggregates spread in the brain via bioactive tau "seeds" underlying advancing disease course. Recent studies implicate microglia, the resident immune cells of the central nervous system, in both negative and positive regulation of tau pathology. Polymorphisms in genes that alter microglial function are associated with the development of AD and other tauopathies. Experimental manipulation of microglia function can alter tau pathology and microglia-mediated neuroinflammatory cascades can exacerbate tau pathology. Microglia also exert protective functions by mitigating tau spread: microglia internalize tau seeds and have the capacity to degrade them. However, when microglia fail to degrade these tau seeds there are deleterious consequences, including secretion of exosomes containing tau that can spread to neurons. This review explores the intersection of microglia and tau from the perspective of neuropathology, neuroimaging, genetics, transcriptomics, and molecular biology. As tau-targeted therapies such as anti-tau antibodies advance through clinical trials, it is critical to understand the interaction between tau and microglia. |
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| MeSH term(s) | Alzheimer Disease/metabolism ; Brain/metabolism ; Humans ; Microglia/metabolism ; Neurons/metabolism ; Tauopathies/metabolism ; tau Proteins/metabolism |
| Chemical Substances | tau Proteins |
| Language | English |
| Publishing date | 2022-06-14 |
| Publishing country | England |
| Document type | Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural |
| ZDB-ID | 185535-9 |
| ISSN | 1873-5118 ; 0301-0082 |
| ISSN (online) | 1873-5118 |
| ISSN | 0301-0082 |
| DOI | 10.1016/j.pneurobio.2022.102306 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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