Article ; Online: Aberrantly activated TAK1 links neuroinflammation and neuronal loss in Alzheimer's disease mouse models.
2023 Volume 136, Issue 6
Abstract: Neuroinflammation is causally associated with Alzheimer's disease (AD) pathology. Reactive glia cells secrete various neurotoxic factors that impair neuronal homeostasis eventually leading to neuronal loss. Although the glial activation mechanism in AD ... ...
Abstract | Neuroinflammation is causally associated with Alzheimer's disease (AD) pathology. Reactive glia cells secrete various neurotoxic factors that impair neuronal homeostasis eventually leading to neuronal loss. Although the glial activation mechanism in AD has been relatively well studied, how it perturbs intraneuronal signaling, which ultimately leads to neuronal cell death, remains poorly understood. Here, we report that compound stimulation with the neurotoxic factors TNF and glutamate aberrantly activates neuronal TAK1 (also known as MAP3K7), which promotes the pathogenesis of AD in mouse models. Glutamate-induced Ca2+ influx shifts TNF signaling to hyper-activate TAK1 enzymatic activity through Ca2+/calmodulin-dependent protein kinase II, which leads to necroptotic cellular damage. Genetic ablation and pharmacological inhibition of TAK1 ameliorated AD-associated neuronal loss and cognitive impairment in the AD model mice. Our findings provide a molecular mechanism linking cytokines, Ca2+ signaling and neuronal necroptosis in AD. |
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MeSH term(s) | Animals ; Mice ; Alzheimer Disease/genetics ; Calcium ; Cytokines/metabolism ; Neuroinflammatory Diseases ; Signal Transduction/physiology |
Chemical Substances | Calcium (SY7Q814VUP) ; Cytokines ; MAP kinase kinase kinase 7 (EC 2.7.11.25) |
Language | English |
Publishing date | 2023-03-13 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2993-2 |
ISSN | 1477-9137 ; 0021-9533 |
ISSN (online) | 1477-9137 |
ISSN | 0021-9533 |
DOI | 10.1242/jcs.260102 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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