| Autor: |
Sun Y; Department of Pharmacology, School of Pharmacy, China Pharmaceutical University, Nanjing, China., Liu C; Department of Pharmacology, School of Pharmacy, China Pharmaceutical University, Nanjing, China.; Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China., He L; Department of Pharmacology, School of Pharmacy, China Pharmaceutical University, Nanjing, China. |
| Jazyk: |
angličtina |
| Zdroj: |
Antioxidants & redox signaling [Antioxid Redox Signal] 2024 Dec; Vol. 41 (16-18), pp. 1117-1133. Date of Electronic Publication: 2024 Jul 08. |
| DOI: |
10.1089/ars.2023.0455 |
| Abstrakt: |
Aims: Adenosine, an important endogenous neuromodulator, contributes to a broad set of several neurodegenerative diseases. The adenosine A2A receptor (A2AR) is the most involved in neuropathological effects and plays an important role in the pathogenesis of Alzheimer's disease (AD). However, the effect of A2AR antagonist and the underlying mechanism in AD model mice remains unclear. Results: The amyloid beta (Aβ) 1-42 -induced mice AD models were used in this study. Several behavioral experiments were performed to evaluate the improvement of AD mice treated with A2AR antagonist. For mechanism analysis, autophagy-related proteins, Kelch-like ECH-associated protein1 (Keap1)-nuclear factor erythroid-derived factor 2-related factor (Nrf2) pathway activation, and synaptic function were studied using Western blot, immunofluorescence, immunohistochemistry, transmission electron microscope, real-time quantitative PCR, and patch clamp. Pharmacological blockade of adenosine A2AR by SCH58261 (SCH) ameliorated cognitive deficits and decreased expression levels of several AD biomarkers, including Aβ and hyperphosphorylation of Tau. Moreover, SCH activated the Nrf2 pathway through autophagy mediated Keap1 degradation, resulting in the improvement of neuron autophagy dysfunction, synaptic plasticity, and synaptic transmission. Innovation: Our data clarified that the SCH (an antagonist of A2AR) could increase the level of autophagy, promote the ability of antioxidative stress by the activation of Keap1-Nrf2 pathway, and improve the synaptic function in Aβ 1-42 -induced AD mice or cell model, which provided a potential therapeutic strategy for AD. Conclusion: A2AR antagonism represents a promising strategy for the anti-AD agent development through autophagy-dependent pathway. Antioxid. Redox Signal. 41, 1117-1133. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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