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Kim J, Han JY, Lee Y, Kim K, Choi YP, Chae S, Hoe HS. Genetic deletion of nitric oxide synthase 2 ameliorates Parkinson's disease pathology and neuroinflammation in a transgenic mouse model of synucleinopathy. Mol Brain 2023; 16:7. [PMID: 36647152 PMCID: PMC9841612 DOI: 10.1186/s13041-023-00996-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/02/2023] [Indexed: 01/17/2023] Open
Abstract
Studies of mouse models of Alzheimer's disease (AD) have demonstrated that nitric oxide synthase 2 (NOS2) is involved in AD pathology. However, the effects of NOS2 on the pathology of Parkinson's disease (PD) are not well studied. To address this gap, we examined the impact of NOS2 on disease-associated phenotypes in a mouse model of PD. Transgenic mice carrying the A53T mutation of α-synuclein (SynA53T) and newly generated double transgenic mice with deletion of NOS2 (SynA53T/NOS2-/-) were used. Compared with SynA53T mice, the loss of nos2 decreased α-synuclein phosphorylation at serine 129 and reduced α-synuclein-induced microglial and astrocyte activation in SynA53T/NOS-/- mice. Additionally, neuroinflammation-related gene clusters in the deep mesencephalic nucleus (DpMe) were altered in SynA53T/NOS-/- mice compared with SynA53T mice. Taken together, our results suggest that deletion of nos2 alleviates α-synuclein pathology and α-synuclein-associated neuroinflammatory responses in the brain.
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Affiliation(s)
- Jieun Kim
- grid.452628.f0000 0004 5905 0571Department of Neurodegenerative Diseases Group, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Jung-Youn Han
- grid.452628.f0000 0004 5905 0571Laboratory Animal Center, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Yujeong Lee
- grid.452628.f0000 0004 5905 0571Cognitive Science Research Group, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Kipom Kim
- grid.452628.f0000 0004 5905 0571Research Strategy Office, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Young Pyo Choi
- grid.452628.f0000 0004 5905 0571Laboratory Animal Center, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Sehyun Chae
- grid.452628.f0000 0004 5905 0571Neurovescular Unit Research Group, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea
| | - Hyang-Sook Hoe
- grid.452628.f0000 0004 5905 0571Department of Neurodegenerative Diseases Group, Korea Brain Research Institute (KBRI), 61, Cheomdan-Ro, Dong-Gu, Daegu, 41062 South Korea ,grid.417736.00000 0004 0438 6721Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988 South Korea
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Zhou W, Xiao D, Zhao Y, Tan B, Long Z, Yu L, He G. Enhanced Autolysosomal Function Ameliorates the Inflammatory Response Mediated by the NLRP3 Inflammasome in Alzheimer's Disease. Front Aging Neurosci 2021; 13:629891. [PMID: 33708103 PMCID: PMC7940192 DOI: 10.3389/fnagi.2021.629891] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/26/2021] [Indexed: 12/14/2022] Open
Abstract
The pathogenesis of Alzheimer’s disease (AD) involves activation of many NLRP3 inflammatory bodies, which may be related to amyloid β peptide and aggregation of misfolded proteins. Autophagy is an important regulator of inflammatory bodies. However, autophagy shows dynamic changes in the development of AD, and its role in inflammation remains controversial. In this study, the key link between autophagic disorders and the NLRP3 inflammasome in AD was investigated. APP/PS1 double transgenic mice and C57 mice with Aβ25–35 injected into the lateral ventricle were used as two animal models of AD. Immunofluorescence staining and Western blot analysis showed that NLRP3 inflammasome-related proteins and inflammatory cytokines, such as IL-1α, IL-1β, IL-6, IL-12, and TNF-α, were increased and microglia were activated in the brains of both AD animal models. Endogenous overexpression of the APPswe gene and exogenous addition of Aβ25–35 increased the expression of NLRP3 inflammasome-related proteins, while exogenous Aβ25–35 intervention more significantly activated inflammation. Furthermore, LC3 was increased in the AD animal and cell models, and the level of Lamp1 decreased. After overexpression of the primary regulator of lysosomal biogenesis, TFEB, the lysosome protein Lamp1 was increased, and LC3 and inflammatory protein expression were decreased. These results suggest that the NLRP3 inflammasome-mediated inflammatory response is activated in AD animal and cell models, which may be related to the decline in autolysosome function. Overexpression of the TFEB protein can reduce the inflammatory response by improving autolysosome function in AD model cells.
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Affiliation(s)
- Wen Zhou
- Department of Neurorehabilitation, The Affiliated Rehabilitation Hospital of Chongqing Medical University, Chongqing, China
| | - Deng Xiao
- Department of Neurorehabilitation, The Affiliated Rehabilitation Hospital of Chongqing Medical University, Chongqing, China
| | - Yueyang Zhao
- Department of Anatomy, Chongqing Medical University, Chongqing, China
| | - Botao Tan
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhimin Long
- Department of Anatomy, Chongqing Medical University, Chongqing, China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, China
| | - Lehua Yu
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guiqiong He
- Department of Anatomy, Chongqing Medical University, Chongqing, China.,Institute of Neuroscience, Chongqing Medical University, Chongqing, China
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Eremeeva NB, Makarova NV, Ignatova DF, Bakharev VV. Study of potential anti-carcinogenic and antioxidant effects of plant extracts. PROCEEDINGS OF UNIVERSITIES. APPLIED CHEMISTRY AND BIOTECHNOLOGY 2021. [DOI: 10.21285/2227-2925-2020-10-4-613-626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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