ArticleJournal of neuroinflammation2025
Microglial double stranded DNA accumulation induced by DNase II deficiency drives neuroinflammation and neurodegeneration.
Article in Journal of neuroinflammation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Alzheimer's Disease as a Multi-Layer Network Disorder: A Systems Biology Framework Integrating Multi-Omics Mechanisms.Biomedicines · 2026Review
- DNA Sensing and Neuroinflammation: Mechanistic Insights into cGAS-STING Biology and Therapeutic Translation in Age-Related Neurodegenerative Diseases.Molecular neurobiology · 2026Review
- Tmem110 regulates the conformation of TRPML1 to maintain endolysosomal homeostasis and prevent mitochondrial DNA leakage and pathological self-DNA processing.Nature communications · 2026Article
- DNAH11 impairs memory via disrupted synaptic plasticity in noise-induced hidden hearing loss mice.Cell biology and toxicology · 2025Article
- Cell-free DNA in sepsis: from molecular insights to clinical management.Military Medical Research · 2025Review
- The Role and Therapeutic Potential of the cGAS-STING Signaling Pathway in Alzheimer's Disease.Brain and behavior · 2025Review
- cGAS-STING signaling in brain aging and neurodegeneration: molecular links and therapeutic perspectives.Journal of neuroinflammation · 2025Review
- Telomere-driven senescence accelerates tau pathology, neuroinflammation and neurodegeneration in a tauopathy mouse model.Acta neuropathologica communications · 2025Article
- The STING Signaling: A Novel Target for Central Nervous System Diseases.Cellular and molecular neurobiology · 2025Review
- Anti-Inflammatory Combination of Puerarin and Ac2-26 Using Intranasal Delivery for Effective Against Ischemic Stroke in Rat Model.International journal of nanomedicine · 2025Article
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Abstract
backgroundDeoxyribonuclease 2 (DNase II) is pivotal in the clearance of cytoplasmic double stranded DNA (dsDNA). Its deficiency incurs DNA accumulation in cytoplasm, which is a hallmark of multiple neurodegenerative diseases. Our previous study showed that neuronal DNase II deficiency drove tau hyperphosphorylation and neurodegeneration (Li et al., Transl Neurodegener 13:39, 2024). Although it has been verified that DNase II participates in type I interferons (IFN-I) mediated autoinflammation and senescence in peripheral systems, the role of microglial DNase II in neuroinflammation and neurodegenerative diseases such as Alzheimer's disease (AD) is still unknown.
methodsThe levels of microglial DNase II in triple transgenic AD mice (3xTg-AD) were measured by immunohistochemistry. The cognitive performance of microglial DNase II deficient WT and AD mice was determined using the Morris water maze test, Y-maze test, novel object recognition test and open filed test. To investigate the impact of microglial DNase II deficiency on microglial morphology, cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway and IFN-I pathway, neuroinflammation, synapses loss, amyloid pathology and tauopathy, the levels of cGAS-STING and IFN-I pathway related protein, gliosis and proinflammatory cytokines, synaptic protein, complement protein, Aβ levels, phosphorylated tau in the brains of the microglial DNase II deficient WT and AD mice were evaluated by immunolabeling, immunoblotting, q-PCR or ELISA.
resultsWe found that the levels of DNase II were significantly decreased in the microglia of 3xTg-AD mice. Microglial DNase II deficiency altered microglial morphology and transcriptional signatures, activated the cGAS-STING and IFN-I pathway, initiated neuroinflammation, led to synapse loss via complement-dependent pathway, increased Aβ levels and tauopathy, and induced cognitive decline.
conclusionsOur study shows the effect of microglial DNase II deficiency and cytoplasmic accumulated dsDNA on neuroinflammation, and reveals the initiatory mechanism of AD pathology, suggesting that DNase II is a potential target for neurodegenerative diseases.
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