ArticleFrontiers in molecular neuroscience2025
CHI3L1 monoclonal antibody therapy mitigates cognitive impairment by inhibiting neuroinflammation through ERK and NF-κB pathway in Tg2576 mice.
Article in Frontiers in molecular neuroscience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Alzheimer's disease (AD) is neurodegenerative disorder characterized by chronic inflammation in the brain. Chitinase-3-like 1 (CHI3L1), a secreted glycoprotein that is upregulated in a variety of diseases with chronic inflammation, represents a promising target for AD. Here, we studied the inhibitory effect of a novel CHI3L1 monoclonal antibody (H1) on memory impairment and neuroinflammation in Tg2576 transgenic mice. Methods and results: H1 was shown to cross the blood-brain barrier selectively, as confirmed by fluorescence imaging. Tg2576 mice were administered H1 (2 mg/kg, i.v., weekly for 1 month), and cognitive functions were assessed through behavioral tests. H1 treatment alleviated memory impairment and reduced amyloid deposition and neuroinflammation both in Tg2576 mice and Aβ-induced BV-2 microglial cells. Mechanistically, H1 inhibited the ERK and NF-κB signaling pathways and suppressed M1 microglial marker expression. Global proteomic analysis and gene expression profiling in BV-2 cells and Tg2576 mouse brains revealed a strong association between CHI3L1 and HAX1 expression. H1 therapy significantly reduced HAX1 levels in both Discussion: These findings suggest that CHI3L1 monoclonal antibody therapy may attenuate cognitive decline in AD by modulating neuroinflamma.
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