DOI: 10.1002/ame2.70021
Effects of Dictyophora polysaccharide on cerebellar Purkinje cell degeneration in a chronic alcohol mouse model
Jian Zhang1
Zhihui Dai2
Huanhuan Yu3
Baofei Sun4
Jiuyang Ding1
Yuanhe Wang1
1.School of Forensic Medicine,Guizhou Medical University,Guiyang,China2.State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,China3.Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province,Guizhou University,Guiyang,China4.Key Laboratory of Human Brain Bank for Functions and Diseases of Department of Education of Guizhou Province,Guizhou Medical University,Guiyang,China
摘要：Background:Recent research showed that the NLRP3 inflammasome was activated in the central nervous system of mice administered chronic ethanol(EtOH).Dictyophora polysaccharides(DIPs)are essential components of the valuable edible fungus Dictyophora,which has antioxidant properties that can delay the aging process of the body.This study aimed to investigate the roles of NLRP3 in chronic EtOH-induced cerebellar Purkinje cell(PC)degeneration and behavioral changes.
Methods:C57BL/6J normal and NLRP3 knockout mice were exposed to EtOH for 14 days.Dictyophora polysaccharide(DIP)and NLRP3 inhibitor were administered to the EtOH mice.The pathology and NLRP3-ASC-caspase-1 signaling pathway proteins were analyzed in EtOH mice cerebellar tissues and behavioral performance was as-sessed in the mice.
Results:In the EtOH mouse model,we observed increases in the NLRP3 inflamma-some proteins,including NLRP3,ASC,caspase-1,mature IL-1β and pro IL-1β,loss of PCs,and motor coordination disorders.We found that DIPs could suppress the NLRP3-ASC-caspase-1 signaling pathway,and alleviate the motor deficits and cer-ebellar pathological changes in chronic EtOH mice.Next,we used MCC950,a NLRP3 inhibitor,and an NLRP3 knockout strategy to further verify the effects of NLRP3-ASC-caspase-1 signaling in chronic EtOH mice.MCC950 or NLRP3 knockout allevi-ated the EtOH-induced latency to decreases in fall time,increases in stride width and decreases in stride length.MCC950 or NLRP3 knockout also attenuated PC number loss and suppressed NLRP3 inflammation induced by EtOH.Taken together,pharma-cologically or genetically inhibiting NLRP3 alleviated EtOH-induced cerebellar degen-eration and behavioral deficits.
Conclusion:These findings indicated that DIPs might diminish EtOH-induced cerebel-lar degeneration and behavioral deficits through the NLRP3-ASC-caspase-1 signaling pathway,which provides a potential therapeutic target for the prevention and treat-ment of alcoholism and EtOH-induced cerebellar pathology.
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论文发表日期：2025-09-30
在线出版日期：2025-10-28（本平台首次上网日期，不代表文献的发表时间）
页数：11( 1656-1666 )
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