数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
研究问题
Dysfunctional immune responses impair remyelination and contribute to neurodegeneration.
方法
Mice AllexperimentswereperformedinaccordancewiththeGermananimal welfare law and local regulations for animal experiments of Bavaria andLowerSaxony.Animalsweregrouphoused(threetofivemice)ina controlledenvironment(temperatureof22 °C,30–70%humidity,12-h dark/12-hlightcycle)andhadaccesstofoodandwateradlibitumunder specificpathogenfreeconditions.MiceinthisstudyincludeC57BL/6J, Plp1Tg25 , BALB/cNctr-Npc1m1N/J (NPC1 KO)70,71 , C57BL/6-Npc1tm1.2Apl (NPC1fl/fl )72 , Soat1tm1.1Itl (SOAT1fl/fl )73 , Apoetm1Unc (APOEKO)74 , B6.Cx3cr1tm1.1(cre)Jung/Orl (Cx3cr1-Cre)75 and B6.129P2(C)-Cx3cr1tm2.1(cre/ ERT2)Jung/J (Cx3cr1-CreERT2)75 .；C57BL/6J, Cx3cr1-CreERT2, APOEKO and SOAT1fl/fl mice were purchased from Charles River Laboratories.；NPC- 1cKOandNPC1KOmicewerekindlyprovidedbySabinaTahirovic.Plp1Tg mice were kindly provided by Klaus-Armin Nave.；Plp1Tg × APOEKO were generated by cross-breeding Plp1Tg animals with APOEKO mice.
核心结论
InPlp1Tgmice,theDAM1subpopulation,markedbypro-inflammatory cytokines and chemokines including Ccl4/Mip1b, was significantly expanded, comprising approximately 23% of all microglia (Fig. ‖ 结论：These findings suggest that free cholesterol accumulation in microglial lysosomes might drive a pro-inflammatory, myelin-toxic state that contributes to progressive pathology.
局限
全文未设独立 limitations 节；结构上为非 RCT 设计，因果推断强度受限。
对本项目的价值
★★★★★ 方法学进展决定我们能否在有限样本下检出真实效应，属基础设施级收益。顶刊证据；命中核心 蛋白稳态/自噬；最大样本量约 5；设计 单细胞、多组学。
全文来源
Nature OA PDF（正文 152,005 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Chronic progressive demyelination induces a microglial state with lysosomal dysfunction.
- 期刊与标识：Nat Neurosci · PMID 42934349 · DOI 10.1038/s41593-026-02489-5**
A 级证据分级：A 级（同行评议人体研究）
本文属人体研究证据，但需注意：观察性或小样本干预的结论不等于已证实临床获益；效应量与长期安全性仍需更大规模、更长随访的试验验证。
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