时间标签：数据日期 2026-11-05 · 生成时间 2026-11-05 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/11/02 – 2026/11/06 ｜ 情报发生日期 2026-11-05
研究问题
PPARγ agonists generated substantial interest in AD because of their links to mitochondrial biogenesis, inflammation, and glucose metabolism [135], but it remains unclear whether and how PPARγ influences lipid metabolism in astrocytes.；Future astrocyte-specific studies with lipid or mitochondrial characterizations will be important for determining whether these benefits reflect direct correction of astrocytic lipid metabolism or broader systems-level effects (Fig. 3).Targeting pathogenic lipid signalingA complementary therapeutic strategy is to target pathogenic lipid signaling rather than directly altering lipid levels and distribution.
方法
In disease settings, these normally protective and adaptive pathways can become chronically rewired, leading to defective cholesterol handling, abnormal APOE lipidation, impaired lipid waste disposal and replenishment, as well as lipid-linked inflammatory signaling that collectively contribute to neurodegeneration.In this review, we examine astrocytic lipid metabolism as a common framework for understanding neurodegenerative processes.；We first present lipid metabolism within the broader context of astrocyte biology and reactive state heterogeneity.；We then discuss the core physiological pathways of cholesterol synthesis, APOE lipidation, FA trafficking, LD storage, mitochondrial β-oxidation, and myelin lipid support.
核心结论
In disease settings, these normally protective and adaptive pathways can become chronically rewired, leading to defective cholesterol handling, abnormal APOE lipidation, impaired lipid waste disposal and replenishment, as well as lipid-linked inflammatory signaling that collectively contribute to neurodegeneration.In this review, we examine astrocytic lipid metabolism as a common framework for understanding neurodegenerative processes.；For in-depth discussions on microglial lipid metabolism and its implications in neurodegenerative diseases, we refer readers to several recent comprehensive reviews on this topic [16, 49–52].Overall, astrocytes are state-dependent regulators of tissue homeostasis whose functions are closely linked to metabolic state and intercellular communications.；A recent study further demonstrates that APOE isoforms differentially regulate neuronal lipid export and intercellular lipid trafficking, including the transport of oxidized unsaturated lipids through ATP-binding cassette transporter A7 (ABCA7), with APOE4 reducing lipid transport efficiency and elevating neuronal ferroptosis and excitotoxicity relative to APOE2 and APOE3 Christchurch (APOE3Ch) [80].
局限
When these homeostatic programs fail, however, astrocytes can also propagate chronic stress and damage signals across cell types.；However, oligodendrocytes do not meet this demand autonomously.；However, clinical findings with this strategy have been mixed.
对本项目的价值
中等价值：属「脑老化与神经退行」方向；脑老化 / 神经退行 / 认知栏目可用作本项目文献库与综述素材。 ｜ 价值分 2.7/5（★★★☆☆）
全文来源
PubMed PMC JATS（正文 52,657 字符，题名指纹 0.92，已过 PubMed PMCID 官方关联 + 题名指纹 + 正文长度归属校验）
原文题录
- 中文题名：星形胶质细胞脂代谢在脑健康与神经退行中的角色：从调控枢纽到适应不良性应激源
- 英文标题：Astrocyte lipid metabolism in brain health and neurodegeneration: from regulatory hub to maladaptive stressor.
- 期刊与标识：Molecular neurodegeneration · PMID 42972384 · DOI 10.1186/s13024-026-00981-x · PMC PMC13729323