第二代抗精神病药物通过aPKC依赖的途径诱导脂肪组织衍生中介细胞干细胞的代谢干扰
Marco Varalda1,2, Jacopo Venetucci1,2, Herald Nikaj3
1Department of Translational Medicine, Centre of Excellence in Aging Sciences, University of Piemonte Orientale, 28100 Novara, Italy.
Cells
|January 8, 2025
概括
第二代抗精神病药物扰乱了内脏脂肪干细胞中的细胞过程,损害了胰岛素信号传递,并导致代谢综合征. 抑制PKCζ可能为这些副作用提供治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 代谢研究研究 代谢研究
- 药理学 药理学是指药理学的学科.
背景情况:
- 代谢综合征 (MetS) 涉及内脏肥胖,脂质失调和胰岛素抵抗,内脏白脂肪组织 (vWAT) 起着关键作用.
- 在vWAT中的脂肪衍生干细胞 (ADSC) 对能量代谢,免疫调节和氧化应激至关重要.
- 长期使用第二代抗精神病药物 (SGA) 与增加MetS风险有关.
研究的目的:
- 调查SGA对vWAT内的ADSC的影响.
- 阐明SGA诱导的MetS背后的细胞机制.
- 确定潜在的治疗目标,以减轻SGA的代谢副作用.
主要方法:
- 研究了 olanzapine 和 clozapine 对ADSCs 的影响.
- 分析了脂肪原分化,脂质滴状形成和胰岛素受体动态.
- 通过TFEB激活,研究了内酶体区和 lysosomal biogenesis 中的改变.
- 研究了PKCζ,PLD和GPCR信号在SGA诱导的细胞变化中的作用.
主要成果:
- 奥兰zapine 干扰了脂肪原体的分化,并损害了胰岛素受体的内细胞形成,循环和信号传递.
- SGAs改变了内溶酶体系统,通过TFEB激活增加了溶酶体生物发生.
- PKCζ对于SGA诱导的TFEB核转位和酸性囊泡形成至关重要.
- 抑制PKCζ恢复了胰岛素信号传递和受体周转率在奥兰扎治疗后.
- 奥兰扎诱导的PKCζ激活涉及通过PLD和GPCR信号传导增加的酸合成.
结论:
- 奥兰zapine和clozapine通过PKCζ-依赖的途径扰乱了ADSCs中的内分泌体平衡和胰岛素信号传递.
- 在SGS中,SGA作为理解VWAT细胞功能障碍的工具.
- 这些发现可以指导开发疗法,以减少SGA的代谢不良影响.
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