由cuproptosis驱动的天体细胞反应性加剧了实验性脑疟疾病原体的产生
Xinpeng Hou1,2, Xiumei Mo1, Xiaoran Zhang1
1Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
Parasites & vectors
|November 11, 2025
概括
铜,一种依赖铜的细胞死亡,通过增加天体细胞的反应性来加剧大脑疟疾 (CM). 调节铜水平可能为CM提供新的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 大脑疟疾 (CM) 是Plasmodium falciparum感染的致命并发症,其标志着血脑屏障 (BBB) 的破坏.
- 星球细胞是BBB的关键组成部分,但它们在CM病原发生中的作用尚不清楚.
- 在CM患者中观察到改变的铜稳态和星细胞反应性,这表明与cuproptosis有联系.
研究的目的:
- 为了研究 cuproptosis 的作用,一个依赖铜的细胞死亡途径,在实验性脑疟疾 (ECM).
- 评估使用二硫 (DSF) 和四聚酸 (TTM) 调节铜平衡的治疗潜力.
主要方法:
- 在C57BL/6小鼠中使用Plasmodium berghei ANKA (PbA) 的实验CM (ECM) 模型.
- 用铜离子离硫胺 (DSF) 和铜化剂四聚酸 (TTM) 进行药理调节.
- 在体外研究中,使用PbA感染的红细胞 (iRBC) 或在DSF-CuCl2或TTM-CuCl2治疗下溶解抗原 (PbAg) 刺激的星球细胞.
主要成果:
- 在ECM小鼠中,脑铜含量增加,cuproptosis标志物增加和BBB中断.
- DSF治疗恶化了ECM,而TTM治疗改善了病理表现.
- DSF诱导了天体细胞的反应性和cuproptosis标记物的同位化,效应被TTM扭转.
- 在体外,DSF-CuCl2增加了天体细胞的反应性和促炎媒介,而TTM-CuCl2逆转了这些效应.
结论:
- 杯性致死症通过促进天体细胞的反应性,加剧了ECM病原性.
- 调节铜平衡是一种CM的潜在治疗策略.
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