希斯脱甲基酶LSD1在Cryptococcus neoformans感染期间调节脂质稳态
Gaurav Kumar Lohia1, Awantika Shah1, Kithiganahalli Narayanaswamy Balaji1
1Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, Karnataka 560012, India.
iScience
|September 22, 2025
概括
克里普托可克新型菌感染导致巨细胞中的脂质积累. 通过向激素修饰剂LSD1,可以减少真菌负担,并通过调节脂质来改善肺病理.
科学领域:
- 免疫学 免疫学 免疫学
- 菌类学 菌类学是指菌类学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 新型菌 (Cryptococcus neoformans) 是一种机会主义的真菌病原体,会引起菌脑膜炎,免疫力低下个体的死亡率高.
- 细胞内病原体利用富含脂质的泡性巨细胞作为营养来源和利基.
- 脂质失调和泡性巨细胞的形成是C. neoformans病变的关键方面.
研究的目的:
- 阐明宏自,特别是脂在C. neoformans感染期间脂质失调中的作用.
- 调查WNT信号传递和基因素修饰剂氨酸特异性脱甲酶1 (LSD1) 在C. neoformans驱动的脂质积累中的参与.
- 在肺部感染的小鼠模型中评估向宿主LSD1的治疗潜力.
主要方法:
- 在C. neoformans感染的巨体中研究了巨体和脂体.
- 分析了宿主巨细胞中的WNT信号通路激活和LSD1调节.
- 利用肺部C. neoformans感染的小鼠模型来评估LSD1向的影响.
主要成果:
- 新型菌感染激活WNT信号,导致异常的脂质积累在巨细胞通过LSD1.1.
- 针对宿主LSD1,在小鼠模型中显著降低了肺部真菌负担.
- 抑制LSD1改善了肺部病理,并降低了感染肺部的脂质含量.
结论:
- 主体LSD1的表观遗传调节在C. neoformans病变过程中调节泡性巨细胞的形成中发挥着关键作用.
- 脂质显著参与由C. neoformans引起的脂质失调.
- 向宿主LSD1代表了对抗C. neoformans感染的潜在治疗策略.
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