单细胞转录组学确定了烟草香味电子烟暴露的小鼠肺中的中性粒细胞动态变化和突出T细胞细胞毒性
Gagandeep Kaur1, Thomas Lamb1, Ariel Tjitropranoto1
1Department of Environmental Medicine, University of Rochester Medical Center, Rochester, United States.
eLife
|January 29, 2026
概括
电子烟的香味改变了肺部的免疫力,影响了髓状细胞和淋巴状细胞. 这项研究揭示了对电子烟暴露的风味特异性免疫反应,影响了中性细胞和T细胞群体.
科学领域:
- 免疫学 免疫学 免疫学
- 毒理学 毒理学 毒理学
- 肺部病理学 肺部病理学
背景情况:
- 电子烟 (e-cigs) 构成公共卫生风险,但它们对肺部免疫力的影响尚未完全理解.
- 香味依赖于电子烟暴露的免疫反应需要详细的描述.
研究的目的:
- 在急性暴露于风味电子烟气溶后,研究肺部细胞特异性免疫反应.
- 为了识别肺免疫格局中依赖于味道的变化.
主要方法:
- 仅通过鼻子暴露小鼠的风味电子烟气溶.
- 气溶的金属分析.
- 肺细胞的单细胞RNA测序 (scRNAseq). 肺细胞的单细胞RNA测序.
- 流细胞计. 流细胞计.
主要成果:
- 在气溶中观察到依赖于味道的金属液 (Ni,Cu,K,Zn).
- 在薄荷醇和烟草风味中,scRNAseq揭示了骨髓状细胞功能失调,在水果风味中揭示了淋巴状细胞失调.
- 流式细胞计量证实在暴露于薄荷醇/烟草的肺部中,中性粒细胞的增加和氨基粒细胞的减少.
- 电子烟暴露改变了T细胞比例,上调了炎症基因 (Stat4,Il1b,Il1ra,Cxcl3),并丰富了"Th1细胞因子信号传递"和"NK细胞降粒"通路.
- 接触烟草香味导致中性粒细胞不成熟和S100A8表达的改变.
结论:
- 急性电子烟气溶暴露会诱导肺部的风味特异性免疫变化.
- 这些发现突显了电子烟口味对髓状和淋巴状细胞功能的影响.
- 这项研究为进一步研究电子烟引起的肺炎机制提供了基础.
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