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燃烧性香烟与电子香烟暴露对KRAS突变肺癌促进的影响的比较

Walter V Velasco¹, Maria T Grimaldo², Nastaran Karimi¹

¹Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.

Neoplasia (New York, N.Y.)

|June 14, 2025

概括

电子烟蒸汽 (ECV) 和可燃香烟烟雾 (CCS) 创造了免疫抑制肺环境. 虽然CCS增加了肺瘤负担,但ECV没有,尽管有类似的免疫变化.

科学领域:

肺部医学肺部医学
免疫学免疫学免疫学
在瘤学瘤学.

背景情况:

电子烟蒸汽 (ECV) 是一个日益严重的公共卫生问题,但它们对肺癌的影响仍然不清楚.
了解ECV对肺部瘤发生的影响对于公共卫生至关重要.
目前对ECV和肺癌的研究是有限的.

研究的目的:

在小鼠模型中研究ECV暴露对肺腺癌发展的影响.
为了比较ECV和可燃香烟烟雾 (CCS) 对肺瘤发生和肺免疫微环境的影响.
分析肺部和肠道微生物组的相关变化.

主要方法:

在8周的时间里,小鼠每天暴露在室内空气,CCS或ECV中2小时.
分析了肺组织的瘤负担和免疫细胞群 (T细胞,髓质细胞).
对匹配的便和肺样本进行了微生物组分析.

主要成果:

CCS暴露显著增加了肺瘤负担,而ECV暴露没有.
无论是CCS还是ECV都诱导了一种前瘤免疫抑制性肺表型,减少CD4+ IFNγ+和CD8+ GZMB+ T细胞,同时增加CD4+ FOXP3+调节性T细胞.
在CCS和ECV组之间观察到髓状细胞的不同变化.
微生物组分析显示,随着这两种暴露,肺部Pseudomonadotas的变化和肠道Bacillota (Turicibacter,Ileibacterium) 的增加.

结论:

无论是CCS还是ECV暴露都会产生前瘤免疫抑制性肺微环境,尽管大小和表型不同.
这些免疫微环境的差异可能解释了CCS和ECV对肺瘤负担的差异性影响.
需要进一步的研究,以充分阐明涉及的长期影响和机制.

关键词:

香烟烟雾是因为烟雾.电子烟是一种电子烟.这是一个很棒的体验,很棒的体验.肺癌是一种肺癌.微生物组是一个微生物组.

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