肺上皮细胞挥发性代谢物概况的变化是由TGF-β1的亲纤维刺激引起的
Conal Hayton1,2, Waqar Ahmed1, Peter Cunningham1
1Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
Journal of breath research
|August 24, 2023
概括
挥发性有机化合物 (VOC) 在肺细胞系之间存在差异,并随着亲纤维刺激而发生变化. 刺激细胞中类素的增加表明了异常性肺纤维化 (IPF) 的潜在呼气生物标志物.
科学领域:
- 生物化学和分子生物学
- 肺部医学 肺部医学
- 分析化学 分析化学
背景情况:
- 异形性肺纤维化 (IPF) 是一种进展性肺病,治疗选择有限.
- 呼气中的挥发性有机化合物 (VOC) 正在成为各种疾病的潜在非侵入性生物标志物,包括IPF.
- 了解VOCs的细胞起源对于开发准确的诊断工具至关重要.
研究的目的:
- 为了识别与A549和MRC-5肺细胞系相关的VOC.
- 通过转化生长因子β1 (TGF-β1),一个关键的亲纤维细胞因子,进行刺激后,研究VOC概况的变化.
- 探索细胞VOCs作为IPF生物标志物的潜力.
主要方法:
- 动态头部空间采样用于从肺细胞系培养物 (A549和MRC-5) 中收集VOC.
- 采集的样品被用热溶解气色谱法-质谱法 (TD-GC-MS) 分析.
- 监督分析,特别是稀疏部分最小平方差异分析 (sPLS-DA),用于识别差异性VOC配置文件.
主要成果:
- 对每个细胞系确定了不同的VOC档案,并与媒体对照区分开来.
- 用TGF-β1刺激显著改变了两个细胞系的VOC概况.
- 在TGF-β1刺激细胞中,发现了包括异皮诺碳醇,沙烯和3-烯在内的几种类化合物的丰度较高.
结论:
- 细胞的VOC配置文件是特定的肺细胞类型的独特特征,并且对亲纤维细胞信号产生反应.
- 在受刺激细胞中观察到的化物增加可能表明TGF-β1诱导的代谢重编程.
- 这些发现突显了特定的VOC,特别是类的潜力,作为候选生物标志物,用于在呼气中检测IPF.
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