临床级贴片作为一种富集汗液细胞外囊泡的介质,并促进其代谢分析。
Clinical-Grade Patches as a Medium for Enrichment of Sweat-Extracellular Vesicles and Facilitating Their Metabolic Analysis.
机构信息
Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220 Oulu, Finland.
Research Unit of Population Health Research, Faculty of Medicine, University of Oulu, 90570 Oulu, Finland.
出版信息
Int J Mol Sci. 2023 Apr 19;24(8):7507. doi: 10.3390/ijms24087507.
Cell-secreted extracellular vesicles (EVs), carrying components such as RNA, DNA, proteins, and metabolites, serve as candidates for developing non-invasive solutions for monitoring health and disease, owing to their capacity to cross various biological barriers and to become integrated into human sweat. However, the evidence for sweat-associated EVs providing clinically relevant information to use in disease diagnostics has not been reported. Developing cost-effective, easy, and reliable methodologies to investigate EVs' molecular load and composition in the sweat may help to validate their relevance in clinical diagnosis. We used clinical-grade dressing patches, with the aim being to accumulate, purify and characterize sweat EVs from healthy participants exposed to transient heat. The skin patch-based protocol described in this paper enables the enrichment of sweat EVs that express EV markers, such as CD63. A targeted metabolomics study of the sweat EVs identified 24 components. These are associated with amino acids, glutamate, glutathione, fatty acids, TCA, and glycolysis pathways. Furthermore, as a proof-of-concept, when comparing the metabolites' levels in sweat EVs isolated from healthy individuals with those of participants with Type 2 diabetes following heat exposure, our findings revealed that the metabolic patterns of sweat EVs may be linked with metabolic changes. Moreover, the concentration of these metabolites may reflect correlations with blood glucose and BMI. Together our data revealed that sweat EVs can be purified using routinely used clinical patches, setting the foundations for larger-scale clinical cohort work. Furthermore, the metabolites identified in sweat EVs also offer a realistic means to identify relevant disease biomarkers. This study thus provides a proof-of-concept towards a novel methodology that will focus on the use of the sweat EVs and their metabolites as a non-invasive approach, in order to monitor wellbeing and changes in diseases.
细胞分泌的细胞外囊泡 (EVs) 携带 RNA、DNA、蛋白质和代谢物等成分,由于其能够穿越各种生物屏障并整合到人体汗液中,因此成为开发用于监测健康和疾病的非侵入性解决方案的候选物。然而,尚未有报道称与汗液相关的 EVs 提供了可用于疾病诊断的临床相关信息。开发具有成本效益、简便可靠的方法来研究 EVs 在汗液中的分子负荷和组成,可能有助于验证它们在临床诊断中的相关性。我们使用了临床级别的敷贴剂,旨在从暴露于短暂热刺激的健康参与者中积累、纯化和表征汗液 EVs。本文描述的基于皮肤贴剂的方案能够富集表达 EV 标志物(如 CD63)的汗液 EVs。对汗液 EVs 的靶向代谢组学研究鉴定出 24 种成分。这些成分与氨基酸、谷氨酸、谷胱甘肽、脂肪酸、TCA 和糖酵解途径相关。此外,作为概念验证,当比较健康个体和暴露于热刺激后的 2 型糖尿病患者的汗液 EVs 中分离出的代谢物水平时,我们的发现表明,汗液 EVs 的代谢模式可能与代谢变化有关。此外,这些代谢物的浓度可能反映了与血糖和 BMI 的相关性。我们的数据共同表明,使用常规临床敷贴剂可以纯化汗液 EVs,为更大规模的临床队列工作奠定基础。此外,汗液 EVs 中鉴定出的代谢物也为识别相关疾病生物标志物提供了一种现实的方法。因此,本研究提供了一个概念验证,即专注于使用汗液 EVs 及其代谢物作为非侵入性方法,以监测健康和疾病变化。