Bavarian Center for Biomolecular Mass Spectrometry, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany.
Chair of Food Chemistry and Molecular Sensory Science, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, Germany.
J Proteome Res. 2024 Aug 2;23(8):3124-3140. doi: 10.1021/acs.jproteome.3c00771. Epub 2024 Jul 25.
A multimetabo-lipid-prote-omics workflow was developed to characterize the molecular interplay within proximal (PC) and distal (DC) colonic epithelium of healthy mice. This multiomics data set lays the foundation to better understand the two tissue types and can be used to study, for example, colon-related diseases like colorectal cancer or inflammatory bowel disease. First, the methyl -butyl ether extraction method was optimized, so that from a single tissue biopsy >350 reference-matched metabolites, >1850 reference-matched lipids, and >4500 proteins were detected by using targeted and untargeted metabolomics, untargeted lipidomics, and proteomics. Next, each omics-data set was analyzed individually and then merged with the additional omics disciplines to generate a deep understanding of the underlying complex regulatory network within the colon. Our data demonstrates, for example, differences in mucin formation, detected on substrate level as well as on enzyme level, and altered lipid metabolism by the detection of phospholipases hydrolyzing sphingomyelins to ceramides. In conclusion, the combination of the three mass spectrometry-based omics techniques can better entangle the functional and regional differences between PC and DC tissue compared to each single omics technique.
开发了一种多代谢-脂质-蛋白质组学工作流程,以表征健康小鼠近端(PC)和远端(DC)结肠上皮内的分子相互作用。该多组学数据集为更好地理解这两种组织类型奠定了基础,并可用于研究与结肠相关的疾病,如结直肠癌或炎症性肠病。首先,优化了甲基-丁基醚提取方法,以便通过靶向和非靶向代谢组学、非靶向脂质组学和蛋白质组学,从单个组织活检中检测到>350 个参考匹配的代谢物、>1850 个参考匹配的脂质和>4500 个蛋白质。接下来,分别分析每个组学数据集,然后与其他组学学科合并,以深入了解结肠内复杂的潜在调节网络。例如,我们的数据表明,在底物水平和酶水平上检测到的粘蛋白形成存在差异,以及通过检测水解鞘磷脂产生神经酰胺的磷脂酶来改变脂质代谢。总之,与单一组学技术相比,基于三种质谱的组学技术的组合可以更好地理清 PC 和 DC 组织之间的功能和区域差异。
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