(Press-News.org) Addressing Current Limitations in Spatial Omics
Existing tools for spatial proteomics often have constraints. Many are not equipped to predict multiple localizations for individual proteins or to quantify across different cellular compartments. In addition, their use frequently requires programming knowledge and lacks accessible interfaces, which can limit broader application. Spatial lipidomics has remained challenging due to the absence of reliable markers for lipid localization.
Introducing a Tool for Integrated Spatial Proteomics and Lipidomics
C-COMPASS was developed to address these methodological gaps. The software uses neural networks to predict multiple subcellular protein localizations and incorporates total proteome data to assess changes in protein distribution and organelle abundance. It includes a graphical user interface and standardized processing steps designed to support reproducible analyses.
“With C-COMPASS, we wanted to create a tool that makes spatial proteomics more accessible and easier to reproduce,” says developer Daniel Haas. Project leader Dr. Natalie Krahmer adds: “For the first time, it also allows us to explore spatial lipidomics by combining proteome and lipidome data in a unified workflow. We can now generate cellular atlases of organs and tissues at combined proteome and lipidome levels, what enables researchers to address many new questions.”
The research team applied C-COMPASS to investigate spatial protein distributions in humanized liver tissue and examined how these patterns shift under different metabolic conditions. They then extended the workflow by integrating proteomic and lipidomic data, enabling spatial lipidomics for the first time. To localize lipids, the researchers mapped them onto spatial reference maps derived from proteomics data. This approach was applied to humanized mouse liver samples and revealed changes in lipid distribution associated with metabolic perturbations.
Future Applications and Ongoing Development
The team plans to apply C-COMPASS to a variety of datasets to gain deeper insights into dynamic, metabolism-related changes in protein localization. They are also working to improve the software further – with features like support for other spatial omics methods, such as spatial transcriptomics.
About the Researchers
Dr. Natalie Krahmer is an Emmy Noether Research Group Leader for “Cellular Proteomics and Metabolic Signaling” at the Institute for Diabetes and Obesity at Helmholtz Munich and scientist at the German Center for Diabetes Research (DZD).
Daniel Haas is a PhD student at the Institute for Diabetes and Obesity at Helmholtz Munich.
About Helmholtz Munich
Helmholtz Munich is a leading biomedical research center. Its mission is to develop breakthrough solutions for better health in a rapidly changing world. Interdisciplinary research teams focus on environmentally triggered diseases, especially the therapy and prevention of diabetes, obesity, allergies, and chronic lung diseases. With the power of artificial intelligence and bioengineering, researchers accelerate the translation to patients. Helmholtz Munich has around 2,500 employees and is headquartered in Munich/Neuherberg. It is a member of the Helmholtz Association, with more than 43,000 employees and 18 research centers the largest scientific organization in Germany. More about Helmholtz Munich (Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt GmbH): www.helmholtz-munich.de/en
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C-Compass: AI-based software maps proteins and lipids within cells
2025-12-04
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