Abstract
Lipids and proteins compartmentalize biological membranes into nanoscale domains, which are crucial for signalling, intracellular trafficking and many other cellular processes. Studying nanodomain function requires the ability to measure protein and lipid localization at the nanoscale. Current methods for visualizing lipid localization do not meet this requirement. Here we introduce a correlative light and electron microscopy workflow to image lipids (Lipid-CLEM), combining near-native lipid probes and on-section labelling by click chemistry. This approach enables the quantification of relative lipid densities in membrane nanodomains. We find differential partitioning of sphingomyelin into intraluminal vesicles, recycling tubules and the boundary membrane of the early endosome, representing a degree of nanoscale organization previously observed only for proteins. We anticipate that our Lipid-CLEM workflow will greatly facilitate the mechanistic analysis of lipid functions in cell biology, allowing for the simultaneous investigation of proteins and lipids during membrane nanodomain assembly and function.
| Original language | English |
|---|---|
| Journal | Nature Cell Biology |
| DOIs | |
| Publication status | Published - 20 Mar 2026 |
Funding
A.N. gratefully acknowledges financial support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement nos. GA 758334 ASYMMEM and AURORA). A.N. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG) via the TRR83 consortium. This research was supported by an Allen Distinguished Investigator Award, a Paul G. Allen Frontiers Group advised grant of the Paul G. Allen Family Foundation to A.N. O.A. gratefully acknowledges financial support by the Israel Science Foundation (grant no. 3729/20), the ERC under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 851080), the Henry Chanoch Krenter Institute for Biomedical Imaging and Genomics and support given by the Heineman Foundation through Minerva. O.A. is the incumbent of the Miriam Berman presidential development chair. G.F. thanks the support by the Simons Foundation (CCBx programme, no. 1157392). We thank the following services and facilities at MPI-CBG Dresden for their support: the Electron Microscopy Facility, the Light Microscopy Facility, the Genome Engineering Facility, the Scientific Computing Facility and the Organoid and Stem Cell Facility. We thank J. Peychl, B. Schroth-Diez and T. Fürstenhaupt for their outstanding support and expert advice. We thank the Core Facility Cellular Imaging at the Faculty of Medicine Carl Gustav Carus at TU Dresden for technical support. We thank P. Ronchi and A. von Appen for expert advice during the development of the CLEM workflow and V. Oorschot for advising on immunogold labellin
All Science Journal Classification (ASJC) codes
- Cell Biology
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