Miltenyi Biotec has published a new application note detailing a complete 3D-to-multiplex spatial biology workflow, offering researchers a practical guide to combining whole-organ light sheet imaging with high-plex single-cell proteomic profiling on the same specimen. The note expands on a recent webinar exploring how 2D and 3D spatial biology techniques can be linked, providing the underlying methods and data for those who attended the session as well as a standalone resource for researchers encountering the approach for the first time.
Bridging whole-organ imaging and single-cell resolution
A persistent challenge in spatial biology has been reconciling the scale of whole-organ or whole-tissue imaging with the molecular depth of single-cell, high-plex profiling. Techniques that excel at mapping large-scale tissue architecture often sacrifice molecular detail, while highly multiplexed profiling methods are typically confined to small tissue sections chosen somewhat independently of the broader anatomical context.
The workflow outlined in the application note addresses this gap directly by carrying a single specimen through both stages of analysis. It begins with 3D immunofluorescence imaging, used to map intact tissue architecture across an entire organ and identify specific regions of interest before any sectioning takes place. This upfront step allows researchers to make informed, anatomically grounded decisions about which regions of a tissue warrant deeper molecular investigation, rather than selecting sections based on limited 2D reference points.
From light sheet imaging to precise cryosectioning
Once regions of interest have been identified through whole-organ light sheet imaging, the application note describes how light sheet–guided histology enables anatomically precise cryosectioning. Rather than sectioning tissue based on estimated coordinates or general anatomical landmarks, researchers can use the 3D imaging data itself to guide where sections are taken, improving the likelihood that downstream molecular profiling captures the specific structures or regions of biological interest identified during the imaging stage.
This tight coupling between imaging and sectioning is one of the workflow’s central technical contributions, as it directly connects macro-scale tissue architecture to the specific sections that will later undergo high-plex molecular analysis.
Preserving epitope integrity across the full workflow
A key technical question for any workflow that combines multiple imaging and profiling modalities on a single specimen is whether earlier processing steps compromise the molecular signals needed for later ones. The application note addresses this by detailing how epitope integrity and fluorochrome signal are preserved throughout the entire process, from initial 3D immunofluorescence imaging through cryosectioning and into the subsequent high-plex profiling stage.
This preservation is essential to the workflow’s core value proposition: that the same specimen, rather than serial or adjacent specimens, can move through 3D architectural mapping and deep molecular profiling without losing the signal fidelity required for accurate downstream interpretation.
High-plex profiling with MACSima MICS technology
The final stage of the workflow applies MACSima® MICS technology to achieve single-cell profiling across more than 100 markers on the same tissue sections previously mapped and sectioned using the light sheet–guided approach. This high degree of multiplexing allows researchers to build detailed single-cell profiles within the precise anatomical context established earlier in the workflow, linking molecular identity to spatial location at both the organ and single-cell scale.
Demonstrated in a glioblastoma mouse model
The application note includes full methods, results, and data from a glioblastoma mouse model, giving researchers a concrete, disease-relevant example of the workflow in practice. Glioblastoma, known for its complex and heterogeneous tumor microenvironment, serves as a demanding test case for a workflow that aims to connect whole-organ architecture with single-cell molecular detail, making the included dataset a useful reference point for researchers considering similar applications in oncology or neuroscience research.
A resource for spatially oriented research programs
For laboratories where spatial context is central to their research questions, the application note offers a detailed look at what becomes possible when 3D imaging and high-plex proteomics are applied to the same specimen rather than treated as separate workflows. Researchers interested in the full methodology, including detailed protocols and the complete glioblastoma dataset, can download the application note directly from Miltenyi Biotec.