Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage using iDISCO+ and Light Sheet Fluorescence Microscopy
May 22nd, 2020
A protocol is presented combining tissue clearing with light sheet fluorescence microscopy (LSFM) to obtain three-dimensional and cellular resolution images of the lymphatic vessels and lymph nodes (LNs) collecting the cerebrospinal fluid (CSF) and spinal epidural fluid.
Overview
This protocol combines tissue clearing with light sheet fluorescence microscopy (LSFM) to visualize lymphatic vessels and lymph nodes in three dimensions. It enables detailed imaging of the lymphatic drainage system associated with cerebrospinal fluid and spinal epidural fluid.
Key Study Components
Area of Science
- Neuroscience
- Immunology
- Microscopy Techniques
Background
- Understanding lymphatic drainage is crucial for studying immune responses.
- Traditional imaging methods may not provide sufficient detail for lymphatic structures.
- This study employs advanced imaging techniques to overcome these limitations.
- The iDISCO+ protocol preserves tissue integrity for accurate localization of cells.
Purpose of Study
- To develop a method for visualizing vertebral lymphatic vessels and their draining lymph nodes.
- To facilitate the study of lymphatic traffic of immune cells.
- To enhance understanding of the lymphatic system's role in health and disease.
Methods Used
- iDISCO+ clearing protocol for tissue preparation.
- Light sheet fluorescence microscopy for imaging.
- Fluorescent tracer injection into the dura mater.
- Sequential dehydration and rehydration steps for sample processing.
Main Results
- Successful visualization of lymphatic vessels and nodes in 3D.
- Preservation of cellular integrity throughout the imaging process.
- Detailed mapping of immune cell traffic in the lymphatic system.
- High-resolution images obtained using LSFM techniques.
Conclusions
- The combined protocol provides a powerful tool for studying lymphatic structures.
- It opens new avenues for research into immune system dynamics.
- This method can be applied to various studies involving lymphatic and immune interactions.
Frequently Asked Questions
Executive Industry Relevance
Three-dimensional imaging of vertebral lymphatic vasculature using iDISCO+ and LSFM enables unprecedented visualization of CNS-associated lymphatic circuits, supporting mechanistic de-risking in neurovascular and neuroimmunology research. This capability enhances predictive confidence in early discovery and translational studies targeting CNS waste clearance, immune surveillance, and disease mechanisms. The approach is strategically positioned to inform target validation and biomarker development in neurodegenerative, oncologic, and musculoskeletal portfolios.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Enables high-resolution mapping of lymphatic drainage pathways relevant to CNS target validation.
- Supports mechanistic de-risking by visualizing immune cell and tracer trafficking in situ.
- Facilitates hypothesis testing on CNS waste clearance and immune surveillance mechanisms.
Screening & Assay Development
- Provides validated 3D imaging systems for quantitative assessment of lymphatic structure and function.
- Enables reproducible visualization of tracer uptake and drainage for assay standardization.
- Supports development of scalable imaging assays for compound or antibody screening targeting lymphatic pathways.
Translational & Preclinical Research
- Aligns imaging outputs with disease-relevant models in neuroimmunology and neurovascular biology.
- Enables continuity from discovery through preclinical validation by tracking molecular and cellular drainage circuits.
- Supports risk-adjusted advancement decisions for CNS-targeted therapeutics and biomarkers.
Pipeline & Workflow Integration
This method integrates into the discovery-to-preclinical continuum by providing quantitative, spatially resolved data on CNS lymphatic networks and drainage dynamics.
- Discovery Biology: Supports hypothesis testing and pathway clarification for CNS lymphatic function.
- Screening: Delivers reproducible, quantitative imaging outputs for assay readiness.
- Analytics: Enables measurement of tracer distribution and immune cell localization across experimental conditions.
- Translational Research: Connects imaging findings to disease models and biomarker strategies in CNS and vertebral disorders.
- Enterprise Reuse: Establishes a reusable imaging platform for diverse CNS and lymphatic research applications.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence and reduces mechanistic ambiguity in CNS lymphatic research.
- Operational Value: Standardizes 3D imaging workflows for reproducibility and scalability across studies.
- Strategic Value: Informs go/no-go decisions and portfolio prioritization for CNS and immunology programs.
- Portfolio Impact: Enables risk-adjusted advancement and cross-functional data integration in early and translational R&D.
Implementation Considerations
- Requires expertise in tissue clearing, immunolabeling, and advanced microscopy.
- Demands access to LSFM instrumentation and compatible analytical software for 3D reconstruction.
- Necessitates cross-team standardization of sample preparation and imaging protocols.
- Adaptation may be needed for different tissue sizes or species.
- Sample integrity and tracer injection precision are critical for reliable outputs.
Biopharma FAQs
Chapters in this video
0:04
Introduction
0:49
Intra-Cisterna Magna (ICM) and Thoracolumbar (ThLb) Injection
2:22
Perfusion and Tissue Dissection
3:34
Whole Mount Vertebral Segment Immunolabeling-Enabled Imaging of Solvent-Cleared Organs-Plus (iDISCO+)
6:14
Light Sheet Fluorescence Microscopy (LSFM) Imaging
8:02
Results: Representative Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage
9:21
Conclusion
