Tissue Clearing and 3-D Visualization of Vasculature with the PEGASOS Method

Area of Science:

• Biomedical Engineering
• Microscopy
• Histology

Background:

• Tissue clearing techniques enable 3D imaging of tissue architecture.
• Numerous clearing methods exist, each with specific applications.
• Selection criteria include transparency, fluorescence preservation, and tissue compatibility.

Purpose of the Study:

• To describe the PEGASOS (PEG-associated solvent system) tissue clearing protocol.
• To present compatible vascular labeling techniques for 3D imaging.
• To introduce methods for 3D imaging, data processing, and annotation.

Main Methods:

• Utilized the PEGASOS solvent-based tissue clearing method.
• Applied compatible vascular labeling techniques.
• Performed 3D imaging, data processing, and annotation.

Main Results:

• PEGASOS achieved high tissue transparency while preserving fluorescence.
• Enabled 3D visualization of vasculature at subcellular resolution.
• Demonstrated broad applicability across diverse tissues.

Conclusions:

• The PEGASOS method is a versatile tool for transparent tissue imaging.
• Facilitates detailed 3D reconstruction of tissue structures, particularly vasculature.
• Offers a robust approach for studying spatial organization and interactions within tissues.