3D subcellular localization with superresolution array tomography on ultrathin sections of various species

Area of Science:

• Cell Biology
• Microscopy Techniques
• Structural Biology

Background:

• Array Tomography (AT) integrates light and electron microscopy for correlative imaging.
• Combining AT with advanced preservation and imaging methods can enhance ultrastructural analysis.

Purpose of the Study:

• To establish and detail protocols for superresolution Array Tomography.
• To demonstrate the versatility of superresolution AT across diverse model systems.
• To enable detailed 3D mapping of subcellular structures.

Main Methods:

• High-pressure freezing for superior structural preservation.
• Superresolution light microscopy for detailed imaging.
• Array Tomography on ultrathin plastic sections.
• 3D reconstruction from correlated light and electron microscopy data.

Main Results:

• Developed and validated superresolution AT protocols for *Caenorhabditis elegans*, *Trypanosoma brucei*, and insect brain tissues.
• Successfully mapped small subcellular structures in 3D.
• Demonstrated species-specific modifications for protocol adaptability.

Conclusions:

• Superresolution Array Tomography is a versatile and powerful technique for ultrastructural analysis.
• The detailed protocols facilitate application across various model systems.
• Enables answering complex biological questions by correlating molecular identity with ultrastructure.