Super-resolved highly multiplexed immunofluorescence imaging for precise protein localization and podocyte...

Area of Science:

• Cell Biology
• Molecular Biology
• Biotechnology

Background:

• Conventional immunofluorescence and light microscopy have limitations in resolution and multiplexity for complex tissues.
• Challenges include spectral overlap, limited antibody choices, sample variability, and optical resolution limits.
• Understanding protein interactions and regulation in (patho-)physiological conditions is vital for research and diagnostics.

Purpose of the Study:

• To develop a method combining multiplex immunofluorescence imaging and super-resolution microscopy for precise subcellular protein localization in tissue sections.
• To enable routine use and compatibility with super-resolution microscopy for ultrastructural studies of podocytes.
• To establish a computerized workflow for data processing using accessible reagents and open-access code.

Main Methods:

• Cyclic staining and de-staining of paraffin kidney sections.
• Integration with super-resolution microscopy for high-resolution imaging.
• Development of a computerized workflow for data processing.

Main Results:

• Demonstrated precise subcellular localization of proteins in kidney sections.
• Identified CDH2 as a marker for cellular lesions in sclerotic glomeruli using a mouse model.
• Validated the finding using a human Nephroseq dataset, indicating translatability.

Conclusions:

• The developed multiplex imaging technique overcomes conventional limitations, enabling detailed analysis of protein localization in FFPE kidney sections.
• Compatibility with super-resolution microscopy allows for ultrastructural studies of podocytes.
• The approach advances multiplex imaging for understanding cellular and molecular changes in kidney disease research.