TSWIFT, a novel method for iterative staining of embedded and mounted human brain sections

Area of Science:

• Neuroscience
• Biochemistry
• Pathology

Background:

• Characterizing protein networks in mounted brain tissue is crucial for understanding brain and neurodegenerative diseases.
• Existing methods face challenges in preserving tissue architecture and enabling repeated analysis.

Approach:

• Developed TSWIFT (iterative staining) for pre-mounted formalin-fixed, paraffin-embedded (FFPE) brain sections.
• Demonstrated TSWIFT's ability to conserve tissue architecture and allow over 10 relabeling cycles, even after storage.
• Applied TSWIFT to profile HSP70 family chaperones (HSC70 and BiP) in human brain tissue.

Key Points:

• TSWIFT enables high-dimensional sample phenotyping on mounted FFPE brain sections.
• The method is robust, allowing multiple analyses of the same tissue sample.
• Successfully profiled specific protein targets, demonstrating its utility in proteomic studies.

Conclusions:

• TSWIFT is an efficient method for integrated, high-dimensional proteomic analysis of mounted FFPE human brain tissue.
• This technique advances research in brain disorders by facilitating detailed molecular profiling.