SeqStain is an efficient method for multiplexed, spatialomic profiling of human and murine tissues

Area of Science:

• Biomedical Imaging
• Molecular Biology
• Histology

Background:

• Understanding spatial organization of molecules and cells in tissues is crucial for health and disease.
• Current visualization methods for spatial relationships in complex microenvironments have limitations.

Purpose of the Study:

• To introduce SeqStain, a novel multiplex immunofluorescence imaging method.
• To demonstrate SeqStain's capability for analyzing complex cellular and tissue structures.

Main Methods:

• SeqStain utilizes fluorescent-DNA-labeled antibodies for immunofluorescent staining.
• Enzymatic de-staining with nuclease treatment allows selective removal of fluorescent signals.
• Incorporation of endonuclease restriction sites enables targeted signal removal.

Main Results:

• SeqStain efficiently analyzes complex cells and tissues using various antibody types.
• Selective enzymatic removal of signals preserves other markers for subsequent analysis.
• Application on human kidney tissue generated a spatialomic profile of over 25 markers.

Conclusions:

• SeqStain is a versatile, user-friendly, and gentle technique for spatialomic analysis.
• The method provides detailed insights into the spatial organization of complex microenvironments.
• SeqStain advances the study of tissue architecture in both healthy and diseased states.