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Related Experiment Video

Updated: Jul 27, 2025

Spatial Profiling of Protein and RNA Expression in Tissue: An Approach to Fine-Tune Virtual Microdissection
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Spatial Profiling of Protein and RNA Expression in Tissue: An Approach to Fine-Tune Virtual Microdissection

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Protecting RNA quality for spatial transcriptomics while improving immunofluorescent staining quality.

Nina Hahn1,2, Martin Bens3, Marin Kempfer1

  • 1Section of Translational Neuroimmunology, Department of Neurology, Jena University Hospital, Jena, Germany.

Frontiers in Neuroscience
|June 5, 2023
PubMed
Summary
This summary is machine-generated.

This study optimizes spatial transcriptomics and immunofluorescence staining for mouse brain tissue. The improved protocol maintains RNA quality while enhancing antibody compatibility for better cellular analysis.

Keywords:
RNA protectionRNA qualityVisium spatialimmunofluorescent stainingmethanol fixationmouse brain transcriptomespatial transcriptomics

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Area of Science:

  • Molecular Biology
  • Neuroscience
  • Genomics

Background:

  • Spatial transcriptomics preserves gene expression and spatial context in tissues, unlike bulk or single-cell sequencing.
  • Combining spatial transcriptomics with immunofluorescence staining (e.g., 10× Genomics Visium) allows linking gene expression to cellular morphology and interactions.
  • Existing protocols may compromise RNA quality or limit antibody choices for combined analyses.

Purpose of the Study:

  • To develop an optimized protocol for combining spatial transcriptomics with immunofluorescence staining on fresh frozen mouse brain slices.
  • To investigate and improve parameters affecting both RNA integrity and antibody binding.
  • To enhance the compatibility of the protocol for a broader range of antibodies.

Main Methods:

  • Application of the 10× Genomics Visium platform to fresh frozen mouse brain cryo-sections.
  • Systematic investigation of fixation time and buffer composition effects on RNA quality and antibody staining.
  • Development and validation of a modified protocol based on experimental findings.

Main Results:

  • The developed protocol successfully preserves RNA quality during immunofluorescence staining.
  • The improved protocol enhances buffer compatibility, enabling the use of additional antibodies not supported by the manufacturer's protocol.
  • Optimization of fixation and buffer parameters was crucial for balancing RNA integrity and antibody signal.

Conclusions:

  • An improved protocol for combined spatial transcriptomics and immunofluorescence staining in mouse brain tissue has been established.
  • This optimized protocol maintains high RNA quality and broadens the scope of immunofluorescence applications.
  • The findings provide a foundation for developing tailored staining protocols for specific spatial biology research needs.