TSA Multiplex Immunofluorescence Detection Service
Tissues are not uniform — the position of a cell relative to its neighbors often carries as much information as the markers it expresses. Conventional single-color immunohistochemistry reveals one target at a time and consumes precious sample. Our TSA-based multiplex immunofluorescence (mIF) detection service lets researchers visualize and quantify several protein markers simultaneously within the same tissue section, turning a single slide into a spatial map of cell types, states, and interactions.
This capability is especially valuable where tissue is limited and context matters: tumor microenvironments, immune infiltration, inflammatory foci, and developmental or neurodegenerative regions all benefit from seeing multiple signals in place rather than across separate cuts.
How the Method Works
The service is built on tyramide signal amplification. A primary antibody binds the target, a horseradish-peroxidase-conjugated secondary converts a fluorophore-labeled tyramide into a reactive deposit that stays fixed at the target site, and the first antibody pair is then stripped. Repeating the cycle with different fluorophores accumulates several distinct signals on one section. Because each marker is deposited and locked in before the next cycle, many targets can be resolved from a single specimen without repositioning.
Figure 1. Mechanism of tyramide signal amplification (TSA) staining. (Source: Hoyt CC. 2021)
What the Service Covers
- Sample types – formalin-fixed paraffin-embedded (FFPE) sections, frozen sections, and tissue microarray (TMA) cores.
- Panel scale – flexible marker panels, from a few targets up to higher-plex combinations, designed around your research question.
- Staining and imaging – optimized sequential staining, whole-slide or region-of-interest imaging, and high-resolution digital capture.
- Quantitative analysis – cell segmentation, phenotype calling, and spatial relationship reporting so results are numbers, not impressions.
Typical Workflow
| Step | Activity |
| Consultation & panel design | Define targets, sample format, and analysis goals; select compatible fluorophores and cycle order |
| Section preparation | Slide mounting, antigen retrieval, and blocking according to sample type |
| Sequential staining | Cycles of primary, enzyme-conjugated secondary, tyramide deposition, and stripping |
| Imaging | Multichannel acquisition on a compatible fluorescence scanner |
| Analysis & reporting | Segmentation, phenotyping, spatial metrics, and a structured result package |
Applications
- Oncology & immunity – tumor microenvironment mapping, immune cell infiltration, and checkpoint-marker co-expression.
- Biomarker research – multi-marker signatures on limited clinical material.
- Drug development – pharmacodynamic and target-engagement readouts in tissue.
- Basic discovery – spatial organization of signaling and cell-state networks.
Why Choose a Dedicated Service
Multiplex fluorescence is sensitive to cycle order, antibody compatibility, and imaging balance. Outsourcing to a focused service reduces method-development time, protects scarce samples from failed runs, and delivers analysis-ready data. Our process emphasizes careful panel design and validated staining so that the spatial patterns you observe are reproducible and quantifiable.
Reference
- Hoyt CC. Multiplex Immunofluorescence and Multispectral Imaging: Forming the Basis of a Clinical Test Platform for Immuno-Oncology. Front Mol Biosci. 2021 Jun 2;8:674747.
