Challenges and Opportunities for Immunoprofiling Using a Spatial High-Plex Technology: The NanoString GeoMx^® Digital...

Area of Science:

• Oncology
• Immunology
• Biotechnology

Background:

• Tumor microenvironment (TME) immunoprofiling is vital for understanding immune interactions and identifying biomarkers.
• Tissue heterogeneity and sample size often limit current immunoprofiling studies.
• Predictive biomarkers for immunotherapy response are essential in precision oncology.

Purpose of the Study:

• To provide a technical overview of the nanoString GeoMx Digital Spatial Profiler (DSP).
• To review the advantages and limitations of DSP applications in translational research.
• To offer considerations for experimental design using DSP for high-plex profiling.

Main Methods:

• Utilizing the nanoString GeoMx DSP for high-plex protein and RNA profiling.
• Analyzing spatial and temporal aspects of tumors in limited tissue samples.
• Comparing DSP capabilities with other multiplex and high-plex platforms.

Main Results:

• DSP allows high-plex profiling of TME, aiding biomarker discovery.
• The platform enables assessment of biomarkers for prognosis and immunotherapy response.
• DSP offers higher throughput and biomarker interrogation compared to other platforms.

Conclusions:

• DSP is a valuable tool for TME characterization and biomarker identification in oncology.
• Limitations include the lack of single-cell resolution and co-expression data.
• Careful experimental design is crucial for maximizing DSP's utility in translational immune-oncology research.