What question did this study set out to answer?

This research aims to characterize T-cell engagement and diversity in high-risk neuroblastoma through spatial profiling.

Spatial T-Cell Receptor Profiling Reveals Engagement Barriers in Neuroblastoma

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Integrated profiling demonstrates limited T-cell localization in neuroblastoma, implying new immunotherapy targets.

This research aims to characterize T-cell engagement and diversity in high-risk neuroblastoma through spatial profiling.
Utilized hybrid-capture TCR sequencing on tumor samples and PBMCs
Implemented spatial transcriptomics on a large cell population
Applied MixTCRpred for TCR specificity prediction
Identified shared clonotypes using GLIPH2 against a reference TCR database
TCR diversity in PBMCs decreased during therapy, then recovered significantly
Tumor TCR diversity declined from biopsy to resection, with increased hyperexpanded clonotypes
Spatial profiling revealed macrophage barriers that limited T-cell access to tumor cells
Four tumor-reactive TCRα/β clonotypes, all CD8+ effector memory, were identified and shown to expand during therapy while maintaining spatial positions

Jiang et al. (2026) studied this question.

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