What question did this study set out to answer?

To systematically characterize the spatial cellular neighborhoods formed by lymphoma and infiltrating immune cells and determine their association with immune evasion and patient outcomes.

April 4, 2024LeukemiaOpen Access

High-plex imaging and cellular neighborhood spatial analysis reveals multiple immune escape and suppression patterns in diffuse large B-cell lymphoma

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To systematically characterize the spatial cellular neighborhoods formed by lymphoma and infiltrating immune cells and determine their association with immune evasion and patient outcomes.
Assayed tissue sections from two patient cohorts using multiplexed ion beam imaging (MIBI) with a 33-marker panel (Cohort A, N=30, with 24-month progression-free survival data) and a 17-marker panel (Cohort B, N=55, real-world cases).
Calculated cellular neighborhoods based on each cell and its 20 nearest neighbors across nine immune cell lineages and tumor cells, defining cellular neighborhood clusters (CNCs) and sample-level subtypes (CNSTs) via k-means and hierarchical clustering.
Identified eight reproducible neighborhood clusters, showing physical segregation of CD4+ T cells from tumor-dense areas alongside spatial proximity between tumor cells and immunosuppressive Tregs or CD68+CD163+ macrophages.
Demonstrated that tumor cells in immune-rich neighborhoods expressed significantly higher levels of suppressive ligands PD-L1 and IDO-1 compared to immune-sparse neighborhoods (p < 3e-8).
Showed that enrichment of dual-positive (CD68+CD163+) macrophage neighborhoods significantly correlated with shorter progression-free survival (log-rank p = 0.004) and early relapse within 9 months (p = 0.02).

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Implication

Observational imaging study reveals immunosuppressive cellular neighborhoods in diffuse large B-cell lymphoma, indicating novel spatial drivers of immune evasion.

Cite This Study

Reiss et al. (2024) studied this question.

synapsesocial.com/papers/6a706f44660549caf2c50375 https://doi.org/10.1038/s41375-024-02239-1

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Implication

Observational imaging study reveals immunosuppressive cellular neighborhoods in diffuse large B-cell lymphoma, indicating novel spatial drivers of immune evasion.

High-plex imaging and cellular neighborhood spatial analysis reveals multiple immune escape and suppression patterns in diffuse large B-cell lymphoma

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Discussion

Implication

Cite This Study

High-plex imaging and cellular neighborhood spatial analysis reveals multiple immune escape and suppression patterns in diffuse large B-cell lymphoma

Key Points

Discussion

Implication

Cite This Study

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