Spatial atlas of diffuse large B-cell lymphoma

We leveraged highly multiplexed, single-cell–resolution spatial transcriptomics, bulk RNA sequencing, and tumor–germline paired whole-exome sequencing to profile 465 diffuse large B-cell lymphoma (DLBCL) tumors and define the assembly of 60 lymphoma microenvironment (LME) cell subsets and 5 tumor B cell states into conserved spatial niches and communities that resemble non-malignant lymphoid architecture. Three distinct LME-enriched communities were assembled from combinations of niches and reflected recently described LME archetypes with conserved spatial biology. Tumor B cells were enriched in three B communities harboring distinct, developmentally linked, transcriptional states associated with divergent cell-cell communication (CCC) pathways. Intratumoral heterogeneity in B communities was pervasive across patients and largely unlinked with molecular subtype. Combinations of B communities, rather than single states, were associated with patient outcome, implicating microenvironment-associated tumor B cell transcriptional plasticity in the biology and clinical behavior of DLBCL.

• Type: RNASeq
• Archive: European Genome-phenome Archive (EGA)