Journal: Cancer Discovery
Article Title: TREM2-Expressing Multinucleated Giant Macrophages Are a Biomarker of Good Prognosis in Head and Neck Squamous Cell Carcinoma
doi: 10.1158/2159-8290.CD-24-0018
Figure Lengend Snippet: Spatial transcriptomics reveals a unique MGC signature. A, Low magnification of a representative HES section of a carcinoma selected for spatial transcriptomic analysis. Inset, high magnification of an MGC. B, Same HES section with the overlay of the spots analyzed by Visium technology. One spot is covering a single MGC. C, Low magnification of a representative HES of an MGC High carcinoma from a patient in the GR cohort. D, Overlay of the seven cell populations analyzed by unsupervised clustering. E, Same HES section showing pathologist annotations of the tumor area (blue) and the MGC (yellow). F, Low magnification of a representative HES of an MGC Low carcinoma from a patient in the GR cohort. G, Overlay of the seven cell populations analyzed by unsupervised clustering. H, Same HES section showing pathologist annotations of the tumor area (blue). I, Projection of the Visium spots onto a UMAP space; spots from nine different patients. J, Histograms showing the number of spots capturing the different cell types in MGC High and MGC Low carcinomas. K, Volcano plot showing MGC RNA signature extracted from the DEG analysis between supervised MGC spots and all the other non-MGC spots. L, Volcano plot showing the DEG between MGC High and MGC Low tumors from patients in TCGA cohort ( n = 108 patients). M, GSEA plot showing the enrichment of the Visium MGC signature in MGC High vs. MGC Low patients classified from TCGA. The green line represents the running enrichment score for the MGC signature, with the peak indicating maximum enrichment. The normalized enrichment score (NES) is 3.24, and the P value is 0.000522, demonstrating significant enrichment of the MGC signature in MGC High patients. The barcode plot shows the positions of the MGC signature genes within the ranked list of genes from the bulk RNA sequencing data, with a higher density of genes towards the left, indicating higher enrichment.
Article Snippet: We exploited Visium spatial transcriptomic technology (10x Genomics) to analyze the single giant cell transcriptomes of MGC, on formalin-fixed, paraffin-embedded (FFPE) HNSCC tumor sections ( and ).
Techniques: RNA Sequencing