Conserved spatial subtypes and cellular neighborhoods of cancer-associated fibroblasts revealed by single-cell spatial multi-omics

Cancer Cell. 2025 May 12;43(5):905-924.e6. doi: 10.1016/j.ccell.2025.03.004. Epub 2025 Mar 27.

Abstract

Cancer-associated fibroblasts (CAFs) are a multifaceted cell population essential for shaping the tumor microenvironment (TME) and influencing therapy responses. Characterizing the spatial organization and interactions of CAFs within complex tissue environments provides critical insights into tumor biology and immunobiology. In this study, through integrative analyses of over 14 million cells from 10 cancer types across 7 spatial transcriptomics and proteomics platforms, we discover, validate, and characterize four distinct spatial CAF subtypes. These subtypes are conserved across cancer types and independent of spatial omics platforms. Notably, they exhibit distinct spatial organizational patterns, neighboring cell compositions, interaction networks, and transcriptomic profiles. Their abundance and composition vary across tissues, shaping TME characteristics, such as levels, distribution, and state composition of tumor-infiltrating immune cells, tumor immune phenotypes, and patient survival. This study enriches our understanding of CAF spatial heterogeneity in cancer and paves the way for novel approaches to target and modulate CAFs.

Keywords: cancer-associated fibroblast; cell-cell communication; cellular neighborhood; lymphoid aggregate; pan-cancer; spatial multi-omics; spatial transcriptomics; tertiary lymphoid structure; tumor associated macrophage; tumor microenvironment.

MeSH terms

  • Cancer-Associated Fibroblasts* / immunology
  • Cancer-Associated Fibroblasts* / metabolism
  • Cancer-Associated Fibroblasts* / pathology
  • Gene Expression Profiling
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Multiomics
  • Neoplasms* / genetics
  • Neoplasms* / immunology
  • Neoplasms* / metabolism
  • Neoplasms* / pathology
  • Proteomics* / methods
  • Single-Cell Analysis* / methods
  • Transcriptome
  • Tumor Microenvironment* / genetics
  • Tumor Microenvironment* / immunology