Single-cell resolution spatial analysis of antigen-presenting cancer-associated fibroblast niches
- PMID: 41005303
- PMCID: PMC12479095
- DOI: 10.1016/j.ccell.2025.09.001
Single-cell resolution spatial analysis of antigen-presenting cancer-associated fibroblast niches
Abstract
Recent studies identify a unique subtype of cancer-associated fibroblasts (CAFs) termed antigen-presenting CAFs (apCAFs), which remain poorly understood. To gain a comprehensive understanding of the origin and function of apCAFs, we construct a fibroblast molecular atlas across 15 types of tissues and solid tumors. Our integration study unexpectedly reveals two distinct apCAF populations present in most cancer types: one associated with mesothelial-like cells and the other with fibrocytes. Using a high-resolution single-cell spatial imaging platform, we characterize the spatial niches of these apCAF populations. We find that mesothelial-like apCAFs are located near cancer cells, while fibrocyte-like apCAFs are associated with lymphocyte-enriched niches. Additionally, we discovered that both apCAF populations can up-regulate secreted phosphoprotein 1 (SPP1), which facilitates primary tumor formation, peritoneal metastasis, and therapy resistance. Taken together, this study offers an unprecedented resolution in analyzing apCAFs and their spatial niches.
Keywords: cancer-associated fibroblast; fibrocyte; mesothelial cell; pancreatic cancer; peritoneal metastasis.
Copyright © 2025 The Author(s). Published by Elsevier Inc. All rights reserved.
Conflict of interest statement
Declaration of interests The authors declare no competing interests.
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