Related Experiment Video
Updated: Jan 15, 2026
Isolation, Culture, and Characterization of Prostate Cancer-Associated Fibroblasts
Published on: August 1, 2025
Spatial and single-cell multi-omics reveal pro-angiogenic THY1⁺ fibroblast subtypes predicting prognosis in prostate
Yongqiang Huang1, Chunping Xiang2, Yu Wang3
1Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical Colloge, Fudan University, Shanghai, 200032, China; Department of Urology, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, 200032, China.
Background:
Cancer-associated fibroblasts (CAFs) play a key role in prostate cancer (PCa) progression, though their heterogeneity and specific protumorigenic subsets remain poorly characterized. This study aimed to identify and validate a distinct THY1⁺ CAF subset associated with aggressive PCa.
Methods:
Multiomics data from public (TCGA-PRAD, GEO) and prospective (FUSCC, n = 84) cohorts were analyzed. An 8-gene CAF-derived prognostic signature was constructed using LASSO Cox regression. THY1⁺ CAF clusters were identified via scRNA-seq. Primary CAFs were isolated from patient tissues, and THY1⁺/THY1⁻ subpopulations were purified via MACS/FACS. Angiogenic function and secretory profiles were assessed through tube formation assays, ELISA, and antibody arrays. THY1 knockdown and CXCR2 inhibition were used for mechanistic studies. Clinical relevance was evaluated via qPCR and multiplex immunohistochemistry on tissue microarrays.
Results:
High CAF abundance correlated with aggressive clinicopathological features and poor prognosis in PCa. The 8-gene signature effectively predicted biochemical recurrence (BCR). scRNA-seq revealed THY1⁺ CAFs as a proangiogenic subpopulation. THY1⁺ CAFs enhanced angiogenesis via increased secretion of CXCL6 and VEGFA. CXCL6 promoted endothelial tube formation through CXCR2 activation, while THY1 knockdown downregulated VEGFA and impaired angiogenesis. High THY1⁺ CAF infiltration was associated with significantly worse recurrence-free survival.
Conclusion:
THY1⁺ CAFs represent a proangiogenic subset that drives PCa progression via the CXCL6/CXCR2 axis and THY1-mediated VEGFA expression. These findings highlight stromal THY1 and the CXCL6/CXCR2 pathway as potential therapeutic targets.
