Clinical Report: IL-10-Driven Communication in High-Grade Serous Ovarian Cancer

Overview

This study characterizes the IL-10-dependent communication between inflammatory cancer-associated fibroblasts (iCAFs) and M2 macrophages in the ascites of high-grade serous ovarian cancer (HGSOC).

Background

High-grade serous ovarian cancer (HGSOC) is a leading cause of gynecological cancer mortality, often diagnosed at advanced stages with poor outcomes. The ascitic fluid in HGSOC represents a complex tumor microenvironment where immune cells interact with tumor and stromal elements, contributing to immune evasion and therapeutic resistance. Understanding the cellular communication within this environment is crucial for developing effective therapies.

Data Highlights

Key Findings

• Single-cell RNA sequencing revealed macrophages and CAFs as dominant populations in HGSOC ascites.
• IL-10–IL-10RA signaling was identified as a key communication pathway between iCAFs and M2 macrophages.
• iCAFs exhibited high levels of IL-10, while M2 macrophages showed increased expression of IL-10 receptors.
• Multiplex immunofluorescence confirmed spatial interactions between IL-10+ iCAFs and IL-10RA+ M2 macrophages.
• IL-10 blockade significantly inhibited tumor growth and altered macrophage polarization in PDX models.

Clinical Implications

The identification of the IL-10-dependent communication axis provides insights into the mechanisms of immune suppression in HGSOC.

Conclusion

This study highlights the role of IL-10 in mediating communication between iCAFs and M2 macrophages.

Related Resources & Content

1. Frontiers | Single-Cell and Spatial Profiling Reveal an IL-10–Associated iCAF–M2 Macrophage Communication Axis in High-Grade Serous Ovarian Cancer Ascites
2. Gastric Cancer — Lineage-Specific Changes in Tumor-Associated Macrophages Promote Immune Evasion in Ascitic Tumor Cells of Gastric Cancer with Peritoneal Metastasis
3. Gastric Cancer — M2 Phenotype Tumor-Associated Macrophages Facilitate Progression of Gastric Cancer with Peritoneal Metastasis
4. Frontiers in Oncology — Understanding the immune microenvironment of ovarian cancer
5. ESMO Clinical Practice Guideline Express Update on the management of epithelial ovarian cancer - PMC
6. The ASCO Post — IL-17A Promotes and GM-CSF Suppresses Circulating Tumor Cells and Metastasis in Colorectal Cancer
7. ESMO Clinical Practice Guideline Express Update on the management of epithelial ovarian cancer - PMC
8. Mirvetuximab Soravtansine in FRα-Positive, Platinum-Resistant Ovarian Cancer | New England Journal of Medicine
9. Frontiers | Single-Cell and Spatial Profiling Reveal an IL-10–Associated iCAF–M2 Macrophage Communication Axis in High-Grade Serous Ovarian Cancer Ascites