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Updated: Jul 9, 2025

A Novel Stromal Fibroblast-Modulated 3D Tumor Spheroid Model for Studying Tumor-Stroma Interaction and Drug Discovery
Published on: February 28, 2020
Emerging roles for tumor stroma in antigen presentation and anti-cancer immunity
Athanasios Papadas1,2, Yun Huang1,2, Alexander Cicala1,2
1Division of Blood and Marrow Transplantation, Department of Medicine, University of California San Diego (UCSD), La Jolla, CA, U.S.A.
Tumor stroma, not just a barrier, actively shapes immune responses by instructing antigen-presenting cells (APCs). This stromal control over APCs is crucial for effective CD8+ T cell activation against cancer.
Area of Science:
- Immunology
- Oncology
- Cell Biology
Background:
- Immunotherapy has transformed cancer treatment, but many patients lack durable responses.
- Traditional approaches like cancer vaccines show limitations.
- Understanding tumor antigen presentation and antigen-presenting cell (APC) heterogeneity is key to improving outcomes.
Conclusions:
- The tumor stroma acts as an 'immune rheostat,' actively regulating anti-tumor immunity.
- Stromal control over antigen presentation is a critical, yet underappreciated, factor in therapeutic success.
- Targeting stromal-APC interactions presents a significant therapeutic opportunity for enhancing cancer immunotherapy.
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