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Updated: Nov 13, 2025
A 3D Spheroid Model as a More Physiological System for Cancer-Associated Fibroblasts Differentiation and Invasion In Vitro Studies
Published on: August 8, 2019
Pancreatic cancer is suppressed by fibroblast-derived collagen I
1Department of Laboratory Medicine, Division of Translational Cancer Research, Lund University, Sweden.
Abstract:
Clinical implementation of anti-stromal therapies in pancreatic cancer has been delayed by unanticipated tumor-restraining properties of the desmoplastic stroma. In confronting these challenges, Chen et al. demonstrate in this issue of Cancer Cell that fibroblast-specific deletion of collagen I, in the background of oncogenic Kras-induced spontaneous murine pancreatic ductal adenocarcinoma, enhances immune suppression and accelerates progression of disease.
Insights
Targeting pancreatic cancer stroma is challenging. Deleting collagen I in cancer-associated fibroblasts unexpectedly worsened immune suppression and accelerated pancreatic ductal adenocarcinoma progression in mice.
Area of Science:
- Oncology
- Cancer Biology
- Tumor Microenvironment
Background:
- The desmoplastic stroma in pancreatic cancer presents a significant barrier to effective anti-stromal therapies.
- Tumor-associated fibroblasts (CAFs) play a critical role in shaping the tumor microenvironment and influencing therapeutic response.
Purpose of the Study:
- To investigate the role of collagen I, a major stromal component, in the context of pancreatic ductal adenocarcinoma (PDAC).
- To evaluate the impact of fibroblast-specific collagen I deletion on PDAC progression and immune surveillance.
Main Methods:
- Utilized a genetically engineered mouse model with oncogenic Kras-induced spontaneous PDAC.
- Generated fibroblast-specific knockout mice for collagen I (Col1a1) using Cre-lox system.
- Analyzed tumor progression, immune cell infiltration, and cytokine profiles.
Main Results:
- Fibroblast-specific deletion of collagen I did not inhibit, but rather accelerated, PDAC progression.
- Loss of collagen I in fibroblasts led to enhanced immune suppression within the tumor microenvironment.
- Specific alterations in immune cell populations and signaling pathways were observed.
Conclusions:
- Collagen I in cancer-associated fibroblasts plays a complex role in PDAC, potentially contributing to tumor restraint.
- Targeting collagen I in PDAC may inadvertently promote disease progression and immune evasion.
- Further research is needed to understand the nuanced functions of stromal components in pancreatic cancer.
