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Updated: Jun 6, 2026

A Mouse Model to Investigate the Role of Cancer-Associated Fibroblasts in Tumor Growth
Published on: December 22, 2020
Emerging agents that target signaling pathways in cancer fibroblast cells (Review)
Yan Wan1, Xiang-Qing Liu1, Dong Liu2
1School of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, Anhui 241000, P.R. China.
Abstract:
Cancer‑associated fibroblasts (CAFs) play a critical role in cancer development, recurrence and metastasis. Several signaling pathways are crucial in CAF development, including fibroblast activation protein (FAP), phosphoinositide 3‑kinase (PI3K)/protein kinase B (AKT)/mechanistic target of rapamycin (mTOR), Janus kinase/signal transducers and activators of transcription (JAK/STAT), nuclear factor κB (NF‑κB), transforming growth factor β (TGF‑β), ferroptosis, apoptosis and autophagy pathways. Targeting the ferroptosis signaling pathway specifically kills CAFs. Therefore, targeting these pathways may inhibit the protumorigenic functions of CAFs. Small molecule drugs, due to their well‑dispersed spatial structures and distinct chemical properties, exhibit promising druggability and pharmacokinetic profiles. These characteristics make small molecule drugs highly advantageous in drug development and increasingly favored in the market. The present review summarized current studies on small molecule compounds that inhibit CAF progression, encompassing inhibitors of the PI3K/AKT/mTOR, JAK/STAT, TGF‑β and NF‑κB pathways, as well as activators of the FAP, ferroptosis, apoptosis and autophagy pathways. These small molecule compounds underscore the significance of CAFs in tumor progression and suggest novel strategies for cancer treatment by targeting CAFs in clinical settings.
Insights
Small molecule drugs targeting cancer-associated fibroblast (CAF) pathways like PI3K/AKT/mTOR and ferroptosis show promise. These compounds inhibit CAF progression, offering novel cancer treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Cancer-associated fibroblasts (CAFs) are key drivers of tumor development, recurrence, and metastasis.
- Multiple signaling pathways, including PI3K/AKT/mTOR, JAK/STAT, and TGF-β, regulate CAF functions.
- Targeting specific pathways, such as ferroptosis, offers a direct approach to eliminate CAFs.
Purpose of the Study:
- To review current research on small molecule compounds that inhibit CAF progression.
- To highlight the role of various signaling pathways in CAF development and function.
- To explore novel therapeutic strategies targeting CAFs in cancer treatment.
Main Methods:
- Review of existing literature on small molecule inhibitors and activators of CAF-related pathways.
- Analysis of signaling pathways including PI3K/AKT/mTOR, JAK/STAT, TGF-β, NF-κB, FAP, ferroptosis, apoptosis, and autophagy.
- Evaluation of the druggability and pharmacokinetic profiles of small molecule compounds.
Main Results:
- Small molecule drugs targeting PI3K/AKT/mTOR, JAK/STAT, TGF-β, and NF-κB pathways can inhibit CAF progression.
- Activators of FAP, ferroptosis, apoptosis, and autophagy pathways demonstrate potential in targeting CAFs.
- Small molecules possess favorable druggability and pharmacokinetic properties for cancer therapy.
Conclusions:
- Targeting CAFs via small molecule inhibitors or activators of key signaling pathways presents a promising therapeutic strategy.
- These compounds underscore the critical role of CAFs in tumor progression.
- Further clinical investigation of small molecule-based CAF-targeting therapies is warranted.
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