Fight the Cancer, Hit the CAF!

Area of Science:

• Oncology
• Immunology
• Cell Biology

Background:

• The tumor microenvironment (TME) comprises diverse cellular components, including immune and stromal cells, that drive tumor progression and metastasis.
• Cancer-Associated Fibroblasts (CAF), a major stromal component, significantly impact immune responses and extracellular matrix composition, affecting therapeutic outcomes.
• Recent single-cell analyses highlight CAF heterogeneity and plasticity, underscoring their complex role in the TME.

Purpose of the Study:

• To review the characterization of CAF based on recent findings.
• To elucidate the impact of CAF on the immune system and their role in cancer.
• To discuss the controversial results from clinical and preclinical studies targeting CAF.

Main Methods:

• Literature review of recent publications on CAF.
• Analysis of single-cell studies to understand CAF heterogeneity.
• Examination of clinical trials and preclinical studies involving CAF-targeting therapies.

Main Results:

• CAF heterogeneity and plasticity significantly influence the TME.
• CAF modulate immune responses and extracellular matrix, impacting therapy effectiveness.
• Targeting CAF in clinical and preclinical studies has yielded controversial results.

Conclusions:

• Further research is needed to understand the functional properties of individual CAF subtypes.
• Considering the specific pathological context is essential for effective CAF-targeting strategies.
• Deciphering CAF heterogeneity is critical for advancing cancer immunotherapy and chemotherapy.