New functions of DDR1 collagen receptor in tumor dormancy, immune exclusion and therapeutic resistance

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• The tumor microenvironment, particularly collagen architecture, drives cancer progression and therapeutic resistance.
• Mechanisms by which tumor cells sense and respond to the extracellular matrix are poorly understood.
• Discoidin Domain Receptor 1 (DDR1), a collagen receptor tyrosine kinase, is implicated in cancer, but its signaling pathways are unclear.

Purpose of the Study:

• To review the emerging roles of DDR1 in cancer progression, dormancy, immune exclusion, and therapeutic resistance.
• To discuss the signaling mechanisms underlying DDR1's functions in response to stromal collagens.
• To explore therapeutic strategies targeting collagen-dependent tumor responses mediated by DDR1.

Main Methods:

• Literature review of recent studies on DDR1 signaling in cancer.
• Analysis of the interplay between tumor cells, stromal collagens, and DDR1.
• Discussion of preclinical and clinical data on targeting DDR1 and collagen.

Main Results:

• DDR1 plays critical roles in tumor dormancy after dissemination.
• DDR1 signaling contributes to immune exclusion within the tumor microenvironment.
• Stromal collagen deposition mediated by DDR1 enhances therapeutic resistance.

Conclusions:

• DDR1 is a key mediator of cancer progression and treatment resistance through interactions with tumor collagens.
• Understanding DDR1 signaling pathways is crucial for developing effective cancer therapies.
• Targeting collagen-DDR1 interactions presents a promising therapeutic avenue.