Furin-like enzyme dependency in KRAS-mutant colorectal cancer as a target for personalized treatment strategies
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Updated: May 31, 2026

Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies
Published on: September 30, 2016
Geraldine Siegfried1, Yiyang Liu2, Zongcheng He3
1University of Bordeaux, Bordeaux Institute of Oncology (BRIC)-UMR1312, Bordeaux, France.
Abstract:
Increasing efforts have focused on identifying vulnerabilities within the signaling networks of KRAS that sustain its oncogenic activity. Recently, Furin-like enzymes or proprotein convertase, proteases responsible for the activation of various signaling molecules, have emerged as key regulators. Furin, modulate KRAS-related signaling by processing growth factors, cytokines, and receptor tyrosine kinases (RTKs). Repression of Furin selectively impairs the proliferation and survival of KRAS-mutant colorectal cancer cells compared with wild-type KRAS cells. Furin inhibition disrupts various RTK maturation, attenuates downstream signaling, and remodels the tumour microenvironment toward an immune-stimulatory phenotype. Furin inhibition also repress KRAS-mutant-mediated resistance by blocking the maturation of multiple escape pathways, including compensatory RTK activation. This review summarizes current evidence on the crosstalk between KRAS signaling and Furin-like enzymes, emphasizing their cooperative roles in tumour progression and immune escape. Targeting protein maturation by these enzymes may therefore represent a therapeutic approach for KRAS-mutant colorectal cancer, offering new opportunities for personalized treatment.
Insights
Furin-like enzymes regulate KRAS signaling in colorectal cancer. Inhibiting Furin selectively harms KRAS-mutant cancer cells, offering a potential therapeutic strategy for this disease.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Signaling
Background:
- KRAS signaling pathways are critical for oncogenic activity in various cancers.
- Furin-like enzymes (proprotein convertases) are proteases involved in activating signaling molecules.
- Furin processes growth factors, cytokines, and receptor tyrosine kinases (RTKs), influencing KRAS signaling.
Purpose of the Study:
- To review the crosstalk between KRAS signaling and Furin-like enzymes in cancer progression.
- To highlight the role of Furin in KRAS-mutant colorectal cancer.
- To explore therapeutic strategies targeting Furin for KRAS-mutant colorectal cancer.
Main Methods:
- Literature review summarizing current evidence on KRAS-Furin interactions.
- Analysis of Furin's role in processing growth factors, cytokines, and RTKs.
- Examination of Furin inhibition effects on KRAS-mutant cancer cell proliferation and survival.
Main Results:
- Furin inhibition selectively impairs KRAS-mutant colorectal cancer cell proliferation and survival.
- Furin inhibition disrupts RTK maturation, attenuates downstream signaling, and promotes an immune-stimulatory tumor microenvironment.
- Furin inhibition blocks maturation of escape pathways, including compensatory RTK activation, repressing KRAS-mutant-mediated resistance.
Conclusions:
- Furin-like enzymes are key regulators of KRAS signaling and tumor progression.
- Targeting Furin represents a promising therapeutic approach for KRAS-mutant colorectal cancer.
- Furin inhibition offers potential for personalized treatment strategies by disrupting oncogenic signaling and immune escape mechanisms.
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