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Updated: May 13, 2026

Experimental Metastasis Assay
Published on: August 24, 2010
CTGF is a therapeutic target for metastatic melanoma
E C Finger1, C-F Cheng1, T R Williams1
1Division of Radiation and Cancer Biology, Department of Radiation Oncology, Stanford University, Stanford, CA, USA.
Abstract:
Metastatic melanoma remains a devastating disease with a 5-year survival rate of less than five percent. Despite recent advances in targeted therapies for melanoma, only a small percentage of melanoma patients experience durable remissions. Therefore, it is critical to identify new therapies for the treatment of advanced melanoma. Here, we define connective tissue growth factor (CTGF) as a therapeutic target for metastatic melanoma. Clinically, CTGF expression correlates with tumor progression and is strongly induced by hypoxia through HIF-1 and HIF-2-dependent mechanisms. Genetic inhibition of CTGF in human melanoma cells is sufficient to significantly reduce orthotopic tumor growth, as well as metastatic tumor growth in the lung of severe combined immunodeficient (SCID) mice. Mechanistically, inhibition of CTGF decreased invasion and migration associated with reduced matrix metalloproteinase-9 expression. Most importantly, the anti-CTGF antibody, FG-3019, had a profound inhibitory effect on the progression of established metastatic melanoma. These results offer the first preclinical validation of anti-CTGF therapy for the treatment of advanced melanoma and underscore the importance of tumor hypoxia in melanoma progression.
Insights
Connective tissue growth factor (CTGF) is a promising therapeutic target for metastatic melanoma. Inhibiting CTGF significantly reduced tumor growth and metastasis in preclinical models, validating anti-CTGF therapy.
Area of Science:
- Oncology
- Cancer Biology
- Molecular Medicine
Background:
- Metastatic melanoma has a poor prognosis, with limited durable responses to current targeted therapies.
- There is a critical need for novel therapeutic strategies to treat advanced melanoma.
- Connective tissue growth factor (CTGF) is implicated in tumor progression.
Purpose of the Study:
- To investigate connective tissue growth factor (CTGF) as a potential therapeutic target for metastatic melanoma.
- To evaluate the efficacy of inhibiting CTGF in preclinical models of melanoma.
Main Methods:
- Assessed CTGF expression correlation with tumor progression and hypoxia-induced mechanisms (HIF-1, HIF-2).
- Utilized genetic inhibition of CTGF in human melanoma cells in vitro and in vivo (SCID mice).
- Administered anti-CTGF antibody (FG-3019) to established metastatic melanoma models.
Main Results:
- CTGF expression correlated with melanoma progression and was induced by hypoxia.
- Genetic CTGF inhibition significantly reduced orthotopic and lung metastatic tumor growth in mice.
- CTGF inhibition decreased melanoma cell invasion and migration, linked to reduced matrix metalloproteinase-9 (MMP-9).
- The anti-CTGF antibody FG-3019 profoundly inhibited the progression of established metastatic melanoma.
Conclusions:
- CTGF is a validated therapeutic target for metastatic melanoma.
- Targeting CTGF, particularly with antibodies like FG-3019, shows significant preclinical efficacy.
- Tumor hypoxia plays a crucial role in melanoma progression, mediated partly by CTGF.
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