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Spheroid Assay to Measure TGF-β-induced Invasion
Published on: November 16, 2011
Antiglioma effects of a new, low molecular mass, inhibitor of fibroblast growth factor
Pedro Cuevas1, Fernando Carceller, Javier Angulo
1Servicio de Histología, IRYCIS, E-28034 Madrid, Spain. pedro.cuevas@hrc.es
Abstract:
Despite the deployment of multimodal therapies involving neurosurgical resection, radio- and polychemotherapy, the prognosis for glioblastoma patients remains poor. These tumors are pathologically characterized by their associated angiogenesis and diffuse brain invasion, processes that are probably closely linked to the unfavorable prognosis of this disease. Accordingly, pharmacological inhibition of glioblastoma invasion and approaches that impede angiogenesis are considered to be promising therapeutic strategies to combat these tumors. Nevertheless, the anti-angiogenic therapies for glioblastoma currently available are transient and palliative at best. Blocking the effects of fibroblast growth factor (FGF) may represent a novel mean of inhibiting the angiogenesis associated with glioblastoma, as it mediates the angiogenesis induced by other factors and it is an angiogenic factor by itself. In addition, the survival of glioma cells and their resistance to chemotherapeutic agents are highly FGF-dependent. We show here that a recently described inhibitor of FGF, 2,5-dihydroxyphenyl-sulfonate (2,5DHPS, dobesilate), stimulates the apoptosis of tumor cells, inhibits glioblastoma invasion and suppresses its associated angiogenesis. Moreover, this agent augments the efficiency of chemotherapeutic agents in a rat model of orthotopic brain tumor. These results suggest that 2,5DHPS treatment may represent a promising therapy for malignant glioma.
Insights
A novel fibroblast growth factor (FGF) inhibitor, 2,5-dihydroxyphenyl-sulfonate (2,5DHPS), shows promise for treating malignant glioma. This agent stimulates tumor cell death, reduces invasion, and inhibits angiogenesis, improving chemotherapy efficacy.
Area of Science:
- Oncology
- Neuro-oncology
- Pharmacology
Background:
- Glioblastoma prognosis remains poor despite multimodal therapies.
- Tumor angiogenesis and invasion are key factors in glioblastoma's poor outcome.
- Current anti-angiogenic therapies offer limited, palliative benefits.
Purpose of the Study:
- To investigate the potential of fibroblast growth factor (FGF) inhibition as a therapeutic strategy for glioblastoma.
- To evaluate the efficacy of 2,5-dihydroxyphenyl-sulfonate (2,5DHPS), an FGF inhibitor, in preclinical glioblastoma models.
Main Methods:
- Assessment of 2,5DHPS effects on glioblastoma cell apoptosis and invasion.
- Evaluation of 2,5DHPS's impact on tumor-associated angiogenesis.
- Testing 2,5DHPS in combination with chemotherapy in an orthotopic rat brain tumor model.
Main Results:
- 2,5DHPS stimulated glioblastoma cell apoptosis.
- 2,5DHPS inhibited glioblastoma cell invasion and suppressed tumor angiogenesis.
- Combined 2,5DHPS and chemotherapy treatment augmented therapeutic efficacy in vivo.
Conclusions:
- FGF inhibition via 2,5DHPS presents a promising therapeutic avenue for malignant glioma.
- 2,5DHPS demonstrates multifaceted anti-tumor activity, including direct cytotoxicity and anti-angiogenic effects.
- 2,5DHPS enhances chemotherapy effectiveness, suggesting its potential as an adjuvant therapy.
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