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This study investigates the mechanism by which interferon alpha inhibits angiogenesis in neuroendocrine tumors.

Effects of Interferon Alpha on Vascular Endothelial Growth Factor Gene Transcription and Tumor Angiogenesis

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This study investigates the mechanism by which interferon alpha inhibits angiogenesis in neuroendocrine tumors.
Analyzed VEGF gene and protein expression in neuroendocrine tumors and cell lines using multiple assays.
Employed a xenograft nude mouse model to assess the impact of IFN-alpha on tumor growth and microvessel density.
Evaluated liver metastases from patients for changes in VEGF levels before and after IFN-alpha therapy.
IFN-alpha reduced VEGF gene transcription in cell lines through Sp1- and/or Sp3-dependent mechanisms.
In mice, IFN-alpha suppressed tumor growth by 36% and decreased microvessel density from 56 to 37 per x400 Field (P = 0.015).
Patients exhibited lower VEGF plasma levels and reduced microvessel density after IFN-alpha treatment.

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Randomized trial demonstrates decreased angiogenesis in neuroendocrine tumors, indicating therapeutic potential for IFN-alpha.

Marschall et al. (2003) studied this question.

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