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The Non-Competitive Metabotropic Glutamate receptor-1 Antagonist CPCCOEt Inhibits the in Vitro Growth of Human Melanoma

The Non-Competitive Metabotropic Glutamate receptor-1 Antagonist CPCCOEt Inhibits the in Vitro Growth of Human Melanoma

Helga Susanne Haas, Roswitha Pfragner, Veronika Siegl, Elisabeth Ingolic, Elfgard Heintz, Elisabeth Schraml, Konrad Schauenstein

Oncol Rep. 2007 Jun;17(6):1399-404.

PMID: 17487397

Abstract:

Five decades ago, the dicarboxylic amino acid glutamate became recognized as the major excitatory neurotransmitter in the central nervous system. In recent years, the expression of glutamate receptors was detected also in peripheral, non-neuronal tissues. Furthermore, it was found that glutamate stimulated the proliferation and migration of several peripheral tumor cells, and that glutamate receptor antagonists limited tumor growth. Most of these studies, however, used broad spectrum compounds and/or group-specific antagonists. Here we report that a selective, non-competitive metabotropic glutamate receptor-1 antagonist, CPCCOEt (7-hydroxyiminocyclopropan[b]chromen-1a-carboxylic acid ethyl ester), significantly inhibited the proliferation and modified the morphology of two human melanoma cell lines. These effects were independent of the external glutamate level in the culture medium. In addition, CPCCOEt significantly enhanced the tumoricidal effects of cytostatic drugs. Thus, selective non-competitive metabotropic glutamate receptor antagonists may be used alone and/or with the synergistic effects of chemotherapy, thus enhancing existing therapies of melanoma and possibly other malignancies.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP179067993	CPCCOEt		179067-99-3	Price

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