Glucose-dependent insulinotropic polypeptide stimulated insulin release from a tumor-derived beta-cell line (beta TC3).

Abstract

The beta TC3 tumor cell line was examined for the presence of functional glucose-dependent insulinotropic polypeptide (GIP) receptors. Increasing amounts of natural porcine GIP decreased the binding of HPLC-purified [125I]GIP to beta TC3 cells in a concentration-dependent manner. Displacement of GIP was significant at concentrations as low as 500 pM, and… (More)

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