Expression of glucagon-like peptide 1 receptor in a murine C cell line: Regulation of calcitonin gene by glucagon-like peptide 1

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Abstract

We have characterized, by RT-PCR amplification using specific primers, the presence of glucagon-like peptide-1 (GLP-1) receptor mRNA in CA-77 cells, a C cell line derived from a rat medullary thyroid carcinoma. Down-regulation of the GLP-1 receptor mRNA was observed after exposure of CA-77 C cells with GLP-1 (7-37). Increased secretion of both calcitonin gene-related peptide (CGRP) and calcitonin (CT) occurred after treatment with GLP-1 (7-37) associated with elevated steady-state levels of CGRP and CT mRNA, GLP-1 (7-37) increased cAMP formation in CA-77 cells in a dose-dependent manner; exendin (9-39), a GLP-1 receptor antagonist, inhibited cAMP production. The GLP-1 peptide which is produced by intestinal cells could be involved in the control of CT secretion through an entero-thyroidal axis implying GLP-1 receptor and increased CT gene expression.

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APA

Lamari, Y., Boissard, C., Moukhtar, M. S., Jullienne, A., Rosselin, G., & Garel, J. M. (1996). Expression of glucagon-like peptide 1 receptor in a murine C cell line: Regulation of calcitonin gene by glucagon-like peptide 1. FEBS Letters, 393(2–3), 248–252. https://doi.org/10.1016/0014-5793(96)00895-2

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