- Jacobson DA, Cho J, Landa LR, Tamarina NA, Roe MW, Buxbaum JD, Philipson LH. Downstream regulatory element antagonistic modulator regulates islet prodynorphin expression. American journal of physiology. Endocrinology and metabolism. 2006 Sep;291(3). E587-95. PMID: 16621893 [PubMed].
Calcium-binding proteins regulate transcription and secretion of pancreatic islet hormones. Here, we demonstrate neuroendocrine expression of the calcium-binding downstream regulatory element antagonistic modulator (DREAM) and its role in glucose-dependent regulation of prodynorphin (PDN) expression. DREAM is distributed throughout beta- and alpha-cells in both the nucleus and cytoplasm. As DREAM regulates neuronal dynorphin expression, we determined whether this pathway is affected in DREAM(-/-) islets. Under low glucose conditions, with intracellular calcium concentrations of