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Citation
Alfa, R.W., Park, S., Skelly, K.R., Poffenberger, G., Jain, N., Gu, X., Kockel, L., Wang, J., Liu, Y., Powers, A.C., Kim, S.K. (2015). Suppression of insulin production and secretion by a decretin hormone.  Cell Metab. 21(2): 323--333.
FlyBase ID
FBrf0227467
Publication Type
Research paper
Abstract

Decretins, hormones induced by fasting that suppress insulin production and secretion, have been postulated from classical human metabolic studies. From genetic screens, we identified Drosophila Limostatin (Lst), a peptide hormone that suppresses insulin secretion. Lst is induced by nutrient restriction in gut-associated endocrine cells. limostatin deficiency led to hyperinsulinemia, hypoglycemia, and excess adiposity. A conserved 15-residue polypeptide encoded by limostatin suppressed secretion by insulin-producing cells. Targeted knockdown of CG9918, a Drosophila ortholog of Neuromedin U receptors (NMURs), in insulin-producing cells phenocopied limostatin deficiency and attenuated insulin suppression by purified Lst, suggesting CG9918 encodes an Lst receptor. NMUR1 is expressed in islet β cells, and purified NMU suppresses insulin secretion from human islets. A human mutant NMU variant that co-segregates with familial early-onset obesity and hyperinsulinemia fails to suppress insulin secretion. We propose Lst as an index member of an ancient hormone class called decretins, which suppress insulin output.

Graphical Abstract
Obtained with permission from Cell Press.
PubMed ID
PubMed Central ID
PMC4349554 (PMC) (EuropePMC)
Related Publication(s)
Note

Finding the decretin hormone.
Gough, 2015, Sci. Signal. 8(363): ec29 [FBrf0234911]

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Secondary IDs
    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Cell Metab.
    Title
    Cell Metabolism
    Publication Year
    2005-
    ISBN/ISSN
    1550-4131
    Data From Reference