Cited by 262Pancreatic function and diabetesCircadian rhythm and melatoninDiabetes and associated disorders

Increased melatonin signaling is a risk factor for type 2 diabetes

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Tuomi, Tiinamaija, Nagorny, Cecilia L.F., Singh, Pratibha, Bennet, Hedvig, Yu, Qian, Alenkvist, Ida, Isomaa, Bo, Östman, Bjarne +16 more·2016·Cell Metabolism

Abstract

Type 2 diabetes (T2D) is a global pandemic. Genome-wide association studies (GWASs) have identified >100 genetic variants associated with the disease, including a common variant in the melatonin receptor 1 b gene (MTNR1B). Here, we demonstrate increased MTNR1B expression in human islets from risk G-allele carriers, which likely leads to a reduction in insulin release, increasing T2D risk. Accordingly, in insulin-secreting cells, melatonin reduced cAMP levels, and MTNR1B overexpression exaggerated the inhibition of insulin release exerted by melatonin. Conversely, mice with a disruption of the receptor secreted more insulin. Melatonin treatment in a human recall-by-genotype study reduced insulin secretion and raised glucose levels more extensively in risk G-allele carriers. Thus, our data support a model where enhanced melatonin signaling in islets reduces insulin secretion, leading to hyperglycemia and greater future risk of T2D. The findings also imply that melatonin physiologically serves to inhibit nocturnal insulin release.

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Authors
Tuomi, T., Nagorny, C. L. F., Singh, P., Bennet, H., Yu, Q., Alenkvist, I., Isomaa, B., Östman, B., Söderström, J., Pesonen, A.-K., Martikainen, S., Räikkönen, K., Forsén, T., Hakaste, L., Almgren, P., Storm, P., Asplund, O., Shcherbina, L., Fex, M., Fadista, J., Tengholm, A., Wierup, N., Groop, L., & Mulder, H.
Affiliations
  • Lund University (SE)
  • Uppsala University (SE)
  • University of Helsinki (FI)
  • Folkhälsans Forskningscentrum (FI)
Corresponding author
Mulder, Hindrik
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2016-06
Volume
23
Issue
6
Pages
1067-1077
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2367683267
Cited by
262
References
44
Citations by year
2026: 17 · 2025: 27 · 2024: 20 · 2023: 17 · 2022: 17 · 2021: 28 · 2020: 29 · 2019: 27 · 2018: 36 · 2017: 30 · 2016: 13
FWCI
39.12
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion, other-oa)
  • Työväentutkimus Vuosikirja (submittedVersion, other-oa)
Funders
  • Helsingin ja Uudenmaan Sairaanhoitopiiri
  • Finska Läkaresällskapet
  • Folkhälsanin Tutkimussäätiö
  • European Foundation for the Study of Diabetes
  • Lunds Universitet (2009-1039)
  • Novo Nordisk
  • Signe ja Ane Gyllenbergin Säätiö
  • Vetenskapsrådet (349-2006-237, 325‐2012‐6778, 2010-03490, 521-2012-2119, 2006–237, 2009-1039, 521-2010-3490)
  • Samfundet Folkhälsan
  • Sigrid Juséliuksen Säätiö
  • Svenska Kulturfonden
  • Paavo Nurmen Säätiö
  • Novo Nordisk Fonden (NNF14OC0010995, NNF14OC0010363)
  • Diabetestutkimussäätiö
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
type 2 diabetes, melatonin signaling, MTNR1B, insulin secretion, pancreatic islets, cyclic AMP, genetic risk variants, hyperglycemia, melatonin treatment
MeSH terms
Insulin Secretion, Cyclic AMP, Animals, Diabetes Mellitus, Type 2, Glucose, Heterozygote, Humans, Insulin, Melatonin, Risk Factors, Signal Transduction, Mice, Knockout, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Quantitative Trait Loci, Receptors, Melatonin, Insulin-Secreting Cells

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