ArticleInternational journal of molecular sciences2024
Nutrient Combinations Sensed by L-Cell Receptors Potentiate GLP-1 Secretion.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Foods as Modulators of GLP-1 Secretion.Nutrients · 2026Review
- Osteocalcin Beyond Bone: Molecular Mechanisms, Endocrine Networks, and Translational Perspectives Across Metabolism, Neurobiology, and Chronic Disease.International journal of molecular sciences · 2026Review
- Impact of GLP-1 receptor agonists on cranial nerve palsies in type 2 diabetes: a retrospective cohort study.Journal of neurology · 2025Article
- Huanglian-Renshen-Decoction Maintains Islet β-Cell Identity in T2DM Mice through Regulating GLP-1 and GLP-1R in Both Islet and Intestine.Chinese journal of integrative medicine · 2025Article
- Effect of hypoxia on GLP-1 secretion - an in vitro study using enteroendocrine STC-1 -cells as a model.Pflugers Archiv : European journal of physiology · 2024Article
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Authors and funding
8 authors at 3 institutions in 2 countries.
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Abstract
Obesity is a risk factor for cardiometabolic diseases. Nutrients stimulate GLP-1 release; however, GLP-1 has a short half-life (<2 min), and only <10-15% reaches the systemic circulation. Human L-cells are localized in the distal ileum and colon, while most nutrients are absorbed in the proximal intestine. We hypothesized that combinations of amino acids and fatty acids potentiate GLP-1 release via different L-cell receptors. GLP-1 secretion was studied in the mouse enteroendocrine STC-1 cells. Cells were pre-incubated with buffer for 1 h and treated with nutrients: alpha-linolenic acid (αLA), phenylalanine (Phe), tryptophan (Trp), and their combinations αLA+Phe and αLA+Trp with dipeptidyl peptidase-4 (DPP4) inhibitor. After 1 h GLP-1 in supernatants was measured and cell lysates taken for qPCR. αLA (12.5 µM) significantly stimulated GLP-1 secretion compared with the control. Phe (6.25-25 mM) and Trp (2.5-10 mM) showed a clear dose response for GLP-1 secretion. The combination of αLA (6.25 µM) and either Phe (12.5 mM) or Trp (5 mM) significantly increased GLP-1 secretion compared with αLA, Phe, or Trp individually. The combination of αLA and Trp upregulated GPR120 expression and potentiated GLP-1 secretion. These nutrient combinations could be used in sustained-delivery formulations to the colon to prolong GLP-1 release for diminishing appetite and preventing obesity.
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