Acute exposure to 3‑deoxyglucosone at high glucose levels impairs insulin secretion from β‑cells by downregulating the sweet taste receptor signaling pathway

  • Authors:
    • Xiudao Song
    • Guoqiang Liang
    • Min Shi
    • Liang Zhou
    • Fei Wang
    • Lurong Zhang
    • Fei Huang
    • Guorong Jiang
  • View Affiliations

  • Published online on: April 15, 2019     https://doi.org/10.3892/mmr.2019.10163
  • Pages: 5015-5022
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Sweet taste receptors (STRs) expressed on β‑cells stimulate insulin secretion in response to an increase in the circulating level of glucose, maintaining glucose homeostasis. 3‑Deoxyglucosone (3DG), a highly reactive α‑dicarbonyl compound, has been previously described as an independent factor associate with the development of prediabetes. In our previous study, pathological plasma levels of 3DG were induced in normal rats with a single intravenous injection of 50 mg/kg 3DG, and an acute rise in circulating 3DG induced glucose intolerance by impairing the function of pancreatic β‑cells. The present study aimed to investigate whether the deleterious effects of pathological plasma levels of 3DG on β‑cell function and insulin secretion were associated with STRs. INS‑1 cells, an in vitro model to study rat β‑cells, were treated with various concentrations of 3DG (1.85, 30.84 and 61.68 mM) or lactisole (5 mM). Pancreatic islets were collected from rats 2 h after a single intravenous injection of 50 mg/kg 3DG + 0.5 g/kg glucose. The insulin concentration was measured by ELISA. The protein expression levels of components of the STR signaling pathways were determined by western blot analysis. Treatment with 3DG and 25.5 mM glucose for 1 h significantly reduced insulin secretion by INS‑1 cells, which was consistent with the phenotype observed in INS‑1 cells treated with the STR inhibitor lactisole. Accordingly, islets isolated from rats treated with 3DG exhibited a significant reduction in insulin secretion following treatment with 25.5 mM glucose. Furthermore, acute exposure of INS‑1 cells to 3DG following treatment with 25.5 mM glucose for 1 h significantly reduced the protein expression level of the STR subunit taste 1 receptor member 3 and its downstream factors, transient receptor potential cation channel subfamily M member 5 and glucose transporter 2. Notably, islet tissues collected from rats treated with 3DG exhibited a similar downregulation of these factors. The present results suggested that acute exposure to pathologically relevant levels of 3DG in presence of high physiological levels of glucose decreased insulin secretion from β‑cells by, at least in part, downregulating the STR signaling pathway.
View Figures
View References

Related Articles

Journal Cover

June-2019
Volume 19 Issue 6

Print ISSN: 1791-2997
Online ISSN:1791-3004

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Song X, Liang G, Shi M, Zhou L, Wang F, Zhang L, Huang F and Jiang G: Acute exposure to 3‑deoxyglucosone at high glucose levels impairs insulin secretion from β‑cells by downregulating the sweet taste receptor signaling pathway. Mol Med Rep 19: 5015-5022, 2019
APA
Song, X., Liang, G., Shi, M., Zhou, L., Wang, F., Zhang, L. ... Jiang, G. (2019). Acute exposure to 3‑deoxyglucosone at high glucose levels impairs insulin secretion from β‑cells by downregulating the sweet taste receptor signaling pathway. Molecular Medicine Reports, 19, 5015-5022. https://doi.org/10.3892/mmr.2019.10163
MLA
Song, X., Liang, G., Shi, M., Zhou, L., Wang, F., Zhang, L., Huang, F., Jiang, G."Acute exposure to 3‑deoxyglucosone at high glucose levels impairs insulin secretion from β‑cells by downregulating the sweet taste receptor signaling pathway". Molecular Medicine Reports 19.6 (2019): 5015-5022.
Chicago
Song, X., Liang, G., Shi, M., Zhou, L., Wang, F., Zhang, L., Huang, F., Jiang, G."Acute exposure to 3‑deoxyglucosone at high glucose levels impairs insulin secretion from β‑cells by downregulating the sweet taste receptor signaling pathway". Molecular Medicine Reports 19, no. 6 (2019): 5015-5022. https://doi.org/10.3892/mmr.2019.10163