PUBLICATION
Ca2+-Dependent Glucose Transport in Skeletal Muscle by Diphlorethohydroxycarmalol, an Alga Phlorotannin: In Vitro and In Vivo Study
- Authors
- Yang, H.W., Jiang, Y.F., Lee, H.G., Jeon, Y.J., Ryu, B.
- ID
- ZDB-PUB-210226-5
- Date
- 2021
- Source
- Oxidative medicine and cellular longevity 2021: 8893679 (Journal)
- Registered Authors
- Jeon, You-Jin
- Keywords
- none
- MeSH Terms
-
- Animals
- Biological Transport/drug effects
- Blood Glucose/metabolism
- Calcium/metabolism*
- Cell Line
- Cell Survival/drug effects
- Cytosol/metabolism
- Glucose/metabolism*
- Glucose Transporter Type 4/metabolism
- Heterocyclic Compounds, 3-Ring/pharmacology*
- Heterocyclic Compounds, 3-Ring/toxicity
- Larva/drug effects
- Larva/metabolism
- Muscle Contraction/drug effects
- Muscle Fibers, Skeletal/drug effects
- Muscle Fibers, Skeletal/metabolism
- Muscle, Skeletal/metabolism*
- Phaeophyceae/chemistry*
- Signal Transduction/drug effects
- Zebrafish
- PubMed
- 33628395 Full text @ Oxid Med Cell Longev
Citation
Yang, H.W., Jiang, Y.F., Lee, H.G., Jeon, Y.J., Ryu, B. (2021) Ca2+-Dependent Glucose Transport in Skeletal Muscle by Diphlorethohydroxycarmalol, an Alga Phlorotannin: In Vitro and In Vivo Study. Oxidative medicine and cellular longevity. 2021:8893679.
Abstract
Diphlorethohydroxycarmalol (DPHC), a type of phlorotannin isolated from the marine alga Ishige okamurae, reportedly alleviates impaired glucose tolerance. However, the molecular mechanisms of DPHC regulatory activity and by which it exerts potential beneficial effects on glucose transport into skeletal myotubes to control glucose homeostasis remain largely unexplored. The aim of this study was to evaluate the effect of DPHC on cytosolic Ca2+ levels and its correlation with blood glucose transport in skeletal myotubes in vitro and in vivo. Cytosolic Ca2+ levels upon DPHC treatment were evaluated in skeletal myotubes and zebrafish larvae by Ca2+ imaging using Fluo-4. We investigated the effect of DPHC on the blood glucose level and glucose transport pathway in a hyperglycemic zebrafish. DPHC was shown to control blood glucose levels by accelerating glucose transport; this effect was associated with elevated cytosolic Ca2+ levels in skeletal myotubes. Moreover, the increased cytosolic Ca2+ level caused by DPHC can facilitate the Glut4/AMPK pathways of the skeletal muscle in activating glucose metabolism, thereby regulating muscle contraction through the regulation of expression of troponin I/C, CaMKII, and ATP. Our findings provide insights into the mechanism of DPHC activity in skeletal myotubes, suggesting that increased cytosolic Ca2+ levels caused by DPHC can promote glucose transport into skeletal myotubes to modulate blood glucose levels, thus indicating the potential use of DPHC in the prevention of diabetes.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping