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Updated: May 6, 2026

A Murine Pancreatic Islet Cell-based Screening for Diabetogenic Environmental Chemicals
Published on: June 25, 2018
Effects of mulberry ethanol extracts on hydrogen peroxide-induced oxidative stress in pancreatic β-cells
Young Rae Kim1, Jong Seok Lee, Ki Rim Lee
1Department of Bioengineering and Technology, Kangwon National University, Chuncheon, Kangwon‑do 200‑701, Republic of Korea.
Abstract:
Reactive oxygen species (ROS) are key mediators of mammalian cellular damage and are associated with diseases such as aging, arteriosclerosis, inflammation, rheumatoid arthritis and diabetes. Type 1 diabetes develops upon the destruction of pancreatic β-cells, which is partly due to ROS activity. In this study, we investigated the cytoprotective and anti-oxidative effects of fractionated mulberry extracts in mouse insulin-producing pancreatic β-cells (MIN6N cells). Treatment with hydrogen peroxide (H2O2) induced significant cell death and increased intracellular ROS levels, lipid peroxidation and DNA fragmentation in the MIN6N cells. Fractionated mulberry extracts significantly reduced the H2O2-dependent production of intracellular ROS, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and lipid peroxidation. In addition, mulberry extracts inhibited DNA fragmentation induced by H2O2. Thus, the antioxidant properties of mulberry extracts in pancreatic β-cells may be exploited for the prevention or treatment of type 1 diabetes.
Insights
Mulberry extracts demonstrate significant antioxidant and cytoprotective effects in pancreatic beta cells. These findings suggest mulberry
Area of Science:
- Oxidative stress and cellular damage
- Diabetes research
- Natural product therapeutics
Background:
- Reactive oxygen species (ROS) are implicated in cellular damage and diseases like type 1 diabetes.
- Type 1 diabetes involves the destruction of pancreatic beta cells, partly due to ROS activity.
Purpose of the Study:
- To investigate the cytoprotective and antioxidant effects of fractionated mulberry extracts.
- To assess the impact of mulberry extracts on mouse insulin-producing pancreatic beta cells (MIN6N cells) under oxidative stress.
Main Methods:
- MIN6N cells were treated with hydrogen peroxide (H2O2) to induce oxidative stress.
- The effects of fractionated mulberry extracts on cell death, intracellular ROS, DPPH radical scavenging, lipid peroxidation, and DNA fragmentation were evaluated.
Main Results:
- Hydrogen peroxide (H2O2) treatment caused significant cell death, increased ROS, lipid peroxidation, and DNA fragmentation in MIN6N cells.
- Fractionated mulberry extracts markedly reduced H2O2-induced intracellular ROS, DPPH radicals, and lipid peroxidation.
- Mulberry extracts effectively inhibited H2O2-induced DNA fragmentation in pancreatic beta cells.
Conclusions:
- Mulberry extracts possess significant antioxidant properties beneficial for pancreatic beta cells.
- These antioxidant properties suggest potential applications of mulberry extracts in preventing or treating type 1 diabetes.
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