Nicotinamide exerts antioxidative effects on senescent cells
Ju Yeon Kwak1, Hyun Joo Ham1, Cheol Min Kim2
1Department of Life Science, University of Seoul, Seoul 130-743, Korea.
Molecules and Cells
|January 21, 2015
Summary
Nicotinamide (NAM) reduces damaging reactive oxygen species (ROS) and slows cellular aging. This study shows NAM
Area of Science:
- Biochemistry
- Cell Biology
- Gerontology
Background:
- Reactive oxygen species (ROS) accumulation is linked to cellular senescence.
- Nicotinamide (NAM) previously showed potential to extend cell lifespan by suppressing ROS.
Purpose of the Study:
- To investigate if NAM reduces ROS levels and senescence phenotypes in cells.
- To determine if NAM's effects differ from other ROS scavengers.
Main Methods:
- Utilized MCF-7 cells and human fibroblasts.
- Treated cells with Nicotinamide (NAM) and N-acetyl cysteine.
- Assessed ROS levels and senescence phenotypes.
Main Results:
- NAM significantly decreased ROS levels in both cell models.
- NAM attenuated senescence phenotypes, but not irreversible growth arrest.
- N-acetyl cysteine showed less effective ROS scavenging compared to NAM.
Conclusions:
- NAM exhibits potent antioxidant and anti-senescent properties.
- NAM may mitigate oxidative damage and cellular deterioration in postmitotic cells.
- NAM's mechanism may be distinct from general ROS scavenging.
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