Genistein Inhibits Fine-Dust-Induced Matrix Metalloproteinase-1 in Human Keratinocytes

Area of Science:

• Dermatology
• Environmental Science
• Biochemistry

Background:

• Particulate matter (PM) accelerates skin aging and collagen degradation via oxidative stress and matrix metalloproteinase-1 (MMP-1) upregulation.
• The skin barrier is vulnerable to air pollution, contributing to aging and carcinogenesis.
• Identifying protective compounds against PM-induced skin aging is crucial.

Purpose of the Study:

• To investigate the protective effects of genistein against PM-induced skin aging.
• To evaluate genistein's impact on collagen degradation markers and oxidative stress in skin cells.

Main Methods:

• HaCaT human keratinocytes were exposed to PM.
• Cells were treated with genistein.
• MMP-1 expression, transcription factors (AP-1, NF-κB), and reactive oxygen species (ROS) production were analyzed.

Main Results:

• Genistein significantly reduced PM-induced MMP-1 expression, protecting collagen.
• Genistein decreased activator protein-1 (AP-1) and nuclear factor kappa B (NF-κB) expression.
• Genistein markedly reduced PM-induced reactive oxygen species (ROS) production.

Conclusions:

• Genistein demonstrates protective effects against PM-induced skin aging.
• It mitigates collagen degradation and oxidative stress.
• Genistein shows potential as a therapeutic agent for pollution-related skin aging.