Specialized pro-resolving mediator 7S MaR1 inhibits IL-6 expression via modulating ROS/p38/ERK/NF-κB pathways in...

Area of Science:

• Dermatology
• Molecular Biology
• Environmental Health

Background:

• Airborne particulate matter (PM) exposure, particularly PM10, compromises human skin barrier function.
• Keratinocytes are primary targets of PM, leading to inflammation and oxidative stress.
• Identifying effective agents to mitigate PM-induced skin damage is crucial.

Purpose of the Study:

• To investigate the protective effects of 7S MaR1, a specialized pro-resolving mediator, against PM10-induced skin inflammation and oxidative stress.
• To elucidate the molecular mechanisms underlying 7S MaR1's protective action in human keratinocytes.

Main Methods:

• Utilized human keratinocyte (HaCaT) cell line exposed to PM10.
• Assessed reactive oxygen species (ROS) generation and the expression of ROS scavenger genes.
• Analyzed the expression of interleukin-6 (IL-6) and the modulation of p38/ERK/NF-κB signaling pathways.

Main Results:

• 7S MaR1 modulated PM10-induced ROS generation by restoring ROS scavenger gene expression.
• 7S MaR1 significantly reduced PM10-induced IL-6 expression.
• The protective effect of 7S MaR1 involved the modulation of p38/ERK/NF-κB signaling pathways.

Conclusions:

• PM10 exposure induces oxidative stress and inflammatory cytokines, contributing to skin barrier dysfunction and potential skin diseases.
• 7S MaR1 demonstrates significant potential in resolving PM10-induced skin inflammation and oxidative stress.
• 7S MaR1 represents a promising therapeutic agent for managing skin damage caused by particulate matter exposure.