Grape Seed Extract NSPCC1 Counteracts Mouse Skin Aging via Modulating MAPK and AMPK Pathways

Area of Science:

• Dermatology and Aging Research
• Natural Product Chemistry
• Molecular Biology

Background:

• Skin aging results from extrinsic (e.g., UV exposure) and intrinsic factors (oxidative stress, inflammation, glycation).
• Plant-derived compounds, like grape seed extract (GSE), show potential for anti-aging skincare due to antioxidant and anti-inflammatory properties.
• Procyanidin C1 (PCC1), a component of GSE, has demonstrated senolytic activity and lifespan extension in mice.

Purpose of the Study:

• To evaluate a novel PCC1-rich GSE (NSPCC1) against UV- and d-galactose-induced skin aging in a mouse model.
• To investigate the underlying molecular mechanisms of NSPCC1's anti-aging effects.
• To assess NSPCC1's impact on skin structure, hydration, elasticity, and antioxidant capacity.

Main Methods:

• A mouse model was used to induce skin aging via UV radiation and d-galactose.
• Mice were supplemented with NSPCC1, and skin and serum were analyzed.
• Key outcomes measured included skin cell death, collagen levels, skin elasticity, hydration, and antioxidant markers.
• RNA sequencing was employed to analyze gene expression changes in response to NSPCC1.

Main Results:

• NSPCC1 supplementation significantly reduced skin cell death, collagen degradation, and structural atrophy.
• It partially restored skin elasticity and hydration while enhancing serum and tissue antioxidant defenses.
• RNA sequencing indicated that NSPCC1 modulates MAPK and AMPK pathways, counteracting age-related dysregulation.

Conclusions:

• NSPCC1 demonstrates significant potential in mitigating both extrinsic and intrinsic skin aging processes.
• This novel GSE formulation offers a promising natural strategy for advanced skincare interventions.
• Further research into NSPCC1's mechanisms could lead to new anti-aging therapies.