A Review on the Application of Stem Cell Exosomes in Anti-aging

Abstract

A significant biomedical concern is skin aging, which is caused by both extrinsic environmental stressors like UV radiation and intrinsic genetic factors. Traditional anti-aging treatments usually offer only superficial or temporary benefits, failing to deliver long-lasting effects to help skin recover from aging. Exosomes generated from mesenchymal stem cells (MSCs) have recently become a promising cell-free treatment due to their significant regeneration potential, low immunogenicity, and molecular regulation of target cells. This review summarizes how stem cell-derived exosomes combat skin aging across three key mechanisms: anti-oxidation, anti-inflammation, and tissue repair. Exosomes deliver bioactive molecules, including miRNAs and antioxidant enzymes, that clear reactive oxygen species (ROS); activate endogenous defenses like the Keap1-Nrf2 pathway; and suppress chronic inflammation by modulating NF-κB. All of them give skin cells more time to recover and delay the process of aging. While experimental findings are encouraging, key hurdles remain, mainly because existing methodsstill lack robust human clinical data. This review outlines both the potential and current limitations of exosome therapies to help guide future research toward standardized, clinically viable anti-aging solutions.