Regenerative Potential Nanomedicine of Adipocyte Stem Cell-Derived Exosomes in Senescent Skin Tissue.

Early human evidence such as case series or small samples is exploring possible benefits.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Introduction Skin is the first-line barrier defense against infection, irradiation, and toxins, but is prone to natural aging (intrinsic aging) and environmental factors (extrinsic aging). Hence, there is an increasing urgency to explore an effective treatment for aging skin. This study was focused on testing the potential of utilizing adipocyte stem cell derived exosomal as nanomedicine to regenerate the dermal layer and counteract signs of skin aging. Methods The harvested stem cells from adipose tissues were isolated, cultured, and then starved. The centrifugation of cell cultures medium yielded the human adipose-derived stem cells conditional medium (HADSCs-CM). Collagen secretion and fibroblast viability of human fibroblasts (Hs68) were measured in the presence of HADSCs-CM. The dermal layer, vascular endothelial growth factor (VEGF), and collagen levels were evaluated on the mice animal models between the treatments with and without HADSCs-CM. Results Western blotting, transmission electron microscopy (TEM), and dynamic light scattering (DLS) confirmed that the functional particles in HADSCs-CM were exosomes. When Hs68 fibroblasts were treated with HADSCs-CM, both cell viability and collagen secretion increased in a dose-dependent manner. Following the post-ultraviolet A (post-UVA) exposure, the mice exposed to the HADSCs-CM have decreased dermal thickness and VEGF expres

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

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