Human adipose stem cell-derived exosomes modulate the transcriptome of D-galactose-Induced neuronal cells.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• 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)

Brain aging, which influences neurological function across cellular and molecular domains, is a critical concern in the elderly population. Therapeutic strategies for mitigating age-related neurodegeneration should target molecular pathways that are primarily involved in neuroinflammation. Exosomes derived from human adipose tissue mesenchymal stem cells (hASCs) have demonstrated anti-inflammatory and rejuvenating properties, making them promising agents for neurochemical intervention. However, their transcriptomic impact on neuronal cells remains largely unexplored. To address this research question, we applied high-throughput mRNA sequencing and downstream bioinformatic analysis. As an in vitro model for aging and neurodegeneration, CNS mouse-derived CAD cells were exposed to D-galactose (DG) to trigger molecular responses and were used to evaluate the efficacy of the isolated exosomes. The hASC-exosomes were isolated via ultrafiltration and subsequently characterized via nanoparticle tracking analysis, cryo-EM microscopy, and immunoassays. The internalization of PHK26-tagged hASC exosomes in the cytosol of the neuronal cells was monitored. Illumina-based mRNA sequencing has allowed expression profiling of more than 27,000 genes. Comparative transcriptomic profiling revealed 3951 differentially expressed genes (DEGs) associated with DG-induced cells and 3091 DEGs modulated by

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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