Abstract
BACKGROUND:
Oxidative stress plays an important role in the skin aging process. Rapamycin has been shown to have anti-aging effects, but its role in oxidative senescence of skin cells remains unclear. The aim of this study was to explore the effect of rapamycin on oxidative stress-induced skin cell senescence and to illustrate the mechanism.
METHODS:
Primary human skin fibroblasts (HSFs) were extracted and a model of H2O2-induced oxidative senescence was constructed, and the effects of rapamycin on their value-added and migratory capacities were detected by CCK-8 and scratch assays. SA-β-gal was utilized to detect senescence, oxidatively closely related factors were also assessed. Gene and protein expressions of senescence, oxidative, and autophagy were detected by western blotting and quantitative-PCR. The data were analyzed by one-way analysis of variance.
RESULTS:
Rapamycin (0.1 nmol/L for 48 h) promoted the proliferative and migration of H2O2-treated HSFs (p < 0.05), decreased senescent phenotypes SA-β-gal staining and the expression of P53, and MMP-1 proteins, and increased the expression level of COL1A-1 (p < 0.001). Rapamycin also enhanced the activities of SOD and HO-1, and effectively removed intracellular ROS, MDA levels (p < 0.05), in addition, autophagy-related proteins and genes were significantly elevated after rapamycin pretreatment (p < 0.001). Rapamycin upregulated the autophagy pathway to exert its protective effects.
CONCLUSION:
Our findings indicate that rapamycin shields HSFs from H2O2-induced oxidative damage, the mechanism is related to the reduction of intracellular peroxidation and upregulation of autophagy pathway. Therefore, rapamycin has the potential to be useful in the investigation and prevention of signs of aging and oxidative stress.
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Data availability
The datasets that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
Funding for this project was supported by Sichuan Transfer Project (2021SNZY001); Provincial Science and Technology Plan Project of Sichuan Provincial Department of Science and Technology (2022SNZY001); Primary Health Development Research Center of Sichuan Province Program (SWFZ20-C-086); Science and Technology Project of Sichuan Provincial Health Commission (Appropriate Technology Base) (2022JDXM021); Science and Technology Research Project of Sichuan Administration of Traditional Chinese Medicine (2021MS100). This work was performed in the Basic Laboratory of Hospital.
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The study protocol was approved by the institutional review board of Hospital's Ethics Committee (IRB No. KYLLKS2023010). Informed consent was confirmed by the IRB. There are no animal studies were conducted for this article.
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Tang, Y., Yang, S., Qiu, Z. et al. Rapamycin Attenuates H2O2-Induced Oxidative Stress-Related Senescence in Human Skin Fibroblasts. Tissue Eng Regen Med (2024). https://doi.org/10.1007/s13770-024-00660-2
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DOI: https://doi.org/10.1007/s13770-024-00660-2