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In vivo bacterial infection acne treatment of Sapindus saponins: Skin microbiota, network pharmacology, and
Minping Wei1, Yanwei Zhou2, Xiaosu Hu2
1School of Liquor and Food Engineering, Guizhou University, Guiyang, Guizhou Province, 550025, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, 214122, China.
Ethnopharmacological Relevance:
Sapindus mukorossi has been traditionally used in China for skin whitening and acne treatment. Previous studies have confirmed the antibacterial activity of Sapindus saponins against Cutibacterium acnes, which is reportedly the primary factor causing inflamed lesions in acne vulgaris. However, the anti-acne activity in vivo and related cellular targets of Sapindus saponins are still unknown.
Aim Of The Study:
This study aimed to investigate the anti-acne effects in vivo and the action mechanism of Sapindus mukorossi saponins fraction (SMSF) by the strategy of network pharmacology, transcriptomic analysis, and microbiome integration.
Materials And Methods:
The network pharmacology analysis was used to evaluate the cellular targets of SMSF treatment on acne. The transcriptome analysis was utilized to identify the differentially expressed genes (DEGs), and the 16S rDNA sequencing was employed to analyze the composition of skin microbiota.
Results:
SMSF was proven to have no acute, continuous skin or eye irritation in New Zealand rabbits when the concentration was below 50 mg/mL. SMSF could greatly reduce the lesion degree of rabbit ear acne and significantly decrease the content of pro-inflammatory factors in the rabbit ear tissue and serum after treatment for 14 days. The contents of dihydrotestosterone and leukotriene were significantly decreased, and the structure of bacterial microbiota was regulated. The network pharmacology analysis showed that the main 79 anti-acne targets of SMSF such as tumor necrosis factor (TNF) and interleukin 10. The transcriptomic analysis confirmed that there were 2084 DEGs between the SMSF-treated group and the model group, of which 870 were up-regulated and 1214 were down-regulated. Correlation analysis between the DEGs and the anti-acne targets predicted by network pharmacology showed that there were 6 overlapping targets, including TNF, vitamin D receptor, androgen receptor, prostaglandin endoperoxide synthase 2, peroxisome proliferator activated receptor gamma, and nuclear receptor subfamily 3, group C, member 1. Moreover, SMSF achieved anti-acne activities by maintaining normal cellular protein synthesis, regulating cytokine production as well as regulating cancer-related genes and the mitogen-activated protein kinase signaling pathway.
Conclusion:
SMSF exerted anti-acne activities via multiple targets and signaling pathways. This study provided a theoretical basis for the utilization of Sapindus saponins in the fields of medicine and cosmetics, and supplied a guiding significance for the development of natural anti-acne drugs.
