Investigating the effect of Quercetin in the presence of CoCl 2 as an inducing hypoxia agent on the biological characteristics of human telomerase reverse transcription-immortalized adipose tissue-derived MSCs.

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)

Studying the effect of small chemical molecules on stem cell characteristics under normoxia and hypoxia conditions is crucial to discovering the best conditions for effective biomedical applications. This study aimed to investigate the effect of Quercetin (QC; a flavonoid) in the presence of CoCl 2 as a mimicking hypoxia chemical on the biological features of human telomerase reverse transcription-immortalized mesenchymal stem cell (hTERT-MSC) lines. The effect of CoCl 2 , QC, and their combination on the viability, proliferation, and migration of hTERT-MSCs were evaluated by MTT, Trypan-blue staining and cell counting by hemocytometer, and in vitro wound healing assays, respectively. Moreover, the effect of treatments on the reactive oxygen species (ROS) production, cell cycle, and HIF1a, c-MET, H19, and CASP3 gene expression was assessed by NBT, PI-staining and flow-cytometry, and real-time PCR assays, respectively. We found that CoCl 2 and QC have different effects on the viability, proliferation, and migration of hTERT-MSCs in a dose-dependent manner. In addition, CoCl 2 and QC affect ROS levels in cells in a dose- and time-dependent manner. While CoCl 2 up-regulated HIF1a, QC and CoCl 2 down-regulated CASP3 and c-MET in hTERT-MSCs. Moreover, QC reduced HIF1a and lncRNA-H19 expression in cells. Furthermore, in the presence of CoCl 2 , QC at low concentrations reduced hTERT-

Evidence level

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

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