PI3K-Mediated Proliferation of Fibroblasts byCalendula officinalisTincture: Implication in Wound Healing

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Calendula officinalis, a member of the Asteraceae family, is a flowering plant and has been used for its antibacterial, antifungal, antiviral, antiinflammatory, anticancer and wound healing activity. The mode of action ofC. officinalistincture on wound healing is poorly understood. Here, we investigated the role ofC. officinalistincture (CDOT) on cell viability and wound closure.C. officinalistincture stimulated both proliferation and migration of fibroblasts in a statistically significant manner in a PI3K-dependent pathway. The increase in phosphorylation of FAK (Tyr 397) and Akt (Ser 473) was detected after treatment of CDOT. Inhibition of the PI3K pathway by wortmannin and LY294002 decreased both cell proliferation and cell migration. HPLC-ESI MS revealed the presence of flavonol glycosides as the major compounds of CDOT. Altogether, our results showed that CDOT potentiated wound healing by stimulating proliferation and migration of fibroblast in a PI3K-dependent pathway, and the identified compounds are likely to be responsible for wound healing activity. Copyright © 2015 John Wiley & Sons, Ltd.

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