Abstract
Purpose: Salvia microphylla (SM) has variety bioactivities including antimutagenic, lipase-inhibitory and insecticidal effects. However, its biological activities on skin remain unclear. In this study, we examined the effect of SM water extract (SMW) of SM on skin wound healing- and skin barrier-linked responses in human keratinocytes (HaCaT cells).Methods: The antioxidant activities were measured using 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay. Proliferation was confirmed by MTT assay, and migration was measured using a scratch wound healing assay. In order to confirm the proliferation and migration-related signal pathway, it was confirmed by Western blot. Type Ⅰ collagen synthesis and MMP-1 production were confirmed by enzyme-linked immunosorbent assay (ELISA). In addition, the expression of filaggrin, involucurin, and loricin were measured by RT-qPCR.Results: DPPH and ABTS radical scavenging activity of SMW increased a concentration-dependent manner. SMW induced proliferation and migration of HaCaTs, especially at 400 μg/mL(proliferation-inducing activity=133.03%; migration-inducing activity=213.43%). Furthermore, SMW significantly enhanced the phosphorylation of extracellular signal-regulated kinase (ERK) 1/2, p38 MAPK and serine/threonine-specific protein kinase (AKT) in HaCaTs, stimulated Type I collagen synthesis and reduced MMP-1 production. It was confirmed that mRNA expression of filaggrin and involucrin, proteins that play important roles in the structure and function of the skin barrier, was significantly increased.Conclusion: These results demonstrate that SMW has skin regeneration and wound healing activity and skin barrier improvement in HaCaTs. In the future, SMW was verified for its applicability as a material for skin regeneration and skin barrier improvement material in the cosmetics industry.
Published Version
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