인간 진피유래 줄기세포 배양액에 의한 인각각질형성세포의 노화 개선 효과
Human Dermal Stem/Progenitor Cell-derived Conditioned Medium Ameliorates Ultraviolet A-induced Damage of Normal Human Epidermal Keratinocytes
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초록
목적: 본 연구는 진피유래 줄기세포 배양액이 ultraviolet A (UVA)에 의해 노화가 유도된 인간각질형성세포의 보습 효과를 확인하기위하여 수행되었다. 방법: UVA 처리에 의해 노화가 유발된 인간각질형성세포에서 진피유래 줄기세포 배양액의 보습 효과를 확인하기 위해서 진피유래 줄기세포 배양액의 2,2-diphenyl-1-picrylhydrazyl (DPPH) 라디컬 소거능, 세포 생존율, 각질형성세포 보습인자 및 분화마커의 발현 양상, hyaluronic acid (HA) 단백질의 생성 정도를 확인하였다. 결과: 진피유래 줄기세포 배양액의 보습효과를 확인하기 위하여 hyaluronan synthase 2 (HAS2), aquaporin 3 (AQP3), keratin 1 (KRT1), keratin 10 (KRT10) mRNA 발현을 확인한 결과, UVA 조사에 의해 감소한HAS2와AQP3 유전자 발현이 진피유래 줄기세포 배양액에 의하여 각각 2.29배, 4.82 배 증가하였다. 인간각질형성세포의 과각질화에 관여하는KRT1과KRT10 유전자의 발현은 UVA 조사군 대비 진피유래 줄기세포배양액에 의하여 각각 47%, 58% 감소함을 확인하였다. 또한 HA 단백질의 생성이 진피유래 줄기세포 배양액에 의해 46% 증가함을확인하였다. 결론: 본 연구를 통해 진피유래 줄기세포 배양액의 보습 효능을 확인하였고, 진피유래 줄기세포 배양액이 피부미용 및화장품, 의약품 산업 등에 응용될 수 있다고 여겨지며 그 가능성을 확인하기 위해 추가적인 기전연구가 필요할 것이다.
Abstract
Purpose: The present study aimed to define the epidermal moisturizing effects of human dermal stem/progenitor cell-derived conditioned medium (hDSPC-CM) on normal human epidermal keratinocytes (NHEKs). Methods: To investigate the epidermal moisturizing effects of hDSPC-CM on NHEKs, I measured 2,2-diphenyl-1- picrylhydrazyl (DPPH) radical-scavenging activity and gene expression and performed cell viability assay and hyaluronic acid (HA)–enzyme-linked immunosorbent assay (ELISA). Results: In the present study, I elucidated the effects of hDSPC-CM on the mRNA expression of hyaluronan synthase 2 (HAS2), aquaporin 3 (AQP3), keratin 1 (KRT1), and keratin 10 (KRT10) and HA production. Real-time polymerase chain reaction (real-time PCR) revealed that hDSPC-CM increased HAS2 and AQP3 expression in NHEKs, and HA-ELISA revealed that hDSPC-CM increased HA production in NHEKs. On the other hand, hDSPC-CM decreased KRT1 and KRT10 expression in NHEKs. Conclusion: The results revealed that hDSPC-CM is a potent moisturizing cosmetic ingredient for epidermal moisturization. Based on this study, I anticipate further studies on mechanisms underlying the effects of hDSPC-CM on epidermal keratinocytes to develop not only cosmetics but also healthcare medicines.
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