Inhibitory effect of Nymphoides indica extract on α-MSH induced melanin synthesis

본 연구에서는 어리연꽃 추출물의 B16F10 세포에서의 미백활성을 측정하였다. 버섯유래의 tyrosinase 활성 저해능 측정결과 $1,000{\mu}g/mL$의 농도에서 42%의 저해율을 나타내었으며, B16F10 세포내의 tyrosinase, 멜라닌 생합성 저해능은 $5{\mu}g/mL$에서 26, 25%의 저해능을 나타내었다. 멜라닌 생성 관련 인자중 상위 단계인 cAMP와 PKA의 발현을 측정한 결과 농도 의존적으로 발현양이 줄어드는 것을 확인하였다. 또한 어리연꽃추출물의 미백과 관련된 tyrosinase, tyrosinase related protein(TRP) 1, TRP2, microphthalmia associated transcription factor(MITF)의 단백질 및 유전자 발현양이 감소함을 나타내었다. 본 실험을 통하여 어리연꽃 추출물이 cAMP를 효과적으로 억제함으로써, PKA의 활성을 저해 시켰으며, 이를 통해 tyrosinase 활성뿐만 아니라 TRP1, TRP2 그리고 MITF 발현을 효과적으로 저해 한다는 사실을 확인하여 기능성 미백 화장품 소재로서의 활용 가능성을 제시하고자 한다.

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