약학회지 (YAKHAK HOEJI)

  • 제54권6호
  • /
  • Pages.481-487
  • /
  • 2010
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  • 0377-9556(pISSN)
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  • 2383-9457(eISSN)
대한약학회 (The Pharmaceutical Society of Korea)
권호 표지

Hop 유래 Xanthohumol 화합물에 의한 Proteasome계의 유도발현

Induction of the Proteasome Subunits by Xanthohumol Compounds from Hops

  • 이향림 (영남대학교 약학대학) ;
  • 이용록 (영남대학교 디스플레이 화학공학부) ;
  • 곽미경 (영남대학교 약학대학)
  • 투고 : 2010.08.23
  • 심사 : 2010.11.10
  • 발행 : 2010.12.31
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초록

The proteasome plays a major role in the degradation of abnormal proteins within the cell. Therefore, repressed proteasome function is accepted as one of factors contributing the pathogenesis of multiple degenerative diseases. In the present study, we have observed that xanthohumol C, which is one of prenylated flavonoids from hops, increases the expression of the proteasome subunits through the Nrf2 pathway. Treatment of murine renal epithelial TCMK-1 cells with xanthohumol C and its methoxymethoxy-derivative elevated the expression of the Antioxidant Response Element (ARE)-driven reporter gene, as well as Nrf2-target genes including NAD(P)H: quinoneoxidoreductaes 1 (Nqo1). Transcript levels for the catalytic subunits of the proteasome Psmb5 and Psmb6 were increased by these compounds. The activation of the psmb5 promoter by xanthohumol C was abolished when the ARE in this promoter was mutated, indicating that proteasome induction was mediated by the Nrf2-ARE pathway. These results suggest that xanthohumol compounds from hops have a potential benefit on various oxidative stress-associated human diseases through the induction of the proteasome.

키워드

참고문헌

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