Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Inhibitory Effect on Androgen Receptor-Dependent Prostate Cancer Cell Growth by Anti-Histone Acetyltransferase Activity from Terminalia chebula Retz. Fruit Methanol Extract

가자(Terminalia chebula Retz.) 열매 메탄올 추출물의 Histone Acetyltransferase 활성 저해에 따른 항전립선암 효과

  • Lee, Yoo-Hyun (Dept. of Food Science and Nutrition, University of Suwon)
  • Received : 2013.09.16
  • Accepted : 2013.09.26
  • Published : 2013.10.31
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Abstract

The inhibitory effect of histone acetyltransferase from methanol extract of Terminalia chebula Retz. fruit (TCME) was investigated in prostate cancer cell. TCME significantly inhibited histone acetyltransferase (HAT) activity by over 50% at 100 ${\mu}g/mL$ concentration. TCME treatment repressed androgen receptor (AR) mediated transcription, mRNA level of AR target genes, prostate specific antigen (PSA) and NKX-3.1, as well as AR acetylation. Finally, the prostate cancer cell viability was dramatically reduced by TCME treatment at 0~100 ${\mu}g/mL$ concentration. These results indicated that TCME, as a potent HAT inhibitor, could suppress prostate cancer cell growth by AR mediated transcription regulation.

본 연구에서는 Terminalia chebula Retz.의 성숙열매인 가자 메탄올 추출물(TCME)을 이용하여 HAT 활성을 억제함으로써 AR의 아세틸화 감소를 유도하여 전립선암세포의 성장을 억제하였다. TCME의 처리는 HAT 활성을 100 ${\mu}g/mL$의 농도에서 50% 이상 저해하였으며, p300과 CBP 등의 특이적 HAT 단백질에서도 유의적인 저해활성을 보였다. TCME를 0~100 ${\mu}g/mL$로 안드로젠 수용체 의존적 전립선 암세포인 LNCaP에 처리한 결과, reporter assay에서 AR 매개 전사를 억제하고 AR target gene의 mRNA 발현을 억제하였다. 동일 농도에서 AR의 아세틸화가 감소한 결과를 보였으며, 결국 전립선암세포주의 성장억제를 유도하였다. 이같은 결과에서 가자 메탄올 추출물은 HAT 활성을 억제하며, AR의 아세틸화를 감소시킴으로써 효과적인 전립선암 치료소재로 개발될 수 있는 가능성이 있음을 제안한다.

Keywords

References

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