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Raw 264.7 세포에서 섬바디나물 추출물의 iNOS, COX-2 단백질 및 mRNA 발현 억제 효과

Inhibitory Efficacy of Dystaenia takeshimana Extract on iNOS, COX-2 Protein and mRNA Expression in Raw 264.7 Cell

  • 이진영 (호서대학교 한방화장품과학과) ;
  • 유단희 (호서대학교 한방화장품과학과) ;
  • 주다혜 (호서대학교 한방화장품과학과) ;
  • 채정우 ((재)경기도산림환경연구소)
  • Lee, Jin-Young (Department of Herbal Cosmetic Science, Hoseo University) ;
  • Yoo, Dan-Hee (Department of Herbal Cosmetic Science, Hoseo University) ;
  • Joo, Da-Hye (Department of Herbal Cosmetic Science, Hoseo University) ;
  • Chae, Jung-Woo (Gyeonggi-do Forest Environment Research Institute)
  • 투고 : 2016.10.27
  • 심사 : 2016.11.23
  • 발행 : 2016.12.28

초록

본 연구에서는 섬바디 나물의 항염증 효과를 알아보기 위하여 LPS로 염증을 유도한 Raw 264.7 세포에 대한 섬바디나물 80% 에탄올 추출물의 효과를 살펴보았다. 섬바디 나물 추출물을 LPS로 유도된 Raw 264.7 대식세포에서 전염증성인자(iNOS, COX-2)들을 생성하여 측정하였다. 섬바디 나물 추출물의 대식세포에서의 세포 독성 측정을 MTT를 수행하였다. 섬바디 나물 추출물의 세포 독성을 측정한 결과, $1,000{\mu}g/ml$의 농도에서 100% 이상의 세포 생존율을 보였다. 섬바디 나물 추출물의 50, 100, $500{\mu}g/ml$ 농도에서 iNOS와 COX-2의 단백질 발현 억제 효과를 측정하기 위해 western blot을 통해 측정하였고, 양성대조군으로는 ${\beta}-actin$을 사용하였다. 그 결과, 섬바디 나물 추출물을 western blot을 통해 측정한 iNOS, COX-2의 단백질 발현 억제 효과는 $500{\mu}g/ml$ 농도에서 각각 56%, 61.6%로 감소하였다. 섬바디 나물 추출물의 50, 100, $500{\mu}g/ml$ 농도에서 iNOS, COX-2의 mRNA의 발현억제 효과를 측정하기 위해 RT-PCR을 통해 측정하였으며, 양성 대조군으로 GAPDH를 사용하였다. 그 결과, 섬바디 나물 추출물을 RT-PCR을 통해 iNOS, COX-2의 mRNA 발현 억제 효과를 측정한 결과는 $500{\mu}g/ml$에서 각각 77.9%, 83.3%로 감소하였다. 이를 통해, 섬바디 나물 추출물은 염증을 억제시켜 주는 가능성이 있는 항염증 물질로써의 효과가 있을 것으로 보여진다.

In this study, the anti-inflammatory activities of the 80% ethanol extract of Dystaenia takeshimana (DT) were investigated using Raw 264.7 cells treated with lipopolysaccharide (LPS). The effect of DT extract on the production of pro-inflammatory factors (iNOS, COX-2) in LPS-stimulated Raw 264.7 macrophages was examined. The cytotoxic effect of DT extract on macrophage cells (Raw 264.7) was examined by the 3-[4, 5-dimethyl-thiazol-2-yl]-2, 5-diphenyl-tetrazoliumbromide (MTT) assay. Treatment with DT extract showed 100% or more cell viability at the concentration $1,000{\mu}g/ml$. The inhibitory effect of DT extract on protein expression of inducible NOS (iNOS) and cyclooxygenase-2 (COX-2) was measured by western blotting using the concentrations 50, 100, and $500{\mu}g/ml$, with ${\beta}-actin$ used as the positive control. Consequently, the protein expression of iNOS, and COX-2 as observed by western blotting, was decreased by 56%, 61.6%, respectively with $500{\mu}g/ml$ DT extract. Inhibition of iNOS and COX-2 mRNA expression was measured by reverse transcription- polymerase chain reaction (PCR) using DT extract concentrations 50, 100, and $500{\mu}g/ml$, with GAPDH used as a positive control. Consequently, the mRNA expression of iNOS and COX-2 as observed by reverse-transcription-PCR was decreased by 77.9% and 83.3%, respectively at $500{\mu}g/ml$ concentration of DT extract. In conclusion, DT extract may affect inflammatory factors as a potential anti-inflammatory agent.

키워드

참고문헌

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