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MC3T3-E1 조골세포주와 RAW 264.7 파골세포주에서 길경을 함유한 한약재 추출물의 항골다공증 효과

Anti-osteoporotic Activity of Mixed Herbal Extract Involving Platycodon Grandiflorum Root in Osteoblastic MC3T3-E1 and Osteoclastic RAW 264.7 cells

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목적: 본 연구는 길경뿌리(Platycodon grandiflorum root)를 함유한 복합 한약재 추출물(ExMH-PGR)의 골다공증 예방 및 치료효과를 알아보기 위해 MC3T3-E1 조골세포주와 RAW 264.7 파골세포주를 이용하여 in vitro 수준에서 검증하였다. 방법: 배양액에 다양한 농도의 ExMH-PGR를 첨가하여 MC3T3-E1 세포와 RAW 264.7 세포의 세포증식을 비교하였다. MC3T3-E1 세포에서 Alkaline phosphatase(ALP) 활성, 콜라겐 합성, 오스테올칼신 생성, 무기질 축적을 분석하였다. RAW 264.7 세포에서 Tartrate-resistant acid phosphatase (TRAP) 활성과 actin ring 형성 정도를 분석하였다. 결과: ExMH-PGR는 25 mg/mL 농도까지 유의한 수준으로 ALP 활성, 콜라겐 합성, 그리고 오스테올칼신 형성을 증가시켰다. 50~200 mg/mL의 ExMH-PGR은 TRAP 활성과 actin ring 형성을 유의하게 억제했다.결론: ExMH-PGR은 조골세포의 활성을 촉진하고 파골세포의 활성을 억제하는 효과가 있어 골다공증 치료에 유용할 가능성이 있다.

Abstract

Objectives: Osteoporosis is considered a serious human disease. We developed an extract of mixed herbs containing root of Platycodon grandiflorum (ExMH-PGR), which is expected to be effective in preventing or treating osteoporosis. The aim of this study was to investigate the anti-osteoporotic effect of ExMH-PGR in osteoblastic MC3T3-E1 cells and osteoclastic RAW 264.7 cells. Methods: To examine the anti-osteoporotic effect of ExMH-PGR, osteoblast and osteoclast differentiation were induced and cultured with various concentrations of ExMH-PGR. Alkaline phosphatase (ALP) activity, collagen synthesis, osteocalcin production, and mineralization in MC3T3-E1 cells were analyzed. Tartrate-resistant acid phosphatase (TRAP) activity and the formation of actin ring in RAW 264.7 cells were analyzed. Results: ExMH-PGR at concentration up to 25 μg/mL significantly increased ALP activity, collagen synthesis, osteocalcin production, and mineralization in MC3T3-E1 cells. ExMH-PGR at 50 to 200 μg/mL significantly inhibited TRAP activity and the formation of actin ring in RAW 264.7 cells. Conclusions: These results demonstrate that ExMH-PGR stimulates osteoblastic activities and inhibits osteoclastic activities in in vitro systems, suggesting that ExMH-PGR might be considered as an anti-osteoporotic candidate for treatment of osteoporosis disease.

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