Journal of Nutrition and Health

  • 제55권6호
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  • Pages.617-629
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  • 2022
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  • 2288-3886(pISSN)
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  • 2288-3959(eISSN)
한국영양학회 (The Korean Nutrition Society)
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Hederagenin의 뼈 형성 관련 작용 기전 연구

Molecular mechanisms of hederagenin in bone formation

  • Hyun-Ju, Seo (Department of Food Science and Nutrition, Andong National University) ;
  • In-Sook, Kwun (Department of Food Science and Nutrition, Andong National University) ;
  • Jaehee, Kwon (Department of Food Science and Nutrition, Andong National University) ;
  • Yejin, Sim (Department of Food Science and Nutrition, Andong National University) ;
  • Young-Eun, Cho (Department of Food Science and Nutrition, Andong National University)
  • 투고 : 2022.10.04
  • 심사 : 2022.11.09
  • 발행 : 2022.12.31
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초록

본 연구는 속단으로부터 단일 화합물로 분리한 Hed의 조골세포 활성 효능과 작용 기전 규명을 위해 수행되었다. Hed는 MC3T3-E1 세포의 증식과 ALP 효소 활성을 자극하여 세포외 기질에 인산과 칼슘 이온 침착을 증가시켰다. Hed는 BMP-2/Smad 신호 전달 경로를 활성화하여 Runx2, ALP, OPN 및 ProCOL의 mRNA와 단백질 발현을 유의하게 증가시켜 조골세포의 성숙과 분화를 유도하였다. 따라서 본 연구결과 Hed는 조골세포 활성 효능을 가진 것으로 판단되며 항골다공증 기능성 소재로의 개발 가능성을 확인하였다.

Purpose: Osteoporosis is characterized by structural deterioration of the bone tissue because of the loss of osteoblastic activity or the increase in osteoclastic activity, resulting in bone fragility and an increased risk of fractures. Hederagenin (Hed) is a pentacyclic triterpenoid saponin isolated from Dipsaci Radix, the dried root of Dipsacus asper Wall. Dipsaci Radix has been used in Korean herbal medicine to treat bone fractures. In this study, we attempted to demonstrate the potential anti-osteoporotic effect of Hed by examining its effect on osteoblast differentiation in MC3T3-E1 cells. Methods: Osteoblastic MC3T3-E1 cells were cultured in 0, 1, and 10 ㎍/mL Hed for 3 and 7 days. The activity of alkaline phosphatase (ALP), bone nodule formation and level of expression of bone-related genes and proteins were measured in MC3T3-E1 cells exposed to Hed. The western blot test was used to detect the activation of the bone morphogenetic protein-2 (BMP2)/ Suppressor of Mothers against Decapentaplegic (SMAD)1 pathway. Results: Hed significantly increased the proliferation of MC3T3-E1 cells. Intracellular ALP activity was significantly increased in the 1 ㎍/mL Hed-treated group. Hed significantly increased the concentration of calcified nodules. Furthermore, Hed significantly upregulated the expression of genes and proteins associated with osteoblast proliferation and differentiation, such as Runt-related transcription factor 2 (Runx2), ALP, osteopontin (OPN), and type I procollagen (ProCOL1). Induction of osteoblast differentiation by Hed was associated with increased BMP2. In addition, Hed induced osteoblast differentiation by increasing the activity of SMAD1/5/8. These results suggest that Hed has the potential to prevent osteoporosis by promoting osteoblastogenesis in osteoblastic MC3T3-E1 cells via the modulation of the BMP2/SMAD1 pathway. Conclusion: The results presented in this study indicate that Hed isolated from Dipsaci Radix has the potential to be developed as a healthcare food and functional material possessing anti-osteoporosis effects.

키워드

과제정보

This work was supported by a Research Grant of Andong National University.

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