Effect of Water Extract of Rubi Fructus in RANKL-induced Osteoclast Differentiation

파골세포 분화에 미치는 복분자 물 추출물의 효과

  • Oh, Jae-Min (Department of Anatomy, Wonkwang Medical Science) ;
  • Lee, Myeung-Su (Department of Internal Medicine, Division of Rheumatology and Institute of Wonkwang Medical Science) ;
  • Kim, Jeong-Joong (Department of Anatomy, Wonkwang Medical Science) ;
  • Lee, Jeong-Hugh (Department of Anatomy, Wonkwang Medical Science) ;
  • Chae, Soo-Uk (Department of Orthopedic Surgery, Division of Endocrinology and Metabolism, University of Wonkwang College of Medicine, Sanbon Medical Center) ;
  • Kim, Ha-Young (Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Wonkwang College of Medicine, Sanbon Medical Center) ;
  • Jeon, Byung-Hoon (Department of Pathology, College of Oriental Medicine, Wonkwang College of Medicine) ;
  • Park, Kie-In (Division of Biological Science, School of Natural Science, Chonbuk National University) ;
  • Moon, Seo-Young (Department of Anesthesiology and Pain Medicine, University of Wonkwang College of Medicine, Sanbon Medical Center) ;
  • Cho, Hae-Joong (Department of Obstetrics and Gynecology, University of Wonkwang College of Medicine)
  • 오재민 (원광대학교 의과대학 해부학교실) ;
  • 이명수 (원광대학교 의과대학 류마티스내과학교실 및 원광의과학 연구소) ;
  • 김정중 (원광대학교 의과대학 해부학교실) ;
  • 이정휴 (원광대학교 의과대학 해부학교실) ;
  • 채수욱 (원광대학교 의과대학 정형외과학교실) ;
  • 김하영 (원광대학교 산본병원 내분비내과학교실) ;
  • 전병훈 (원광대학교 한의과대학 병리학교실) ;
  • 박기인 (전북대학교 자연과학대학 생물학과) ;
  • 문서영 (원광대학교 산본병원 마취통증의학과) ;
  • 조해중 (원광대학교 산본병원 산부인과학교실)
  • Received : 2011.07.14
  • Accepted : 2011.08.09
  • Published : 2011.08.25

Abstract

To prevent and treat the osteoporotic fracture, more attention should be paid in old age patients. Osteoclast which has ability to bone resorption is originated from hematopoietic cell line and plays a key role osteoporotic bone loss. Rubi Fructus has been widely used in Oriental medicine. Extracts of the leaves and fruit of Rubus species have been used in various countries as natural remedies to treat diabetes, infections, colic, and burns. However, the effect of extract of Rubi Fructus (fruit of Rubus coreanus Miq.) in osteoclast differentiation remains unknown. Thus, we evaluated the effect of Rubi Fructus on receptor activator of nuclear factor-kB ligand (RANKL)-induced osteoclast differentiation. Here we found that Rubi Fructus significantly inhibited osteoclast differentiation induced by RANKL. Rubi Fructus suppressed the activation of p38 pathway and NFkB in bone marrow macrophages (BMMs) treated with RANKL. Also, Rubi Fructus significantly inhibited the mRNA expression of c-Fos, tartrate-resistant acid phosphatase (TRAP), osteoclast-associated receptor (OSCAR), nuclear factor of activated T cells (NFAT)c1 and cathepsin K in BMMs treated with RANKL. Particularly, Rubi Fructus greatly inhibited the protein expression of c-fos and NFATc1. especially in the case of NFATc1 expression, a master transcription factor of the differentiation of osteoclasts is very important step for osteoclastogenesis. Taken together, our results demonstrated that Rubi Fructus may be useful treatment option of bone-related disease such as osteoporosis and rheumatoid arthritis.

Keywords

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