2. Academic Validation
  3. Swertiamarin, a natural steroid, prevent bone erosion by modulating RANKL/RANK/OPG signaling

Swertiamarin, a natural steroid, prevent bone erosion by modulating RANKL/RANK/OPG signaling

  • Int Immunopharmacol. 2017 Dec:53:114-124. doi: 10.1016/j.intimp.2017.10.022.
M I Hairul-Islam 1,  S Saravanan 2,  K Thirugnanasambantham 3,  M Chellappandian 4,  C Simon Durai Raj 5,  K Karikalan 6,  M Gabriel Paulraj 4,  S Ignacimuthu 7
Affiliations

Affiliations

  • 1 Biology Department, College of Science, King Faisal University, Hofouf, Saudi Arabia; Pondicherry Centre for Biological Sciences and Educational Trust, Pondicherry 605 005, India.
  • 2 Division of Ethnopharmacology, Entomology Research Institute, Loyola College, Chennai 600 034, Tamil Nadu, India; Pondicherry Centre for Biological Sciences and Educational Trust, Pondicherry 605 005, India.
  • 3 Pondicherry Centre for Biological Sciences and Educational Trust, Pondicherry 605 005, India.
  • 4 Division of Ethnopharmacology, Entomology Research Institute, Loyola College, Chennai 600 034, Tamil Nadu, India.
  • 5 Department of Pathology, Sri Ramachandra Medical College and Research Institute, Porur, Chennai 600116, Tamil Nadu, India.
  • 6 School of Bioscience and Technology, VIT University, Vellore 632 014, Tamil Nadu, India.
  • 7 Division of Ethnopharmacology, Entomology Research Institute, Loyola College, Chennai 600 034, Tamil Nadu, India. Electronic address: eri@loyolacollege.edu.
PMID: 29078090 DOI: 10.1016/j.intimp.2017.10.022
Abstract

Bone erosion is a central feature of rheumatoid arthritis (RA) that is characterized by the infiltration of the synovial lining by osteoclasts and lymphocytes. In the present study, swertiamarin a major secoiridoid glycoside was evaluated for anti-osteoclastogenic property to prevent bone erosion in Freund's complete Adjuvant (FCA) induced in-vivo model, in-vitro osteoblast and osteoclasts as well as in co-culture system and in-silico molecular docking analysis. The swertiamarin treatment decreased the expression of TRAP, RANKL, and RANK levels and increased the levels of OPG levels significantly in both in vitro and in vivo models. In in vitro, the compound treatment significantly increased the cell proliferation and ALP levels in osteoblast cells; the high proliferation (153.8600±5.23%) and ALP release (165.6033±4.13%) were observed at 50μg/ml concentration of swertiamarin treatment. At the same time the treatment decreased the TRAP positive cells in osteoclast cells; the high reductions of TRAP positive cells (39.32±3.19%) were observed at 50μg/ml of swertiamarin treatment. The treatment modulated the levels of pro-inflammatory cytokines, MMPs and NF-κB levels in osteoblast and osteoclast co-culture system. In in silico analysis swertiamarin had affinity towards the proteins RANK, RANKL and OPG residues with low binding energy -4.5, -3.92 and -5.77kcal/mol respectively. Thus, the results of this study revealed the anti-osteoclastogenic activity of swertiamarin on the prevention of bone destruction.

Keywords

Adjuvant induced animals; Bone erosion; Osteoblasts; Osteoclastogenesis; Osteoclasts; Swertiamarin.

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