Related Experiment Video

Updated: Feb 28, 2026

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
11:47

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders

Published on: June 8, 2014

12.2K

A Novel Nrf2 Activator Suppresses Osteoclastogenesis and Ovariectomy-Induced Bone Loss by Directly Interfering

Shengbin Huang1, Lele Yi2, Yichi Zhang1

  • 1Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.

Journal of Medicinal Chemistry
|February 27, 2026
PubMed

Insights

This study introduces 5-selenyl-flavone compound 5c as a novel activator of the Nrf2 signaling pathway. Compound 5c effectively inhibits osteoclastogenesis, offering a promising new therapeutic strategy for osteoporosis treatment.

Area of Science:

  • Medicinal Chemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Osteoporosis treatment faces challenges with existing drugs causing side effects and limited efficacy.
  • Activating the Nrf2 pathway is a potential therapeutic strategy for osteoporosis by attenuating osteoclastogenesis.
  • No Nrf2 activators are currently in clinical trials for osteoporosis.

Purpose of the Study:

  • To synthesize and evaluate a series of 5-selenyl-flavone compounds as potential osteoporosis therapeutics.
  • To identify potent Nrf2 activators with anti-osteoporotic activity.
  • To elucidate the mechanism of action of the identified compounds.

Main Methods:

  • Synthesis of 5-selenyl-flavone derivatives.
  • In vitro assessment of inhibitory effects on RANKL-induced osteoclastogenesis.
  • In vivo efficacy testing in an osteoporosis mouse model.
  • Mechanistic studies involving Nrf2 signaling pathway and Keap1-Nrf2 interaction.

Main Results:

  • Compound 5c demonstrated potent suppression of osteoclast formation, resorption, and osteoclast-specific gene/protein expression in vitro.
  • Compound 5c showed significant efficacy in an in vivo osteoporosis mouse model.
  • Mechanistically, 5c activated the Nrf2 pathway by disrupting the Keap1-Nrf2 interaction.

Conclusions:

  • 5-selenyl-flavone derivative 5c is a potent Nrf2 activator with significant anti-osteoporotic activity.
  • Compound 5c represents a promising novel therapeutic candidate for osteoporosis.
  • The study highlights the potential of targeting the Keap1-Nrf2 interaction for osteoporosis treatment.

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