Synthetic E-guggulsterone derivative GSD-1 inhibits NF-κB signaling and suppresses the metastatic potential of breast cancer cells

Biomed Pharmacother. 2021 Aug:140:111737. doi: 10.1016/j.biopha.2021.111737. Epub 2021 May 18.

Abstract

Guggulsterone (GS) [4,17(20)-pregnadiene-3,16-dione], is the main active phytosterol constituent in guggul, the gum resin of Commiphora wightii (Arnott.) Bhand./Commiphora mukul Engl. tree, and is known for its medicinal effects. In this study, we report that GSD-1, a structurally-related synthetic GS derivative, strongly inhibits NF-κB activation induced by TNF-α. GSD-1 prevented the nuclear translocation of p65 through the blockade of IκBα degradation and p65 phosphorylation, and further inhibited the activation of upstream kinases, including transforming growth factor-β activated kinase 1 (TAK1), IκB kinase (IKK) α, and IKKβ. Furthermore, GSD-1 inhibited the cell-intrinsic activation of NF-κB, and exerted its direct anti-cancer and anti-metastatic effects in both murine and human breast cancer cell lines. This study demonstrated GSD-1 to be an attractive compound to target NF-κB activation that has potential for treating breast cancer growth and metastasis.

Keywords: Anti-cancer; Breast cancer; Guggulsterone; Inflammatory signal; Metastasis; NF-κB.

MeSH terms

  • Animals
  • Antineoplastic Agents / pharmacology*
  • Breast Neoplasms / drug therapy*
  • Breast Neoplasms / pathology
  • Cell Line, Tumor
  • Humans
  • Mice
  • NF-kappa B / antagonists & inhibitors*
  • Pregnenediones / pharmacology*
  • Signal Transduction / drug effects
  • Tumor Necrosis Factor-alpha / pharmacology
  • Wound Healing / drug effects

Substances

  • Antineoplastic Agents
  • NF-kappa B
  • Pregnenediones
  • Tumor Necrosis Factor-alpha