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Updated: Jun 30, 2025

Cytotoxic Efficacy of Photodynamic Therapy in Osteosarcoma Cells In Vitro
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Cytotoxic Efficacy of Photodynamic Therapy in Osteosarcoma Cells In Vitro

Published on: March 18, 2014

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The p53-mediated cell cycle regulation is a potential mechanism for emodin-suppressing osteosarcoma cells

Qian Zhang1, Shuli Hao2, Guangyou Wei3

  • 1Department of Pharmacy, Bozhou People's Hospital, Bozhou, 236800, Anhui Province, China.

Heliyon
|March 18, 2024
PubMed
Abstract

Insights

Emodin, a natural compound, effectively suppresses osteosarcoma cell growth by regulating the cell cycle through the p53 pathway. This study highlights emodin

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Osteosarcoma, the most common primary bone cancer, necessitates novel therapeutic strategies.
  • Emodin, an anthraquinone derivative, exhibits potential anticancer properties.
  • The proposed mechanism involves emodin-induced suppression of osteosarcoma via p53-mediated cell cycle regulation.

Purpose of the Study:

  • To investigate the effects of emodin on osteosarcoma cell viability and apoptosis.
  • To elucidate the role of p53 in emodin's mechanism of action.
  • To determine the impact of emodin on key cell cycle regulatory proteins.

Main Methods:

  • Assessed emodin's impact on viability and apoptosis across six osteosarcoma cell lines with varying p53 statuses.
  • Utilized p53 knockdown in U2OS cells to investigate the p53-dependent effects of emodin.
  • Quantified changes in p53, p21, cyclin proteins, and cell cycle progression following emodin treatment.

Main Results:

  • Emodin induced cell death and apoptosis in a dose-dependent manner across all tested osteosarcoma cell lines.
  • Low-dose emodin (1-10 μM) preferentially inhibited osteosarcoma cells expressing p53.
  • Emodin treatment modulated p53, p21, Cdk2, E2F, Cdk1, and RB expression, impacting cell cycle progression, with p53 knockdown abrogating these effects.

Conclusions:

  • Emodin effectively suppresses osteosarcoma cell growth.
  • The anticancer effects of emodin are mediated through p53-dependent cell cycle regulation.
  • Emodin represents a potential therapeutic agent for osteosarcoma.
Keywords:
Cell cycleEmodinOsteosarcomap53

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