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Sinularin Selectively Kills Breast Cancer Cells Showing G2/M Arrest, Apoptosis, and Oxidative DNA Damage

Hurng-Wern Huang1, Jen-Yang Tang2,3, Fu Ou-Yang4,5

  • 1Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan. sting@mail.nsysu.edu.tw.

Molecules (Basel, Switzerland)
|April 13, 2018
PubMed

Insights

The marine compound sinularin selectively kills breast cancer cells by inducing cell cycle arrest, apoptosis, and DNA damage. This natural product shows promise as a targeted cancer therapy.

Area of Science:

  • Marine Natural Products
  • Cancer Biology
  • Cellular Mechanisms

Background:

  • Sinularin, a compound from marine soft corals, exhibits antiproliferative effects against various cancers.
  • The selective cancer-killing potential of sinularin remains underexplored.

Purpose of the Study:

  • To investigate the selective killing effects of sinularin on breast cancer cells.
  • To elucidate the underlying mechanisms of sinularin-induced cancer cell death.

Main Methods:

  • Cell viability assays (MTS) comparing cancer and normal breast cells.
  • Flow cytometry for cell cycle analysis (7-AAD) and apoptosis (Annexin V/7-AAD).
  • Western blotting for apoptosis markers (PARP, caspases) and oxidative stress indicators (ROS, 8-oxodG).

Main Results:

  • Sinularin dose-responsively reduced breast cancer cell viability while sparing normal cells.
  • Induced G2/M cell cycle arrest and apoptosis in SKBR3 cells.
  • Triggered oxidative stress, DNA damage, and caspase activation, which were partially inhibited by N-acetylcysteine (NAC).

Conclusions:

  • Sinularin demonstrates selective killing of breast cancer cells.
  • Mechanisms include G2/M arrest, apoptosis induction, and oxidative DNA damage.
  • Sinularin represents a potential therapeutic agent for breast cancer treatment.
Keywords:
SKBR3apoptosismarine natural productoxidative stresssoft coral

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