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<p>Triggering ferroptosis has recently been recognized as a promising approach for cancer treatment. However, current ferroptosis inducers, such as glutathione peroxidase 4 (GPX4) inhibitors, face limitations in terms of druggability and safety. In this study, we performed a phenotypic screen of a 180-compound natural product library and identified (20S)-protopanaxatriol ((20)S-APPT), a ginsenoside derivative, as a potent ferroptosis inducer with a favorable safety profile both in vitro and in vivo. We demonstrated that (20)S-APPT induced ferroptosis by targeting the plasma membrane-localized CoQ<sub>10</sub> oxidoreductase FSP1. FSP1 inhibition promoted ACSL4-dependent arachidonic acid oxidation and mitochondrial ROS production, thereby increasing ferroptosis. Intriguingly, we revealed that FSP1 inhibition alone was sufficient to trigger ferroptosis in a subset of hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA) cells. Furthermore, the combined inhibition of FSP1 and γ-glutamylcysteine synthetase (GCS) synergistically induced ferroptosis in otherwise resistant cancer cells while sparing noncancerous cells. These results establish a previously unrecognized role for FSP1 in driving ferroptosis and highlight the therapeutic potential of cotargeting FSP1 and GCS in HCC and CCA.</p>

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Ginsenoside (20)S-APPT induces ferroptosis in hepatocellular carcinoma and cholangiocarcinoma by targeting FSP1

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • Fan-yu Liu,
  • Yuan-jie Yang,
  • Xue-long Wang,
  • Yan Hong,
  • Xiao-peng Ou-Yang,
  • Lu Chang,
  • Nan-lin Zhu,
  • Ao Huang,
  • Min-min Zhang,
  • Jia Liu,
  • Mei-yu Geng,
  • Ai-jun Shen

摘要

Triggering ferroptosis has recently been recognized as a promising approach for cancer treatment. However, current ferroptosis inducers, such as glutathione peroxidase 4 (GPX4) inhibitors, face limitations in terms of druggability and safety. In this study, we performed a phenotypic screen of a 180-compound natural product library and identified (20S)-protopanaxatriol ((20)S-APPT), a ginsenoside derivative, as a potent ferroptosis inducer with a favorable safety profile both in vitro and in vivo. We demonstrated that (20)S-APPT induced ferroptosis by targeting the plasma membrane-localized CoQ10 oxidoreductase FSP1. FSP1 inhibition promoted ACSL4-dependent arachidonic acid oxidation and mitochondrial ROS production, thereby increasing ferroptosis. Intriguingly, we revealed that FSP1 inhibition alone was sufficient to trigger ferroptosis in a subset of hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA) cells. Furthermore, the combined inhibition of FSP1 and γ-glutamylcysteine synthetase (GCS) synergistically induced ferroptosis in otherwise resistant cancer cells while sparing noncancerous cells. These results establish a previously unrecognized role for FSP1 in driving ferroptosis and highlight the therapeutic potential of cotargeting FSP1 and GCS in HCC and CCA.