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Platycodin D2 Mediates Incomplete Autophagy and Ferroptosis in Breast Cancer Cells by Regulating Mitochondrial ROS

文献类型： 外文期刊

作者： Li, Yaru 1 ; Lin, Haijiao 1 ; Sun, Yu 1 ; Zhao, Renshuang 1 ; Liu, Yunyun 1 ; Han, Jicheng 1 ; Zhu, Yilong 1 ; Jin, Ningyi 1 ; Li, Xiao 1 ; Zhu, Guangze 1 ; Li, Yiquan 1 ;

作者机构： 1.Changchun Univ Chinese Med, Coll Integrat Med, Key Lab Jilin Prov Tradit Chinese Med Prevent & Tr, Changchun, Peoples R China

2.Yanbian Univ, Med Coll, Yanji, Peoples R China

3.Changchun Univ Chinese Med, Ctr Childrens Clin, Affiliated Hosp, Changchun, Jilin, Peoples R China

4.Jilin Cent Hosp, Dept Neurol, Jilin, Peoples R China

5.Chinese Acad Agr Sci, Changchun Vet Res Inst, Changchun, Peoples R China

6.Changchun Univ Chinese Med, Affiliated Hosp, Dept Clin Lab, Jilin, Changchun, Peoples R China

关键词： autophagy; breast cancer; ferroptosis; mtROS; PD2

期刊名称：PHYTOTHERAPY RESEARCH （ 影响因子：6.3； 五年影响因子：7.0 ）

ISSN： 0951-418X

年卷期： 2025 年 39 卷 2 期

页码：

收录情况： SCI

摘要： Platycodin D2 (PD2) is a triterpenoid saponin extracted from the root of Platycodon grandiflorum, a common source of medicine and food. Platycodon grandiflorum saponins have anti-inflammatory, antioxidative, antitumor, and immunity-promoting effects. However, the effect of PD2 on breast cancer cells has not been reported. The purpose of this study is to explore the molecular mechanism underlying the effect of PD2 on breast cancer cells. We analyzed the inhibitory effects and pathways of PD2 on breast cancer by CCK-8 assay, WB assay, and immunofluorescence assay. Subsequently, autophagy and ferroptosis were analyzed using different inhibitors. It was found that PD2 caused mitochondrial damage and promoted mitochondrial reactive oxygen species (mtROS) production, leading to autophagy flux inhibition and ferroptosis. Blockage of autophagy flux and ferroptosis promoted each other, resulting in the inhibition of breast cancer cell proliferation. Similar results were obtained in the tumor-bearing model in vivo. PD2 promoted autophagy flux blockage and ferroptosis in breast cancer cells, which induced each other under the action of mtROS, thus inhibiting the proliferation of breast cancer cells. PD2 is a potential new strategy for the treatment of breast cancer.

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