Solanine induces ferroptosis in colorectal cancer cells through ALOX12B/ADCY4 molecular axis

作者：Xudong Ma, Yijun Li, Daoming Liang, Fan Jiang, Lu Zhang, Wanhong Song, Baosheng Wan, Chuqi Xia, Qiyu Lu · 发表于：Journal of Pharmacy and Pharmacology · 年份：2024 · DOI：10.1093/jpp/rgad122 · 被引用次数：18 · 研究领域：Ferroptosis and cancer prognosis、Immune cells in cancer、Potato Plant Research

OBJECTIVES: Colorectal cancer (CRC) is the fourth most commonly diagnosed cancer worldwide. Solanine is a phytochemical extracted from traditional Chinese medicine with widely reported anticancer effects. Here, we investigated the potential role of solanine in regulating ferroptosis in CRC cells and scrutinized the molecular mechanism. METHODS: Cell growth and cytotoxicity were examined using CCK-8 proliferation assay and lactate dehydrogenase assay. Oxidative stress was determined by measuring glutathione (GSH), malondialdehyde, and reactive oxygen species (ROS) levels. Subcellular changes in mitochondria were examined by transmission electron microscopy. Gene and protein expression levels were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Protein-protein interaction was determined by co-immunoprecipitation. KEY FINDINGS: Solanine arrested cell proliferation in CRC cells and induced typical ferroptotic changes. Solanine treatment promoted ROS production, lipid peroxidation, and cell membrane disruption, while the cellular level of antioxidant GSH was reduced upon solanine treatment. ALOX12B was identified as a molecular mediator of solanine to promote ferroptosis. Solanine treatment upregulated ALOX12B levels and silencing ALOX12B could suppress solanine-induced ferroptosis. Further, ADCY4 was found to physically associate with ALOX12B and maintain ALOX12B protein stability. Silencing ADCY4 destabilized ALOX12B and attenuated solanine-induced ferrop...