Tumor-derived extracellular vesicles (EVs) critically regulate tumor development and progression. Here the authors show that, in a mouse model of breast cancer, miR-9-5p-loaded EVs promote cholesterol biosynthesis and conversion into the oncometabolite 25-hydroxycholesterol, favoring immune evasion and promoting liver metastasis.
- Mei-Xin Li
- Sheng Hu
- Wei Yan