CSF2 and colorectal cancer: Dendritic cell- or ascite-derived exosomes loaded with granulocyte/macrophage-colony stimulating factor can be used to treat breast and colorectal cancer, and MSC-derived exosomes loaded with miR-133b, miR-146b, and miR-9 can be used to treat various cancers (10, 16, 25, 77).