AGENT THÉRAPEUTIQUE ASSOCIÉ À L'INHIBITION DE LA PROLIFÉRATION ET DE LA MÉTASTASE DE TUMEURS, COMPRENANT DES EXOSOMES LIBÉRÉS PAR DES CELLULES T CYTOTOXIQUES ET CIBLANT LES CELLULES CANCÉREUSES STROMALES/MÉSENCHYMATEUSES
[Problem to be solved] To provide a therapeutic agent which can suppress cell proliferation and metastasis of a tumor or the like. [Solution] Provided is a therapeutic agent for cell-proliferative diseases, which comprises extracellular vesicles (exosomes) released from cytotoxic T cells. The therapeutic agent targets cancer stromal / mesenchymal cells and can suppress the proliferation and metastasis of a tumor including cancer.