In article number 1900773, Kun Na and co-workers report photosensitizer-labeled human mesenchymal stem cells (hMSCs-DPP). The hMSCs-DPP recognize and migrate towards the cancer. When light is irradiated over the cancerous area, the hMSCs are killed by reactive oxygen species and various cytokines are secreted, and T cells, NK cells, and APC cells accumulate inside the tumors to treat the tumors.
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Kim et al. (2019) studied this question.