Abstract: It was revealed that the intravenous administration of HMGB-1 and S100A8 promoted the healing of skin ulcer by recruiting bone marrow-derived cells to the site of skin ulcer. Furthermore, when HMGB-1 was intravenously administered to cerebral infarction model mice after creation of cerebral infarction, bone marrow-derived cells expressing nerve cell markers were detected in their brain. A marked cerebral infarct-reducing effect was observed in mice intravenously administered with HMGB-1 as compared to the control. The post-cerebral infarction survival rate was increased in the intravenous HMGB-1 administration group. The involvement of bone marrow pluripotent stem cells in the process of bone fracture healing was assessed using mice, and the result demonstrated that bone marrow-derived cells distant from the damaged site migrated to the bone fracture site to repair the damaged tissue.

Abstract: Biologically low invasive vessels are filled with biological factors that have the activity of mobilizing specific functional cells in the body. The vessels are indwelled in the body. After specific functional cells are mobilized into the vessels, the vessels are removed from the body to collect functional cell populations mobilized to the vessels. Alternatively, the cells are directly collected from the vessels indwelled in the body.

Abstract: It was revealed that the intravenous administration of HMGB-1 and S100A8 promoted the healing of skin ulcer by recruiting bone marrow-derived cells to the site of skin ulcer. Furthermore, when HMGB-1 was intravenously administered to cerebral infarction model mice after creation of cerebral infarction, bone marrow-derived cells expressing nerve cell markers were detected in their brain. A marked cerebral infarct-reducing effect was observed in mice intravenously administered with HMGB-1 as compared to the control. The post-cerebral infarction survival rate was increased in the intravenous HMGB-1 administration group. The involvement of bone marrow pluripotent stem cells in the process of bone fracture healing was assessed using mice, and the result demonstrated that bone marrow-derived cells distant from the damaged site migrated to the bone fracture site to repair the damaged tissue.

Abstract: Biologically low invasive vessels are filled with biological factors that have the activity of mobilizing specific functional cells in the body. The vessels are indwelled in the body. After specific functional cells are mobilized into the vessels, the vessels are removed from the body to collect functional cell populations mobilized to the vessels. Alternatively, the cells are directly collected from the vessels indwelled in the body.

Abstract: Biologically low invasive vessels are filled with biological factors that have the activity of mobilizing specific functional cells in the body. The vessels are indwelled in the body. After specific functional cells are mobilized into the vessels, the vessels are removed from the body to collect functional cell populations mobilized to the vessels. Alternatively, the cells are directly collected from the vessels indwelled in the body.

Abstract: The present invention for the first time demonstrated that: (1) bone marrow-derived pluripotent tissue stem cells can be induced in peripheral blood by intravenously administering tissue extract prepared from isolated skin pieces; (2) the substance in the isolated skin pieces, which is responsible for mobilizing bone marrow-derived pluripotent tissue stem cells to peripheral blood, is HMGB1; and (3) HMGB1 with the activity of mobilizing bone marrow-derived pluripotent stem cells to peripheral blood can be easily purified from cultured cells.

Abstract: It was revealed that the intravenous administration of HMGB-1 and S100A8 promoted the healing of skin ulcer by recruiting bone marrow-derived cells to the site of skin ulcer. Furthermore, when HMGB-1 was intravenously administered to cerebral infarction model mice after creation of cerebral infarction, bone marrow-derived cells expressing nerve cell markers were detected in their brain. A marked cerebral infarct-reducing effect was observed in mice intravenously administered with HMGB-1 as compared to the control. The post-cerebral infarction survival rate was increased in the intravenous HMGB-1 administration group. The involvement of bone marrow pluripotent stem cells in the process of bone fracture healing was assessed using mice, and the result demonstrated that bone marrow-derived cells distant from the damaged site migrated to the bone fracture site to repair the damaged tissue.

Abstract: Biologically low invasive vessels are filled with biological factors that have the activity of mobilizing specific functional cells in the body. The vessels are indwelled in the body. After specific functional cells are mobilized into the vessels, the vessels are removed from the body to collect functional cell populations mobilized to the vessels. Alternatively, the cells are directly collected from the vessels indwelled in the body.

Abstract: The present inventors assessed the possibility that bone marrow-derived cells are mobilized to the grafted skin from nonskin tissues and contribute to skin tissue regeneration during the engraftment of grafted skin on biological tissues. As a result, the present inventors for the first time in the world demonstrated that: (1) a large number of bone marrow-derived cells are mobilized to grafted skin; (2) mobilized bone marrow-derived cells differentiate into any of dermal fibroblasts, adipocytes, muscle cells, vascular endothelial cells, and epidermal keratinocytes in grafted skin, and thus mobilized bone marrow-derived cells include bone marrow-derived mesenchymal stem cells; (3) S100A8 and S100A9 released from necrotic tissues of grafted skin are responsible for mobilizing bone marrow-derived mesenchymal stem cells to the grafted skin from peripheral blood; and (4) purified S100A8 and S100A9 promote the migration of mesenchymal stem cells isolated/cultured from the bone marrow.

Abstract: The present invention for the first time demonstrated that: (1) bone marrow-derived pluripotent tissue stem cells can be induced in peripheral blood by intravenously administering tissue extract prepared from isolated skin pieces; (2) the substance in the isolated skin pieces, which is responsible for mobilizing bone marrow-derived pluripotent tissue stem cells to peripheral blood, is HMGB1; and (3) HMGB1 with the activity of mobilizing bone marrow-derived pluripotent stem cells to peripheral blood can be easily purified from cultured cells.