Research on stem cell therapy is being conducted to explore its potential in treating various conditions, including neurodegenerative diseases and cerebral ischemia. Studies involving mesenchymal stem cells, including those derived from bone marrow, are investigating their neuroprotective properties and therapeutic efficacy. The use of stem cells, including those co-overexpressing certain factors, is being examined for its potential to promote tissue repair and treat conditions such as cardiac arrest-induced global cerebral ischemia.