Underlying mechanism of bone marrow mesenchymal stem cells in the repair of radiation-induced hematopoietic injury / 中国组织工程研究

ABSTRACT

BACKGROUND:Co-transplantation of bone marrow mesenchymal stem cells (BMSCs) and hematopoietic stem cells (HSCs) can improve the survival rate following radiation damage. OBJECTIVE:To review the mechanisms of BMSCs in hematopoietic reconstitution and immunomodulation after radiation damage. METHODS: Relevant articles included in the Web of science from 2005 to 2016 were retrieved, and the keywords were mesenchymal stem cells; radiation; radiation injury; hematopoietic stem cells; hematopoietic reconstitution; immunomodulatory in English. Then we sorted and analyzed the articles which were closely related to the theme. RESULTS AND CONCLUSION:BMSCs can repair broken DNA double bonds by autophagy and HR/NHEJ pathway; support and protect HSCs by intercellular interactions and paracrine action; and repair radiation-induced hematopoietic injury by inhibiting inflammation and immune responses to maintain HSC homeostasis. Therefore, BMSCs may function as an effective treatment for radiation-induced hematopoietic injury.