Protective effects of α2macroglobulin on human bone marrow mesenchymal stem cells in radiation injury.
Mol Med Rep
; 18(5): 4219-4228, 2018 Nov.
Article
en En
| MEDLINE
| ID: mdl-30221711
ABSTRACT
Osteoradionecrosis of the jaws (ORNJ) is a complication of oral and maxillofacial malignancy that arises following radiotherapy; progressive jaw necrosis severely decreases the quality of life of patients. Human bone marrow mesenchymal stem cells (hBMMSCs) are a cell type with selfrenewal and pluripotent differentiation potential in the bone marrow stroma. These cells are associated with bone tissue regeneration and are one of the primary cell types affected by bone tissue radiation injury. α2macroglobulin (α2M) is a glycoproteinrich macromolecule that interacts with cytokines, growth factors and hormones to serve a variety of biological roles. In addition, α2M possesses radioprotective effects. The aim of the present study was to investigate whether α2M has protective effects against radiation injury of hBMMSCs. Cell counting kit8 and colony formation assays were used to monitor cell proliferation. Western blot analysis and reverse transcriptionquantitative polymerase chain reaction were used to detect Beclin1, microtubuleassociated protein 1A/1B, sex determining region Y, Nanog, runtrelated transcription factor 2, osteoglycin and manganese superoxide dismutase expression. The formation of calcium nodules was evaluated by Alizarin red staining after osteogenic induction. Flow cytometric analysis of AnnexinV and propidium iodide double staining was used to detect changes in apoptosis rate. Alkaline phosphatase and superoxide dismutase activity were determined using colorimetric assays. Reactive oxygen species levels were detected using 2',7'dichlorodihydrofluorescein diacetate. The results of the present study revealed that α2M increased the rate of proliferation, reduced autophagy, alleviated pluripotent differentiation injury, increased the osteogenic differentiation ability and decreased the rate of apoptosis in hBMMSCs following irradiation via an antioxidative pathway. In conclusion, α2M exhibited protective effects against radiation injury in hBMMSCs and may be considered a potential therapeutic agent for the prevention and treatment of ORNJ.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Protectores contra Radiación
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Alfa 2-Macroglobulinas Asociadas al Embarazo
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Células Madre Mesenquimatosas
Tipo de estudio:
Etiology_studies
Idioma:
En
Revista:
Mol Med Rep
Año:
2018
Tipo del documento:
Article