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Phenotypic characterization of the bone marrow stem cells used in regenerative cellular therapy

机译:再生细胞疗法中使用的骨髓干细胞的表型表征

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Regenerative medicine is a novel therapeutic method with broad potential for the treatment of various illnesses, based on the use of bone marrow (BM) stem cells, whose phenotypic characterization is limited. The paper deals with the expression of different cell membrane markers in mononuclear BM cells from 14 patients who underwent autologous cell therapy, obtained by medullary puncture and mobilization to peripheral blood, with the purpose of characterizing the different types of cells present in that heterogeneous cellular population and identifying the adhesion molecules involved in their adhesion. A greater presence was observed of adherent stem cells from the marrow stroma in mononuclear cells obtained directly from the BM; a larger population of CD90+ cells in mononuclear cells from CD34-/CD45- peripheral blood with a high expression of molecules CD44 and CD62L, which suggests a greater presence of mesenchymal stem cells (MSC) in mobilized cells from the marrow stroma. The higher levels of CD34+ cells in peripheral blood stem cells with a low expression of molecules CD117- and DR- suggests the presence of hematopoietic stem cells, hemangioblasts and progenitor endothelial cells mobilized to peripheral circulation. It was found that mononuclear cells from both the BM and peripheral blood show a high presence of stem cells with expression of adhesion molecule CD44 (MMC marker), probably involved in their migration, settling and differentiation.
机译:再生医学是一种新型的治疗方法,具有广泛的潜力,可以利用表型特征有限的骨髓干细胞来治疗各种疾病。该论文研究了通过髓样穿刺和动员至外周血获得的14例接受自体细胞治疗的患者的单核BM细胞中不同细胞膜标志物的表达,目的在于表征异种细胞群体中存在的不同类型的细胞并确定参与其粘附的粘附分子。直接从BM获得的单核细胞中观察到了来自骨髓基质的粘附干细胞的更多存在。来自CD34- / CD45-外周血的单核细胞中CD90 +细胞的数量更大,分子CD44和CD62L的表达高,这表明骨髓基质动员的细胞中存在更多的间充质干细胞(MSC)。外周血干细胞中CD34 +细胞的水平较高,而分子CD117-和DR-的表达较低,表明存在造血干细胞,成血管细胞和祖先内皮细胞动员到外周循环中。已经发现,来自BM和外周血的单核细胞都表现出高度存在的干细胞,其具有粘附分子CD44(MMC标记)的表达,可能参与了它们的迁移,沉降和分化。

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