骨髓间充质干细胞在Matrigel凝胶支架上的生长与变化张斌斌;高全文;李冰;黄沙;姚斌【摘要】背景:研究表明,Matrigel 作为一种细胞外基质复合物加入到细胞培养体系中,对细胞的增殖、分化、胶原分泌具有促进作用.目的:建立Matrigel复合骨髓间充质干细胞的三维培养模型,观察Matrigel三维培养条件下骨髓间充质干细胞的形态、增殖及存活情况.方法:全骨髓贴壁法分离培养骨髓间充质干细胞,进行成骨、成脂诱导鉴定;CCK-8测定第3代骨髓间充质干细胞的生长曲线;选取生长状态良好的第2代骨髓间充质干细胞,与Matrigel混合形成细胞凝胶复合物,采用相差显微镜和苏木精-伊红染色观察骨髓间充质干细胞的形态及增殖情况,Live/Dead染色评价细胞活性.结果与结论:①全骨髓贴壁法分离培养的比格犬骨髓间充质干细胞具备向成骨、成脂细胞分化的能力;②骨髓间充质干细胞的生长曲线呈 S 形,符合正常细胞的生长特性;③相差显微镜下可见骨髓间充质干细胞在Matrigel中逐渐伸长相互交联,呈三维网状生长,增殖状态良好,随着时间延长(7 d后),基质胶逐渐变软塌陷, 14 d时仍可见少部分细胞网状交联生长;苏木精-伊红染色可见第4天时细胞胞质较大,第7天时细胞细长、相互交联;④三维培养第1,4,7天,骨髓间充质干细胞在Matrigel中活性百分比分别为92.57%,95.54%,97.37%,呈逐渐升高趋势;⑤结果表明,骨髓间充质干细胞在Matrigel中的增殖能力较强,活性较高.%BACKGROUND: Matrigel as an extracellular matrix complex can facilitate cell proliferation, differentiation and collagen secretion in a cell culture system. OBJECTIVE: To establish a three-dimensional culture model of Matrigel combined with bone marrow mesenchymal stem cells (BMSCs) and to observe the morphology, proliferation and survival of BMSCs in the Matrigel three-dimensional culture model. METHODS: BMSCs were isolated and culturedby the whole bone marrow adherent method, followed by osteogenic and adipogenic induction and identification. The growth curve of passage 3 BMSCs was determined through the CCK-8 experiment. Passage 2 BMSCs were combined with Matrigel, and the morphology and proliferation of BMSCs were observed by hematoxylin-eosin staining under a phase contrast microscope. The viability of the cells was evaluated by theLive/Dead staining. RESULTS AND CONCLUSION: (1) BMSCs cultured bythe whole bone marrow adherent method had the ability to differentiate into osteoblasts and adipocytes. (2) BMSCs exhibited an "S"-shaped growth curve, which was consistent with the growth characteristics of normal cells. (3) Under the phase contrast microscope, BMSCs cultured by the Matrigel model were extended and interconnected in a three-dimensional network growth state with good proliferation. The Matrigel gradually became soft and collapsed over time (7days) and a few cellswere still in a network growth after 14 days. Hematoxylin-eosin staining results showed that the cell cytoplasm was larger at 4 days and the cells became thinned and mutually cross-linked at 7 days. (4) The active percentage of BMSCs in the Matrigel model was 92.57%, 95.54% and 97.37% at 1, 4, 7 days of culture, respectively. To conclude, BMSCs cultured on the Matrigel has good proliferation and high viability.【期刊名称】《中国组织工程研究》【年(卷),期】2018(022)013【总页数】6页(P1993-1998)【关键词】干细胞;骨髓间充质干细胞;三维培养;Matrigel;细胞增殖;细胞活性;北京市自然科学基金【作者】张斌斌;高全文;李冰;黄沙;姚斌【作者单位】山西医科大学口腔医学系,山西省太原市 030001;解放军总医院第一附属医院烧伤整形科,北京市 100048;山西医科大学口腔医院,山西省太原市030001;解放军总医院基础医学研究所,北京市 100853;解放军总医院基础医学研究所,北京市 100853【正文语种】中文【中图分类】R394.20 引言 Introduction组织工程是应用细胞生物学和工程学的原理，培养出新的具有特定功能和形态的组织器官，达到修复组织器官和重建功能的目的[1-2]。
