猕猴胚胎干细胞定向分化为胶质祖细胞及胶质祖细胞迁移机 理研究
文献类型:学位论文
作者 | 谢正媛 |
学位类别 | 硕士 |
答辩日期 | 2011-05 |
授予单位 | 中国科学院研究生院 |
授予地点 | 北京 |
导师 | 季维智 |
关键词 | 猕猴胚胎干细胞(rESCs) NO 无血清培养体系 CO 胶质限定性前体细胞 整合素 细胞外基质 细胞迁移 |
其他题名 | Differentiation of Rhesus Monkey Embryonic Stem Cells into Glial Precursors and the Mechanism of the Glial Precursor Migration |
学位专业 | 细胞生物学 |
中文摘要 | 由于伦理和材料来源的限制,目前对灵长类早期神经发育缺乏深入地了解。与啮齿类动物相比,猕猴在遗传和生理上与人类更接近,因此猕猴胚胎干细胞(rESCs)研究具有重要的研究价值,不仅能为研究发育生物学基础理论提供良好的模型,而且可为细胞替代性治疗提供大量的供体细胞。本文以rESCs为主要研究对象,在rESCs定向分化为神经细胞的基础上着重研究通过无血清培养体系将猕猴的胚胎干细胞定向分化为胶质祖细胞及调控胶质祖细胞迁移的机理。主要结论如下:1) 通过无血清培养体系将猕猴的胚胎干细胞(ESCs)定向分化为A2B5+/ Nestin-胶质前体细胞(胶质祖细胞)。2)细胞外基质(ECM)和整合素α6,β1参与NO(由10μM—250μM SNP供体释放)的)rESCs来源的胶质限定性前体细胞(GRPs)的迁移,当胶质限定性前体细胞(GRPs)中的整合素α6,β1被抑制时,GRPs的迁移受到抑制。3)气体信号分子CO(由6-14 μg/ml Hematin 供体释放))促进rESCs来源的胶质限定性前体细胞(GRPs)的迁移,细胞外基质(ECM)和整合素α6,β1也参与了此过程。本实验的研究结果能为治疗神经系统退行性疾病提供阶段特异性的供体细胞,也证明了气体信号分子NO,CO能在体外介导的灵长类胶质细胞运动,为治疗胶质细胞瘤提供参考价值。 |
英文摘要 | So far the knowledge on the early neural development in primates is not well understood due to the restrictions of ethics and material sources. Rhesus monkey embryonic stem cells (rESCs) are ideal candidates for basic research and generation of donor cells for transplantation therapies because rhesus monkey takes advantages over rodents in close genetic and physiological relation to human. This study mainly foucused on the differentiation of glial precursors (GPs) from Rhesus monkey embryonic stem cells (rESCs) and the mechanism regulating the migration of glial precursors (GPs). The results were shown as follows:1. Purified A2B5+ GPs were differentiated from rESCs via serum-free differentiation system. 2. NO (released from 10μM—250μM SNP) regulated the migration of the GPs A2B5+/ Nestin- GPs derived from rESCs in vitro. And extracellualr matrix (ECM) and integrin α6, integrin β1 participate this progress. 3. CO (released from 6-14 μg/ml Hematin) regulated the migration of the A2B5+/ Nestin- GPs derived from rESCs in vitro. And extracellualr matrix (ECM) and integrin α6, integrin β1 also participate this progress. Hereby, all of the results in this study would provide stage-specific donor cells for therapy on degenerative diseases in the CNS and established that small gas signal moleculer CO regulate the glial precursors migration in vitro. It has the implication for the glioblastoma therapy. |
语种 | 中文 |
公开日期 | 2013-04-23 |
源URL | [http://159.226.149.42:8088/handle/152453/7377] ![]() |
专题 | 昆明动物研究所_生殖与发育生物学 |
推荐引用方式 GB/T 7714 | 谢正媛. 猕猴胚胎干细胞定向分化为胶质祖细胞及胶质祖细胞迁移机 理研究[D]. 北京. 中国科学院研究生院. 2011. |
入库方式: OAI收割
来源:昆明动物研究所
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