禽类多能性干细胞研究进展

胚胎干细胞是未分化的具有增殖和自我更新能力的细胞,并且能分化成所有类型的体细胞以及生殖细胞。它们提供了早期胚胎分化的体外模型,也是基因操作的重要靶细胞。禽类多能性干细胞培养最重要的应用领域是以干细胞体外遗传修饰、鉴定为技术平台的家禽转基因技术。通过此技术对禽类基因进行遗传修饰与操作,在胚胎发育基础研究、转基因禽类生产及家禽育种等方面有巨大的应用前景。但是禽类多能性干细胞培养的许多基本问题仍亟待解决,如探索其建系的培养条件、揭示其维持多能性和增殖能力的分子机制等。文章综述了禽类多能性干细胞的分离方法、体外分化能力、嵌合体形成以及基因修饰方面的研究进展及目前的研究局限。

Progress on the Avian Pluripotent Stem Cells

Pluripotent stem cells are undifferentiated cells capable of proliferation and self-renewal and have the capacity to differentiate into all somatic cell types and the germ line.They provide an in vitro model of early embryonic differentiation and are useful means for targeted manipulation of the genome.The avian transgenic technology is a key perspective to the commercial application of avian ES cell.In the future,the answers to fundamental questions regarding segregation of the avian germ line and the molecular basis of pluripotency should foster the full use of avian pluripotent stem cells.The article veviewed the research progress in the avian pluripotent stem cells about that isolating methods,differentiation potential in vitro,production of chimera and gene modification.