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美国麻省理工学院(MIT)Kelsch 等最新研究显示,脑部干细胞移植比预想的更为复杂。已知在发育的胚胎中,干细胞可以变成所有组成机体的各类细胞——皮肤、肌肉、神经、脑、血液等细胞。其中一些干细胞在成人中仍然存在,并产生如皮肤细胞等新细胞。干细胞治疗的构思就是利用这些细胞去修复被疾病所破坏的组织或器官。为了实现这一目的,干细胞必须根据需要变成肝细胞、心肌细胞或神经元等。Kelsch 等人只研究了成人神经干细胞。在干细胞领域,人们普遍认为脑修复的主要障碍仅仅在于如何使新
Recent research by KITCH, Massachusetts Institute of Technology (MIT), shows that brain stem cell transplantation is more complicated than expected. It is known that in developing embryos, stem cells can become all kinds of cells that make up the body - cells of the skin, muscles, nerves, brain, blood and the like. Some of these stem cells are still present in adults and produce new cells such as skin cells. The idea of stem cell therapy is to use these cells to repair the tissue or organ damaged by the disease. To do this, stem cells must become hepatocytes, cardiomyocytes, or neurons, etc., as needed. Kelsch et al. Studied only adult neural stem cells. In the field of stem cells, it is generally accepted that the main obstacle to brain repair lies only in how to make new