Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, California.
Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, California.
Biol Psychiatry. 2023 Apr 1;93(7):616-621. doi: 10.1016/j.biopsych.2023.01.004. Epub 2023 Jan 13.
Human brain organoids are 3-dimensional cell aggregates that are generated from pluripotent stem cells and recapitulate features of the early developing human brain. Brain organoids mainly consist of cells from the neural lineage, such as neural progenitor cells, neurons, and astrocytes. However, current brain organoid systems lack functional vasculature as well as other non-neuronal cells that are indispensable for oxygen and nutrient supply to the organoids, causing cell stress and formation of a necrotic center. Attempts to utilize intracerebral transplantation approaches have demonstrated successful vascularization of brain organoids and robust neurodifferentiation. In this review, we summarize recent progress and discuss ethical considerations in the field of brain organoid transplantation.
人脑类器官是由多能干细胞生成的 3 维细胞聚集体,可重现早期人类大脑的特征。人脑类器官主要由神经谱系细胞组成,如神经祖细胞、神经元和星形胶质细胞。然而,目前的人脑类器官系统缺乏功能性血管以及其他对类器官的氧和营养供应必不可少的非神经细胞,导致细胞应激和坏死中心形成。利用脑内移植方法的尝试已经证明了脑类器官的血管化和强大的神经分化。在这篇综述中,我们总结了该领域的最新进展,并讨论了脑类器官移植的伦理考虑。