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相关概念视频

Embryonic Stem Cells00:57

Embryonic Stem Cells

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Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...
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The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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早期人类发育的基于干细胞的模型

Lizhong Liu1, Jun Wu1,2,3

  • 1Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75235, USA.

Development (Cambridge, England)
|April 17, 2025
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概括
此摘要是机器生成的。

基于干细胞的胚胎模型 (SCBEMs) 为早期人类发育提供了一个窗口. 这些实验室培养的结构模仿植入前阶段,有助于研究复杂的发育过程.

关键词:
消化系统的消化人类多能干细胞是人类多能干细胞.植入植入植入植入植入植入植入植入基于干细胞的胚胎模型

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科学领域:

  • 发展生物学 发展生物学
  • 干细胞研究 干细胞研究
  • 胚胎学 胚胎学

背景情况:

  • 基于干细胞的胚胎模型 (SCBEM) 是干细胞的3D培养,模仿早期胚胎发育.
  • 这些模型对于研究人类早期发展至关重要,这是通过传统方法难以进入的阶段.
  • 在各种物种中开发了SCBEM,包括人类,小鼠,牲畜和非人类灵长类动物.

研究的目的:

  • 审查人类SCBEMs最近的进展.
  • 专注于重新总结人类发展的植入前阶段的模型.
  • 为了突出这些模型所阐明的发展方面.

主要方法:

  • 使用多能干细胞及其衍生物生成SCBEM.
  • 使用机械和/或化学线索的3D培养技术.
  • 在SCBEM中对血统分化,自我组织和形态发生的分析.

主要成果:

  • 开发能够模仿早期胚胎阶段的人类SCBEM.
  • 重点是代表植入周边时期的模型.
  • 展示SCBEMs能够回顾人类发展的关键方面的能力.

结论:

  • 人类SCBEM是研究早期人类胚胎发生的强大工具.
  • 这些模型提供了前所未有的访问至关重要的植入前阶段.
  • SCBEMs推进了我们对人类发展和相关疾病的理解.