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相关概念视频

iPS Cell Differentiation01:22

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The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
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Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
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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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Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
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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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Differentiation of Human Pluripotent Stem Cells Into Pancreatic Beta-Cell Precursors in a 2D Culture System
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工程性低免疫干细胞衍生的β细胞.

Benedikt J M Licht1, Garry P Duffy2,3, Ruth E Levey2

  • 1Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, University of Galway, Galway, Ireland. b.licht1@universityofgalway.ie.

Stem cell research & therapy
|November 4, 2025
PubMed
概括
此摘要是机器生成的。

产生来自低免疫干细胞的β细胞为1型糖尿病 (T1D) 提供了一个有前途的解决方案,通过克服供体短缺和减少免疫抑制. 这种方法旨在在不损害系统免疫力的情况下改善小岛移植结果.

关键词:
细胞疗法是一种细胞疗法.基因工程是一种基因工程.免疫水平低的人.岛屿移植移植的方法胰腺β细胞是胰腺β细胞.

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科学领域:

  • 生物医学工程 生物医学工程
  • 免疫学 免疫学 免疫学
  • 再生医学是一种再生医学.

背景情况:

  • 1型糖尿病 (T1D) 涉及胰腺β细胞的自身免疫破坏,需要胰岛素治疗.
  • 岛屿移植提供了一种再生方法,但面临着供体短缺,需要终身免疫抑制.
  • 像封装这样的当前策略在免疫隔离和移植存活方面存在局限性.

研究的目的:

  • 审查生物工程策略,用于制造由低免疫干细胞衍生的β细胞.
  • 讨论贝塔细胞治疗中免疫逃避的安全考虑和潜在的遗传点.

主要方法:

  • 审查干细胞分化协议的最新进展.
  • 探索基因工程技术,以赋予免疫低响应性.
  • 由自然免疫耐受性和CAR T细胞疗法所启发的免疫逃避途径的分析.

主要成果:

  • 来自干细胞的β细胞可以被设计为免疫低响应性.
  • 基因改造可以在没有系统性免疫抑制的情况下保护移植细胞.
  • 这一战略解决了当前小岛移植的关键局限性.

结论:

  • 来自高免疫干细胞的β细胞代表了T1D治疗的重大进步.
  • 对基因标和安全性的进一步研究对于临床转化至关重要.
  • 这种方法有可能彻底改变β细胞替代疗法.