诱导多能干干细胞的型剖析来自Xeroderma PigmentosumC组患者的诱导多能干细胞
Almaqdad Alsalloum1,2, Natalia Mingaleva1,2, Ekaterina Gornostal1
1Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies, 125315 Moscow, Russia.
Cells
|December 24, 2025
概括
患者衍生的Xeroderma Pigmentosum组C (XP-C) iPSCs在培养过程中表现出基因组不稳定性,这是由于DNA修复缺陷造成的. 这凸显了需要对XP-C iPSCs进行仔细监测,以了解疾病机制.
科学领域:
- 遗传学 遗传学 是一个
- 基因组学就是基因组学.
- 干细胞生物学 干细胞生物学
背景情况:
- Xeroderma Pigmentosum C组 (XP-C) 是一种与缺陷DNA修复相关的遗传疾病,导致癌症风险.
- 在XPC基因突变损害核酸切除修复,导致基因组不稳定.
- 在XP-C患者中,患癌症的可能性很高.
研究的目的:
- 来自XP-C患者的诱导多能干细胞 (iPSC) 的创造和特征.
- 在扩展的体外培养过程中调查XP-C iPSCs的基因组稳定性.
- 模拟DNA修复缺陷在培养压力下对细胞进化的影响.
主要方法:
- 来自XP-C患者的生成iPSCs,该患者具有新的XPC基因突变.
- 评估了多能性标记物和三线化分化潜力.
- 在不同的培养通道进行全基因组测序和G带分析.
主要成果:
- XP-C iPSCs最初表现出正常的多能特征.
- 在延长培养过程中观察到渐进的型不稳定性.
- 随着时间的推移,获得的染色体异常,包括三症12和衍生X染色体,随着时间的推移而出现.
- 这些变化在早期段落中没有出现,这表明文化诱导的选择.
结论:
- XP-C iPSCs在培养压力下发展出染色体异常,由潜在的DNA修复缺陷驱动.
- 在XP-C细胞中失去GG-NER可能会加速DNA损伤的积累和错误分离.
- 持续的基因组监测对于用于研究的XP-C iPSCs至关重要.
- 这些iPSC为研究DNA修复缺陷和体外培养效应提供了有价值的模型.
相关概念视频
Induced Pluripotent Stem Cells
5.3K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
5.3K
Induced Pluripotent Stem Cells
27.2K
Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
27.2K
EPS and iPS Cells in Disease Research
3.3K
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,...
3.3K
Chromatin Modification in iPS Cells
2.1K
Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
2.1K
iPS Cell Differentiation
3.0K
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.
3.0K
Somatic to iPS Cell Reprogramming
2.5K
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
2.5K


