通过SIRT6进行表观遗传重新连接的代谢基因编排MSC命运决定
Xueyang Liao1, Feifei Li1, Fanyuan Yu1,2
1State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.
Stem cells (Dayton, Ohio)
|June 12, 2024
概括
增强SIRT6的作用
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- SIRT6是一种具有多种酶活性的蛋白质,包括脱乙酶和核糖转移酶功能.
- SIRT6在表观遗传调节中发挥作用.
- 介酶干细胞 (MSC) 的命运决定对组织再生至关重要.
研究的目的:
- 研究SIRT6在MSC命运确定过程中的表观遗传调节,通过基因素脱乙烯化.
- 探索调节SIRT6活性用于硬组织再生的治疗潜力.
主要方法:
- 利用全性小分子专门控制SIRT6的3基组素脱乙烯化活动.
- 分析了SIRT6调制对MSC分化和基因表达的影响.
- 由SIRT6.6控制的已研究的特定基因组修饰 (H3K9ac和H3K56ac)
主要成果:
- 增强的SIRT6脱乙基化促进了MSCs的骨质原生血统承诺.
- 由SIRT6控制的H3K9ac和H3K56ac协调了代谢基因转录,调解了MSC命运.
- 调节SIRT6脱乙基化证明了对硬组织的合成代谢作用.
结论:
- SIRT6的基因组脱乙基化活性是MSC命运决定的关键调节者.
- 向SIRT6的表观遗传功能,特别是H3K9ac和H3K56ac脱乙烯化,为骨损失疾病和牙再生提供了一个有前途的治疗策略.
- 这项研究提供了关于SIRT6在硬组织再生中的作用的见解.
相关概念视频
Somatic to iPS Cell Reprogramming
2.2K
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...
2.2K
Methods of Nuclear Reprogramming
1.8K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.8K
Chromatin Modification in iPS Cells
1.6K
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...
1.6K
Maintenance of the ES Cell State
2.2K
The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
2.2K
Mesenchymal Stem Cells
4.7K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.7K
Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K


