具有上调脂质代谢的MSC通过MDS中的外体CTP-1A阻断了血造干细胞的分化
Chunlai Yin1, Xue Yan1, Jinyi Ren1
1Department of Immunology, College of Basic Medical Science, Dalian Medical University, Dalian, 116044, Liaoning, China.
Stem cell research & therapy
|February 7, 2025
概括
骨髓质疏松症候群 (MDS) 扰乱了介质干细胞 (MSC) 的新陈代谢,损害了它们支持造血干细胞 (HSC) 的能力. 这种功能障碍通过外体传播,为MDS提供了新的治疗点.
科学领域:
- 血液学 血液学 血液学
- 干细胞生物学 干细胞生物学
- 代谢研究研究 代谢研究
背景情况:
- 骨髓质疏松症候群 (MDS) 是血液形成干细胞 (HSC) 的克隆性疾病,导致无效的血液形成和急性骨髓性白血病的风险.
- 骨髓微环境中的介质干细胞 (MSC) 参与了MDS的发病,但机制尚不清楚.
- 这项研究从代谢的角度研究了MDS-MSC对HSC的影响.
研究的目的:
- 研究从骨髓质疏松症候群 (MDS) 患者中介质干细胞 (MSC) 对造血干细胞 (HSC) 的代谢效应.
- 阐明改变的MSC代谢和外体信号传导在MDS病变发生过程中的作用.
- 通过了解MSCs-代谢-外体轴,确定MDS的潜在治疗点.
主要方法:
- 从MDS患者中分离了MSC并分析了它们的增殖,亡,分化和造血支持.
- 使用RT-PCR和西式涂抹检测到代谢分子表达,以确定代谢途径.
- 从MSC中分离和特征化了外体,并评估了它们对HSC的影响.
主要成果:
- MDS-MSCs显示功能受损:增殖,分化,造血支持减少,亡增加.
- 在MDS-MSC中观察到升级的脂质代谢,与其功能障碍有关.
- 来自MDS-MSCs的外体,富含卡尼丁棕基转移酶1A (CPT-1A),传递功能障碍到HSCs.
- 埃托莫克西尔 (ETO) 是一种CPT-1A抑制剂,在MDS-MSC中逆转了异常的脂质代谢.
结论:
- MDS骨髓微环境通过上调CPT-1A来破坏MSC新陈代谢,从而损害HSC的支持.
- 来自MDS-MSCs的外体,携带CPT-1A,调解抑制HSCs的抑制作用.
- 这些发现揭示了一个新的MDSMSCs-代谢-外体轴,并建议MDS的新治疗策略.
更多相关视频
12:03Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors
Published on: July 8, 2012
18.6K
10:17Assessment of Cellular Bioenergetics in Mouse Hematopoietic Stem and Primitive Progenitor Cells using the Extracellular Flux Analyzer
Published on: September 24, 2021
2.6K
相关概念视频
01:01Regulation of Hematopoietic Stem Cells
3.1K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.1K
01:19Mesenchymal Stem Cells
4.6K
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...
4.6K
01:19Multipotency of Hematopoietic Stem Cells
3.0K
The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
3.0K
02:23Abnormal Proliferation
4.4K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.4K