在小细胞外囊中的Y盒结合蛋白1降低了介酶干细胞对骨质母细胞的分化 - - 对急性髓性白血病的影响
Venkatesh Kumar Chetty1, Jamal Ghanam1, Kristína Lichá1,2
1Department of Pediatrics III, University Hospital Essen, Essen, Germany.
Journal of extracellular vesicles
|March 18, 2024
概括
来自急性髓性白血病 (AML) 细胞的小细胞外囊 (sEV) 破坏骨髓中酶干细胞 (BM-MSC) 功能. 在AML-sEVs中的Y盒结合蛋白1 (YBX1) 减少了骨质分化,突出了一个新的治疗标.
科学领域:
- 血液学 血液学 血液学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 来自急性髓性白血病 (AML) 细胞的小细胞外囊 (sEV) 调节骨髓中酶干细胞 (BM-MSCs).
- 负责这些影响的AML-sEV内部的特定货物尚未完全理解.
- 了解这些相互作用对于破译骨髓微环境在AML中的作用至关重要.
研究的目的:
- 为了识别AML-sEV中影响BM-MSC差异化的生物载荷.
- 研究Y-box-binding protein 1 (YBX1) 在AML-sEV介导的对BM-MSCs的影响中的作用.
- 探索针对YBX1在AML中的治疗潜力.
主要方法:
- 从AML细胞和患者血中分离和表征sEVs,使用大小排除色谱和超过.
- 在用AML-sEVs治疗时评估BM-MSC的增殖和分化 (骨质,脂肪,体质)
- 蛋白质组分析 (LC-MS/MS) 用于识别AML-sEV和治疗的BM-MSC中的差异表达蛋白质,重点关注YBX1.1.
- 涉及YBX1-下调的AML-sEV的功能性测试,以评估救援对BM-MSC骨质分化的影响.
主要成果:
- AML-sEV增加了BM-MSC的增殖,但降低了关键的造血蛋白的调节.
- AML-sEVs显著抑制了BM-MSCs的骨质分化,但没有影响质或质分化.
- 在AML-sEVs治疗的AML-sEVs和BM-MSC中,Y-box-binding protein 1 (YBX1) 被确定为上调调,在儿童AML患者衍生的sEV中明显升高.
- 在AML细胞中YBX1的下调导致sEVs,拯救了BM-MSCs的骨质性分化能力.
结论:
- 含有YBX1的AML-sEV是破坏骨髓微环境的关键媒介.
- AML-sEVs降低了BM-MSCs的骨质分化,有助于AML的发病.
- 在AML-sEV中准YBX1通过恢复正常的骨髓功能为AML提供了一个有希望的治疗策略.
更多相关视频
相关概念视频
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
Regulation of Hematopoietic Stem Cells
3.2K
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...
3.2K
Lineage Commitment
3.0K
Commitment is the process whereby stem cells:
3.0K


