晚期胎儿造血失败是由于ZBTB11缺乏导致的,尽管HSC规范丰富
Huimin Cao1,2, Shalin H Naik3,4,5, Daniela Amann-Zalcenstein4,5,6
1Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia.
Blood advances
|August 11, 2023
概括
转录因子ZBTB11对于哺乳动物造血干细胞 (HSC) 的增殖和细胞周期调节至关重要. 删除ZBTB11会导致HSC过度规范,干性损失和由于造血失败导致的胚胎死亡.
科学领域:
- 血液学 血液学 血液学
- 发展生物学 发展生物学
- 分子遗传学 分子遗传学
背景情况:
- 血液形成产生多样化的血细胞,以满足基础需求和快速应对压力.
- 紧密协调的监管对于血统扩张和恢复到稳定状态水平至关重要.
- ZBTB11,一种转录因子,以前与斑马鱼髓状细胞的发育有关.
研究的目的:
- 研究ZBTB11在哺乳动物血液形成中的作用.
- 确定ZBTB11在造血干细胞 (HSC) 中的功能.
主要方法:
- 产生Zbtb11血液生成性淘汰 (Zbtb11hKO) 鼠标.
- 在E18.5.5时对胚胎死亡率和造血失败的分析.
- 在胎儿肝脏和体外中Zbtb11hKO HSCs的表征.
- 缺少Zbtb11的单细胞RNA测序的HSCs.
主要成果:
- 由于造血失败,Zbtb11的删除导致了E18.5的胚胎死亡率.
- Zbtb11hKO HSCs表现出过度规范,干性损失和差异化受损.
- Zbtb11hKO HSCs在细胞增殖和细胞循环进展中表现出细胞内在缺陷.
- 单细胞RNA测序揭示了Zbtb11缺乏的HSC中氧化酸化的下调和利基相关基因的失调.
结论:
- ZBTB11对于维持能够成熟的HSC和原生细胞池至关重要.
- ZBTB11在HSC增殖,细胞循环调节和保持干性方面发挥着细胞内在的作用.
- 由ZBTB11介导的基因调控网络对于正常的哺乳动物造血至关重要.
相关概念视频
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
Hematopoiesis
5.4K
The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
5.4K
Multipotency of Hematopoietic Stem Cells
3.1K
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...
3.1K
Overview of Hematopoiesis
4.1K
Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
4.1K


