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相关概念视频

Regulation of Hematopoietic Stem Cells01:01

Regulation 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
Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

1.2K
Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
1.2K
Hematopoiesis01:21

Hematopoiesis

4.9K
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...
4.9K
Multipotency of Hematopoietic Stem Cells01:19

Multipotency 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
Lineage Commitment01:21

Lineage Commitment

2.9K
Commitment is the  process whereby stem cells:
2.9K
Overview of Hematopoiesis01:20

Overview of Hematopoiesis

3.6K
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...
3.6K

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相关实验视频

Updated: May 8, 2025

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors
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解读造血干细胞发育:关键信号通路和机制

Saori Morino-Koga1, Tomomasa Yokomizo2

  • 1Department of Cell Differentiation, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan.

Frontiers in cell and developmental biology
|December 24, 2024
PubMed
概括

造血干细胞 (HSC) 在发育过程中起源于内皮细胞. 了解涉及的信号和转录因子是从多能干细胞生成HSC的关键.

关键词:
大动脉 - 冠状腺 - 中膜 (AGM)内皮转化为血液构成的转变 (EHT)红骨髓原体 (EMP) 的前身造血干细胞 (HSC) 是一种造血干细胞.造血干细胞前体细胞 (pre-HSC) 的前体细胞内动脉造血集群 (IAHC) 是一个内动脉造血集群.

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Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells
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Retroviral Infection of Murine Embryonic Stem Cell Derived Embryoid Body Cells for Analysis of Hematopoietic Differentiation
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Last Updated: May 8, 2025

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors
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Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells
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Retroviral Infection of Murine Embryonic Stem Cell Derived Embryoid Body Cells for Analysis of Hematopoietic Differentiation
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科学领域:

  • 发育生物学是发展生物学.
  • 血液形成 血液形成 血液形成
  • 干细胞生物学 干细胞生物学

背景情况:

  • 造血干细胞 (HSC) 对于血液细胞的形成至关重要.
  • HSCs起源于怀孕中期的内皮细胞.
  • 这个过程涉及血源性内皮细胞过渡到前HSC,然后成熟的HSC.

研究的目的:

  • 审查转录因子在HSC诱导中的时间和作用.
  • 为了总结外部信号有效的体外HSC诱导.
  • 推进从多能干细胞诱导HSC的方法.

主要方法:

  • 对涉及HSC诱导的转录因子的文献综述.
  • 在体外培养系统中证明的外部信号的总结.

主要成果:

  • 确定关键的转录因子和信号通路.
  • 编制用于HSC诱导的有效体外培养条件.

结论:

  • 精确了解发育信号至关重要.
  • 这些知识将有助于从多能干细胞生成HSC,用于治疗应用.