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相关概念视频

Hematopoiesis01:21

Hematopoiesis

5.0K
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...
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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...
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Production of Formed Elements01:34

Production of Formed Elements

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Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
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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
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
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

4.7K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
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相关实验视频

Updated: May 20, 2025

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis
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克隆性血液形成和固体癌症

Yen T M Nguyen1, Manabu Fujisawa2,3, Shumpei Ishikawa4,5

  • 1Department of Hematology, University of Tsukuba Hospital, University of Tsukuba, Tsukuba, Japan.

Cancer science
|May 19, 2025
PubMed
概括
此摘要是机器生成的。

克隆性血液形成,即衰老中的干细胞突变,与固体癌症有关. 这些突变可以推动癌症的进展和影响治疗,提供新的治疗点.

关键词:
在TET2突变中.在T细胞淋巴瘤.衰老的衰老 衰老的衰老克隆性血液形成 (clonal hematopoiesis) 是一种细胞形成的过程.固体癌症是一种固体癌症.瘤微环境中的微环境

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Characterizing Mutational Load and Clonal Composition of Human Blood
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Clonal Analysis of Embryonic Hematopoietic Stem Cell Precursors Using Single Cell Index Sorting Combined with Endothelial Cell Niche Co-culture
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相关实验视频

Last Updated: May 20, 2025

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis
08:00

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

Published on: May 26, 2021

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Characterizing Mutational Load and Clonal Composition of Human Blood
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Characterizing Mutational Load and Clonal Composition of Human Blood

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Clonal Analysis of Embryonic Hematopoietic Stem Cell Precursors Using Single Cell Index Sorting Combined with Endothelial Cell Niche Co-culture
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科学领域:

  • 血液学 血液学 血液学
  • 在瘤学瘤学.
  • 遗传学 遗传学是一种遗传学.

背景情况:

  • 克隆性造血 (CH) 涉及造血干细胞扩张与突变,在衰老中普遍存在.
  • 与CH相关的突变 (DNMT3A,TET2,ASXL1,TP53) 越来越多地与固体癌症有关.

研究的目的:

  • 审查CH和固体癌症之间的关系.
  • 讨论风险因素,对瘤微环境的影响以及临床影响.

主要方法:

  • 文献综述侧重于CH和固体癌症的同时发生.
  • 对突变流行率,风险因素和病原遗传机制的分析.

主要成果:

  • CH突变影响瘤发生,并塑造瘤的微环境 (免疫调节,炎症,血管生成).
  • CH既是癌症风险标志物,也是固体癌症进展的驱动因素.

结论:

  • CH具有显著的预后价值,并影响固体癌症的治疗反应.
  • CH为癌症管理提供了潜在的治疗点.