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相关概念视频

Hematopoiesis01:21

Hematopoiesis

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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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Overview of Hematopoiesis01:20

Overview of Hematopoiesis

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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...
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Erythropoiesis01:14

Erythropoiesis

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Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia,...
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Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

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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,...
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Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

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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...
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Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

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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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在正常和恶性血液形成的EPITRANSCRIPTOMIC进展.

Maria Eleftheriou1,2,3, James Russell1,2, Konstantinos Tzelepis4,5,6,7

  • 1Cambridge Stem Cell Institute, University of Cambridge, Cambridge, UK.

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概括

RNA修饰,或表体转录组,调节血液细胞的发育和癌症. 针对这些RNA标记及其酶显示出治疗血液癌症和改善诊断的前景.

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Identification of Key Factors Regulating Self-renewal and Differentiation in EML Hematopoietic Precursor Cells by RNA-sequencing Analysis
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科学领域:

  • 分子生物学分子生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 血液学 血液学 血液学

背景情况:

  • RNA的修改形成了表转录组,这是一个控制RNA命运的调节层.
  • 这些修改对于造血干细胞功能,血统发展和免疫力至关重要.
  • RNA修饰的失调与白血病的进展和治疗耐药性有关.

研究的目的:

  • 审查与正常和恶性血液形成相关的RNA修饰和编辑事件.
  • 要突出特定的修改 (m6A,m5C,m7G,ac4C, Ψ,A-to-I编辑,RNA糖化) 和酶 (METTL3,METTL1,ADAR1,NAT10). 为了突出特定的修改 (m6A,m5C,m7G,ac4C, Ψ,A-to-I编辑,RNA糖化) 和酶 (METTL3,METTL1,ADAR1,NAT10).
  • 讨论在血液癌症中准RNA修饰酶的治疗潜力.

主要方法:

  • 文献综述专注于血液形成中的RNA修饰.
  • 分析特定RNA修饰和酶在白血病中的作用.
  • 检查新兴的治疗策略和诊断应用.

主要成果:

  • 特定的RNA修饰和像METTL3这样的酶对于白血病干细胞程序,免疫逃避和治疗耐药性至关重要.
  • 针对RNA修饰酶的抑制剂正在临床开发中,显示出治疗前景.
  • 脊髓转录分析分析可以增强疾病分层和最小残留疾病监测.

结论:

  • RNA的修改是血液癌症生物学的核心.
  • 向表皮转录组为血液癌症治疗提供了新的途径.
  • 整合表体转录学数据可以改善诊断和治疗策略.