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相关概念视频

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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Lineage Commitment01:21

Lineage Commitment

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Commitment is the  process whereby stem cells:
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Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

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Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

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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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Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
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Flow Cytometry to Estimate Leukemia Stem Cells in Primary Acute Myeloid Leukemia and in Patient-derived-xenografts, at Diagnosis and Follow Up
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免疫检查点调节急性髓性白血病的干细胞.

Chantal Reinhardt1,2,3, Adrian F Ochsenbein4,5

  • 1Tumor Immunology, Department for BioMedical Research (DBMR), University of Bern, Bern, 3008, Switzerland.

Leukemia
|April 2, 2025
PubMed
概括

急性髓性白血病干细胞表达免疫检查点,类似于抗原呈现细胞. 这些检查点调节白血病细胞的生长和存活,提供超出目前免疫检查点抑制剂的潜在新治疗点.

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科学领域:

  • 血液学 血液学 血液学
  • 免疫学 免疫学 免疫学
  • 癌症生物学 癌症生物学

背景情况:

  • 急性髓性白血病干细胞 (LSCs) 表达免疫检查点 (ICs) 和MHC分子,类似于抗原呈现细胞.
  • 骨髓中存在的LSC与免疫细胞相互作用,而ICs在固体瘤中调节抗瘤免疫力.
  • 免疫检查点抑制剂 (ICI) 在AML中表现出有限的疗效,尽管LCS上IC表达.

研究的目的:

  • 审查关于急性髓性白血病 (AML) 免疫检查点的最新数据.
  • 探索免疫球蛋白超级家族 (IgSF) 和瘤亡因子受体超级家族 (TNFRSF) 中选定的ICs在调节LSCs中的作用.
  • 根据LSC免疫检查点表达来确定AML潜在的新型治疗点.

主要方法:

  • 关于AML免疫检查点的最新数据的文献综述.
  • 专注于ICs调节LSCs,独立于它们的免疫功能.
  • 来自IgSF和TNFRSF家族的IC的分析.

主要成果:

  • LSCs表达MHC类I/II和各种免疫检查点连接体/受体.
  • 在AML爆发和LSC中,IC直接发出信号,影响自我更新,分化和扩张.
  • 在LSC上ICs的表达与较差的生存结果相关.

结论:

  • 在LSCs上的免疫检查点在免疫调节之外的白血病进展中发挥作用.
  • 选择的IC,特别是来自IgSF和TNFRSF,代表了AML的潜在新疗法标.
  • 对LSC特异性IC功能的进一步研究可能会改善AML治疗策略.