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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...
3.2K
Hematopoiesis01:21

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
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

837
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
837
Tumor Immunotherapy01:27

Tumor Immunotherapy

575
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
575
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

363
Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
363
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

3.2K
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...
3.2K

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相关实验视频

Updated: Jul 26, 2025

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
09:01

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells

Published on: March 7, 2025

456

克隆性血液形成:固体瘤免疫接口的更新和影响

Marco M Buttigieg1, Michael J Rauh1

  • 1Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada.

JCO precision oncology
|June 21, 2023
PubMed
概括

与年龄相关的克隆造血 (CH) 影响癌症的发展和结果不同. 了解CH遗传亚型是解释其对瘤和精密瘤学治疗的多种影响的关键.

科学领域:

  • 血液学 血液学 血液学
  • 在瘤学瘤学.
  • 遗传学 是一个遗传学.

背景情况:

  • 较大的研究表明,与年龄相关的克隆性血液形成 (CH) 与癌症发生率,患病率和结果有不同的关联.
  • 冠状动脉疾病涉及与年龄相关的突变造血细胞扩张.
  • 人们越来越多地认识到CH的遗传亚型,为癌症生物学提供了洞察力.

研究的目的:

  • 更新对CH在精密瘤学中的影响的理解.
  • 建议研究和临床问题来管理癌症患者的CH.

主要方法:

  • 审查最近的大规模患者和人口队列研究.
  • 对CH的遗传亚型的分析.
  • 与CH相关的瘤免疫接口的探索.

主要成果:

  • CH显示了与癌症发展和结果的差异性关联.
  • 遗传CH亚型有助于解释CH对瘤发生的异质影响.
  • CH影响瘤免疫接口,影响治疗反应.

结论:

  • CH在瘤学中扮演着重要的,多方面的角色.

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A Human Peripheral Blood Mononuclear Cell PBMC Engrafted Humanized Xenograft Model for Translational Immuno-oncology I-O Research
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A Human Peripheral Blood Mononuclear Cell PBMC Engrafted Humanized Xenograft Model for Translational Immuno-oncology I-O Research

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Published on: March 7, 2025

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Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis
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  • 需要进一步的研究来利用CH来改善癌症管理.
  • 解决关键的研究和临床问题对于优化CH在精密瘤学中的作用至关重要.