相关实验视频
Updated: Jul 11, 2026

11:50
Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
Published on: April 10, 2012
一种对巨细胞和树突细胞特有的克隆性骨髓原始体
Darin K Fogg1, Claire Sibon, Chaouki Miled
1INSERM, Laboratory of Mononuclear Phagocyte Biology, Avenir Team, Necker Enfants Malades Institute, 75015 Paris, France.
概括
研究人员确定了单细胞,巨细胞和树突细胞 (DC) 的常见骨髓原始体. 这一发现为单核细胞系统 (MPS) 提供了细胞基础,并阐明了免疫细胞的发育.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 血液形成 血液形成 血液形成
背景情况:
- 大细胞和树突细胞 (DCs) 是免疫和炎症反应的关键参与者.
- 这些细胞是单核细胞系统 (MPS) 的一部分,但它们的确切起源和血统尚不清楚.
- 了解这些关键免疫细胞的细胞起源对于理解免疫功能和功能障碍至关重要.
研究的目的:
- 识别和描述一个负责产生单细胞,巨细胞和脏树突细胞 (DCs) 的原始细胞.
- 研究单核细胞系统 (MPS) 内的各种髓状细胞群的共同起源的可能性.
- 为长期存在的MPS概念建立细胞和分子基础.
主要方法:
- 从小鼠骨髓中分离并对特定的原始细胞进行克隆分析.
- 在体内对已识别的原始体进行分化研究.
- 在体外分化试验中使用巨细胞殖民地刺激因子 (M-CSF) 和粒细胞巨细胞殖民地刺激因子 (GM-CSF).
主要成果:
- 一个单一的小鼠骨髓原始体被分离出来,它在体内专门产生单细胞,多个巨细胞子集和居住的 DC.
- 这种分化途径可以在体外成功复制使用M-CSF和GM-CSF细胞因子治疗.
- 这些发现表明,巨细胞和DCs可以从共享的祖先细胞群体中产生.
结论:
- 巨细胞和树突细胞 (DCs) 起源于一个共同的祖先,支持单核细胞系统 (MPS) 的概念.
- 这项研究为关键骨髓状免疫细胞的统一起源和分化提供了关键的细胞和分子证据.
- 已识别的原始体为了解和潜在地操纵免疫反应提供了一个新的目标.
相关概念视频
Lineage Commitment
Commitment is the process whereby stem cells:
Cell Diversity
The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular organisms...
Multicellular organisms...
Bone Cells and Tissue
Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
Production of Formed Elements
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...
Most HSCs commit to...
Classification of Leukocytes
Leukocytes are classified into two groups based on the presence or absence of cytoplasmic granules. Granular leukocytes, which contain granules, belong to the myeloid lineage and are divided into three subtypes: neutrophils, eosinophils, and basophils. These cells are roughly spherical and characterized by the granules in their cytoplasm.
Neutrophils are the most abundant type of granular leukocytes, comprising 50-70% of all leukocytes. They feature small, evenly distributed granules and a...
Neutrophils are the most abundant type of granular leukocytes, comprising 50-70% of all leukocytes. They feature small, evenly distributed granules and a...
Cells of the Adaptive Immune Response
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...

