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相关概念视频

Stem Cell Niche01:26

Stem Cell Niche

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The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
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Multipotency and Niche of Bulge Stem Cell01:06

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A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...
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Multipotency of Hematopoietic Stem Cells01:19

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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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Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
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Source And Potency Of Stem Cells01:27

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Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
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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.
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The two main cell...
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干细胞利基概念:寻找当前的专家共识

Igor Khlusov1, Larisa Litvinova2, Anastasia Efimenko3

  • 1Department of Morphology and General Pathology, Siberian State Medical University, 634050 Tomsk, Russia.

International journal of molecular sciences
|September 13, 2025
PubMed
概括

干细胞位对于组织修复至关重要,需要标准化的定义. 这项研究启动了专家的共识,以完善对干细胞的理解,特别是介质干细胞,以促进再生医学的进步.

关键词:
骨髓微环境 骨髓微环境专家的共识 专家的共识造血干细胞 造血干细胞层次结构的层次结构.哺乳动物 哺乳动物介酶体干细胞/干细胞干细胞的利基是干细胞.

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科学领域:

  • 再生医学是一种再生医学.
  • 生物工程是生物工程.
  • 干细胞生物学 干细胞生物学

背景情况:

  • 干细胞调节产后干细胞功能,包括自我更新和分化.
  • 利基概念对于再生医学,生物工程和3D生物打印至关重要.
  • 对干细胞利基原则的不一致解释阻碍了科学进步.

研究的目的:

  • 建立关于干细胞的核心原则的共识.
  • 开发一个标准化的框架,以了解干细胞的利基.
  • 为了解决干细胞利基概念的解释中的不一致性.

主要方法:

  • 一个建立共识的倡议,涉及再生医学和生物工程专家.
  • 开发和分发关于利基属性的问卷 (地形,构成,调节).
  • 在调查中专注于介质干细胞.

主要成果:

  • 一项试点调查正在进行中,以收集有关干细胞利基的专家意见.
  • 该调查涵盖了利基特点和监管机制的关键方面.
  • 该倡议旨在规范干细胞的定义和理解.

结论:

  • 对干细胞的统一理解对于促进再生医学的发展至关重要.
  • 专家的共识将为未来的研究提供一个标准化的框架.
  • 这个倡议支持干细胞利基假设50周年.