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関連する概念動画

Adult Stem Cells01:33

Adult Stem Cells

Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously renew...
Hematopoiesis01:21

Hematopoiesis

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...
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

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...
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
Source And Potency Of Stem Cells01:27

Source And Potency Of Stem Cells

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...
Production of Formed Elements01:34

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...

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関連する実験動画

Updated: Jun 17, 2026

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors
12:03

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors

Published on: July 8, 2012

幹細胞から祖先細胞へ,そしてまたその逆へ.

András Simon1, Jonas Frisén

  • 1Department of Cell and Molecular Biology, Medical Nobel Institute, Karolinska Institute, SE-171 77 Stockholm, Sweden.

Cell
|March 14, 2007
PubMed
まとめ
この要約は機械生成です。

トランジット増幅原始細胞は,失われた組織幹細胞の代わりになることができます. この発見は,幹細胞再生と組織ホメオスタシスに光を当てています.

さらに関連する動画

Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells
08:00

Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells

Published on: January 12, 2015

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells
14:37

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Published on: November 1, 2017

関連する実験動画

Last Updated: Jun 17, 2026

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors
12:03

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors

Published on: July 8, 2012

Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells
08:00

Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells

Published on: January 12, 2015

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells
14:37

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Published on: November 1, 2017

科学分野:

  • 発達生物学 発達生物学とは
  • 幹細胞生物学 幹細胞生物学
  • 細胞再生 細胞再生

背景:

  • 組織幹細胞は,自己再生と分化を通じて組織ホメオスタシスを維持します.
  • 失われた時に幹細胞の運命は,再生生物学における重要な問題である.

研究 の 目的:

  • 失われた幹細胞を補うために幹細胞の子孫の可能性を調査する.
  • 組織再生と幹細胞維持のメカニズムを理解する.

主な方法:

  • この研究は,既存の文献と理論的考察に基づいたモデルを提案しています.
  • 提供された概要では,特定の実験方法については詳細に記載されていません.

主要な成果:

  • 幹細胞の子孫であるトランジット増幅原始細胞は,失われた幹細胞を補う能力を持っていると提案されています.
  • この置換メカニズムは,組織の整合性を維持するために決定的な役割を果たす可能性があります.

結論:

  • 幹細胞の損失は,その分化した子孫によって補償される可能性があります.
  • これは,原始細胞集団の潜在的再生能力を強調しています.