関連する実験動画
Updated: May 7, 2026

13:05
De Novo Generation of Somatic Stem Cells by YAP/TAZ
Published on: May 7, 2018
11.3K
腸の幹細胞の膨張とYAPによる再生反応の制限
Evan R Barry1, Teppei Morikawa, Brian L Butler
1Stem Cell Program and Department of Hematology/Oncology, Children's Hospital, Boston, Massachusetts 02115, USA.
Nature
|November 27, 2012
まとめ
Yes-associated protein 1 (YAP) は,Wnt信号を制限することで,予期せぬ形で腸再生中の成長を抑制する. YAPの喪失は過敏症を引き起こし,ハイパープラジアとマイクロアデノマにつながり,結腸直腸がんの治療にも影響を及ぼします.
科学分野:
- 細胞生物学 細胞生物学
- 発達生物学 発達生物学について
- 腫瘍学 腫瘍学
背景:
- Wntシグナル伝達経路は,腸の自己再生と再生を促します.
- 再生中のWnt駆動の増殖を制御するメカニズムは完全に理解されていません.
研究 の 目的:
- 腸内再生中のWntシグナリングの調節におけるyes関連タンパク質1 (YAP) の役割を調査する.
- YAPが増殖を制御するメカニズムと大腸がんにおけるその影響を解明する.
主な方法:
- 腸の再生を研究するためにマウスとヒトのモデルを使用した.
- YAPのトランスジェニック発現と遺伝子喪失モデルを採用した.
- Wnt経路のコンポーネントとYAPの相互作用を調査しました. 混乱した (DVL) を含む.
- 人間の結腸直腸がんにおけるYAP発現を分析し,腫瘍異種移植に対するYAPの効果を試験した.
主要な成果:
- YAPは成長抑制機能を発揮し,Wnt標的遺伝子発現と腸内暗号を制限する.
- YAPの喪失は,Wnt過敏症,多発性,幹細胞の膨張,およびマイクロアデノマの形成につながる.
- サイトプラズミックYAPは,DVL核転位を制限することによって,Wnt信号を制限する.
- YAPサイレンシングは,攻撃的なヒト大腸がんと相関しており,YAP発現は腫瘍異種移植の成長を抑制する.
結論:
- YAPは,再生組織におけるWnt駆動の増殖に対する新しい対価として作用します.
- YAPの成長抑制作用は,大腸直腸悪性腫瘍に対する潜在的な治療標的を提供します.
関連する概念動画
Adult Stem Cells
27.9K
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...
27.9K
Renewal of Intestinal Stem Cells
2.7K
The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the...
2.7K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
1.8K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
1.8K
Stem Cell Therapy for Tissue Regeneration
3.8K
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...
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
3.8K
Methods of Nuclear Reprogramming
1.4K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.4K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
1.8K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
1.8K

