相关实验视频
Updated: Jul 10, 2025

08:01
Stimulation of Notch Signaling in Mouse Osteoclast Precursors
Published on: February 28, 2017
7.9K
在获得的无形性贫血患者中,NOTCH-1和T辅助细胞转录因子的表达增加
Vandana Sharma1, Manju Namdeo2, Prabin Kumar2
1Department of Hematology, All India Institute of Medical Sciences, New Delhi, India.
Iranian biomedical journal
|November 19, 2023
概括
NOTCH-1和T辅助细胞转录因子的基因表达在获得的无形成性贫血 (aAA) 中升高. 这些发现与疾病严重程度相关,可能导致aAA患者的骨髓破坏.
科学领域:
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
- 分子生物学分子生物学
背景情况:
- 获得性无塑性贫血 (aAA) 是一种自身免疫性疾病,其特征是由自侵袭性T细胞破坏造血原体.
- 通过与NOTCH-1相互作用的转录因子调节T细胞分化,影响T细胞系和骨髓 (BM) 微环境.
- 了解NOTCH-1和T辅助细胞转录因子在AAA病变发生中的作用至关重要.
研究的目的:
- 为了研究NOTCH-1和关键的T辅助细胞转录因子的基因表达水平,在患有获得性无塑性贫血的患者中.
- 为了将这些基因表达水平与疾病严重程度和血液学参数相关联.
主要方法:
- 使用定量实时PCR测量NOTCH-1,其配体 (DLL-1,JAG-1) 和T辅助细胞转录因子 (T-BET,GATA-3,ROR-γt) 的mRNA表达水平.
- 分析了aAA患者和健康对照的外周血液 (PB) 和骨髓 (BM) 的样本.
- aAA患者根据疾病严重程度进行了分层 (严重的无塑性贫血 [SAA],非常严重的无塑性贫血 [VSAA]和非严重的无塑性贫血 [NSAA]).
主要成果:
- 与对照组相比,aAA患者的NOTCH-1,T-BET,GATA-3和ROR-γT的mRNA表达显著增加.
- 患者和对照组之间没有观察到诺奇带mRNA表达的显著差异.
- 在SAA和VSAA患者中,基因表达水平高于NSAA患者,并且与血液学参数相关.
结论:
- NOTCH-1和T辅助细胞转录因子 (T-BET,GATA-3,ROR-γT) 之间的相互作用可能会驱动T辅助细胞的激活,增殖和极化,导致aAA的骨髓破坏.
- 观察到的基因表达与疾病严重程度的变异表明在AAA病变发生过程中发挥了作用.
相关概念视频
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
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...
2.1K
Notch Signaling Pathway
4.3K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.3K
Regulation of Hematopoietic Stem Cells
3.2K
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
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
Role of Hematopoietic Growth Factors
1.4K
Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
Thrombopoietin (TPO), mainly released by the liver,...
Thrombopoietin (TPO), mainly released by the liver,...
1.4K
Bone Marrow Sampling and Transplants
334
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...
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
334

