HES1通过抑制NFATc2介导的炎症来调节骨髓中介细胞功能
Anthony Z Zhu1, Zhilin Ma2, Emily V Wolff3
1Division of Oncology, University of Pittsburgh School of Medicine, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA.
Haematologica
|October 2, 2025
概括
毛状和增强分裂-1 (HES1) 维护骨髓中酶体 stromal 细胞 (MSC) 功能,并支持造血. 失去HES1会损害MSC,特别是在炎症性压力下,突出显示HES1.
科学领域:
- 血液学 血液学 血液学
- 干细胞生物学 干细胞生物学
- 分子生物学分子生物学
背景情况:
- 毛发和增强分裂-1 (HES1) 是一个调节细胞增殖和分化的Notch目标基因.
- 在压力条件下,HES1对血液形成至关重要.
- 在骨髓 (BM) 微环境中HES1的作用尚未完全理解.
研究的目的:
- 为了研究HES1在调节大介质细胞 (MSC) 恒温的作用,在BM的利基.
- 确定HES1在支持血液形成中的功能.
- 阐明HES1影响MSC及其支持能力的机制.
主要方法:
- 使用了一个BM特定的Hes1淘汰赛小鼠模型 (Hes1fl/flPrx1Cre).
- 评估MSC频率,自我更新和扩散.
- 在体外和体外对血液形成的支持功能进行评估.
- 进行了转录组分析和药理干预.
- 研究了与NFATc2促进体结合的HES1.
主要成果:
- HES1对于稳定状态血液形成是不可或缺的,但对于在脂聚糖 (LPS) 挑战下MSC至关重要.
- 在BM中Hes1的删除减少了MSC的频率,自我更新和增殖,损害了血液形成的支持.
- 缺少HES1会改变参与细胞代谢和炎症的基因的表达.
- 药物抑制炎症可以挽救Hes1缺乏的MSC表型和功能.
- HES1通过与其促进体结合,直接抑制NFATc2介导的炎症.
结论:
- HES1在维持骨髓MSC血静方面发挥着关键作用.
- HES1调节MSCs支持血液形成的能力,特别是在炎症条件下.
- 准HES1介导的炎症途径可能为血液形成支持提供治疗策略.
相关概念视频
Regulation of Hematopoietic Stem Cells
4.0K
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...
4.0K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.4K
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...
2.4K
NF-κB-dependent Signaling Pathway
9.8K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
9.8K
Mesenchymal Stem Cells
5.5K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
5.5K
TGF - β Signaling Pathway
10.5K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
10.5K
Multipotency of Hematopoietic Stem Cells
3.8K
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...
3.8K


