Ankrd26是一种响应视网膜酸的血膜结合和塑造蛋白,对适当的细胞分化至关重要
Anna Sofie Englisch1, Sarah Ann Hofbrucker-MacKenzie1, Maryam Izadi-Seitz1
1Institute of Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Nonnenplan 2-4, 07743 Jena, Germany.
Cell reports
|March 17, 2024
概括
安基林重复域26 (Ankrd26) 在血膜上的蛋白质集群驱动细胞分化. 破坏这种功能的突变与癌症有关,突出显示Ankrd26d.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 像视网膜酸这样的形态原体触发细胞分化,但组织细胞形状变化的下游效应者仍然不清楚.
- 异常的血信号经常与癌症的发展有关.
研究的目的:
- 识别和描述细胞分化中涉及的形态性线索的下游效应因子.
- 研究Ankrd26在细胞形状调节中的作用及其与癌症相关信号通路的联系.
主要方法:
- 确定Ankrd26是一种血局部化的蛋白质.
- 调查Ankrd26的自我协会和集群形成.
- 分析N端两结构在膜结合和曲中的作用.
- 在神经母细胞瘤分化模型中利用功能增加和功能丧失/救援研究.
- 检查一种与急性髓性白血病相关的Ankrd26突变体.
主要成果:
- Ankrd26自结合,并在血膜上形成集群,以应对视网酸.
- 对于Ankrd26的膜结合和曲能力来说,一个N终端的两边形结构至关重要.
- 一种与急性髓性白血病相关的Ankrd26突变体缺乏这种结构,损害了膜结合和细胞成型.
- Ankrd26突变破坏了视网膜酸/来自大脑的神经营养因子 (BDNF) 诱导的神经母细胞瘤分化.
结论:
- Ankrd26作为细胞分化平台在等离子体膜的关键组织者.
- 阐明了Ankrd26介导的膜组织的分子机制.
- 对Ankrd26的膜相关功能的损伤有助于癌症病理机制.
相关概念视频
01:21Cell Polarization by Rho Proteins
2.7K
Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
2.7K
01:26Receptor Tyrosine Kinases
12.9K
Receptor tyrosine kinases or RTKs are membrane-bound receptors that phosphorylate specific tyrosine on protein substrates. RTKs regulate cellular growth, differentiation, survival, and migration. They contain an extracellular ligand binding domain, a transmembrane domain, and a cytosolic tail with intrinsic kinase activity. Several extracellular signaling molecules activate RTKs in one or more ways and relay the signal downstream. Ligands such as platelet-derived growth factor (PDGF) or...
12.9K
01:16TGF - β Signaling Pathway
7.3K
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...
7.3K
01:12Role 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
01:51Determination
18.5K
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
18.5K
01:23Negative Regulator Molecules
35.4K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.4K