相关实验视频
Updated: Jan 9, 2026

08:04
Visualizing the Early Stages of Phagocytosis
Published on: February 3, 2017
17.2K
单细胞转录学揭示了上皮细胞逐步转化为非专业的细胞的过程
Caique Almeida Machado Costa1, Cristian Alejandro Santiago-Santiago1, Yi-Chun Huang1
1Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, Tulane Cancer Center, United States of America.
PLoS genetics
|December 4, 2025
概括
表皮细胞转化为非专业细胞 (NPP),以清除碎片. 这项研究揭示了NPP成熟的三个转录阶段,确定了JNK-Jra-Arp2/3通路对于这种细胞过渡至关重要.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 长皮细胞分化为非专业的细胞 (NPPs) 对组织稳态和亡残骸清除至关重要.
- 在Drosophila卵巢中,这种从上皮转变为NPP的遗传控制尚未完全理解.
研究的目的:
- 为了阐明控制表皮细胞分化成Drosophila中的NPPs的遗传机制.
- 描述在核电站成熟过程中所涉及的转录动态和关键监管途径.
主要方法:
- 利用Drosophila模型与Notch细胞内域 (NICD) 的过度表达来诱导上皮细胞到NPP的过渡.
- 使用单细胞RNA测序和轨迹分析来识别转录阶段.
- 执行了SCENIC,ChiP-seq和功能测试,以识别和验证关键监管者.
主要成果:
- 确定了NPP成熟的三个不同的转录阶段:代谢激活,细胞骨重塑和自.
- 发现了JNK效应器Jun相关抗原 (Jra) 和Arp2/Arp3作为细胞骨重塑的关键调节者.
- 证实JNK-Jra-Arp2/3轴对于核电站分化过程中的细胞质膨胀和碎片清除至关重要.
结论:
- 该研究描绘了核电站差异化的转录格局,揭示了不同的成熟阶段.
- JNK-Jra-Arp2/3信号通路在调节核电站功能所需的细胞骨动力学方面发挥着关键作用.
- 这项工作提供了对细胞细胞分化和组织修复背后的分子机制的重要见解.
相关概念视频
Immune Surveillance by NK Cells and Phagocytes
7.8K
Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
7.8K
Cells of the Innate Immune Response
8.5K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
8.5K
Differentiation of Common Myeloid Progenitor Cells
3.9K
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...
3.9K
Phagocytosis of Apoptotic Cells
4.9K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
4.9K
Forced Transdifferentiation
2.3K
Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
Artificial...
2.3K
Phagocytosis
92.5K
Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis (“cellular eating”) is one of three major types of endocytosis. Cells use phagocytosis to take in large objects—such as other cells (or their debris), bacteria, and even viruses.
92.5K

