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相关概念视频

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

14.6K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
14.6K
T Cell Types and Functions01:24

T Cell Types and Functions

2.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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相关实验视频

Updated: Jan 8, 2026

Traction Force Microscopy to Study B Lymphocyte Activation
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Traction Force Microscopy to Study B Lymphocyte Activation

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在T细胞的硬度波动.

Finn Bastian Molzahn1, Julien Husson2

  • 1Laboratoire d'Hydrodynamique (LadHyX), CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.

The European physical journal. E, Soft matter
|December 16, 2025
PubMed
概括
此摘要是机器生成的。

人类T细胞表现出动态度波动,而不是静态性质. 这些依赖于动因的振荡对于细胞机制至关重要,并可能影响免疫功能.

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Cortical Actin Flow in T Cells Quantified by Spatio-temporal Image Correlation Spectroscopy of Structured Illumination Microscopy Data
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Cortical Actin Flow in T Cells Quantified by Spatio-temporal Image Correlation Spectroscopy of Structured Illumination Microscopy Data

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Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
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Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

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相关实验视频

Last Updated: Jan 8, 2026

Traction Force Microscopy to Study B Lymphocyte Activation
09:28

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Cortical Actin Flow in T Cells Quantified by Spatio-temporal Image Correlation Spectroscopy of Structured Illumination Microscopy Data
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Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
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科学领域:

  • 细胞力学 细胞力学
  • 生物物理学的生物物理.
  • 免疫学 免疫学 免疫学

背景情况:

  • 阿克托米奥辛皮质对于细胞功能,如迁移和分裂至关重要.
  • 之前的研究发现了细胞形状和皮质厚度的时间变化.
  • 这些形态变化与细胞硬之间的联系尚未被探索.

研究的目的:

  • 调查T细胞的形态变化是否与硬度波动相关.
  • 描述人类CD4+T细胞的动态机械特性.
  • 要了解在这些动态中actin细胞骨的作用.

主要方法:

  • 采用了配置微和微管吸收来测量机械性能.
  • 应用拉特伦库林A来破坏行为蛋白细胞骨架.
  • 在低压下观察到微小管内细胞体的运动.

主要成果:

  • 很大一部分T细胞表现出自发的,周期性硬度波动 (30-35s周期).
  • 动氨酸细胞骨的破坏取消了这些刚性振荡.
  • 周期性细胞体运动与度峰值相关,表明动态行为.

结论:

  • 休息的T细胞具有动态的,振荡的机械特性,挑战了静态细胞力学的概念.
  • 这些刚度振荡是依赖于actin的,并且可能对像microvillar search这样的过程至关重要.
  • 这些发现强调了时间分辨率在研究细胞力学方面的重要性,并表明了对T细胞免疫功能的潜在影响.