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相关概念视频

Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Development of Immunocompetence01:22

Development of Immunocompetence

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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
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B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
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Overview
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Immunological Memory01:23

Immunological Memory

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Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
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Immunodeficiency Diseases01:25

Immunodeficiency Diseases

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Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
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相关实验视频

Updated: Jun 17, 2025

Isolation of Group 2 Innate Lymphoid Cells from Mouse Nasal Mucosa to Detect the Expression of CD226
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由ILC2衍生的LIF许可证从组织免疫到全身免疫

Mayuri Gogoi1, Paula A Clark2, Ana C F Ferreira2

  • 1MRC Laboratory of Molecular Biology, Cambridge, UK. mgogoi@mrc-lmb.cam.ac.uk.

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|August 7, 2024
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概括

来自先天性淋巴细胞 (ILC2) 的白血病抑制因子 (LIF) 对于免疫细胞离开肺部并前往淋巴结至关重要. 没有LIF,免疫细胞迁移被阻断,影响肺免疫和全身反应.

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科学领域:

  • 免疫学
  • 细胞生物学
  • 呼吸系统医学

背景情况:

  • 免疫细胞的贩运对于监视和免疫反应至关重要.
  • 粘附和化学因子受体引导免疫细胞到特定的组织和淋巴系统.
  • 2组先天性淋巴细胞 (ILC2) 在组织免疫中起作用.

研究的目的:

  • 研究由ILC2s产生的白血病抑制因子 (LIF) 在肺部免疫细胞迁移中的作用.
  • 了解LIF如何影响病毒感染和过敏时的免疫反应.
  • 阐明ILC2s调节免疫细胞指向淋巴结的机制.

主要方法:

  • 研究了ILC2s中断的LIF产生对免疫细胞迁移的影响.
  • 在病毒感染和过敏原挑战后分析肺部和淋巴结中的免疫细胞分布.
  • 检查了淋巴内皮细胞和免疫细胞中的化学激素 (CCL21) 和受体 (CCR7) 的表达.

主要成果:

  • 通过ILC2s破坏LIF的产生,阻止免疫细胞从肺部迁移到淋巴结.
  • 在没有LIF的情况下,血细胞树突细胞 (pDCs) 留在肺部,增强局部抗病毒免疫力.
  • 缺少LIF的慢性过敏原导致免疫细胞积累和肺部的三级淋巴状结构形成.
  • ILC2衍生的LIF诱导了淋巴内皮细胞的CCL21产生,促进了CCR7+免疫细胞向淋巴结转移.
  • 免疫细胞迁移到淋巴细胞的失败导致淋巴结反应受损.

结论:

  • 来自ILC2的LIF是免疫细胞从肺部退出的关键调节剂.
  • 控制组织局部免疫和全身免疫反应之间的平衡.
  • ILC2s产生的LIF会影响免疫系统对肺部病毒感染和过敏原的反应.