相关实验视频
Updated: May 11, 2026
05:47
Isolation of Murine Lymph Node Stromal Cells
Published on: August 19, 2014
淋巴结中的空间组织的多细胞先天免疫反应限制了系统性病原体的传播
Wolfgang Kastenmüller1, Parizad Torabi-Parizi, Naeha Subramanian
1Lymphocyte Biology Section, Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA. kastenmullerw@mail.nih.gov
Cell
|September 18, 2012
概括
在淋巴结中战略位置的先天性免疫细胞迅速检测病原体. 这种早期的防御可以防止细菌在整个身体中传播.
科学领域:
- 免疫学 免疫学 免疫学
- 具有天生的免疫力.
- 淋巴系统生物学 淋巴系统生物学
背景情况:
- 淋巴系统运输液体和抗原,作为病原体传播的潜在途径.
- 淋巴结是启动对入侵微生物的免疫反应的关键地点.
- 淋巴结内有效的先天免疫反应对于预防系统性感染至关重要.
研究的目的:
- 研究细胞定位和细胞间通信在淋巴结中的作用,用于天生的免疫防御.
- 阐明先天性淋巴细胞为淋巴结内的抗菌素耐药性做出贡献的机制.
- 了解巨细胞对病原体的感知如何影响附近的先天性淋巴细胞的激活.
主要方法:
- 对淋巴细胞细胞群的空间分析相对于淋巴鼻层巨细胞.
- 检测由巨细胞产生的炎酶生成的细胞因子 (例如IL-18).
- 在刺激时,先天性淋巴细胞分泌的干扰素- (IFNγ) 的评估.
- 实验性操纵天生的免疫反应循环,观察对细菌传播的影响.
主要成果:
- 多种先天性淋巴细胞 (NK细胞,γδ T细胞,NKT细胞,先天性CD8+ T细胞) 位于哨兵巨细胞附近.
- 巨细胞在感知病原体时释放由炎酶体依赖的IL-18和其他细胞因子.
- 靠近允许先天性淋巴细胞快速接收细胞因子信号,从而导致快速的IFNγ分泌.
- 这种先天免疫循环的破坏有助于淋巴细胞传播细菌的全身传播.
结论:
- 淋巴结内的细胞定位和局部细胞因子信号传递对于天生的宿主防御至关重要.
- 由病原体感应巨细胞激活的先天性淋巴细胞,赋予抗菌素耐药性.
- 淋巴结作为先天免疫的活跃部位,对阻止病原体传播至关重要.
相关概念视频
01:23Introduction to Lymphatic and Immune System
Immunity is a crucial biological concept about our body's inherent capacity to prevent infections and diseases. A complex network of cells and tissues collectively known as the immune system facilitates this natural defense mechanism. The immune system plays an integral role in maintaining our health and well-being, shielding us from potential health threats.
The immune responses can be categorized into two types: innate and adaptive. Innate immunity comprises nonspecific defenses we are born...
The immune responses can be categorized into two types: innate and adaptive. Innate immunity comprises nonspecific defenses we are born...
01:28Functions of the Lymphatic and Immune System
The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
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01:18Lymphoid Cells and Tissues
Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
01:15Secondary Lymphoid Organs
Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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01:23Detailed Structure and Function of Lymph Nodes
Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
01:23Cells of the Adaptive Immune Response
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