関連する実験動画
Updated: Aug 19, 2026

11:39
T Cells Capture Bacteria by Transinfection from Dendritic Cells
Published on: January 13, 2016
細胞内細菌の病原体に対する免疫におけるアルファベータとガンマデルタT細胞の異なる役割
P Mombaerts1, J Arnoldi, F Russ
1Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge 02319.
Nature
|September 2, 1993
まとめ
アルファベータT細胞とガンマデルタT細胞は,Listeria monocytogenesに対する免疫に不可欠です. ガンマ・デルタ・T細胞は,細菌感染において,二次感染に対する保護に影響を及ぼし,ユニークな規制的役割を果たします.
科学分野:
- 免疫学 免疫学とは
- 微生物学 微生物学とは
- 細胞生物学 細胞生物学
背景:
- Listeria monocytogenesのような細菌の病原体は,宿主免疫細胞の中で生き残ることができます.
- 免疫は,細胞内細菌の増殖を制御するためにTリンパ球に依存しています.
- Listeria monocytogenes感染におけるアルファベータおよびガンマデルタT細胞の特定の役割は,完全に理解されていません.
研究 の 目的:
- Listeria monocytogenes感染に対する免疫応答におけるアルファベータとガンマデルタT細胞の異なる役割を調査する.
- 各タイプのT細胞が,原発的および二次的感染耐性に対する貢献を決定する.
- 細菌の病原性におけるガンマデルタT細胞の調節機能を明らかにする.
主な方法:
- アルファベータまたはガンマデルタT細胞が欠けている遺伝子組み換えマウスを利用しました.
- 主要および二次感染をモデル化するために,リステリア・モノサイトゲネスに感染したマウス.
- バクテリアの負荷,免疫細胞の活動,および病変の発達を評価した.
主要な成果:
- アルファベータT細胞とガンマデルタT細胞は,Listeria monocytogenes感染の初期に早期の保護に貢献します.
- アルファベータT細胞は,二次感染に対する耐性の主要な媒介体であり,ガンマデルタT細胞は追加のサポートを提供します.
- ガンマデルタT細胞は,アルファベータT細胞欠乏症のマウスのワクチンによる保護を担っている.
- ガンマ・デルタ・T細胞の欠如は,非典型的な肝臓病変を引き起こし,独特の調節作用を示唆した.
結論:
- アルファベータT細胞とガンマデルタT細胞は,Listeria monocytogenesに対する適応免疫応答の重要な構成要素である.
- ガンマ・デルタ・T細胞は,細菌感染を制御し,保護的な免疫を媒介する際には,明確な規制機能を持っています.
- T細胞のサブセットを理解することは,細胞内細菌病原体に対する効果的なワクチンや治療法の開発に不可欠です.
関連する概念動画
Cell-mediated Immune Responses
Overview
Humoral Immune Responses
Overview
Special Features of Adaptive Immunity
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
B Cell Activation and Differentiation
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...
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...
Defense Against Bacterial Pathogens
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Immune Response Against Viral Pathogens
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

