関連する実験動画
Updated: Aug 17, 2026

13:08
Expansion of Human Peripheral Blood γδ T Cells using Zoledronate
Published on: September 9, 2011
抗原特異のガンマデルタT細胞受容体を持つリンパ球は,ヒトの感染症の病変に蓄積する
R L Modlin1, C Pirmez, F M Hofman
1Section of Dermatology, University of Southern California School of Medicine, Los Angeles 90033.
Nature
|June 15, 1989
まとめ
ガンマ・デルタ・T細胞は,珍しい免疫細胞のタイプであり,麻痺の小胞腫では有意に増加しています. これらの細胞は,ミコバクテリアの抗原に特異的に反応し,感染中に花粉腫形成の役割を示唆しています.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- 感染症 感染症は感染症です.
背景:
- 主にアルファベータT細胞受容体 (TCR) を有するT細胞は,自己メジャーヒストコンパティビリティ複合体 (MHC) の文脈の中で外来抗原を認識します.
- T細胞の明確なサブポピュレーションは,ガンマデルタTCRを表現し,その特異性と機能の理解は限られている.
- ガンマデルタT細胞は,通常,リンパ性臓器,血液,皮膚で低周波で発見されます.
研究 の 目的:
- ガンマ・デルタ・T細胞の頻度と機能を,粒状炎症,特に麻痺の炎症において調査する.
- 麻痺病変からのガンマデルタT細胞が,菌根菌の抗原を認識するかどうかを判断する.
- ガンマデルタT細胞の免疫反応における潜在的役割,例えば花粉腫の形成を調査する.
主な方法:
- 正常な皮膚や麻痺性皮膚病変を含む様々な組織におけるガンマデルタT細胞の頻度の定量化.
- 麻痺の病変からのT細胞受容体 (TCR) ガンマデルタ+リンパ球線の生成とインビトロ培養.
- マイコバクテリアの抗原への反応としてリンパ球の増殖の評価と,単細胞結合に対する培養スーパーナタン効果の評価.
主要な成果:
- ガンマデルタT細胞の頻度が5〜8倍増加することが,正常組織と比較して,麻痺の粒状反応で観察されました.
- 麻痺病変からのTCRガンマデルタ+リンパ球系は,菌根性抗原に特異的な増殖を示し,自己分子の文脈でプレゼンテーションを必要とする.
- 活性化されたガンマ・デルタ・Tリンパ球は,単細胞の粘着と集約を誘導する因子を分泌し,潜在的に花粉腫形成に寄与します.
結論:
- ガンマ・デルタ・T細胞は,麻痺の小胞腫において有意に拡張し,菌根菌の抗原に対して特異的な反応性を示す.
- これらの発見は,菌根菌感染症に対する免疫応答において,ガンマデルタT細胞が重要な役割を果たすことを示唆しています.
- モノサイトに対する観察された効果は,ガンマデルタT細胞が,花粉腫形成をオーケストラ化する潜在的なメカニズムを示しています.
関連する概念動画
Cell-mediated 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,...
Cells of the Adaptive Immune Response
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...
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...

