リンパ球は,再結合免疫インターフェロンによって誘発されたヒト血管内皮および皮膚線維芽細胞Ia抗原を認識します
Nature
|October 20, 1983
まとめ
インターフェロン-ガンマ (IFN-ガンマ) は,ヒト内皮細胞と線維芽細胞を誘導して,主要基因互換性複合体II (Ia) クラス抗原を発現させます. この発現はT細胞による機能的認識を可能にし,アロ移植の拒絶に潜在的に影響を及ぼします.
科学分野:
- 免疫学 免疫学とは
- 移植生物学 移植生物学について
- 細胞および分子医学は,細胞および分子医学である.
背景:
- 血管の成分に対するTリンパ球の反応は,アロ移植の拒絶に不可欠です.
- 細胞分解性Tリンパ球 (CTL) 誘導は,外来クラスII (Ia) 抗原の認識に依存し,殺しはしばしばクラスI抗原を含む.
- Ia抗原の発現は免疫細胞に限られていると考えられ,移植における乗客白血球は拒絶の鍵となる.
研究 の 目的:
- 非血液形成細胞におけるIa抗原発現の誘導を調査する.
- 免疫インターフェロン (IFN-ガンマ) が,様々なヒトメゼンキマ細胞のIa発現を誘導できるかどうかを判断する.
- T細胞の相互作用における誘導されたIa発現の機能的関連性を評価する.
主な方法:
- ヒト静脈内皮細胞 (HUVE),人前皮毛細血管内皮細胞 (HFCE),SV-HUVE細胞,ヒト皮膚線維芽細胞 (HDF) をリコンビナントIFN-ガンマで治療する.
- 免疫光顕微鏡でIa抗原発現を検出する.
- Ia を持つ細胞のT細胞認識を評価するための機能検査.
主要な成果:
- IFN-ガンマは,以前に報告されたHUVE細胞に加えて,HFCE細胞,SV-HUVE細胞,およびHDF細胞のIa発現を誘導しました.
- HUVE細胞とHDF細胞に発現するIa抗原は,ヒトT細胞によって機能的に認識されました.
- 証拠は,Ia抗原認識によるT細胞とメゼンキマ細胞の双方向の相互作用を示唆しています.
結論:
- 免疫インターフェロン (IFN-ガンマ) は,ヒト内皮細胞および線維芽細胞における主要な組織適合性複合体II (Ia) クラスII (Ia) 抗原発現の強力な誘導体である.
- T細胞によるこれらの誘導されたIa抗原の機能的認識は,アロ移植の拒絶に重要な役割を果たすことを示唆しています.
- この相互作用は,移植の文脈でT細胞と非血液形成細胞との結合の潜在的な経路を強調しています.
関連する概念動画
Cell-mediated Immune Responses
Overview
Cells of the Innate Immune Response
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
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,...
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
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...
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...


