関連する実験動画
Updated: Jun 9, 2026

15:33
Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation
Published on: August 13, 2013
ヒト免疫不全ウイルス1型に曝されたデンドリット細胞は,CD4+T細胞に強力なサイトパシー感染を伝達する
P U Cameron1, P S Freudenthal, J M Barker
1Laboratory for Cellular Physiology and Immunology, Rockefeller University, New York, NY 10021.
まとめ
デンドリット細胞はヒト免疫不全ウイルス1型 (HIV-1) をT細胞に輸送し,T細胞死亡を引き起こし,ウイルスの影響を増幅します. このメカニズムは,獲得免疫不全症候群 (AIDS) のCD4+T細胞喪失を説明する.
科学分野:
- 免疫学 免疫学とは
- ウイルス学 ウイルス学 ウイルス学
- 細胞生物学 細胞生物学
背景:
- 減少した数と機能にもかかわらず,CD4+T細胞はわずかしかヒト免疫不全ウイルス1型 (HIV-1) を携わっていない.
- 低ウイルス感染のCD4+T細胞と,HIV-1感染でこれらの細胞が著しく枯渇するとの間には,不一致がある.
研究 の 目的:
- 樹状細胞 (DCs) がHIV-1感染におけるCD4+T細胞減少に寄与するメカニズムを解明する.
- HIV-1のサイトパシー効果を拡大するDCの役割を調査する.
主な方法:
- この研究では,デンドリット細胞とT細胞を含む経路について説明しています.
- HIV-1 に曝露した後のT細胞のクラスタリング,シンチア形成,ウイルス放出の分析.
主要な成果:
- デンドリット細胞は,HIV-1に曝露した後に,抗原を呈し,T細胞とクラスターを形成し,T細胞の複製を推進する.
- dendritic 細胞は検出可能な感染を示さないが,クラスタ化された T 細胞は syncytia を形成し, virions を放出し,溶解を受けます.
- このDC媒介のHIV-1の伝達は,細胞病原性効果を拡大し,T細胞死亡につながります.
結論:
- HIV-1のデンドリット細胞伝達は,抗原特異性CD4+T細胞の溶解と喪失に貢献する重要なメカニズムです.
- この経路は,少量のウイルスであっても細胞病的影響を増幅し,獲得免疫不全症候群 (AIDS) のCD4+T細胞枯渇を説明します.
関連する概念動画
Cell-mediated Immune Responses
Overview
T Cell Activation and Clonal Selection
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
T Cell Types and Functions
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
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...
Cytomegalovirus Disease
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...

