関連する実験動画
Updated: Oct 11, 2025

10:29
Generation of Human Chimeric Antigen Receptor Regulatory T Cells
Published on: January 3, 2025
1.7K
CAR T細胞機能障害におけるNK型のCAR T細胞変異
Charly R Good1, M Angela Aznar2, Shunichiro Kuramitsu2
1Department of Cell and Developmental Biology, Penn Institute of Epigenetics, Perelman School of Medicine, Philadelphia, PA 19104, USA.
Cell
|December 3, 2021
まとめ
化学抗原受容体 (CAR) T細胞治療は,固体腫瘍に対して有望である. 研究者らは,SOX4とID3をターゲットにすることで,CAR T細胞の枯渇を防止し,治療効果を向上させることがわかった.
科学分野:
- 免疫療法
- 癌 生物学
- 細胞の可塑性
背景:
- 化学抗原受容体 (CAR) T細胞治療は,血液がんに対して非常に有効ですが,主に腫瘍の微小環境内のT細胞枯渇のために,固体腫瘍では課題に直面しています.
- CAR T細胞機能障害のメカニズムを理解することは,がん治療の戦略を前進させる上で極めて重要です.
研究 の 目的:
- 臓がんにおけるメソセリン誘導 CAR T細胞の機能障害を調査する.
- CAR T細胞枯渇の主要な調節因子を特定し,固体腫瘍における治療効果を高める戦略を探求する.
主な方法:
- T細胞の疲労を模倣する継続的な抗原被曝の頑丈な in vitro モデルの開発
- In vitroモデルと臓がん患者からのCAR T細胞の分析
- CAR T細胞機能障害に関連する遺伝子発現シグネチャーと転写因子の特定
主要な成果:
- 固体腫瘍におけるCAR T細胞の枯渇は,CD8+ T細胞からNK型T細胞への移行と関連しています.
- 特定の遺伝子シグネチャーと転写因子であるSOX4とID3は,CAR T細胞枯渇の重要な調節因子として特定されました.
- ID3 と SOX4 の遺伝的ダウンレギュレーションは,機能不全を緩和することによって,CAR T細胞の有効性を改善することが示されました.
結論:
- 人間のCAR T細胞は,継続的な抗原被曝下でNK型に変化する,顕著な可塑性を示す.
- SOX4とID3は,CAR T細胞枯渇の主要な原動力であり,潜在的な治療目標を表しています.
- SOX4とID3の発現を調節することで,固体腫瘍に対するCAR T細胞治療を強化する有望な戦略が提供されます.
関連する概念動画
T Cell Activation and Clonal Selection
8.5K
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...
8.5K
T Cell Types and Functions
1.5K
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...
1.5K
Cytotoxic T Cells-mediated Immune Response
4.3K
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...
4.3K
Cells of the Innate Immune Response
5.9K
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...
5.9K

