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相关概念视频

Tumor Immunotherapy01:27

Tumor Immunotherapy

526
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
526
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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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...
735
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

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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...
917
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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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...
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The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

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Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
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Cancer Vaccines01:30

Cancer Vaccines

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Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
367

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相关实验视频

Updated: Jul 5, 2025

Preparation of Tumor Antigen-loaded Mature Dendritic Cells for Immunotherapy
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抑制BCL2刺激树突细胞功能,从而改善抗癌免疫疗法.

Peng Liu1,2, Liwei Zhao1,2, Guido Kroemer3,4,5

  • 1Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.

Genes and immunity
|January 24, 2024
PubMed
概括

研究人员将BCL2确定为树突细胞 (DC) 免疫检查点. 抑制BCL2增强了抗癌免疫力,为癌症免疫疗法提供了一个新的双检查点阻塞策略.

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Experimental Melanoma Immunotherapy Model Using Tumor Vaccination with a Hematopoietic Cytokine
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Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes
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Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes

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相关实验视频

Last Updated: Jul 5, 2025

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Experimental Melanoma Immunotherapy Model Using Tumor Vaccination with a Hematopoietic Cytokine
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Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes
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科学领域:

  • 免疫学 免疫学 免疫学
  • 癌症生物学 癌症生物学
  • 遗传学 遗传学 是一个

背景情况:

  • 状细胞 (DCs) 对于启动抗癌免疫是至关重要的.
  • 识别特定于DC的免疫检查点可以增强免疫疗法.
  • CRISPR/Cas9查为功能基因组学提供了一个强大的工具.

研究的目的:

  • 为了识别新的DC特异性免疫检查点.
  • 评估针对癌症中这些检查点的治疗潜力.

主要方法:

  • 开发了一个基于CRISPR/Cas9的查平台,用于DC基因型-表型分析.
  • 进行全基因组查,以确定功能获取的表型.
  • 研究了BCL2在DC功能和抗癌免疫力中的作用.
  • 在小鼠模型中评估了单独的BCL2抑制和与PD-1阻断结合的疗效.

主要成果:

  • 确定了BCL2作为DC特有的免疫检查点.
  • 抑制BCL2增强了常规1型树突细胞 (cDC1) 的抗原呈现.
  • 向BCL2介导的T细胞依赖的抗癌免疫力.
  • 结合BCL2抑制 (venetoclax) 和PD-1阻断,在小鼠中协同增加了抗癌疗效.

结论:

  • BCL2代表了一个新的DC特异性免疫检查点.
  • 双重阻断BCL2和PD-1为增强癌症免疫治疗提供了一个有希望的策略.
  • 改善直流功能和预防T细胞枯竭可以结合起来,以获得更大的治疗益处.