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Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

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.
Cytotoxic T Cells-mediated Immune Response01:27

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...
T Cell Types and Functions01:24

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...
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
T Cell Activation and Clonal Selection01:22

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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview

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Related Experiment Video

Updated: Jun 29, 2026

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
09:04

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells

Published on: March 7, 2025

T cell-mediated help against tumors.

Thomas Wieder1, Heidi Braumüller, Manfred Kneilling

  • 1Department of Dermatology, Eberhard Karls University, Tübingen, Germany.

Cell Cycle (Georgetown, Tex.)
|October 8, 2008
PubMed
Summary

Adoptive transfer of T helper (Th) cells shows potent anti-tumor effects by inducing tumor dormancy, not cell destruction. This approach requires interferon gamma (IFNγ) signaling for efficacy against aggressive tumors.

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Area of Science:

  • Immunology
  • Oncology
  • Cell Biology

Background:

  • Adoptive transfer of tumor antigen-specific T helper (Th) cells is a potent anti-tumor therapy.
  • Th cells can significantly extend life in mice with aggressive beta cell tumors, outperforming other studied therapies.

Purpose of the Study:

  • To investigate the mechanisms of Th cell-mediated anti-tumor effects.
  • To explore the potential of Th cell-induced tumor dormancy as a therapeutic strategy.

Main Methods:

  • Utilized RIP1-Tag2 mouse model with endogenous beta cell tumors.
  • Assessed Th cell efficacy and dependence on interferon gamma (IFNγ) signaling.

Main Results:

  • Th cell therapy inhibits tumor angiogenesis and beta cell proliferation, leading to tumor dormancy.
  • Therapeutic effect is independent of direct tumor cell destruction.
  • IFNγ signaling is critical for Th cell efficacy; its absence can worsen tumor progression.

Conclusions:

  • Th cell-mediated induction of tumor dormancy is a novel therapeutic option for aggressive and resistant tumors.
  • This approach can potentially be combined with conventional cytotoxic therapies.
  • A functional cytokine network, particularly IFNγ signaling, is essential for Th cell anti-tumor activity.