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Related Concept Videos

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...
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...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
Special Features of Adaptive Immunity01:20

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,...

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Related Experiment Video

Updated: Jul 8, 2026

Mouse Na&#239;ve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
07:12

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

Origin of CD8+ effector and memory T cell subsets.

Christian Stemberger1, Michael Neuenhahn, Veit R Buchholz

  • 1Institute for Medical Microbiology, Immunology and Hygiene, Technical University Munich, Munich, Germany.

Cellular & Molecular Immunology
|January 1, 2008
PubMed
Summary

CD8+ T cell differentiation into distinct subsets is crucial for long-term immunity. Recent studies reveal precursor cells retain plasticity beyond initial divisions, impacting vaccine strategies.

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Published on: April 16, 2015

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Generation of Induced Regulatory T Cells from Primary Human Na&iuml;ve and Memory T Cells
14:23

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Published on: April 16, 2012

Area of Science:

  • Immunology
  • Cellular Biology
  • Vaccinology

Background:

  • CD8+ T cells are vital for immunity against intracellular pathogens and tumors, establishing long-term immunological memory.
  • Generating distinct effector and memory T cell subsets is necessary for these functions, but differentiation mechanisms remain unclear.
  • Understanding when T cell lineage fate decisions occur during clonal expansion is critical.

Purpose of the Study:

  • To investigate the mechanisms and timing of CD8+ T cell subset differentiation.
  • To determine at what stage of clonal expansion functional and phenotypical heterogeneity arises.
  • To explore the plasticity of T cell precursor differentiation.

Main Methods:

  • Utilized single-cell adoptive transfer technology.
  • Analyzed T cell differentiation patterns during clonal expansion.

Main Results:

  • Demonstrated that individual precursor CD8+ T cells retain broad plasticity.
  • Showed that differentiation programs can be shaped by factors acting beyond the first cell division.
  • Identified heterogeneity in T cell subsets arising later in clonal expansion.

Conclusions:

  • T cell subset differentiation is more plastic than previously thought, with key shaping events occurring after initial cell divisions.
  • These findings have significant implications for designing vaccines that enhance immune response quality and efficacy by modulating T cell differentiation.