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Related Concept Videos

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...
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...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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...
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...
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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview

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Related Experiment Video

Updated: Jul 7, 2026

Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity
06:16

Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity

Published on: December 7, 2019

IgE Production Beyond Classical T-Cell Help.

Boryeong Jo1, Jaechul Lim1,2

  • 1College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea.

Immune Network
|July 6, 2026
PubMed
Summary
This summary is machine-generated.

Immunoglobulin E (IgE) is key in allergies, but new research reveals alternative pathways for its production beyond T-cell help. Innate immune cells also drive IgE generation, impacting immunity and inflammation.

Keywords:
AllergyB-lymphocytesIL-4Immunoglobulin ET-lymphocytes

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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor
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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor

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

Published on: April 16, 2015

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Last Updated: Jul 7, 2026

Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity
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Generation of Orthotopic Pancreatic Tumors and Ex vivo Characterization of Tumor-Infiltrating T Cell Cytotoxicity

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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor
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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor

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Mouse Naïve 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

Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • Immunoglobulin E (IgE) is central to allergic diseases, mediating mast cell and basophil activation.
  • Conventional IgE production relies on T-helper cells (Th2, Tfh) driving B cell class switching.

Purpose of the Study:

  • To provide a comprehensive overview of IgE production pathways.
  • To examine IgE biogenesis in physiological and pathological contexts.
  • To explore IgE's role beyond allergy in immunity and inflammation.

Main Methods:

  • Literature review of IgE production mechanisms.
  • Analysis of T-cell-dependent and independent IgE pathways.
  • Examination of innate immune cell involvement in IgE synthesis.

Main Results:

  • Identified alternative IgE production routes involving innate immune cells like basophils and group 2 innate lymphoid cells.
  • Demonstrated IL-4 production by innate cells can drive IgE synthesis.
  • Highlighted IgE's broader roles in barrier defense and protective immunity.

Conclusions:

  • IgE biogenesis is more diverse than previously understood, involving both adaptive and innate immune mechanisms.
  • Understanding these diverse pathways is crucial for comprehending IgE's multifaceted roles in health and disease.
  • This mechanistic diversity impacts barrier defense, immunity, and inflammatory disorders.