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Related Concept Videos

T Cell Types and Functions01:24

T Cell Types and Functions

756
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...
756

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Related Experiment Video

Updated: May 23, 2025

Induction of Experimental Autoimmune Encephalomyelitis in Mice and Evaluation of the Disease-dependent Distribution of Immune Cells in Various Tissues
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Endogenous ERMAP Affects T-Cell Function in EAE Mice.

Keke He1,2, Kezhu Chen2, Rong Hu3

  • 1Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, Guizhou, China.

Immunology
|March 11, 2025
PubMed
Summary
This summary is machine-generated.

Endogenous erythrocyte membrane-associated protein (ERMAP) normally suppresses T-cell activation and inflammation. ERMAP deficiency in mice exacerbates experimental autoimmune encephalomyelitis (EAE), highlighting its protective role in autoimmune disease.

Keywords:
ERMAPT cellsTregsexperimental autoimmune encephalomyelitismacrophages

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Area of Science:

  • Immunology
  • Neuroimmunology
  • Autoimmune Diseases

Background:

  • Multiple sclerosis (MS) is a CNS autoimmune disease driven by T cells.
  • Experimental autoimmune encephalomyelitis (EAE) models MS.
  • Erythrocyte membrane-associated protein (ERMAP) is a novel immune checkpoint molecule, but its endogenous function is unclear.

Purpose of the Study:

  • To investigate the role of endogenous ERMAP in T-cell and macrophage function.
  • To determine ERMAP's impact on EAE development and pathology.

Main Methods:

  • Generated ERMAP gene knockout (ERMAP-/-) mice.
  • Induced EAE in ERMAP-/- and wild-type (ERMAP+/+) mice.
  • Analyzed immune cell populations, T-cell activation, cytokine profiles, and gene expression (RNA-seq).

Main Results:

  • ERMAP-/- mice exhibited increased T cells, M1 macrophages, and T-cell activation.
  • ERMAP-/- mice showed more severe EAE with heightened inflammation (Th1/Th17, M1) and reduced regulation (Th2, Tregs, M2).
  • PPAR signaling pathway molecules were decreased in ERMAP-/- mice.

Conclusions:

  • Endogenous ERMAP is crucial for maintaining T-cell and macrophage homeostasis.
  • ERMAP deficiency exacerbates EAE by promoting pro-inflammatory immune responses.
  • ERMAP influences immune homeostasis potentially via the PPAR pathway.