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Related Experiment Video

Updated: Jul 20, 2025

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Published on: August 13, 2013

miR-15/16 clusters restrict effector Treg cell differentiation and function.

Jiayi Dong¹, William J Huth¹, Nimi Marcel¹

¹School of Biological Sciences, University of California, San Diego , La Jolla, CA, USA.

The Journal of Experimental Medicine

|July 30, 2023

Summary

This summary is machine-generated.

The miR-15/16 microRNA cluster limits effector regulatory T cell (eTreg) responses. Loss of this cluster enhances eTreg function, impacting immune challenges and neuroinflammation.

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Last Updated: Jul 20, 2025

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

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Published on: August 13, 2013

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

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Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells

Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells

Published on: April 16, 2012

Area of Science:

Immunology
Molecular Biology
Genetics

Background:

Effector regulatory T cells (eTregs) are crucial for immune homeostasis and suppressing conventional T cell responses.
The role of microRNAs (miRNAs) in regulatory T cells (Tregs) is known, but their specific regulation of eTregs is unclear.

Purpose of the Study:

To investigate the role of microRNAs in regulating effector regulatory T cell (eTreg) function.
To identify specific miRNA regulators of eTreg responses and their underlying mechanisms.

Main Methods:

Treg-specific ablation of miR-15/16 clusters in mice.
Assessment of eTreg frequencies and suppressor function.
Analysis of immune responses in models of neuroinflammation, infectious, and non-infectious challenges.
Mechanistic studies involving gene expression analysis (IRF4, neuritin).

Main Results:

Loss of miR-15/16 clusters in Tregs leads to increased eTreg numbers and enhanced suppressor capacity.
Mice lacking miR-15/16 in Tregs show reduced immune responses during neuroinflammation and other challenges.
miR-15/16 clusters repress IRF4, a key transcription factor for eTreg function.
Neuritin, an IRF4-dependent molecule, is also a direct target of miR-15/16 clusters.

Conclusions:

The miR-15/16 cluster is a critical regulator of effector regulatory T cell (eTreg) responses.
eTreg function is controlled at both transcriptional and posttranscriptional levels by miRNAs.
These findings reveal a novel miRNA-mediated regulatory pathway impacting immune responses.