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Related Experiment Video

Updated: May 9, 2026

Induction of Graft-versus-host Disease and In Vivo T Cell Monitoring Using an MHC-matched Murine Model

Induction of Graft-versus-host Disease and In Vivo T Cell Monitoring Using an MHC-matched Murine Model

Published on: August 29, 2012

A 2-hit model for chronic GVHD.

Robertson Parkman¹

¹Children's Hospital Los Angeles.

|August 3, 2013

Summary

This summary is machine-generated.

Acute graft-versus-host disease (GVHD) reduces critical thymic cells and self-antigen diversity. Treatment with fibroblast growth factor 7 (Fgf7) reversed these effects, offering a potential therapeutic strategy.

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Last Updated: May 9, 2026

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Induction and Scoring of Graft-Versus-Host Disease in a Xenogeneic Murine Model and Quantification of Human T Cells in Mouse Tissues using Digital PCR

Induction and Scoring of Graft-Versus-Host Disease in a Xenogeneic Murine Model and Quantification of Human T Cells in Mouse Tissues using Digital PCR

Published on: May 23, 2019

Area of Science:

Immunology
Transplantation Biology
Thymic Epithelial Cell Biology

Background:

Graft-versus-host disease (GVHD) is a major complication following allogeneic stem cell transplantation.
Medullary thymic epithelial cells (mTECs) expressing autoimmune regulator (Aire) are crucial for establishing central self-tolerance.
Aire-dependent tissue-restricted antigens (TRAs) presented by mTECs induce deletion of autoreactive T cells.

Purpose of the Study:

To investigate the impact of acute GVHD on Aire-positive mTECs and TRA diversity in mice.
To evaluate the therapeutic potential of fibroblast growth factor 7 (Fgf7) in mitigating GVHD-induced thymic abnormalities.

Main Methods:

Induction of acute GVHD in a mouse model.
Flow cytometry analysis of thymic populations, specifically Aire-expressing mTECs.
Assessment of TRA expression diversity in the thymus.

Main Results:

Acute GVHD led to a significant reduction in Aire-expressing mTECs.
GVHD also decreased the diversity of Aire-dependent TRAs in the thymus.
Peritransplant administration of Fgf7 reversed both the reduction in Aire+ mTECs and the loss of TRA diversity.

Conclusions:

Acute GVHD severely impairs thymic self-tolerance mechanisms by depleting Aire+ mTECs and reducing TRA diversity.
Fgf7 acts as an epithelial protectant, restoring thymic function and potentially ameliorating GVHD-related autoimmunity.
Fgf7 represents a promising therapeutic agent for preventing or treating GVHD-induced immune dysregulation.