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Updated: Jul 2, 2025

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis

Published on: May 10, 2024

A Mouse Model for Eosinophilic Esophagitis (EoE).

Anish Dsilva¹, Shmulik Avlas¹, Natalie Rhone¹

¹Department of Clinical Microbiology and Immunology, Tel Aviv University, Israel.

Current Protocols

|February 19, 2024

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A new mouse model for eosinophilic esophagitis (EoE) uses oxazolone sensitization and esophageal challenges. This model accurately replicates key human EoE features, aiding future research and therapeutic development for this allergic immune disease.

Area of Science:

Immunology
Gastroenterology
Allergy Research

Background:

Eosinophilic esophagitis (EoE) is a growing T helper type 2 (Th2)-associated allergic immune disease causing esophageal dysfunction.
Current research heavily relies on human biopsies or cell lines, highlighting the need for a robust animal model.
A reliable preclinical model is essential for understanding EoE pathogenesis and testing new treatments.

Purpose of the Study:

To develop and validate a reproducible mouse model of eosinophilic esophagitis (EoE).
To establish a preclinical platform for evaluating potential EoE therapeutics.

Main Methods:

Wild-type mice were sensitized via ear application of oxazolone (OXA).
Intraesophageal challenges with OXA were administered to induce experimental EoE.

Keywords:

IL-13 IL-4 atopic dermatitis (AD)eosinophilic esophagitis (EoE)eosinophils esophagus oxazolone (OXA)

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Last Updated: Jul 2, 2025

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Histopathological analyses included H&E staining, anti-MBP for eosinophils, and anti-Ki-67 for proliferation.

Main Results:

The OXA-induced model successfully replicated key histopathological features of human EoE.
Observed features include intraepithelial eosinophilia, thickened epithelium and lamina propria, basal cell hyperplasia, and fibrosis.
Support protocols detailed histological analysis, eosinophil assessment, and proliferation studies.

Conclusions:

A novel, reproducible mouse model for EoE has been established using oxazolone.
This model effectively mimics human EoE pathology, serving as a valuable tool for disease research.
The model provides a crucial preclinical platform for the development of novel EoE therapies.