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A standardized protocol for assessing immunodeficiency in mouse models.

Andrea Cappelleri^1,2, Simone Canesi^1,2, Valentina Capo^3,4

¹Department of Veterinary Medicine and Animal Sciences, University of Milan, Lodi, Italy.

Veterinary Pathology

|August 28, 2025

Summary

This summary is machine-generated.

A new standardized protocol effectively assesses immunodeficient mouse models by evaluating organ weights, cellularity, and immune cell populations. This method aids in characterizing the type and severity of immune defects in various mouse strains.

Keywords:

flow cytometry hematology immune cells immunodeficiency immunohistochemistry mouse standardized protocol

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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice

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Published on: February 22, 2019

Area of Science:

Immunology
Genetics
Animal Models

Background:

Immunodeficient mouse strains are crucial for biomedical research.
A lack of standardized evaluation methods hinders unbiased comparisons.
Assessing immunodeficiency requires a comprehensive, multi-disciplinary approach.

Purpose of the Study:

To develop and validate a standardized protocol for morpho-phenotypical assessment of immunodeficient mouse models.
To compare four distinct immunodeficient mouse strains (Cd40l-/- , Was-/- , Rag1R972Q/R972Q , and Rag1-/-) against wild-type controls.
To characterize the type and severity of immune defects in these models.

Main Methods:

Harvesting, weighing, and histological analysis of lymphoid organs.
Immunohistochemistry and flow cytometry for immune cell population analysis.
Hematology and bone marrow cytology to assess immune cell counts and types.

Main Results:

Reduced relative organ weights and cellularity observed in Rag1R972Q/R972Q and Rag1-/- mice.
Histology confirmed lower cellularity, especially in Rag1-/- mice.
Flow cytometry and hematology revealed varying degrees of lymphopenia in Rag1 mutant strains.

Conclusions:

The developed protocol is effective for assessing immunodeficient mouse models.
The protocol accurately characterizes the type and severity of immune defects.
Integrated laboratory techniques provide complementary insights for robust immunodeficiency assessment.