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Updated: Oct 14, 2025
Humanized Mouse Model to Study Bacterial Infections Targeting the Microvasculature
Published on: April 1, 2014
A Reliable Murine Model of Disseminated Infection Induced by Talaromyces Marneffei
Juan He1, Jia-Sheng Li2, Hong-Yan Xu1
1Department of Dermatology and Venereology, First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming, 650032, Yunnan, China.
Abstract:
Talaromycosis (penicilliosis) caused by Talaromyces marneffei is one of the most important opportunistic infection diseases in tropical countries of South and Southeast Asia. Most infections occurred in individuals with human immunodeficiency virus (HIV) and the primarily reason for the increase in the number of the cases is HIV pandemic. The pathogenesis of T. marneffei infection is unclear. There is still no ideal animal model for studying talaromycosis. In this study, we developed a stable, safe and maneuverable murine model that mimics human T. marneffei disseminated infection using T. marneffei yeast intraperitoneal injected to BALB/c nude mice. We successfully observed symptoms similar to those seen in clinical patients in this murine model, including skin lesions, hepatosplenomegaly, pulmonary infection and mesenteric lesions. We further studied the pathological changes of various tissues and organs in the infected animals to help better understand the severity of the infection. This model may provide a good tool for studying disseminated infection induced by T. marneffei.
Insights
Researchers developed a new mouse model to study Talaromyces marneffei infections, a major opportunistic disease in HIV patients. This model accurately mimics human talaromycosis symptoms, aiding further research into this infection.
Area of Science:
- Mycology
- Infectious Diseases
- Animal Models
Background:
- Talaromycosis (penicilliosis), caused by Talaromyces marneffei, is a significant opportunistic infection in Southeast Asia.
- Human immunodeficiency virus (HIV) pandemic is a primary driver for the increasing incidence of talaromycosis.
- The pathogenesis of Talaromyces marneffei infection remains poorly understood, and an ideal animal model is lacking.
Purpose of the Study:
- To develop a stable, safe, and maneuverable murine model for studying disseminated Talaromyces marneffei infection.
- To mimic clinical manifestations of talaromycosis observed in human patients.
- To facilitate a better understanding of the pathological changes associated with T. marneffei infection.
Main Methods:
- Intraperitoneal injection of Talaromyces marneffei yeast into BALB/c nude mice.
- Observation and documentation of clinical symptoms, including skin lesions, hepatosplenomegaly, pulmonary infection, and mesenteric lesions.
- Histopathological examination of various tissues and organs in infected mice.
Main Results:
- A stable and maneuverable murine model successfully mimicking disseminated Talaromyces marneffei infection was established.
- The model exhibited clinical symptoms consistent with human talaromycosis, such as skin lesions and organ enlargement.
- Pathological changes in multiple organs were observed, providing insights into infection severity.
Conclusions:
- The developed murine model effectively replicates human disseminated talaromycosis.
- This model serves as a valuable tool for investigating Talaromyces marneffei pathogenesis and evaluating potential therapeutic strategies.
- Further research using this model can enhance understanding and management of talaromycosis in endemic regions.
