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Use of In vivo Imaging to Monitor the Progression of Experimental Mouse Cytomegalovirus Infection in Neonates
Published on: July 6, 2013
Recent Advancements in Understanding Primary Cytomegalovirus Infection in a Mouse Model
Kimberley Bruce1, Jiawei Ma1, Clara Lawler1
1School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD 4072, Australia.
Abstract:
Animal models that mimic human infections provide insights in virus-host interplay; knowledge that in vitro approaches cannot readily predict, nor easily reproduce. Human cytomegalovirus (HCMV) infections are acquired asymptomatically, and primary infections are difficult to capture. The gap in our knowledge of the early events of HCMV colonization and spread limits rational design of HCMV antivirals and vaccines. Studies of natural infection with mouse cytomegalovirus (MCMV) have demonstrated the olfactory epithelium as the site of natural colonization. Systemic spread from the olfactory epithelium is facilitated by infected dendritic cells (DC); tracking dissemination uncovered previously unappreciated DC trafficking pathways. The olfactory epithelium also provides a unique niche that supports efficient MCMV superinfection and virus recombination. In this review, we summarize recent advances to our understanding of MCMV infection and spread and the tissue-specific mechanisms utilized by MCMV to modulate DC trafficking. As these mechanisms are likely conserved with HCMV, they may inform new approaches for preventing HCMV infections in humans.
Insights
Mouse cytomegalovirus (MCMV) studies reveal the olfactory epithelium as a key colonization site. Understanding MCMV
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Human cytomegalovirus (HCMV) primary infections are difficult to study, hindering antiviral and vaccine development.
- Animal models offer crucial insights into virus-host interactions that in vitro methods cannot fully replicate.
- Mouse cytomegalovirus (MCMV) serves as a valuable model for understanding cytomegalovirus pathogenesis.
Purpose of the Study:
- To review recent advances in understanding MCMV infection and spread.
- To highlight tissue-specific mechanisms MCMV uses to modulate dendritic cell (DC) trafficking.
- To explore how MCMV insights may inform strategies against HCMV in humans.
Main Methods:
- Review of existing literature on MCMV infection and spread.
- Analysis of studies investigating DC trafficking pathways during MCMV infection.
- Comparison of MCMV mechanisms with potential relevance to HCMV.
Main Results:
- The olfactory epithelium is identified as the natural colonization site for MCMV.
- Infected dendritic cells (DCs) facilitate systemic spread from the olfactory epithelium via novel trafficking pathways.
- The olfactory epithelium supports MCMV superinfection and virus recombination.
Conclusions:
- MCMV utilizes specific mechanisms within the olfactory epithelium to modulate DC trafficking.
- Understanding these MCMV-driven DC modulation pathways may lead to new strategies for preventing HCMV infections.
- Further research into MCMV-host interactions can inform human cytomegalovirus vaccine and antiviral design.
