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Common Polymorphisms in the Glycoproteins of Human Cytomegalovirus and Associated Strain-Specific Immunity
Hsuan-Yuan Wang1,2, Sarah M Valencia2, Susanne P Pfeifer3
1Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA.
Abstract:
Human cytomegalovirus (HCMV), one of the most prevalent viruses across the globe, is a common cause of morbidity and mortality for immunocompromised individuals. Recent clinical observations have demonstrated that mixed strain infections are common and may lead to more severe disease progression. This clinical observation illustrates the complexity of the HCMV genome and emphasizes the importance of taking a population-level view of genotypic evolution. Here we review frequently sampled polymorphisms in the glycoproteins of HCMV, comparing the variable regions, and summarizing their corresponding geographic distributions observed to date. The related strain-specific immunity, including neutralization activity and antigen-specific cellular immunity, is also discussed. Given that these glycoproteins are common targets for vaccine design and anti-viral therapies, this observed genetic variation represents an important resource for future efforts to combat HCMV infections.
Insights
Human cytomegalovirus (HCMV) genetic variations in glycoproteins are common and impact disease severity. Understanding these polymorphisms and their geographic distribution is crucial for developing effective vaccines and antiviral therapies against HCMV.
Area of Science:
- Virology
- Immunology
- Genetics
Background:
- Human cytomegalovirus (HCMV) is a widespread virus causing significant illness and death in immunocompromised individuals.
- Mixed strain HCMV infections are increasingly observed and linked to more severe disease outcomes.
- The complexity of the HCMV genome necessitates a population-level perspective on its genetic evolution.
Purpose of the Study:
- To review common polymorphisms in HCMV glycoproteins.
- To compare variable regions and summarize geographic distributions of HCMV genetic variants.
- To discuss strain-specific immunity, including neutralization and cellular immunity, in the context of HCMV glycoprotein variation.
Main Methods:
- Review of frequently sampled polymorphisms in HCMV glycoproteins.
- Comparative analysis of variable glycoprotein regions.
- Summarization of observed geographic distributions of HCMV strains.
- Discussion of immunological data related to strain-specific immunity.
Main Results:
- Identification of frequently sampled polymorphisms in HCMV glycoproteins.
- Characterization of variable regions within these glycoproteins.
- Compilation of geographic distribution data for different HCMV genetic variants.
- Discussion of the implications of genetic variation for strain-specific immunity.
Conclusions:
- Genetic variation in HCMV glycoproteins is significant and influences disease.
- Understanding geographic distribution of HCMV strains is vital for public health.
- The identified genetic variations provide a valuable resource for future HCMV vaccine and antiviral drug development.
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