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Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion
Published on: September 13, 2024
Human parvovirus B19: a mechanistic overview of infection and DNA replication
1Department of Microbiology, Molecular Genetics & Immunology, University of Kansas Medical Center, Mail Stop 3029, 3901 Rainbow Blvd, Kansas City, KS 66160, USA.
Abstract:
Human parvovirus B19 (B19V) is a human pathogen that belongs to genus Erythroparvovirus of the Parvoviridae family, which is composed of a group of small DNA viruses with a linear single-stranded DNA genome. B19V mainly infects human erythroid progenitor cells and causes mild to severe hematological disorders in patients. However, recent clinical studies indicate that B19V also infects nonerythroid lineage cells, such as myocardial endothelial cells, and may be associated with other disease outcomes. Several cell culture systems, including permissive and semipermissive erythroid lineage cells, nonpermissive human embryonic kidney 293 cells and recently reported myocardial endothelial cells, have been used to study the mechanisms underlying B19V infection and B19V DNA replication. This review aims to summarize recent advances in B19V studies with a focus on the mechanisms of B19V tropism specific to different cell types and the cellular pathways involved in B19V DNA replication including cellular signaling transduction and cell cycle arrest.
Insights
Human parvovirus B19 (B19V) infects erythroid cells, causing blood disorders. Recent research shows B19V also targets nonerythroid cells, like heart cells, impacting diverse health outcomes.
Area of Science:
- Virology
- Cell Biology
- Pathogen Research
Background:
- Human parvovirus B19 (B19V), a small DNA virus in the Parvoviridae family, primarily infects erythroid progenitor cells.
- B19V infection is linked to various hematological disorders.
Purpose of the Study:
- To review recent advancements in understanding B19V infection mechanisms.
- To focus on B19V cell tropism and DNA replication pathways.
Main Methods:
- Review of current literature on B19V cell culture systems.
- Analysis of studies on B19V tropism in erythroid and nonerythroid cells.
- Examination of cellular pathways involved in B19V DNA replication.
Main Results:
- B19V exhibits tropism for erythroid progenitor cells, but also infects nonerythroid cells like myocardial endothelial cells.
- Studies utilize various cell culture models, including permissive erythroid cells and nonpermissive HEK293 cells.
- Cellular signaling and cell cycle arrest are implicated in B19V DNA replication.
Conclusions:
- B19V tropism is more diverse than previously thought, extending to nonerythroid cell types.
- Understanding B19V's interaction with cellular pathways is crucial for elucidating its pathogenesis.
- Further research is needed to fully understand the implications of B19V infection in nonerythroid cells.
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