Related Experiment Video
Updated: Mar 16, 2026

Measurement of BK-polyomavirus Non-Coding Control Region Driven Transcriptional Activity Via Flow Cytometry
Published on: July 13, 2019
Polyomavirus Persistence
Michael J Imperiale1, Mengxi Jiang2
1Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan 48109;
Abstract:
Mammalian polyomaviruses are characterized by establishing persistent infections in healthy hosts and generally causing clinical disease only in hosts whose immune systems are compromised. Despite the fact that these viruses were discovered decades ago, our knowledge of the mechanisms that govern viral persistence and reactivation is limited. Whereas mouse polyomavirus has been studied in a fair amount of detail, our understanding of the human viruses in particular is mostly inferred from experiments aimed at addressing other questions. In this review, we summarize the state of our current knowledge, draw conclusions when possible, and suggest areas that are in need of further study.
Insights
Mammalian polyomaviruses cause persistent infections, but their reactivation mechanisms remain unclear. This review summarizes current knowledge on these viruses, highlighting gaps in understanding human polyomavirus persistence.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Mammalian polyomaviruses establish persistent infections in healthy individuals.
- Disease manifestation typically occurs in immunocompromised hosts.
- Decades after discovery, mechanisms of viral persistence and reactivation are poorly understood.
Purpose of the Study:
- To review the current state of knowledge on mammalian polyomaviruses.
- To identify gaps in understanding viral persistence and reactivation.
- To suggest future research directions for human polyomaviruses.
Main Methods:
- Literature review of existing studies on mammalian polyomaviruses.
- Analysis of data from mouse polyomavirus research.
- Inference of human polyomavirus behavior from related studies.
Main Results:
- Limited understanding of the specific mechanisms governing polyomavirus persistence and reactivation.
- Mouse polyomavirus is relatively well-studied compared to human counterparts.
- Knowledge on human polyomaviruses is largely extrapolated.
Conclusions:
- Significant knowledge gaps exist regarding mammalian polyomavirus persistence and reactivation.
- Further targeted research is needed, particularly for human polyomaviruses.
- Understanding these viruses is crucial for managing opportunistic infections.
Related Concept Videos
Mechanisms of Retrovirus-induced Cancers
Mechanisms of Retrovirus-induced Cancers
Retrovirus Life Cycles
Size and Structure of Viral Genomes
Viruses with RNA Genomes
Retroviruses

