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Novel Human Polyomaviruses Discovered From 2007 to the Present: An Update of Current Knowledge
Mohammad Mehdi Fazeli1, Sara Heydari Sirat1, Somayeh Shatizadeh Malekshahi1
1Department of Virology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Abstract:
Human polyomaviruses (HPyVs) are a diverse group of viruses that typically establish asymptomatic persistent infections in healthy individuals. However, they can lead to severe diseases in immunocompromised patients. The past 15 years have witnessed significant advancements in understanding HPyVs, leading to the discovery of several novel and highly divergent strains. This surge in knowledge raises critical questions about their evolution, tropism, and potential contributions to various diseases. Although HPyVs are generally benign, certain strains can lead to significant health issues under immunocompromised conditions. Since 2007, several novel PyVs have been isolated from humans: Karolinska Institute Polyomavirus (KIPyV), Washington University Polyomavirus (WUPyV), Merkel cell Polyomavirus (MCPyV), HPyV6, HPyV7, Trichodisplasia spinulosa polyomavirus (TSPyV), HPyV9, HPyV10, Saint Louis polyomavirus (STLPyV), HPyV12, New Jersey Polyomavirus (NJPyV), Lyon IARC polyomavirus (LIPyV), HPyV16 and Quebec polyomavirus (QPyV). This review summarises the available data regarding the biology, tissue tropism, epidemiology, and associated diseases of novel HPyVs discovered from 2007 to the present. While some HPyVs are well-characterised with clear associations to specific diseases, others remain enigmatic, warranting additional investigation into their biology and clinical implications.
Insights
Recent discoveries reveal novel human polyomaviruses (HPyVs) with diverse characteristics. While typically harmless, some HPyVs cause severe disease in immunocompromised individuals, necessitating further research.
Area of Science:
- Virology
- Infectious Diseases
- Molecular Biology
Background:
- Human polyomaviruses (HPyVs) are common, often causing asymptomatic infections.
- Immunocompromised individuals are susceptible to severe HPyV-associated diseases.
- Significant advancements in HPyV research have occurred since 2007.
Purpose of the Study:
- To review the biology, tropism, epidemiology, and diseases associated with novel HPyVs discovered from 2007 onwards.
- To highlight the knowledge gaps regarding newly identified HPyV strains.
- To emphasize the clinical relevance of HPyV research.
Main Methods:
- Literature review of studies published from 2007 to the present.
- Compilation of data on HPyV biology, tissue tropism, and epidemiology.
- Analysis of disease associations for newly discovered HPyVs.
Main Results:
- Over a dozen novel HPyVs have been identified since 2007.
- These novel HPyVs exhibit diverse biological and epidemiological profiles.
- Some HPyVs have established disease links, while others remain poorly understood.
Conclusions:
- The discovery of novel HPyVs has expanded our understanding of viral diversity and evolution.
- Further research is crucial to elucidate the clinical significance and pathogenic potential of enigmatic HPyVs.
- Continued investigation is essential for managing HPyV infections, particularly in vulnerable populations.
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