Related Experiment Video

Updated: Jun 29, 2026

Measurement of BK-polyomavirus Non-Coding Control Region Driven Transcriptional Activity Via Flow Cytometry
11:54

Measurement of BK-polyomavirus Non-Coding Control Region Driven Transcriptional Activity Via Flow Cytometry

Published on: July 13, 2019

[Polyomavirus newly discovered]

H Laude1, P Lebon

  • 1Service de virologie, hôpital Cochin-Saint-Vincent-de-Paul, 82, avenue Denfert-Rochereau, 75014 Paris, France.

Pathologie-Biologie
|October 10, 2008
PubMed

Insights

Three novel polyoma viruses were identified, with two linked to mild respiratory infections. A third polyoma virus found in Merkel cell tumors may play a role in cancerogenesis.

Area of Science:

  • Virology
  • Oncology
  • Infectious Diseases

Context:

  • Recent identification of three novel polyoma viruses.
  • Two viruses (KI and WU) detected in respiratory infections.
  • One virus identified in Merkel cell tumors.

Purpose:

  • To report the discovery and initial characterization of new polyoma viruses.
  • To investigate the potential role of these viruses in human diseases, including cancer.

Summary:

  • KI and WU polyoma viruses are associated with acute respiratory infections but show low incidence and mild clinical signs.
  • The physiopathology and cultivation of these respiratory viruses are currently unknown.
  • A third polyoma virus discovered in Merkel cell tumors shows higher incidence in tumor tissue, suggesting a potential role in cancerogenesis, though its transmission and oncogenic mechanisms require further study.
  • The ability of this third virus to integrate into host DNA highlights its potential involvement in various human cancers.

Impact:

  • Expands the known diversity of human polyoma viruses.
  • Highlights potential novel viral causes for respiratory illnesses.
  • Suggests a possible link between a new polyoma virus and Merkel cell carcinoma, warranting further etiological and mechanistic research.
  • Raises questions about the oncogenic potential of polyoma viruses that integrate into the host genome.

More Related Videos

Merkel Cell Polyomavirus Infection and Detection13:45

Merkel Cell Polyomavirus Infection and Detection

Published on: February 7, 2019

Single Cell Micro-aspiration as an Alternative Strategy to Fluorescence-activated Cell Sorting for Giant Virus Mixture Separation09:50

Single Cell Micro-aspiration as an Alternative Strategy to Fluorescence-activated Cell Sorting for Giant Virus Mixture Separation

Published on: October 27, 2019

Related Concept Videos

Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Viruses with RNA Genomes01:29

Viruses with RNA Genomes

RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
Viral Mutations00:36

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.