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Related Concept Videos

Human Virome01:26

Human Virome

The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible only with...
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Bacteriophages of the Human Virome

Bacteriophages are found throughout the human body. They may even outnumber eukaryotic viruses, forming an important and dynamic component of the human virome. Indeed, phages represent the most abundant viral entities, with densities in the gut reaching up to 10⁹ particles per gram of fecal matter, and many belonging to orders such as Caudovirales and Microviridae, while a substantial proportion remains unclassified as viral “dark matter.”Lysogeny and Genetic ExchangeIn the gut, bacteriophages...
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Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a virus that...
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Quantifying Human Norovirus Virus-like Particles Binding to Commensal Bacteria Using Flow Cytometry
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Interaction between single wall carbon nanotubes and a human enteric virus.

Anna Rita Petrinca1, Domenica Donia, Rosadele Cicchetti

  • 1Dept. Public Health, Hygiene chair, Faculty of Medicine, University of Tor Vergata, Via Montpellier, Rome, Italy.

Journal of Virological Methods
|April 13, 2010
PubMed
Summary

Activated single-wall carbon nanotubes (SWNTs) effectively complex with the hepatitis A virus. Polyethylenimine-coated SWNTs show enhanced adsorption, suggesting potential for virus transfection in cell lines.

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Published on: February 19, 2016

Area of Science:

  • Nanotechnology
  • Virology
  • Biomedical Engineering

Background:

  • Single-wall carbon nanotubes (SWNTs) are utilized in biomedical applications as carriers for various molecules.
  • Previous research indicates SWNTs' suitability for drug, peptide, protein, and nucleic acid delivery.

Purpose of the Study:

  • To evaluate the complex formation between two types of activated SWNTs and the hepatitis A virus.
  • To assess the impact of polyethylenimine (PEI) coating on SWNTs' viral adsorption capacity.

Main Methods:

  • Activation of SWNTs with carboxyl groups or carboxyl groups and PEI.
  • Complexation assays with hepatitis A virus.
  • Analysis of adsorptive capacity and optimization of SWNTs-PEI ratios and viral inoculum.
  • Statistical analysis using the chi(2)-test.

Main Results:

  • Both carboxyl-activated and PEI-coated SWNTs formed complexes with the hepatitis A virus, albeit with different patterns.
  • PEI-coated SWNTs exhibited improved adsorption compared to carboxyl-activated SWNTs.
  • Optimal adsorption occurred with a SWNTs-PEI weight ratio of 1:0.2 for a specific viral inoculum, and adsorption was time and contact-dependent.

Conclusions:

  • SWNTs coated with PEI demonstrate an ability to complex with viruses.
  • These PEI-coated SWNTs hold potential for future applications in transfecting non-permissive cell lines with viruses.