Related Experiment Video

Updated: Jun 3, 2026

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
09:01

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection

Published on: December 10, 2013

In vitro sensitivity of human metapneumovirus to type I interferons

Carolina Scagnolari1, Simona Trombetti, Carla Selvaggi

  • 1Department of Molecular Medicine, Laboratory of Virology, Sapienza University of Rome, Rome, Italy.

Viral Immunology
|April 1, 2011
PubMed

Insights

Human metapneumovirus (hMPV) shows partial resistance to type I interferons (IFN). This suggests a need for further research into how hMPV

Area of Science:

  • Virology
  • Immunology
  • Molecular Biology

Background:

  • Human metapneumovirus (hMPV) is a significant respiratory pathogen.
  • Limited data exists on the interaction between hMPV and type I interferons (IFN).

Purpose of the Study:

  • To investigate the in vitro sensitivity of hMPV to type I interferons (IFN-β, IFN-α subtypes).
  • To compare the antiviral activity of IFNs against hMPV and a known IFN-sensitive virus.

Main Methods:

  • Utilized a human Hep-2 cell line for in vitro experiments.
  • Determined 50% inhibitory concentration (IC50) values for various type I IFN preparations against hMPV.
  • Compared IC50 values with those obtained for vesicular stomatitis virus (VSV).

Main Results:

  • hMPV exhibited significantly higher IC50 values compared to VSV, indicating partial resistance to type I IFNs.
  • Varied potency among IFN-α subtypes was observed, with subtypes 5, 6, 8, and 10 being most effective, and 2, 17, and 21 least effective.
  • Overall, hMPV demonstrated partial resistance to the antiviral effects of type I IFNs in Hep-2 cells.

Conclusions:

  • hMPV displays partial resistance to the antiviral activity of type I interferons in vitro.
  • Further investigation is needed to determine the clinical implications of hMPV's reduced IFN sensitivity.
  • Understanding this relationship may offer insights into hMPV pathogenesis and treatment strategies.

More Related Videos

Development and Validation of an Ultrasensitive Single Molecule Array Digital Enzyme-linked Immunosorbent Assay for Human Interferon-α08:26

Development and Validation of an Ultrasensitive Single Molecule Array Digital Enzyme-linked Immunosorbent Assay for Human Interferon-α

Published on: June 14, 2018

Rescue of Recombinant Newcastle Disease Virus from cDNA10:55

Rescue of Recombinant Newcastle Disease Virus from cDNA

Published on: October 11, 2013

Related Concept Videos

Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...