The Human Metapneumovirus Matrix Protein Stimulates the Inflammatory Immune Response In Vitro
Author Information
Author(s): Audrey Bagnaud-Baule, Olivier Reynard, Magali Perret, Jean-Luc Berland, Mimoun Maache, Christophe Peyrefitte, Guy Vernet, Viktor Volchkov, Gláucia Paranhos-Baccalà
Primary Institution: bioMérieux, Emerging Pathogens Department, Institut Fédératif de Recherche 128 BioSciences Lyon Gerland, Lyon, France
Hypothesis
The inflammatory modulation observed in hMPV infected patients may be partly associated with the matrix protein (M-hMPV) response.
Conclusion
M-hMPV can be released in a soluble form and interacts with human immune cells, inducing an inflammatory response.
Supporting Evidence
- M-hMPV was detected in the supernatant of hMPV infected cells.
- M-hMPV protein induced the up-regulation of co-stimulatory molecules on dendritic cells.
- M-hMPV activated dendritic cells produced inflammatory cytokines.
- M-hMPV stimulated T cells in a mixed lymphocyte reaction.
Takeaway
The M-hMPV protein from a virus can help our immune cells get ready to fight infections by making them more active.
Methodology
The study involved the use of recombinant M-hMPV protein to assess its effects on human macrophages and dendritic cells in vitro.
Limitations
Further experiments are needed to characterize the release process of M-hMPV from infected cells.
Participant Demographics
Human peripheral blood from healthy donors was used to generate immune cells.
Digital Object Identifier (DOI)
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