title: Proteome profiling of virus-host interactions of wild type and attenuated measles virus strains.
abstract: Quantitative gel-based proteomics (2D DIGE coupled to MALDI-TOF/TOF MS) has been used to investigate the effects of different measles virus (MV) strains on the host cell proteome. A549/hSLAM cells were infected either with wild type MV strains, an attenuated vaccine or a multiple passaged Vero cell adapted strain. By including interferon beta treatment as a control it was possible to distinguish between the classical antiviral response and changes induced specifically by the different strains. Of 38 differentially expressed proteins in total (p-value ≤0.05, fold change ≥2), 18 proteins were uniquely modulated following MV infection with up to 9 proteins specific per individual strain. Interestingly, wt strains displayed distinct protein patterns particularly during the late phase of infection. Proteins were grouped into cytoskeleton, metabolism, transcription/translation, immune response and mitochondrial proteins. Bioinformatics analysis revealed mostly changes in proteins regulating cell death and apoptosis. Surprisingly, wt strains affected the cytokeratin system much stronger than the vaccine strain. To our knowledge, this is the first study on the MV-host proteome addressing interstrain differences.
  
  
  CONCLUSIONS
  In the present study we investigated the host cell proteome upon measles virus (MV) infection. The novelty about this study is the side-by side comparison of different strains from the same virus, which has not been done at the proteome level for any other virus including MV. We used different virus strains including a vaccine strain, wild type isolates derived from MV-infected patients as well as a Vero cell adapted strain, which serves as an intermediate between vaccine and wild type strain. We observed differences between vaccine and wild type strains as well as common features between different wild type strains. Perhaps one of the most surprising findings was that differences did not only occur between wild type and vaccine or Vero cell adapted strains but also between different wild type strains. In fact our study suggests that besides the cytokeratin and the IFN system wild type viruses seem to differ as much among each other than from vaccine strains. Thus our results are suggestive of complex and diverse virus-host interactions which differ considerably between different wild type strains. Our data indicate that interstrain differences are prominent and have so far been neglected by proteomics studies.
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Anja M
authors.initials: AM
authors.lastname: Billing
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Julia R
authors.initials: JR
authors.lastname: Kessler
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Dominique
authors.initials: D
authors.lastname: Revets
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Sausy
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Stephanie
authors.initials: S
authors.lastname: Schmitz
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg.
authors.forename: Claire
authors.initials: C
authors.lastname: Barra
authors.affiliation: Institute of Immunology, Centre de Recherche Public de la Santé/Laboratoire National de Santé, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg. Electronic address: claude.muller@crp-sante.lu.
authors.forename: Claude P
authors.initials: CP
authors.lastname: Muller
mesh_terms: D000818:Animals; D016466:CHO Cells; D002522:Chlorocebus aethiops; D006224:Cricetinae; D003412:Cricetulus; D003599:Cytoskeleton / Q000276:immunology / Q000378:metabolism; D054884:Host-Pathogen Interactions; D006801:Humans; D008457:Measles / Q000276:immunology / Q000378:metabolism*; D008459:Measles virus / Q000502:physiology*; D024101:Mitochondrial Proteins / Q000276:immunology / Q000378:metabolism; D014176:Protein Biosynthesis / Q000276:immunology; D020543:Proteome / Q000276:immunology / Q000378:metabolism*; D040901:Proteomics; D013045:Species Specificity; D014158:Transcription, Genetic / Q000276:immunology; D014709:Vero Cells; D014764:Viral Proteins / Q000276:immunology / Q000378:metabolism*
chemical_list: D024101:Mitochondrial Proteins; D020543:Proteome; D014764:Viral Proteins
keywords: Interferon beta; Interstrain differences; Measles virus; Proteomics; Virus–host interaction