| Virus Name | Measles Virus |
| Virus Short Name | MeV |
| Order | Mononegavirales |
| Virus Family | Paramyxoviridae |
| Virus Subfamily | N.A. |
| Genus | Morbilivirus |
| Species | Measles morbillivirus |
| Host | Vertebrates |
| Cell Tropism | N.A. |
| Associated Disease | Fever, rash |
| Mode of Transmission | Sexual contact, blood, breast feeding |
| VIPR DB link | http://www.viprbrc.org/brc/vipr_allSpecies_search.do?method=SubmitForm&decorator=paramyxo |
| ICTV DB link | https://talk.ictvonline.org/ictv-reports/ictv_9th_report/negative-sense-rna-viruses-2011/w/negrna_viruses/199/paramyxoviridae |
| Virus Host DB link | http://www.genome.jp/virushostdb/view/?virus_lineage=Paramyxoviridae |
| Paper Title | The measles virus V protein binds to p65 (RelA) to suppress NF-κB activity |
| Author's Name | Kerstin M. Schuhmann, Christian K. Pfaller, and Karl-Klaus Conzelmann |
| Journal Name | Journal Of Virology |
| Pubmed ID | 21270162 |
| Abstract | Nuclear factor κB (NF-κB) transcription factors are involved in controlling numerous cellular processes, including inflammation, innate and adaptive immunity, and cell survival. Here we show that the immunosuppressive measles virus (MV; Morbillivirus genus, Paramyxoviridae) has evolved multiple functions to interfere with canonical NF-κB signaling in epithelial cells. The MV P, V, and C proteins, also involved in preventing host cell interferon responses, were found to individually suppress NF-κB-dependent reporter gene expression in response to activation of the tumor necrosis factor (TNF) receptor, RIG-I-like receptors, or Toll-like receptors. NF-κB activity was most efficiently suppressed in the presence of V, while expression of P or C resulted in moderate inhibition. As indicated by reporter gene assays involving overexpression of the IκB kinase (IKK) complex, which phosphorylates the inhibitor of κB to liberate NF-κB, V protein targets a downstream step in the signaling cascade. Coimmunoprecipitation experiments revealed that V specifically binds to the Rel homology domain of the NF-κB subunit p65 but not of p50. Notably, the short C-terminal domain of the V protein, which is also involved in binding STAT2, IRF7, and MDA5, was sufficient for the interaction and for preventing reporter gene activity. As observed by confocal microscopy, the presence of V abolished nuclear translocation of p65 upon TNF-alpha stimulation. Thus, MV V appears to prevent NF-κB-dependent gene expression by retaining p65 in the cytoplasm. These findings reveal NF-κB as a key target of MV and stress the importance of the V protein as the major viral immune-modulatory factor. |
| Used Model | HEK-293T and HEp2 cells |
| DOI | 10.1128/JVI.02342-10 |
