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D Ranasinghe Atapattu Mudiyanselage, Nelman Pushpa, 2018. Comparison of the immunomodulatory capabilities of the V and C proteins of different morbilliviruses. Second cycle, A2E. Uppsala: SLU, Dept. of Biomedical Sciences and Veterinary Public Health

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Abstract

During a viral infection, when the virus enters into the cytoplasm, different cell types are able to produce interferons (IFN) as a result of interaction between intracellular pattern recognition receptors (PRR) and RNA helicases. This interferon activates and establishes an antiviral state which limits further spread of the virus. Morbilliviruses are highly infectious viruses that spread mainly via direct contact. The genome of morbillivirus contains six genes, translated into eight proteins. The morbillivirus P gene is translated, in addition to the P protein, to V and C proteins. These proteins are directly related to inhibiting type I interferon expression and signalling and thus limit transcription of interferon-
stimulated genes (ISGs). Previous studies show that V and C
proteins of morbilliviruses have an ability to interfere with the type I IFN pathway at different levels, and the V protein is the main inhibitor. This study focuses on the immunomodulatory capability of a newly discovered Feline morbillivirus (FmoPV) in comparison with the wellknown
Canine distemper morbillivirus (CDV) of dogs and Measles
morbillivirus (MeV) of humans. The V proteins of all the tested viruses strongly inhibited the type I IFN pathway compared to the C proteins. The V and C proteins of FmoPV showed lower immunomodulatory capabilities compared to CDV and MeV. The V protein of CDV showed highest inhibitory ability of tested V proteins and the C protein of the MeV showed the highest inhibitory ability of the tested C proteins. In both cases, significant inhibitory similarities between V and C protein of CDV and MeV were observed.

Main title:Comparison of the immunomodulatory capabilities of the V and C proteins of different morbilliviruses
Authors:D Ranasinghe Atapattu Mudiyanselage, Nelman Pushpa
Supervisor:Berg, Mikael
Examiner:Kvarnheden, Anders
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2018
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:None
Supervising department:(VH) > Dept. of Biomedical Sciences and Veterinary Public Health
Keywords:Feline morbillivirus, Canine distemper morbillivirus, Measles morbillivirus, Type I interferon, C protein, V protein
URN:NBN:urn:nbn:se:slu:epsilon-s-9891
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-9891
Subjects:Animal diseases
Language:English
Deposited On:24 Oct 2018 08:18
Metadata Last Modified:20 May 2020 10:53

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