Zika virus NS3 protease and its cellular substrates
Dabrowska, A.; Milewska, A.; Ner-Kluza, J.; Suder, P.; Pyrc, K.
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AO_SCPLOWBSTRACTC_SCPLOWZika virus is a flavivirus discovered in 1947, but the association between Zika virus infection and brain disorders was not demonstrated until 2015 in Brazil. Infection mostly poses a threat to women during pregnancy, since it may cause microcephaly and other neurological dysfunctions in the developing fetus. However, infection is also associated with Guillain-Barre syndrome. The nonstructural NS3 protein is essential for virus replication because it helps to remodel the cellular microenvironment. Several reports show that this protease can process cellular substrates and thereby modify cellular pathways that are important for the virus. Herein, we explored some of the targets of NS3, but we could not confirm the biological relevance of its protease activity. Thus, although mass spectrometry is highly sensitive and useful in many instances, being also able to show directions, where cell/virus interaction occurs, we believe that biological validation of the observed results is essential.
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