Virology 2014-12-01

Infection of human amniotic and endothelial cells by Japanese encephalitis virus: Increased expression of HLA-F.

Gaurav Kumar, Onkar Sanjay Date, Kwang Sik Kim, Ramanathapuram Manjunath

文献索引:Virology 471-473 , 29-37, (2015)

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摘要

Productive infection of human amniotic and endothelial cell lines with Japanese encephalitis virus (JEV) was established leading to the induction of NFκB and HLA-F, a non-classical MHC molecule. Induction of the HLA-F gene and protein in JEV-infected cells was shown to be NFκB dependent since it was blocked by inhibitors of NFκB activation. ShRNA targeting lentivirus-mediated stable knockdown of the p65 subunit of NFκB inhibited JEV-mediated induction of HLA-F both in the amniotic cell line, AV-3 as well as the human brain microendothelial cell line, HBMEC. The induction of HLA-F by treatment of AV-3 with TNF-α was also inhibited by ShRNA mediated knockdown of NFκB. TNF-α treatment of HEK293T cells that were transfected with reporter plasmids under the control of HLA-F enhancer A elements resulted in significant transactivation of the luciferase reporter gene. NFκB-mediated induction of HLA-F following JEV infection and TNF-α exposure is being suggested for the first time. Copyright © 2014 Elsevier Inc. All rights reserved.

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