tetano
Editor, Senior Moderator
Biochim Biophys Acta. 2014 Apr 26. pii: S0925-4439(14)00104-5. doi: 10.1016/j.bbadis.2014.04.017. [Epub ahead of print]
Regulatory roles of c-jun in H5N1 influenza virus replication and host inflammation.
Xie J1, Zhang S1, Hu Y1, Li D1, Cui J1, Xue J1, Zhang G1, Khachigian LM2, Wong J3, Sun L4, Wang M5.
Author information
Abstract
The cytokine storm which is a great burden on humanity in highly pathogenic influenza virus infections requires activation of multiple signaling pathways. These pathways, such as MAPK and JNK, are important for viral replication and host inflammatory response. Here we examined the roles of JNK downstream molecule c-jun in host inflammatory responses and H5N1 virus replication using a c-jun targeted DNAzyme (Dz13). Transfection of Dz13 significantly reduced H5N1 influenza virus replication in human lung epithelial cells. Concomitantly, there was a decreased expression of pro-inflammatory cytokines (tumor necrosis factor (TNF)-α, interferon (IFN)-β and interleukin (IL)-6) in c-jun suppressed cells, while the expression of anti-inflammatory cytokines, such as IL-10, was increased. In vivo, compared with control groups, suppression of c-jun improved the survival rate of the mice infected with H5N1 virus (55.5% in Dz13 treated mice versus ≤11% of control mice) and decreased the CD8+ T cells proliferation. Simultaneously, the pulmonary inflammatory response and viral burden also decreased in the Dz13 treated group. Thus, our data demonstrated a critical role for c-jun in the establishment of H5N1 infection and subsequent inflammatory reactions, which suggest that c-jun may be a potential therapeutic target for viral pneumonia.
Copyright ? 2014. Published by Elsevier B.V.
KEYWORDS:
DNAzyme, H5N1, c-jun, inflammation
PMID:
24780373
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24780373
Regulatory roles of c-jun in H5N1 influenza virus replication and host inflammation.
Xie J1, Zhang S1, Hu Y1, Li D1, Cui J1, Xue J1, Zhang G1, Khachigian LM2, Wong J3, Sun L4, Wang M5.
Author information
Abstract
The cytokine storm which is a great burden on humanity in highly pathogenic influenza virus infections requires activation of multiple signaling pathways. These pathways, such as MAPK and JNK, are important for viral replication and host inflammatory response. Here we examined the roles of JNK downstream molecule c-jun in host inflammatory responses and H5N1 virus replication using a c-jun targeted DNAzyme (Dz13). Transfection of Dz13 significantly reduced H5N1 influenza virus replication in human lung epithelial cells. Concomitantly, there was a decreased expression of pro-inflammatory cytokines (tumor necrosis factor (TNF)-α, interferon (IFN)-β and interleukin (IL)-6) in c-jun suppressed cells, while the expression of anti-inflammatory cytokines, such as IL-10, was increased. In vivo, compared with control groups, suppression of c-jun improved the survival rate of the mice infected with H5N1 virus (55.5% in Dz13 treated mice versus ≤11% of control mice) and decreased the CD8+ T cells proliferation. Simultaneously, the pulmonary inflammatory response and viral burden also decreased in the Dz13 treated group. Thus, our data demonstrated a critical role for c-jun in the establishment of H5N1 infection and subsequent inflammatory reactions, which suggest that c-jun may be a potential therapeutic target for viral pneumonia.
Copyright ? 2014. Published by Elsevier B.V.
KEYWORDS:
DNAzyme, H5N1, c-jun, inflammation
PMID:
24780373
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24780373