Abstract | BACKGROUND: METHODOLOGY/PRINCIPAL FINDINGS: Upon infecting murine neuroblastoma cells and primary cortical neurons with JEV the expression profile of key proinflammatory cyto/ chemokines were analyzed by qRT-PCR and bead array, both before and after ablation of RIG-I. Immunoblotting was performed to evaluate the levels of key molecules downstream to RIG-I leading to production of proinflammatory mediators. Changes in the intracellular viral antigen expression were confirmed by intracellular staining and immunoblotting. JEV infection induced neuronal expression of IL-6, IL-12p70, MCP-1, IP-10 and TNF-α in a time-dependent manner, which showed significant reduction upon RIG-I ablation. Molecules downstream to RIG-I showed significant changes upon JEV- infection, that were modulated following RIG-I ablation. Ablation of RIG-I in neurons also increased their susceptibility to JEV. CONCLUSIONS/SIGNIFICANCE: In this study we propose that neurons are one of the potential sources of proinflammatory cyto/ chemokines in JEV-infected brain that are produced via RIG-I dependent pathways. Ablation of RIG-I in neurons leads to increased viral load and reduced release of the cyto/ chemokines.
|
Authors | Arshed Nazmi, Kallol Dutta, Anirban Basu |
Journal | PloS one
(PLoS One)
Vol. 6
Issue 6
Pg. e21761
( 2011)
ISSN: 1932-6203 [Electronic] United States |
PMID | 21738791
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
Chemical References |
- Ccl2 protein, mouse
- Chemokine CCL2
- Interleukin-6
- Tumor Necrosis Factor-alpha
- Interleukin-12
- Ddx58 protein, mouse
- DEAD Box Protein 58
- DEAD-box RNA Helicases
|
Topics |
- Animals
- Cell Line
- Cell Line, Tumor
- Chemokine CCL2
(metabolism)
- DEAD Box Protein 58
- DEAD-box RNA Helicases
(genetics, metabolism)
- Encephalitis Virus, Japanese
(physiology)
- Immunity, Innate
(genetics, physiology)
- Interleukin-12
(metabolism)
- Interleukin-6
(metabolism)
- Mice
- Mice, Inbred BALB C
- Neurons
(metabolism, virology)
- Tumor Necrosis Factor-alpha
(metabolism)
|