sirna against trim21 (OriGene)
Structured Review

Sirna Against Trim21, supplied by OriGene, used in various techniques. Bioz Stars score: 91/100, based on 5 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/trim21/TRIM21+Human+siRNA+Oligo+Duplex/pm24485101-70-0-6
Average 91 stars, based on 5 article reviews
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1) Product Images from "Regulatory role of TRIM21 in the type-I interferon pathway in Japanese encephalitis virus-infected human microglial cells."
Article Title: Regulatory role of TRIM21 in the type-I interferon pathway in Japanese encephalitis virus-infected human microglial cells.
Journal: Journal of neuroinflammation
doi: 10.1186/1742-2094-11-24
Figure Legend Snippet: Figure 1 TRIM21 attenuates the JEV mediated upregulation of the p-IRF3 level and IFN-β level in human microglial cells. (A) PCR amplification of TRIM21 and TRIM21 (ΔRING) primers was carried out and the product run on 1% agarose gel (upper panel). Expression of wild-type TRIM21 as well as the TRIM21 (ΔRING) domain was confirmed by Western blotting (lower panel). (B) CHME3 cells were transfected with 4 μg of TRIM21 plasmid or TRIM21 (ΔRING) for 48 h. Cell lysates were resolved on SDS-PAGE and probed with anti-TRIM21, anti-IRF-3 and anti-β- tubulin antibodies by Western blotting. Representative image is shown. (C) Cells transfected with TRIM21 or TRIM21 (ΔRING) were infected with JEV, and total RNA was isolated post 48 h of transfection. Real-time PCR for IFN-β1 was performed, and an average of three independent sets of experiments is plotted and shown. (D) Luciferase assay for IFN-β for cells transfected with TRIM21 or TRIM21 (ΔRING) and infected with JEV along with respective controls was performed. Luciferase activity normalized against β-gal activity was averaged and plotted (*p <0.05, **p < 0.01, ***p < 0.001 from control).
Techniques Used: Amplification, Agarose Gel Electrophoresis, Expressing, Western Blot, Transfection, Plasmid Preparation, SDS Page, Infection, Isolation, Real-time Polymerase Chain Reaction, Luciferase, Activity Assay, Control
Figure Legend Snippet: Figure 4 JEV induces TRIM21 protein levels in human microglial cells in a time-dependent manner. (A) CHME3 cells were either un-infected or infected with JEV at MOI 5 for 6, 12, 24 and 36 h. Cell lysates were resolved on SDS-PAGE and probed with anti-TRIM21 antibody and anti-β- tubulin antibody (loading control) by Western blotting. A representation of three independent experiments is shown along with densitometry analysis with normalization of TRIM21 against β-tubulin, averaging and plotting. (B) CHME3 cells were infected with JEV for 24 h (MOI 5). Total RNA was isolated from harvested cells. cDNA prepared by reverse transcription of control and infected samples was used as a template for qPCR against primers for TRIM21 gene. Average fold change in the TRIM21 mRNA level from three independent experiments is plotted and shown (*p < 0.05, **p < 0.01, ***p < 0.001 from control, #p from 6 h, $p from 12 h).
Techniques Used: Infection, SDS Page, Control, Western Blot, Isolation, Reverse Transcription
Figure Legend Snippet: Figure 5 TRIM21 knockdown facilitates JEV-mediated IRF3 activation and upregulation of the IFN-β level. (A) Cells were either transfected with negative control RNA (NC) or transfected with 10nM siRNA against TRIM21 for 48 h. Cell lysates were resolved on SDS-PAGE and probed with anti-TRIM21 antibody and anti-β-tubulin antibody by Western blotting. A representative image is shown. (B) Cells were either non-transfected (C), transfected with negative control RNA (NC) or with TRIM21 siRNA for 24 h followed by JEV infection for 24 h. Cell lysates were resolved on SDS-PAGE and probed with anti-p-IRF3 antibody, anti-IRF3 and anti-β-tubulin antibodies (loading control) by Western blotting. A representative of three independent experiments is shown. Densitometry analyses of Western blot experiments were performed with normalizing p-IRF-3 and p-IRF-3 against β-tubulin. (C) Real-time PCR for IFN-β1 for siRNA-transfected and JEV-infected cells along with the respective controls was performed and averaged for three independent sets of experiments. (D) Luciferase assay for IFN-β for cells transfected with siRNA against TRIM21 and infected with JEV along with respective controls was performed. Luciferase activity normalized against β-gal activity was averaged and plotted (**p < 0.01, ***p < 0.001 from control).
Techniques Used: Knockdown, Activation Assay, Transfection, Negative Control, SDS Page, Western Blot, Infection, Control, Real-time Polymerase Chain Reaction, Luciferase, Activity Assay
Figure Legend Snippet: Figure 6 Model showing a plausible role of TRIM21 as a negative regulator of IRF3 activation and IFN-β production following JEV infection in human microglial cells. JEV infection causes activation of the RIG-1 receptor, initiating a downstream signaling mechanism leading to the activation of IRF-3. Phosphorylated IRF-3 dimerizes and translocates into the nucleus, where it leads to the transcription and production of IFN-β. JEV infection also induces the TRIM21 protein, which negatively regulates IRF-3 phosphorylation, leading to reduced IFN-β production. The upregulation of TRIM21 is proposed to be a feedback mechanism to inhibit the innate immune response in JEV infection.
Techniques Used: Activation Assay, Infection, Phospho-proteomics
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