Journal: Computational and Structural Biotechnology Journal
Article Title: The impact of episporic modification of Lichtheimia corymbifera on virulence and interaction with phagocytes
doi: 10.1016/j.csbj.2021.01.023
Figure Lengend Snippet: Luciferase reporter activation after stimulation of Toll-like receptors (TLRs) -expressing Flp-In™-293 NF-κB cells with spores of Lichtheimia corymbifera after different treatments for 5 h . Flp-In™-293 NF-κB cells stably expressing different Toll like receptors (TLR1,2,4,5,6) and cofactors (CD14, MD2) and additional knock out of TLR5 (TLR5-ko) were generated for TLR activation assays. All cell lines have a stably integrated promotor that is responding to the transcription factor NF-κB (nuclear factor 'kappa-light-chain-enhancer' of activated B-cells) that translocates from cell plasma to the nucleus upon TLR activation. The responsive promotor regulates the expression of the luciferase reporter gene. The selected TLR combinations were: TLR2-CD14 with TLR5-ko, TLR2-TLR6-CD14, TLR2-TLR1 -CD14, CD14- MD2- TLR4 and TLR5. The basic cell line with luciferase reporter gene was used as comparison and has an additional TLR5-ko of the natural gene. Cell lines were seeded into 96-well-plates. The activity of the luciferase after 5 h of stimulation was normalized to the mean value of the pre run (2 h before stimulation). Data was analyzed by two-way ANOVA and Bonferroni posttest (*** indicates P < 0.001, * indicates P < 0.05).
Article Snippet: Plasmids coding for Toll-like receptors (TLR) were purchased from Addgene (www.addgene.org): pcDNA3-TLR1-YFP, pcDNA3-TLR2-YFP, pcDNA3-TLR4-YFP, pcDNA3-TLR5-CFP, pcDNA3-TLR6-YFP, pcDNA3-CD14 (Addgene plasmids # 13014, # 13016, # 13018, # 13019, # 13020, # 13645) were a gift from Douglas T. Golenbock (University of Massachusetts Medical School, division of Infectious Disease and Immunology, Worcester, MA, USA) to Addgene).
Techniques: Luciferase, Activation Assay, Expressing, Stable Transfection, Knock-Out, Generated, Clinical Proteomics, Comparison, Activity Assay