Resence of medium alone, flagellin, profilin or LPS for 24 h. Culture supernatants have been then harvested and assayed for IL-6 (b) and IL-12p70 (c) by ELISA. Information shown are representative of 3 independently performed experiments.a250 200 IL-6 (pg/ml) 150 100Percentage of totalTLRb0Medium Flagellin Profilin LPSIL-12p70 (pg/ml)c0 Control vector TLR5 siRNAJ Innate Immun 2014;six:685?94 DOI: ten.1159/Salazar Gonzalez et al.ten,000 Percentage of maximum IL-6 (pg/ml) 1,000 one hundred ten 1 CTDC C14 CTDC C42 IL-12p40 (pg/ml) 100 TLR5 (MFI) 80 60 40 20 0 100 101 102 103 104 FL2-MFI 400 IL-6 (pg/ml) 300 200 100 0 60 40 20LPS Flagellin Profilin1 CTDC C14 CTDC CCTDC CCTDC Cabcd1,500 IL-8 (pg/ml) Isotype control Anti-huTLR5 mAb 1,IL-12p40 (pg/ml)CTDC C14 CTDC CCTDC C14 CTDC C300 200 100*10 01 01 1 0 0 1*01 1 ten 01 0 0 1 1 0. 00 00 10 0. 00 0. 0.Tachyzoites:monocyte (m.o.i.)*0* * *01 ten ten 00 0. 0.Tachyzoites:monocyte (m.o.i.)0.0.1,0.1,1,ef0.Tachyzoites:monocyte (m.o.i.)gFig. 5. TLR5 (R392X) mutation abolishes monocyte cytokine pro-duction right after T. gondii profilin stimulation. Peripheral blood CD14+ monocytes have been purified and stained as described in figure 3. a Histogram overlays of isotype handle versus TLR5 staining of CD14+ monocytes obtained from two donors (CTDC C42, gray histogram; CTDC C14, black histogram). Empty histograms represent isotype handle Ab staining (black line for CTDC C14 and gray line for CTDC C42). b Imply fluorescence intensity (MFI) with the samples. c, d Cell suspensions from the very same donors had been then cultured inside the presence of medium alone, LPS, flagellin or profilin (all at 1 g/ml) for 24 h. Supernatants had been harvested and assayed forIL-6 (c) and IL-12p40 (d) by ELISA. e, f Peripheral blood monocytes from donors CTDC C14 and CTDC C42 were incubated in the presence of live T.81522-68-1 Formula gondii Rh strain tachyzoites (m.1255099-26-3 site o.i. ranging from 1,000 to 0.0001); 24 h later supernatants had been harvested and assayed for IL-6 (e) and IL-12p40 (f). g HEK293 cells have been plated and incubated within the presence of isotype control Ab or anti-huTLR5 mAb and live tachyzoites as indicated in e and f.PMID:23773119 Culture supernatants were harvested and assayed for IL-8 by ELISA. Data shown are representative of triplicate samples from two independent experiments. * p 0.05 amongst donors or amongst isotype manage and anti-huTLR5 mAb therapy as determined by t test.that expressed low and high levels of TLR5. Figure 5b shows the mean fluorescence intensity of such samples and the low/high profiles of TLR5 expression inside CD14+ cells. We then confirmed by real-time genotyping that the cells that showed low levels of TLR5 staining also showed high detection using primers containing the R392X mutation (on the internet suppl. fig. 1, karger/ doi/10.1159/000362367). We then examined their cytokine profile in response to LPS, flagellin and profilin. Figure 5c and d show IL-6 and IL-12p40 levels induced above background (unstimulated control) values. LPS stimulation triggered elevated production of all cytokines tested in cells from each donors. Alternatively, flagellin and profilin triggered IL-6 and IL-12p40 production from TLR5high but not from TLR5 R392X cells (fig. 5c, d), therefore offering proof that a totally functional TLR5 is essential to get a monocyte response to T. gondii profilin. To further establish the biological relevance of TLR5-mediated recognition of T. gondii profilin, we exposed TLR5WT and TLR5R392X peripheralProfilin Triggers Human TLRblood monocytes to reside T. gondii Rh strain.
