Journal: Journal of molecular and cellular cardiology
Article Title: oxLDL induces inflammatory responses in vascular smooth muscle cells via urokinase receptor association with CD36 and TLR4.
doi: 10.1016/j.yjmcc.2013.11.005
Figure Lengend Snippet: Fig. 5. oxLDL induces uPAR association with TLR4. A. oxLDL-induced association of uPAR and TLR4 was assessed by co-immunoprecipitation. VSMC were treated with 4 μg/ml oxLDL for indicated time points, lysed and uPAR was immunoprecipitated using monoclonal anti-uPAR antibody. TLR4 in the immunoprecipitates was detected using polyclonal anti-TLR4 antibody. B. uPAR/TLR4 association was studied using immunocytochemistry. VSMC were treated with 4 μg/ml oxLDL for 1 h, fixed with 4%PFA and stained for TLR4 (Alexa 488) and uPAR (Alexa 594). C. uPAR/TLR4 association was studied using Duolink PLA. VSMC were treated with 4.5 μg/ml oxLDL for 1 h, fixed with 4%PFA and stained as recommended by Duolink probes' provider. The number of Duolink signals per cell (right panel) was quantified using colony counting tool of ImageJ software. D. oxLDL-induced changes of SMA and myocardin expression were assessed by RT-PCR in VSMC in the presence of 5 μg/ml TLR4 antagonist Cli-095. E. SiCo- and TLR4si-transfected VSMC were treated with 7 μg/ml oxLDL for 48 h. Contractile proteins expression was analyzed by RT-PCR. F. SiCo- and TLR4si-transfected VSMC were treated with 7 μg/ml oxLDL for 48 h. G-CSF and GM-CSF expression was analyzed by RT-PCR. * indicates significant difference (P b 0.05).
Article Snippet: After 18 h cells were transfected with luciferase constructs and incubated for 24 h. oxLDL stimulation was performed in serum for 6 h. TRL2 and TLR4 expression vectors reported by Dr. Golenbock were obtained from Addgene (plasmids 13016 and 13018, respectively); human CD36 expression vector was from InvivoGene; uPAR expression was achieved by lentiviral infection as described [22].
Techniques: Immunoprecipitation, Immunocytochemistry, Staining, Software, Expressing, Reverse Transcription Polymerase Chain Reaction, Transfection