Journal: Journal of Cell Science
Article Title: The centrosomal deubiquitylase USP21 regulates Gli1 transcriptional activity and stability
Figure Lengend Snippet: USP21 modulates Hh signaling and Gli1 transcriptional activity. (A) NIH3T3 cells were treated with USP21-targeting siRNA oligonucleotides (#10, #11, #12) or a non-targeting control (NT3), serum-starved and then incubated with SAG (100 nM) for 4 h before mRNA extraction. USP21 and Gli1 mRNA levels were measured by performing quantitative reverse-transcription PCR and normalised to RNA levels of Pol2 ( n =3 independent experiments, mean±s.d.). x -axis labels given in bottom panel also apply to the top panel. (B) HEK293T cells were treated with USP21-targeting siRNA oligonucleotides (#5, #6) or non-targeting control oligo (NT3), or were treated with transfection reagent alone (Mock). 24 h before lysis, cells were transfected with Gli-responsive firefly luciferase and Renilla luciferase reporters (pGLB3B-12Gli-Luc and pRL-Renilla-TK), as well as with a Gli1 expression construct (HA–Gli1). Efficiency of the knockdown was assessed by western blotting ( n =2, bars show the range). (C) HEK293T cells were transfected with Gli-responsive firefly luciferase, Renilla luciferase reporters, HA–Gli1 and the indicated amounts of GFP, GFP–USP21 or GFP–USP21CS plasmids. Protein expression was assessed by western blotting (IB, immunoblot) for GFP. (GFP, n =5; USP21 and USP21CS, n =6; mean±s.d.; one-way ANOVA and Dunnett's test, ** P
Article Snippet: Quantitative reverse-transcription PCR Cells were lysed, and mRNA was extracted using the RNAeasy mini kit (Qiagen). cDNA synthesis was performed using 1 µg RNA with RevertAid H-minus M-MuLV reverse transcriptase (Fermentas) using an oligo-dT primer (Promega).
Techniques: Activity Assay, Incubation, Polymerase Chain Reaction, Transfection, Lysis, Luciferase, Expressing, Construct, Western Blot