Cells were subjected to a double knock-down protocol using Lipofectamine RNAiMAX (Life Technologies) to deliver 10 nM of RhoGDIα (#1: s698 - CCAGCAUACGUACAGGAAA, #2: s699 - GUCUAACCAUGAUGCCUUA, #3: s700 - CCAUGAUGCCUUAACAUGU, Ambion Silencer Select, Life Technologies), RhoGDIβ (#1: s455 - GGAAGGUUCUGAAUAUAGA, #2: s456 - CCAUGGACCUUACUGGAGA, #3: s224014 - GUGGAUAAAGCAACAUUUA, Ambion Silencer Select, Life Technologies), Ubc9 (stealth predesigned UBE2IHSS111130 - UCGAACCACCAUUAUUUCACCCGAA, Life Technologies) or 100 nM PIAS1-4 (PIAS1 – GGAUCAUUCUAGAGCUUUA, PIAS2 – CUUGAAUAUUACAUCUUUA, PIAS3 – CCCUGAUGUCACCAUGAAA, PIAS4 – GGAGUAAGAGUGGACUGAA) [23] (link) siRNA oligos. As a control, 100 nM of Luciferase (CGUACGCGGAAUACUUCGA, Sigma) siRNA oligo was used. Cells were transfected 48 and 24 hours before harvest.
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