Lentiviral PTK2B shRNA plasmids were purchased from Sigma-Aldrich (MISSION shRNA Plasmid DNA protein tyrosine kinase 2 beta (PTK2B/PYK2) SHCLND-NM_004103. 3-763S1C1 & NM_004103. 3-4018S21C1). The lentiviral packaging mix was also purchased from Sigma (SHP001). Plasmids were transfected using Lipofectamine™ 3000 Reagent (L3000001, ThermoFisher Scientific) and following manufacturer recommendations. The lentiviral particles used to infect SkBr3 and MDA-MB-453 were produced corresponding to the manufacturer recommendations and as previously described [29 (link)].
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