Cloning and cell line generation was performed as described previously [29 (link)]. Briefly, full length Ikaros isoform (Ik1) with IRES-GFP and an empty vector IRES-GFP control were cloned into the TET-inducible expression vector pLVX-TRE3G-IRES (Takara Bio, San Jose, CA, USA) and transduced into B-ALL cells expressing TET activator pLVX-EF1a-Tet3G (Takara Bio, San Jose, CA, USA). Expression of wild-type IK1 and GFP control samples was induced with the addition of 1 ug/mL doxycycline, a TET analog.
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