Protein extraction and Western Blotting were performed as described [51 (link)]. Used antibodies were a rabbit anti-Lcn2 antibody (1:1000; abcam, Cambridge, United Kingdom), a mouse anti-TFR1 antibody (1:1000; Sigma Aldrich), a rabbit anti-ferritin antibody (1:500; Sigma), a rabbit anti-Ho1 antibody (1:1000; abcam), a rabbit anti-Irp2 antibody (1:1000; Novusbio, Littleton, CO, USA) and a rabbit actin antibody (1:500; Sigma Aldrich), and appropriate HRP-conjugated secondary antibodies (1:2000, anti-rabbit; 1:4000, anti-mouse; Dako, Glostrup, Denmark). For quantification, densitometry data were acquired on a ChemiDoc Touch Imaging System (Bio-Rad, Hercules, CA, USA) and analyzed with Image Lab 5.2.1. (Bio-Rad).
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