*2.1. Materials*

DMEM + Glutamax, trypsin + EDTA (0.25%) and fetal calf serum (FBS) were purchased from Gibco (Thermo Fisher Scientific, Waltham, MA, USA). For peptide synthesis, all *<sup>N</sup>*-<sup>α</sup>-fluorenylmethyloxycarbonyl (Fmoc) L-amino acids, *p*-benzyloxybenzyl alcohol resins (Wang resin) were obtained from Merck (Darmstadt, Germany). Coupling reagen<sup>t</sup> *O*-(7-azabenzotriazole-1-yl)-*N,N,N',N'*-tetramethyluronium hexafluorophosphate (HATU) was purchased from ChemPep (Wellington, FL, USA). Formic acid was purchased from Fluka (Ammerbuch, Germany). Chemical reagents were purchased from Sigma-Aldrich (St Louis, MO, USA) and Iris Biotech (Marktredwitz, Germany). Acetonitrile, trifluoroacetic acid (TFA), 2,2-azinobis(3-ethylbenzo-thiazoline 6-sulfonate) (ABTS), 1,1-diphenyl-2-picrylhydrazyl (DPPH), 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT), potassium persulfate, *tert*-butyl hydroperoxide (TbOOH), PBS, isopropanol, dimethyl sulfoxide (DMSO), Trolox C and Corning Incorporated Transwell ® 12 well plates were all obtained from Sigma-Aldrich (St Louis, MO, USA).
