hUCs were collected according to methods reported previously [14 (link), 18 (link)]. Briefly, 100–1000 ml of urine was collected from donors, centrifuged at 1010 × g for 5 minutes, and washed with phosphate-buffered saline (PBS). The cells were maintained in 24-well plates coated with 0.1% gelatin (ES-006-B; Millipore, Germany) in RM1 medium (50% Renal Epithelial Cell Growth Medium (REGM) (CC-3190; Lonza, USA) and 44% Dulbecco's Modified Eagle Medium (DMEM) (SH30022; HyClone, USA) supplemented with 5% fetal bovine serum (FBS) (P30-3302; PAN Biotech, Germany), 0.5% nonessential amino acids (NEAA) (11140050; Gibco, USA), 0.5% GlutaMax (35050-061; Gibco, USA)) and 1 × Primocin (ant-pm-2; InvivoGen, USA); 0.25% trypsin-EDTA (25200072; Gibco, USA) was used for dissociation of primary hUCs. RM1 or RM2 (82% DMEM (SH30022; HyClone, USA) supplemented with 5% FBS, 1% human keratinocyte growth supplement (HKGS) (S-001-5; Gibco, USA), 1% NEAA, and 1% GlutaMax) was used for hUC culture.
The HN4 hESC line was obtained from the Chinese Academy of Sciences, and both HN4 and hiPSCs were maintained in the hESC medium BioCISO (BC-PM0001; BIOCARE Biotech, China) in plates coated with Matrigel (354277; Corning, USA).
The HN4 hESC line was obtained from the Chinese Academy of Sciences, and both HN4 and hiPSCs were maintained in the hESC medium BioCISO (BC-PM0001; BIOCARE Biotech, China) in plates coated with Matrigel (354277; Corning, USA).
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