From: Defining synthetic surfaces for human pluripotent stem cell culture
Parameters | Method | Strength of evidence of pluripotency |
---|---|---|
Physical characteristics (daily/weekly) | Daily visual assessment of cell/colony morphology | Weak, subjective |
 | calculate adhesion efficiency, population doubling time |  |
Expression of molecular markers eg. OCT4, NANOG, SOX2, REX1 (following passages 1, 5 and >10) | Immunocytochemical staining, flow cytometry, RT-PCR, microarray assays | Moderate-strong. Depending on marker(s) assessed. |
Epigenetic profiling | Bisulfite sequencing, ChIP, microarray assays | Moderate-strong. Depending on marker(s) assessed. |
Differentiation potential (following >10 passages) | Embryoid body differentiation (in vitro) with RT-PCR analysis for molecular markers of differentiation | Very strong |
 | Teratoma formation assay (in vivo) with histological determination of cells from the three embryonic germ layers | Gold standard |
Genetic stability (following >10 passages) | G-banding, FISH, SNP analysis | Not applicable. Important to identify genetically transformed cultures, not indicative of differentiation potential |