Assessment of Established Techniques to Determine Developmental and Malignant Potential of Human Pluripotent Stem Cells
Overview
Affiliations
The International Stem Cell Initiative compared several commonly used approaches to assess human pluripotent stem cells (PSC). PluriTest predicts pluripotency through bioinformatic analysis of the transcriptomes of undifferentiated cells, whereas, embryoid body (EB) formation in vitro and teratoma formation in vivo provide direct tests of differentiation. Here we report that EB assays, analyzed after differentiation under neutral conditions and under conditions promoting differentiation to ectoderm, mesoderm, or endoderm lineages, are sufficient to assess the differentiation potential of PSCs. However, teratoma analysis by histologic examination and by TeratoScore, which estimates differential gene expression in each tumor, not only measures differentiation but also allows insight into a PSC's malignant potential. Each of the assays can be used to predict pluripotent differentiation potential but, at this stage of assay development, only the teratoma assay provides an assessment of pluripotency and malignant potential, which are both relevant to the pre-clinical safety assessment of PSCs.
Two promising approaches in the treatment of myocardial infarction: stem cells and gene therapy.
Gao S, Li D, Wang B, Zhang H, Chen L Front Cardiovasc Med. 2025; 12:1540066.
PMID: 40046966 PMC: 11880279. DOI: 10.3389/fcvm.2025.1540066.
Sung T, Pan Z, Wang T, Lin H, Chang C, Hung L Regen Biomater. 2025; 12:rbaf003.
PMID: 39967781 PMC: 11835233. DOI: 10.1093/rb/rbaf003.
Methods for Pluripotent Stem Cell Characterization: A Narrative Review.
Temsamani F, Agalit A, Idrissi Serhrouchni K Cureus. 2025; 17(1):e77362.
PMID: 39944459 PMC: 11815987. DOI: 10.7759/cureus.77362.
Reassessment of marker genes in human induced pluripotent stem cells for enhanced quality control.
Dobner J, Diecke S, Krutmann J, Prigione A, Rossi A Nat Commun. 2024; 15(1):8547.
PMID: 39358374 PMC: 11447164. DOI: 10.1038/s41467-024-52922-1.
Smith L, Quelch-Cliffe R, Liu F, Aguilar A, Przyborski S Stem Cell Rev Rep. 2024; 21(1):107-125.
PMID: 39340737 PMC: 11762643. DOI: 10.1007/s12015-024-10793-5.