Reprogramming enriches for somatic cell clones with small-scale mutations in cancer-associated genes
| Autor: | Felix F. Adams, Axel Schambach, Colin F. Davenport, Sandra Menke, Marie Dorda, Alexandra Haase, Stephanie Wunderlich, Lutz Wiehlmann, Adrian Schwarzer, Sylvia Merkert, Maike Kosanke, Marc-Jens Kleppa, Ulrich Martin, Katarzyna Osetek |
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| Rok vydání: | 2020 |
| Předmět: |
Somatic cell
Induced Pluripotent Stem Cells Biology Cell Line Small hairpin RNA 03 medical and health sciences 0302 clinical medicine Neoplasms Drug Discovery Exome Sequencing Genetics Human Umbilical Vein Endothelial Cells Humans Induced pluripotent stem cell Molecular Biology Gene Exome sequencing Cells Cultured 030304 developmental biology Aged Pharmacology Whole genome sequencing 0303 health sciences Cell Death Point mutation Cell Cycle Cell Differentiation Cellular Reprogramming Clone Cells 030220 oncology & carcinogenesis Mutation Molecular Medicine Original Article Reprogramming |
| Zdroj: | Mol Ther |
| ISSN: | 1525-0024 |
| Popis: | Cellular therapies based on induced pluripotent stem cells (iPSCs) come out of age and an increasing number of clinical trials applying iPSC-based transplants are ongoing or in preparation. Recent studies, however, demonstrated a high number of small-scale mutations in iPSCs. Although the mutational load in iPSCs seems to be largely derived from their parental cells, it is still unknown whether reprogramming may enrich for individual mutations that could lead to loss of functionality and tumor formation from iPSC derivatives. 30 hiPSC lines were analyzed by whole exome sequencing. High accuracy amplicon sequencing showed that all analyzed small-scale variants pre-existed in their parental cells and that individual mutations present in small subpopulations of parental cells become enriched among hiPSC clones during reprogramming. Among those, putatively actionable driver mutations affect genes related to cell-cycle control, cell death, and pluripotency and may confer a selective advantage during reprogramming. Finally, a short hairpin RNA (shRNA)-based experimental approach was applied to provide additional evidence for the individual impact of such genes on the reprogramming efficiency. In conclusion, we show that enriched mutations in curated onco- and tumor suppressor genes may account for an increased tumor risk and impact the clinical value of patient-derived hiPSCs. |
| Databáze: | OpenAIRE |
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