Human transcription factors responsive to initial reprogramming predominantly undergo legitimate reprogramming during fibroblast conversion to iPSCs
| Autor: | Kejin Hu, Bradley K. Yoder, John M. Parant, Yvonne J. K. Edwards, Ricardo Raúl Cevallos |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Cell biology
Population genetic processes Induced Pluripotent Stem Cells Kruppel-Like Transcription Factors lcsh:Medicine Stem cells Biology Article Proto-Oncogene Proteins c-myc Kruppel-Like Factor 4 Downregulation and upregulation SOX2 Transduction Genetic Humans natural sciences Cellular Reprogramming Techniques lcsh:Science Induced pluripotent stem cell education Transcription factor Gene Cells Cultured education.field_of_study Multidisciplinary SOXB1 Transcription Factors lcsh:R fungi Lentivirus Fibroblasts Cellular Reprogramming KLF4 lcsh:Q Reprogramming Octamer Transcription Factor-3 Transcription Factors |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020) |
| ISSN: | 2045-2322 |
| Popis: | The four transcription factors OCT4, SOX2, KLF4, and MYC (OSKM) together can convert human fibroblasts to induced pluripotent stem cells (iPSCs). It is, however, perplexing that they can do so only for a rare population of the starting cells with a long latency. Transcription factors (TFs) define identities of both the starting fibroblasts and the end product, iPSCs, and are also of paramount importance for the reprogramming process. It is critical to upregulate or activate the iPSC-enriched TFs while downregulate or silence the fibroblast-enriched TFs. This report explores the initial TF responses to OSKM as the molecular underpinnings for both the potency aspects and the limitation sides of the OSKM reprogramming. The authors first defined the TF reprogramome, i.e., the full complement of TFs to be reprogrammed. Most TFs were resistant to OSKM reprogramming at the initial stages, an observation consistent with the inefficiency and long latency of iPSC reprogramming. Surprisingly, the current analyses also revealed that most of the TFs (at least 83 genes) that did respond to OSKM induction underwent legitimate reprogramming. The initial legitimate transcriptional responses of TFs to OSKM reprogramming were also observed in the reprogramming fibroblasts from a different individual. Such early biased legitimate reprogramming of the responsive TFs aligns well with the robustness aspect of the otherwise inefficient and stochastic OSKM reprogramming. |
| Databáze: | OpenAIRE |
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