miRNA-mediated control of exogenous OCT4 during mesenchymal-epithelial transition increases measles vector reprogramming efficiency
Year: 2021
Type: article
Abstract: OCT4 is a key mediator of induced pluripotent stem cell (iPSC) reprogramming, but the mechanistic insights into the role of exogenous OCT4 and timelines that initiate pluripotency remain to be resolved. Here, using measles reprogramming vectors, we present microRNA (miRNA) targeting of exogenous OCT4 to shut down its expression during the mesenchymal to the epithelial transition phase of reprogramming. We showed that exogenous OCT4 is required only for the initiation of reprogramming and is dispensable for the maturation stage. However, the continuous expression of SOX2 , KLF4 , and c-MYC is necessary for the maturation stage of the iPSC. Additionally, we demonstrate a novel application of miRNA targeting in a viral vector to contextually control the vector/transgene, ultimately leading to an improved reprogramming efficiency. This novel approach could be applied to other systems for improving the efficiency of vector-induced processes.
Authors: Ramya Rallabandi, Brenna Sharp, Conrad Cruz, Qi Wang, Alexis Locsin, Christopher B. Driscoll, Ella Lee, Tim Nelson, Patricia Devaux
Institution: Mayo Clinic
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $3,900
Awards: Single non-integrating RNA vector for gene editing and reprogramming of Fanconi anemia fibroblasts, G4777816300, G6887217874, Measles vectors for genomic modification-free induced pluripotent stem cells, Single non-integrating RNA vector for gene editing and reprogramming of Fanconi anemia fibroblasts, Mayo Clinic Comprehensive Cancer Center Support Grant, PhD Training Program in Virology and Gene Therapy
OpenAlex ID: W3215055369