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- W4323074007 abstract "Abstract In vivo reprogramming using the transient expression of Oct3/4, Sox2, Klf4 and c□Myc (OSKM) transcription factors can be used to induce tissue regeneration. A cyclic regime for short□term OSKM expression has been shown to promote regeneration of several organs however its impact on the brain remains largely unknown. We investigated the effects of a cyclic short-term OSKM expression on the choroid plexus (CP), a highly vascularized tissue found within the brain ventricles which is responsible for producing the cerebrospinal fluid (CSF). Transient reprogramming was done on 8-week-old mice carrying the polycistronic OSKM cassette under tetracycline operator (tetO) and confirmed the successful transient reprogramming. We then performed the analysis of the CP at cellular and molecular levels. The CP tissue exhibited minor morphological changes in height and area of epithelial cells. We did not observe any significant differences in the integrity of the brain-CSF barrier but noticed an increase of NKCC1 expression, a protein involved in CSF production. A whole transcriptome analysis (RNA-seq) was also carried on the tissue and showed no difference in gene expression after the transient reprogramming, at the exception of blood-related genes. Our results indicate that surprisingly the CP mainly remains insensible to in vivo transient reprogramming as only morphological and protein changes were observed in the tissue, suggesting that translational changes might be at stake during the reprogramming process but are not present at the transcriptomic level. Our results also highlight that more tailored strategies need to be developed for exploring the potential of CP reprogramming in regenerative medicine." @default.
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- W4323074007 date "2023-03-01" @default.
- W4323074007 modified "2023-10-16" @default.
- W4323074007 title "Impact of in vivo cyclic reprogramming on the choroid plexus" @default.
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- W4323074007 doi "https://doi.org/10.1101/2023.02.28.530533" @default.
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