title: KSRP silencing favors neural differentiation of P19 teratocarcinoma cells.
abstract: Understanding the molecular mechanisms that control the balance between multipotency and differentiation is of great importance to elucidate the genesis of both developmental disorders and cell transformation events. To investigate the role of the RNA binding protein KSRP in controlling neural differentiation, we used the P19 embryonal carcinoma cell line that is able to differentiate into neuron-like cells under appropriate culture conditions. We have recently reported that KSRP controls the differentiative fate of multipotent mesenchymal cells owing to its ability to promote decay of unstable transcripts and to favor maturation of selected micro-RNAs (miRNAs) from precursors. Here we report that KSRP silencing in P19 cells favors neural differentiation increasing the expression of neuronal markers. Further, the expression of two master transcriptional regulators of neurogenesis, ASCL1 and JMJD3, was enhanced while the maturation of miR-200 family members from precursors was impaired in KSRP knockdown cells. These molecular changes can contribute to the reshaping of P19 cells transcriptome that follows KSRP silencing. Our data suggests that KSRP function is required to maintain P19 cells in a multipotent undifferentiated state and that its inactivation can orient cells towards neural differentiation.
authors: University of Genova, Genova, Italy.
authors: Matteo
authors: M
authors: Giovarelli
authors: Gabriele
authors: G
authors: Bucci
authors: Michela
authors: M
authors: Pasero
authors: Roberto
authors: R
authors: Gherzi
authors: Paola
authors: P
authors: Briata
mesh_terms: D000818:Animals; D051792:Basic Helix-Loop-Helix Proteins / Q000378:metabolism; D045744:Cell Line, Tumor; D020868:Gene Silencing; D056484:Jumonji Domain-Containing Histone Demethylases / Q000378:metabolism; D059630:Mesenchymal Stem Cells / Q000166:cytology; D051379:Mice; D035683:MicroRNAs / Q000378:metabolism; D055495:Neurogenesis / Q000235:genetics*; D012322:RNA Precursors / Q000378:metabolism; D020871:RNA Stability; D016601:RNA-Binding Proteins / Q000235:genetics* / Q000378:metabolism; D018243:Teratocarcinoma; D015534:Trans-Activators / Q000235:genetics* / Q000378:metabolism; D014158:Transcription, Genetic; D059467:Transcriptome
chemical_list: D051792:Basic Helix-Loop-Helix Proteins; D056484:Jumonji Domain-Containing Histone Demethylases; D035683:MicroRNAs; D012322:RNA Precursors; D016601:RNA-Binding Proteins; D015534:Trans-Activators; C499317:Ascl1 protein, mouse; C507913:Khsrp protein, mouse; C543719:Mirn200 microRNA, mouse; C523761:Kdm6b protein, mouse