Characterization of DNA Methylomic Signatures in Induced Pluripotent Stem Cells During Neuronal Differentiation
2021
Jennifer Imm | Ehsan Pishva | Ehsan Pishva | Muhammadd Ali | Talitha L. Kerrigan | Aaron Jeffries | Joe Burrage | Enrico Glaab | Emma L. Cope | Kimberley M. Jones | Nicholas D. Allen | Katie Lunnon
In development, differentiation from a pluripotent state results in global epigenetic changes, although the extent to which this occurs in induced pluripotent stem cell-based neuronal models has not been extensively characterized. In the present study, induced pluripotent stem cell colonies (33Qn1 line) were differentiated and collected at four time-points, with DNA methylation assessed using the Illumina Infinium Human Methylation EPIC BeadChip array. Dynamic changes in DNA methylation occurring during differentiation were investigated using a data-driven trajectory inference method. We identified a large number of Bonferroni-significant loci that showed progressive alterations in DNA methylation during neuronal differentiation. A gene–gene interaction network analysis identified 60 densely connected genes that were influential in the differentiation of neurons, with STAT3 being the gene with the highest connectivity.
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