Nuclear Topology, Epigenetics, and Keratinocyte Differentiation

The document discussed the role of nuclear topology and epigenetics in keratinocyte differentiation, highlighting how changes in nuclear shape and chromatin organization correlate with gene expression during this process. Basal keratinocytes have vertically oriented nuclei that become horizontally shaped as they move to the upper layers, with associated chromatin compaction and reduced nuclear volume. Using 3D confocal microscopy and immunohistochemistry, the study showed that active gene expression markers are highest in basal layers and decrease in the granular layer. The findings emphasized the importance of nuclear architecture and epigenetic modifications for developing specific therapies for diseases, and highlighted the role of long non-coding RNAs, such as TINCR, in controlling epidermal differentiation. The authors declared no conflict of interest.