{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent studies have identified SPRR5 as a previously uncharacterized molecule that serves as an essential positive regulator of keratinocyte differentiation within the human epidermis. Its expression is tightly controlled through the action of the lncRNA LINC00941, which is enriched in progenitor keratinocytes and functions to repress both differentiation and SPRR5 itself. This regulatory relationship underscores the importance of SPRR5 in driving the maturation process of keratinocytes and maintaining epidermal homeostasis."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nFurther analysis revealed that SPRR5 deficiency leads to an induction of a significant subset of genes, with 54.8% of genes repressed in SPRR5-absent epidermal tissue being induced upon LINC00941 depletion. These findings suggest that both SPRR5 and LINC00941 act within a shared molecular pathway, where LINC00941’s inhibitory effect on differentiation is partially mediated through its repression of SPRR5."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nCollectively, the data position SPRR5 as a critical activator of keratinocyte differentiation and a key molecule in epidermal tissue regulation. The elucidation of its function not only expands our understanding of the molecular underpinnings of skin homeostasis but also highlights potential therapeutic targets for disorders involving abnormal keratinocyte differentiation."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Christian Ziegler, Johannes Graf, Stefan Faderl, et al. "}, {"type": "b", "children": [{"type": "t", "text": "The long non-coding RNA LINC00941 and SPRR5 are novel regulators of human epidermal homeostasis."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "EMBO Rep (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.15252/embr.201846612"}], "href": "https://doi.org/10.15252/embr.201846612"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30622217"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30622217"}]}]}]}