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001-es BibID:	BIBFORM125810
Első szerző:	Dull Katalin (molekuláris biológus, genetikus)
Cím:	Sebum lipids selectively modulate gene expression in keratinocytes / Dull K., Ádám D., Póliska S., Aboud H., Szegedi A., Oláh A., Töröcsik D.
Dátum:	2024
ISSN:	0022-202X 1523-1747
Megjegyzések:	Changes in sebum quantity and composition have been reported in several skin diseases, suggesting a (patho) physiological role, but their effect on different cell types is not well characterized. Based on our previous findings that sebum lipids can penetrate the epidermis, this study aimed to investigate their effects on keratinocytes using pro-inflammatory (stearic acid and palmitic acid), anti- inflammatory lipids (linoleic acid and oleic acid) and squalene. In our experimental settings, HaCaT keratinocytes in subconfluent cultures with high proliferation rates (representing basal epidermal keratinocytes) and those in advanced differentiation in postconfluent cultures maintained under high Ca2+ concentrations (representing suprabasal epidermal layers) were treated with different sebum-composing lipids. The cell differentiation state was validated by measuring the expression of markers by RT-qPCR, and whole transcriptome analysis was performed using STRING platform. We found that keratinocytes exhibited differentiation-dependent unique gene expression patterns in response to the lipids. While squalene had the most significant effect on proliferating keratinocytes, palmitic and oleic acid treatments had a greater effect on differentiated cells. All lipids influenced cell proliferation and pathways related to cell cycle regulation. All treatments affected immune system-related pathways: in both differentiated and proliferating keratinocytes squalene, palmitic acid, and stearic acid treatments affected IL-17 signaling, cytokine signaling, interferon a/b, and TLR signaling. In this regard, the effect of stearic acid was the least pronounced. In conclusion, our results suggest that keratinocytes are able to selectively recognize and respond to the different lipids that make up sebum. Further characterization of the pathways involved may bring us closer to understanding the relevance of changes in sebum composition in different conditions such as acne and may provide the basis for improving sebum modulation therapies.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idézhető absztrakt folyóiratcikk sebocyte acne keratinocyte
Megjelenés:	Journal Of Investigative Dermatology. - 144 : 12 (2024), p. S264. -
További szerzők:	Ádám Dorottya (1991-) (molekuláris biológus) Póliska Szilárd (1978-) (biológus) Aboud, H. Szegedi Andrea (1964-) (bőrgyógyász) Oláh Attila (1984-) (élettanász) Töröcsik Dániel (1979-) (bőrgyógyász)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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