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1.

001-es BibID:BIBFORM125809
Első szerző:Ádám Dorottya (molekuláris biológus)
Cím:The TRPM5 antagonist triphenylphosphine oxide increases sebaceous lipogenesis and modulates immune phenotype of human sebocytes in a TRPM5-independent manner / Ádám D., Arany J., Tóth K. F., Petö O., Nyitrai T., Tóth B. I., Póliska S., Zouboulis C. C., Oláh A.
Dátum:2024
Megjegyzések:It has recently been shown that transient receptor potential melastatin 5 (TRPM5) ion channels contributed to the maintenance of the anagen phase of the hair cycle. Because adjacent sebaceous glands also exhibited TRPM5 immunopositivity, topically applied TRPM5 modulators administered with the intention to influence hair growth may also affect sebaceous glands (SGs). Hence, we aimed to assess expression of TRPM5 as well as effects of 2 agonists and 1 antagonist (triphenylphosphine oxide [TPPO]) of TRPM5 on human SZ95 sebocytes. First, using complementary methods (RNA-Seq, RT-qPCR, western blot, siRNA-mediated gene silencing, fluorescent Na+- and Ca2+-measurements), we found that TRPM5 is not expressed in human sebocytes in a functionally active form.While non- cytotoxic (MTT-assay) concentrations of the activators were ineffective, TPPO promoted sebaceous lipogenesis (Nile Red). This effect was TRPM5-independent and was found to be mediated in an Akt- and epidermal growth factor receptor (EGFR)-dependent manner, most likely via the Akt-induced up-regulation of diacylglycerol O-acyltransferase-2. Moreover, TPPO up-regulated interleukin (IL)-6 in an EGFR- and p38a MAPKdependent manner (RT-qPCR), while it decreased release of IL-8 (ELISA), and it down-regulated additional pro-inflammatory cytokines (chemokine (C-X-C motif) ligand [CXCL]-1, CXCL2, CXCL6, colony-stimulating factor 2, IL-32). Collectively, specific TRPM5 modulators are unlikely to exert direct SG-related side effects, while safe TPPO analogues may induce beneficial moderate lipogenic and anti-inflammatory effects in dry skin dermatoses.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idézhető absztrakt
folyóiratcikk
sebocyte
acne
TRPM5
TPPO
Megjelenés:The Journal of Investigative Dermatology. - 144 : 12_Suppl (2024), p. S313. -
További szerzők:Arany József (1990-) (klinikai laboratóriumi kutató, vegyész) Tóth Kinga Fanni (1992-) (molekuláris biológus, élettanász) Pető Orsolya Nyitrai Tamara (1999-) (molekuláris biológus) Tóth István Balázs (1978-) (élettanász) Póliska Szilárd (1978-) (biológus) Zouboulis, Christos C. (1960-) (bőrgyógyász) Oláh Attila (1984-) (élettanász)
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DOI
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2.

001-es BibID:BIBFORM074140
035-os BibID:(WOS)000431188500719
Első szerző:Dajnoki Zsolt (molekuláris biológus)
Cím:Topographical differences in immune and barrier functions of human skin / Z. Dajnoki, G. Béke, A. Kapitány, K. Gáspár, S. Póliska, Z. Hendrik, Z. Péter, D. Törőcsik, T. Bíró, A. Szegedi
Dátum:2018
ISSN:0022-202X 1523-1747
Tárgyszavak:Orvostudományok Klinikai orvostudományok idézhető absztrakt
folyóiratcikk
Megjelenés:Journal of Investigative Dermatology. - 138 : 5S (2018), p. S122. -
További szerzők:Béke Gabriella (1987-) (molekuláris biológus) Kapitány Anikó (1979-) (molekuláris biológus) Gáspár Krisztián (1974-) (bőrgyógyász) Póliska Szilárd (1978-) (biológus) Hendrik Zoltán (1986-) (patológus) Péter Zoltán (1964-) (bőrgyógyász) Töröcsik Dániel (1979-) (bőrgyógyász) Bíró T. Szegedi Andrea (1964-) (bőrgyógyász)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM048835
Első szerző:Dózsa Anikó (Ph.D hallgató, orvos)
Cím:PPARγ-Mediated and Arachidonic Acid-Dependent Signaling is Involved in Differentiation and Lipid Production of Human Sebocytes / Aniko Dozsa, Balazs Dezso, Balazs I. Toth, Attila Bacsi, Szilard Poliska, Emanuela Camera, Mauro Picardo, Christos C. Zouboulis, Tamás Bíró, Gerd Schmitz, Gerhard Liebisch, Ralph Rühl, Eva Remenyik, Laszlo Nagy
Dátum:2014
ISSN:0022-202X
Megjegyzések:The transcriptional basis of sebocyte differentiation and lipid production is mostly unclear. Peroxisome proliferator-activated receptor gamma (PPAR?), a lipid activated transcription factor, has been implicated in differentiation and lipid metabolism of various cell types. Here, we show that PPAR? is differentially expressed in normal and pathological human sebocytes, and appears to have roles in their differentiation and lipid production. We used laser microdissected normal and pathologic human sebaceous glands (SG) and SZ95 cells (immortalized sebocyte cell line) analyzed by RT-qPCR and immunohistochemistry. Lipids were analyzed by quantitative fluorimetry and mass spectrometry based approaches. We have observed that PPAR? and its target genes, ADRP and PGAR, are expressed in sebocytes and show association with their level of differentiation. Also, PPAR? is present in normal and hyperplastic SG, whereas its expression levels are decreased in SG adenoma and SG carcinoma cells, reflecting a maturation-linked expression pattern. Furthermore, in SZ95 sebocytes, naturally occurring lipids including arachidonic acid and arachidonic acid keto-metabolites (eg 5-KETE, 12-KETE) appear to regulate PPAR? signaling pathways, which in turn modulate phospholipid biosynthesis and induce neutral lipid synthesis. Collectively, our findings highlight the importance of endogenous ligand-activated PPAR? signaling in human sebocyte biology and suggest that PPAR? might be a promising candidate for the clinical management of SG disorders.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Calcium (Ca2+) signalling
Ion channel
Membrane transport
Molecular mechanisms of disease
Skin
TRP channels
Megjelenés:Journal of Investigative Dermatology. - 134 : 4 (2014), p. 910-920. -
További szerzők:Dezső Balázs (1951-) (pathológus) Tóth István Balázs (1978-) (élettanász) Bácsi Attila (1967-) (immunológus) Póliska Szilárd (1978-) (biológus) Camera, Emanuela Picardo, Mauro Zouboulis, Christos C. (1960-) (bőrgyógyász) Bíró Tamás (1968-) (élettanász) Schmitz, Gerd Liebisch, Gerhard Rühl, Ralph (1969-) (vegyész) Remenyik Éva (1956-) (bőrgyógyász) Nagy László (1966-) (molekuláris sejtbiológus, biokémikus)
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4.

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)
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM084536
035-os BibID:(WOS)000574374700012 (Scopus)85083321686
Első szerző:Retzlerné Medgyesi Barbara (biotechnológus)
Cím:Rosacea is Characterized by a Profoundly Diminished Skin Barrier / Medgyesi B., Dajnoki Zs., Béke G., Gáspár K., Szabó I. L., Janka E. A., Póliska S., Hendrik Z., Méhes G., Törőcsik D., Bíró T., Kapitány A., Szegedi A.
Dátum:2020
ISSN:0022-202X 1523-1747
Megjegyzések:Rosacea is a common, chronic inflammation of sebaceous gland-rich facial skin characterized by severe skin dryness, elevated pH, transepidermal water loss, and decreased hydration levels. Until now, there has been no thorough molecular analysis of permeability barrier alterations in the skin of rosacea patients. Thus, we aimed to investigate the barrier alterations in papulopustular rosacea (PPR) samples compared to healthy sebaceous gland-rich (SGR) skin, using RNASeq analysis (n=8). Pathway analyses by Cytoscape ClueGo revealed 15 significantly enriched pathways related to skin barrier formation. RT-PCR and immunohistochemistry were used to validate the pathway analyses. The results showed significant alterations in barrier components in PPR samples compared to SGR, including the cornified envelope and intercellular lipid lamellae formation, desmosome and tight junction organizations, barrier alarmins, and antimicrobial peptides. Moreover, the barrier damage in PPR was unexpectedly similar to atopic dermatitis (AD); this similarity was confirmed by immunofluorescent staining. In summary, besides the well-known dysregulation of immunological, vascular, and neurological functions, we demonstrated prominent permeability barrier alterations in PPR at the molecular level, which highlight the importance of barrier repair therapies for rosacea.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
antimicrobial peptides
barrier function
cornified envelope
papulopustular rosacea
Megjelenés:The Journal of investigative dermatology. - 140 : 10 (2020), p. 1938-1950. -
További szerzők:Dajnoki Zsolt (1985-) (molekuláris biológus) Béke Gabriella (1987-) (molekuláris biológus) Gáspár Krisztián (1974-) (bőrgyógyász) Szabó Imre Lőrinc (1987-) (általános orvos) Janka Eszter Anna (1989-) (bőrgyógyász, népegészségügyi szakember) Póliska Szilárd (1978-) (biológus) Hendrik Zoltán (1986-) (patológus) Méhes Gábor (1966-) (patológus) Töröcsik Dániel (1979-) (bőrgyógyász) Bíró Tamás (1968-) (élettanász) Kapitány Anikó (1979-) (molekuláris biológus) Szegedi Andrea (1964-) (bőrgyógyász)
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Intézményi repozitóriumban (DEA) tárolt változat
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