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001-es BibID:BIBFORM083568
035-os BibID:(absztrakt azonosító)P103
Első szerző:Lisztes Erika (élettanász)
Cím:Functional presence of the endocannabinoid system in human hair follicle-derived outer root sheath keratinocytes / E. Herczeg-Lisztes, I. L. Szabó, A. Oláh, A. G. Szöllősi, N. Vasas, K. Sugawara, R. Paus, T. Bíró
ISSN:0022-202X 1523-1747
Megjegyzések:Aims: We have previously shown that the endocannabinoid anandamide (AEA) inhibits hair shaft elongation and induces apoptosis-driven catagen regression of human hair follicles (HFs) via the activation of cannabinoid receptor-1 expressed by epithelial cells of the HF. Since HFs were also shown to produce endocannabinoids, in the current study, we aimed at investigating the functional presence of the endocannabinoid system (ECS) in cultured human HF-derived outer root sheath keratinocytes (ORSKs). Methods: To investigate the proliferation, viability, and cell death, a series of colorimetric (MTTassay) and fluorescent assays (CyQUANT, DilC1(5)-SYTOX Green staining) were employed. Furthermore, expression of elements of the ECS was identified by immunocytochemistry and quantitative ♭♭real-time'' PCR (RT-qPCR), whereas alterations in the gene expression levels following various treatments were assessed by RT-qPCR. Results: Expressions of enzymes involved in the synthesis (N-acyl-phosphatidylethanolaminespecific phospholipase D, diacylglycerol lipase-a and -b) and degradation (fatty acid amide hydrolase and monoacylglycerol lipase) of the endocannabinoids were identified in the ORSKs. Moreover, AEA was shown to inhibit cellular proliferation and induce apoptosis-dominated cell death in a concentration-dependent manner. Of further importance, AEA exerted a remarkable anti-inflammatory effect (significant suppression of the basal and/or poly-(I:C)-induced expression of HLA-DRA and various pro-inflammatory cytokines, e.g. interleukin (IL)-1b, IL6, IL8, and tumor necrosis factor-a) and induced differentiation. Finally, according to our preliminary results, elevation of the endogenous AEA ♭♭tone'' of the ORSKs by selective inhibitors of the cellular uptake (AM404) or degradation (URB597) of AEA appeared to mimic the above effects of the exogenously applied AEA. Conclusions: Collectively, our data strongly suggest that a functional ECS is expressed in the ORSKs and that AEA may be a key endogenous regulator of their biological processes. Therefore, pharmacological modulation of the endocannabinoid ♭♭tone'' could be a promising, novel tool for the management of relevant hair growth disorders and HF-related inflammatory conditions.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idézhető absztrakt
hair follicle
endocannabinoid system
ORS keratinocyte
Megjelenés:Journal of Investigative Dermatology. - 133 : 5 (2013), p. 1408. -
További szerzők:Szabó Imre Lőrinc (1987-) (általános orvos) Oláh Attila (1984-) (élettanász) Szöllősi Attila Gábor (1982-) (élettanász) Molnárné Vasas Nikolett (1987-) (élettanász) Sugawara, Koji Paus, Ralf Bíró Tamás (1968-) (élettanász) (absztraktok)
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