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S100A7 (psoriasin) inhibits human epidermal differentiation by enhanced IL-6 secretion through IB/NF-B signalling

Title
S100A7 (psoriasin) inhibits human epidermal differentiation by enhanced IL-6 secretion through IB/NF-B signalling
Authors
Son, Eui DongKim, Hyoung-JuneKim, Kyu HanBin, Bum HoBae, Il-HongLim, Kyung-MinYu, Seok JongCho, Eun-GyungLee, Tae Ryong
Ewha Authors
임경민
SCOPUS Author ID
임경민scopus
Issue Date
2016
Journal Title
EXPERIMENTAL DERMATOLOGY
ISSN
0906-6705JCR Link1600-0625JCR Link
Citation
vol. 25, no. 8, pp. 636 - 641
Keywords
antimicrobial peptideepidermal differentiationinterleukin-6psoriasin (S100A7)receptor for advanced glycation end productsskin barrier
Publisher
WILEY-BLACKWELL
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Psoriasin (S100A7), a member of the S100 protein family, is a well-known antimicrobial peptide and a signalling molecule which regulates cellular function and is highly expressed in hyperproliferative skin conditions such as atopic dermatitis (AD) and psoriasis with disrupted skin barrier function. However, its role in epidermal differentiation remains unknown. We examined the effect of S100A7 on epidermal differentiation in normal human keratinocytes (NHKs) and on a reconstituted human epidermis model. When NHKs were exposed to disruptive stimuli such as Staphylococcus aureus, ultraviolet irradiation and retinoic acid, the secretion of S100A7 into the culture medium increased and the expression of epidermal differentiation markers decreased. Treatment of NHKs with S100A7 significantly inhibited epidermal differentiation by reducing the expression of keratin 1, keratin 10, involucrin and loricrin and by increasing the expression of abnormal differentiation markers (keratin 6 and keratin 16). We verified that the MyD88-IB/NF-B signal cascade was activated via RAGE after S100A7 treatment, resulting in the upregulation of interleukin-6. Finally, we confirmed that S100A7 is a negative regulator of epidermal differentiation using a reconstituted human epidermis model. This study suggests that S100A7-related signalling molecules could be potent targets for recovering skin barrier function in AD and psoriasis where S100A7 is accumulated excessively.
DOI
10.1111/exd.13023
Appears in Collections:
약학대학 > 약학과 > Journal papers
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