start-ver=1.4
cd-journal=joma
no-vol=96
cd-vols=
no-issue=1
article-no=
start-page=26
end-page=32
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190821
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=TNF-α and IL-17A induce the expression of lympho-epithelial Kazal-type inhibitor in epidermal keratinocytes
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=BACKGROUND:
Serine proteases have important roles in skin barrier function and desquamation, and the aberrant expression or the dysfunction of serine proteases is associated with the pathogenesis of skin diseases. Serine protease activities are tightly regulated by serine proteases such as kallikrein-related peptidases (KLKs) and serine protease inhibitors such as lympho-epithelial Kazal-type related inhibitor (LEKTI). For a better understating of diseases' pathogenesis, the regulation mechanism of serine proteases and the inhibitors' expression in epidermal keratinocytes must be clarified.
OBJECTIVES:
To investigate the effects of the cytokines on the expression of LEKTI in epidermal keratinocytes.
METHODS:
Normal human epidermal keratinocytes (NHEKs) were stimulated with panels of inflammatory cytokines. The expression of serine protease inhibitors was analyzed using quantitative real-time PCR and ELISA. LEKTI expression in normal human skin and lesions from psoriasis or atopic dermatitis (AD) were analyzed by immunohistochemically and tape-stripping. Trypsin- and chymotrypsin-like serine protease activities in culture supernatants were measured by using specific substrates.
RESULTS:
TNF-α and IL-17A significantly induced the expression of LEKTI in NHEKs. The immunohistochemical and tape-stripping analysis revealed that psoriatic skin lesions had higher LEKTI expression compared to normal skin and AD lesions. Trypsin- and chymotrypsin-like protease activities in the culture media were upregulated 3-5 days later but attenuated 6-7 days later period by these cytokines.
CONCLUSIONS:
In epidermal keratinocytes, the Th1&Th17 cytokines TNF-α and IL-17A induce the expression of serine protease inhibitor LEKTI, and it might occur to suppress the increase in the serine protease activities under inflammation.
en-copyright=
kn-copyright=
en-aut-name=SugiharaSatoru
en-aut-sei=Sugihara
en-aut-mei=Satoru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=SugimotoSaeko
en-aut-sei=Sugimoto
en-aut-mei=Saeko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=TachibanaKota
en-aut-sei=Tachibana
en-aut-mei=Kota
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=KobashiMina
en-aut-sei=Kobashi
en-aut-mei=Mina
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=NomuraHayato
en-aut-sei=Nomura
en-aut-mei=Hayato
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MiyakeTomoko
en-aut-sei=Miyake
en-aut-mei=Tomoko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=HiraiYoji
en-aut-sei=Hirai
en-aut-mei=Yoji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=YamasakiOsamu
en-aut-sei=Yamasaki
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MorizaneShin
en-aut-sei=Morizane
en-aut-mei=Shin
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
affil-num=1
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Departments of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Epidermal keratinocyte
kn-keyword=Epidermal keratinocyte
en-keyword=IL-17A
kn-keyword=IL-17A
en-keyword=Lympho-epithelial Kazal-type inhibitor
kn-keyword=Lympho-epithelial Kazal-type inhibitor
en-keyword=Serine protease inhibitor
kn-keyword=Serine protease inhibitor
en-keyword=TNF-α
kn-keyword=TNF-α
END