Topical application of endothelin receptor a antagonist attenuates imiquimod-induced psoriasiform skin inflammation

Takeshi Nakahara, Makiko Kido-Nakahara, Dugarmaa Ulzii, Sho Miake, Kei Fujishima, Sawako Sakai, Takahito Chiba, Gaku Tsuji, Masutaka Furue

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Endothelin-1 (ET-1) is well known as the most potent vasoconstrictor, and can evoke histamine-independent pruritus. Recently, its involvement in cutaneous inflammation has begun to draw attention. The upregulation of ET-1 expression in the epidermis of human psoriasis patients has been reported. It was also demonstrated that ET-1 can stimulate dendritic cells to induce Th17/1 immune responses. However, the role of the interaction between ET-1 and ET-1 receptors in the pathogenesis of psoriasis remains elusive. Here, we investigated the effects of ET-1 receptor antagonist on imiquimod (IMQ) -induced psoriasiform dermatitis in mouse. Psoriasis-related cytokines such as IL-17A and TNF-α induced ET-1 expression in human keratinocytes. Topical application of selective endothelin A receptor (ETAR) antagonist ambrisentan significantly attenuated the development of IMQ-induced psoriasiform dermatitis and also significantly inhibited the histological inflammation and cytokine expression (TNF-α, IL-12p40, IL-12 p19, and IL-17) in the lesional skin of the mouse model. Furthermore, topical application of ambrisentan suppressed phenotypic and functional activation of dendritic cells in lymph nodes. Our findings indicate that the ET-1 and ETAR axis plays an important role in the pathogenesis of psoriasis and is a potential therapeutic target for treating psoriasis.

Original languageEnglish
Article number9510
JournalScientific reports
Volume10
Issue number1
DOIs
Publication statusPublished - Dec 1 2020

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Topical application of endothelin receptor a antagonist attenuates imiquimod-induced psoriasiform skin inflammation'. Together they form a unique fingerprint.

Cite this