PuSH - Publication Server of Helmholtz Zentrum München: miR-146b probably assists miRNA-146a in the suppression of keratinocyte proliferation and inflammatory responses in psoriasis.

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Hermann, H.* ; Runnel, T.* ; Aab, A.* ; Baurecht, H.* ; Rodriguez, E.* ; Magilnick, N.* ; Urgard, E.* ; Šahmatova, L.* ; Prans, E.* ; Maslovskaja, J.* ; Abram, K.* ; Karelson, M.* ; Kaldvee, B.* ; Reemann, P.* ; Haljasorg, U.* ; Rückert, B.* ; Wawrzyniak, P.* ; Weichenthal, M.* ; Mrowietz, U.* ; Franke, A.* ; Gieger, C. ; Barker, J.* ; Trembath, R.* ; Tsoi, L.C.* ; Elder, J.T.* ; Tkaczyk, E.R.* ; Kisand, K.* ; Peterson, P.* ; Kingo, K.* ; Boldin, M.* ; Weidinger, S.* ; Akdis, C.A.* ; Rebane, A.*

miR-146b probably assists miRNA-146a in the suppression of keratinocyte proliferation and inflammatory responses in psoriasis.

J. Invest. Dermatol. 137, 1945-1954 (2017)

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miR-146a inhibits inflammatory responses in human keratinocytes and in different mouse models of skin inflammation. Little is known about the role of miR-146b in the skin. In the present study, we confirmed the increased expression of miR-146a and miR-146b (miR-146a/b) in lesional skin of psoriasis patients. The expression of miR-146a was about 2-fold higher than that of miR-146b in healthy human skin and it was more strongly induced by stimulation of pro-inflammatory cytokines in keratinocytes and fibroblasts. miR-146a/b target genes regulating inflammatory responses or proliferation were altered in the skin of psoriasis patients, among which FERMT1 was verified as direct target of miR-146a. In silico analysis of genome-wide data from >4,000 psoriasis cases and >8,000 controls confirmed a moderate association between psoriasis and genetic variants in miR-146a gene. Transfection of miR-146a/b suppressed and inhibition enhanced keratinocyte proliferation and the expression of psoriasis-related target genes. Enhanced expression of miR-146a/b-influenced genes was detected in cultured keratinocytes from miR-146a-/- and skin fibroblasts from miR-146a-/- and miR-146b-/- mice stimulated with psoriasis-associated cytokines as compared to wild type mice. Our results indicate that besides miR-146a, miR-146b is expressed and might be capable of modulation of inflammatory responses and keratinocyte proliferation in psoriatic skin.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Innate Immune-responses; Nf-kappa-b; Skin Inflammation; Atopic-dermatitis; Receptor 4; Mice; Microrna-146b; Kindlin-1; Induction; Antibody

ISSN (print) / ISBN 0022-202X

e-ISSN 1523-1747

Journal Journal of Investigative Dermatology, The

Quellenangaben Volume: 137, Issue: 9, Pages: 1945-1954

Publisher Elsevier

Publishing Place New York, NY

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Genetic Epidemiology (IGE)