期刊论文详细信息
Acta Dermato-Venereologica
Inhibiting Sphingosine Kinase 2 Derived-sphingosine-1-phosphate Ameliorates Psoriasis-like Skin Disease via Blocking Th17 Differentiation of Naïve CD4 T Lymphocytes in Mice
Sun-Hye Shin1  So-Youn Woo2  Kyung-Ha Ryu2  Yu-He Kim2  Younghay Lee2  Soojung Hahn2  Kyung-Ah Cho2  Woo-Jae Park2  Joo-Won Park2 
[1] Department of Biochemistry, School of medicine, Ewha Womans University, 07985 Seoul, Korea. ;;
关键词: psoriasis;    CD4+ T lymphocyte;    sphingosine kinase;    sphingosine-1-phosphate;    Th17 differentiation;   
DOI  :  10.2340/00015555-3160
来源: DOAJ
【 摘 要 】

Sphingosine-1-phosphate (S1P) is a signalling sphingolipid metabolite that regulates important cell processes, including cell proliferation and apoptosis. Circulating S1P levels have been reported to be increased in patients with psoriasis relative to healthy patients. The aim of this study was to examine the potency of S1P inhibition using an imiquimod-induced psoriasis mouse model. Both topical ceramidase and sphingosine kinase 1/2 inhibition, which blocks S1P generation, alleviated imiquimod-induced skin lesions and reduced the serum interleukin 17-A levels induced by application of imiquimod. These treatments also normalized skin mRNA levels of genes associated with inflammation and keratinocyte differentiation. Inhibition of sphingosine kinase 2, but not sphingosine kinase 1, diminished levels of suppressor of cytokine signalling 1 and blocked T helper type 17 differentiation of naïve CD4+ T cells; imiquimod-induced psoriasis-like skin symptoms were also ameliorated. These results indicate the distinct effects of sphingosine kinase 1 and sphingosine kinase 2 inhibition on T helper type 17 generation and suggest molecules that inhibit S1P formation, including ceramidase and sphingosine kinase 2 inhibitors, as novel therapeutic candidates for psoriasis.

【 授权许可】

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