TNF-α downregulates filaggrin and loricrin through c-Jun N-terminal kinase: role for TNF-α antagonists to improve skin barrier.

TNF-α downregulates filaggrin and loricrin through c-Jun N-terminal kinase: role for TNF-α antagonists to improve skin barrier.
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DOI:
10.1038/jid.2011.24
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发表时间:
2011-06
期刊:
The Journal of investigative dermatology
影响因子:
--
通讯作者:
Leung DY
Leung DY
中科院分区:
其他
文献类型:
--
作者:
Kim BE;Howell MD;Guttman-Yassky E;Gilleaudeau PM;Cardinale IR;Boguniewicz M;Krueger JG;Leung DY

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聚丝蛋白 (FLG)、兜甲蛋白 (LOR) 和外皮蛋白是重要的表皮屏障蛋白。由于银屑病的特点是肿瘤坏死因子-α (TNF-α) 过度表达和皮肤屏障受损,我们研究了银屑病患者皮肤屏障蛋白的表达及其表达是否受到 TNF-α 的调节。发现银屑病患者皮损和非皮损皮肤中FLG和LOR的表达降低。发现牛皮癣中 TNF-α 的表达与表皮屏障蛋白之间存在相关性。研究发现 TNF-α 可通过 c-Jun N 末端激酶依赖性途径调节 FLG 和 LOR 的表达。重要的是,我们报告使用 TNF-α 拮抗剂对银屑病患者进行临床治疗可显着增强表皮屏障蛋白的表达。我们目前的研究表明,TNF 抑制屏障蛋白表达,TNF-α 拮抗剂可能通过改善屏障蛋白表达来促进银屑病患者的临床改善。
Filaggrin (FLG), loricrin (LOR), and involucrin are important epidermal barrier proteins. As psoriasis is characterized by overexpression of tumor necrosis factor-α (TNF-α) and impaired skin barrier, we investigated the expression of skin barrier proteins in psoriasis patients and whether their expression was modulated by TNF-α. The expression of FLG and LOR was found to be decreased in lesional and non-lesional skin of psoriasis patients. A correlation was found between the expression of TNF-α and epidermal barrier proteins in psoriasis. TNF-α was found to modulate the expression of FLG and LOR via a c-Jun N-terminal kinase-dependent pathway. Importantly, we report that clinical treatment of psoriasis patients with a TNF-α antagonist results in significant enhancement of epidermal barrier protein expression. Our current study suggests that TNF inhibits barrier protein expression, and TNF-α antagonists may contribute to clinical improvement in patients with psoriasis by improving barrier protein expression.
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